Version 1.5.2

- added support for Waveshare 4.37" 4-color e-paper display 512x368
- fixed __has_include test (for packages that don't support __has_include)
- added WIDTH_VISIBLE for correct graphics width for 2.13" b/w 122x250
- added end() method, to release SPI and reset all pins to INPUT

README.md

@@ -62,18 +62,18 @@
 - GDEY0154D67    1.54" b/w 200x200, SSD1681
 - GDEW0154Z04    1.54" b/w/r 200x200, IL0376F, no longer available
 - GDEH0154Z90    1.54" b/w/r 200x200, SSD1681, replacement for GDEW0154Z04
-- GDE0213B1      2.13" b/w 128x250, IL3895, phased out
-- GDEH0213B72    2.13" b/w 128x250, SSD1675A (IL3897), replacement for GDE0213B1
-- GDEH0213B73    2.13" b/w 128x250, SSD1675B, new replacement for GDE0213B1, GDEH0213B72
-- GDEM0213B74    2.13" b/w 128x250, SSD1680
+- GDE0213B1      2.13" b/w 122x250, IL3895, phased out
+- GDEH0213B72    2.13" b/w 122x250, SSD1675A (IL3897), replacement for GDE0213B1
+- GDEH0213B73    2.13" b/w 122x250, SSD1675B, new replacement for GDE0213B1, GDEH0213B72
+- GDEM0213B74    2.13" b/w 122x250, SSD1680
 - GDEW0213I5F    2.13" b/w 104x212, UC8151 (IL0373), flexible
-- GDEW0213T5D    2.13" b/w 128x296, UC8151 (IL0373)
+- GDEW0213T5D    2.13" b/w 104x212, UC8151 (IL0373)
 - GDEW0213M21    2.13" b/w 104x212, UC8151 (IL0373), DES
 - GDEW0213Z16    2.13" b/w/r 104x212, UC8151 (IL0373)
 - GDEW0213Z19    2.13" b/w/r 104x212, UC8151D
 - GDEY0213Z98    2.13" b/w/r 122x250, SSD1680
-- DEPG0213BN     2.13" b/w 128x250, SSD1680, e.g. LILYGO® TTGO T5 V2.3.1 2.13 inch
-- GDEY0213B74    2.13" b/w 128x250, SSD1680
+- DEPG0213BN     2.13" b/w 122x250, SSD1680, e.g. LILYGO® TTGO T5 V2.3.1 2.13 inch
+- GDEY0213B74    2.13" b/w 122x250, SSD1680
 - GDEW026T0      2.6" b/w 152x296, UC8151 (IL0373)
 - GDEW026M01     2.6" b/w 152x296, UC8151 (IL0373), DES
 - DEPG0266BN     2.66" b/w 152x296, SSD1680, e.g. LILYGO® TTGO T5 2.66 inch
@@ -99,6 +99,7 @@
 - GDEW042Z15     4.2" b/w/r 400x300, UC8176 (IL0398)
 - GDEQ042Z21     4.2" b/w/r 400x300, UC8276, (Waveshare V2)
 - GDEY042T91     4.2" b/w 400x300, SSD1683
+- Waveshare437inch4color Waveshare 4.37" 4-color e-paper display 512x368 
 - ACeP565        5.65" Waveshare 5.65" 7-color e-paper display 600x448
 - GDEW0583T7     5.83" b/w 600x448, UC8159c (IL0371)
 - GDEW0583T8     5.83" b/w 648x480, EK79655 (GD7965)
@@ -125,7 +126,12 @@
 - promotion panels from suppliers are welcome, to add support to GxEPD2
 - donation panels from users are welcome, to add support to GxEPD2
 
-### Version 1.5.1
+### Version 1.5.2
+- added support for Waveshare 4.37" 4-color e-paper display 512x368
+- fixed __has_include test (for packages that don't support __has_include)
+- added WIDTH_VISIBLE for correct graphics width for 2.13" b/w 122x250
+- added end() method, to release SPI and reset all pins to INPUT
+#### Version 1.5.1
 - added support for GDEY0154D67 1.54" b/w 200x200
 - added support for GDEY0213B74 2.13" b/w 128x250
 - updated support for GDEY027T91 2.7" b/w 176x264

examples/GxEPD2_Example/GxEPD2_Example.ino

@@ -38,13 +38,13 @@
 
 #include <GxEPD2_BW.h>
 #include <GxEPD2_3C.h>
+#include <GxEPD2_4C.h>
 #include <GxEPD2_7C.h>
 #include <Fonts/FreeMonoBold9pt7b.h>
 
 // select the display constructor line in one of the following files (old style):
 #include "GxEPD2_display_selection.h"
 #include "GxEPD2_display_selection_added.h"
-//#include "GxEPD2_display_selection_more.h" // private
 
 // or select the display class and display driver class in the following file (new style):
 #include "GxEPD2_display_selection_new_style.h"
@@ -81,6 +81,7 @@
 #include "bitmaps/Bitmaps3c800x480.h" // 7.5"  b/w/r
 #include "bitmaps/Bitmaps3c880x528.h" // 7.5"  b/w/r
 #include "bitmaps/WS_Bitmaps800x600.h" // 6.0"  grey
+#include "bitmaps/WS_Bitmaps4c168x168.h" // 4.37" 4-color
 #include "bitmaps/WS_Bitmaps7c192x143.h" // 5.65" 7-color
 //#include "bitmaps/WS_Bitmaps7c300x180.h" // 7.3" 7-color
 #endif
@@ -113,7 +114,7 @@
 
 #if defined(ARDUINO_ARCH_RP2040) && defined(ARDUINO_RASPBERRY_PI_PICO)
 // SPI pins used by GoodDisplay DESPI-PICO. note: steals standard I2C pins PIN_WIRE_SDA (6), PIN_WIRE_SCL (7)
-// uncomment next line for use with GoodDisplay DESPI-PICO.
+// uncomment next line for use with GoodDisplay DESPI-PICO. // MbedSPI(int miso, int mosi, int sck);
 arduino::MbedSPI SPI0(4, 7, 6); // need be valid pins for same SPI channel, else fails blinking 4 long 4 short
 #endif
 
@@ -163,6 +164,7 @@ void setup()
     delay(1000);
   }
   drawBitmaps();
+  drawGraphics();
   //return;
 #if !defined(__AVR) // takes too long!
   if ((display.epd2.panel == GxEPD2::ACeP565) || (display.epd2.panel == GxEPD2::GDEY073D46))
@@ -773,6 +775,9 @@ void drawBitmaps()
 #ifdef _GxBitmaps3c880x528_H_
   drawBitmaps3c880x528();
 #endif
+#if defined(_WS_Bitmaps4c168x168_H_)
+  drawBitmaps4c168x168();
+#endif
 #if defined(_WS_Bitmaps7c192x143_H_)
   drawBitmaps7c192x143();
 #endif
@@ -1685,6 +1690,17 @@ void drawBitmaps3c1304x984()
 }
 #endif
 
+#if defined(_WS_Bitmaps4c168x168_H_)
+void drawBitmaps4c168x168()
+{
+  if (display.epd2.panel == GxEPD2::Waveshare437inch4color)
+  {
+    display.drawNative(WS_Bitmap4c168x168, 0, (display.epd2.WIDTH - 168) / 2, (display.epd2.HEIGHT - 168) / 2, 168, 168, false, false, true);
+    delay(5000);
+  }
+}
+#endif
+
 #if defined(_WS_Bitmaps7c192x143_H_)
 void drawBitmaps7c192x143()
 {
@@ -1769,3 +1785,19 @@ void draw7colorlines()
   }
   while (display.nextPage());
 }
+
+void drawGraphics()
+{
+  display.setRotation(0);
+  display.firstPage();
+  do
+  {
+    display.drawRect(display.width() / 8, display.height() / 8, display.width() * 3 / 4, display.height() * 3 / 4, GxEPD_BLACK);
+    display.drawLine(display.width() / 8, display.height() / 8, display.width() * 7 / 8, display.height() * 7 / 8, GxEPD_BLACK);
+    display.drawLine(display.width() / 8, display.height() * 7 / 8, display.width() *7 / 8, display.height() / 8, GxEPD_BLACK);
+    display.drawCircle(display.width() / 2, display.height() / 2, display.height() / 4, GxEPD_BLACK);
+    display.drawPixel(display.width() / 4, display.height() / 2 , GxEPD_BLACK);
+    display.drawPixel(display.width() * 3 / 4, display.height() / 2 , GxEPD_BLACK);
+  }
+  while (display.nextPage());
+}

examples/GxEPD2_Example/GxEPD2_display_selection.h

@@ -23,15 +23,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -79,6 +79,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C < GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4 > display(GxEPD2_750c_Z08(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C < GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 4 > display(GxEPD2_750c_Z90(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_3C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 5.65" 7-color (3C graphics)
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 5.65" 7-color
@@ -100,15 +102,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -156,6 +158,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4> display(GxEPD2_750c_Z08(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 4> display(GxEPD2_750c_Z90(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // Waveshare 5.65" 7-color
 //GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 6 > display(GxEPD2_730c_GDEY073D46(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -171,15 +175,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.4.1
@@ -224,6 +228,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 2> display(GxEPD2_750c_Z90(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_3C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 5.65" 7-color (3C graphics)
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 5.65" 7-color
@@ -261,15 +267,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.4.1
@@ -314,6 +320,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 2> display(GxEPD2_750c_Z90(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_3C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare 5.65" 7-color (3C graphics)
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare 5.65" 7-color
@@ -333,15 +341,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -387,6 +395,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // Waveshare 5.65" 7-color
@@ -413,15 +423,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -467,6 +477,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
@@ -485,15 +497,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -538,6 +550,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); //GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
 

examples/GxEPD2_Example/GxEPD2_display_selection_added.h

@@ -30,15 +30,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -84,6 +84,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
@@ -118,15 +120,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -172,6 +174,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(//*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // Waveshare 5.65" 7-color
@@ -202,15 +206,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -255,6 +259,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT> display(GxEPD2_750c_Z90(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // Waveshare 5.65" 7-color
 //GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 4 > display(GxEPD2_730c_GDEY073D46(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -280,15 +286,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -333,6 +339,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT> display(GxEPD2_750c_Z90(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // Waveshare 5.65" 7-color
 //GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 4 > display(GxEPD2_730c_GDEY073D46(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -358,15 +366,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -414,6 +422,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4> display(GxEPD2_750c_Z08(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 4> display(GxEPD2_750c_Z90(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // Waveshare 5.65" 7-color
 //GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 6 > display(GxEPD2_730c_GDEY073D46(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -431,15 +441,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -485,6 +495,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color

examples/GxEPD2_Example/GxEPD2_display_selection_more.h

@@ -1,195 +0,0 @@
-// Display Library example for SPI e-paper panels from Dalian Good Display and boards from Waveshare.
-// Requires HW SPI and Adafruit_GFX. Caution: the e-paper panels require 3.3V supply AND data lines!
-//
-// Display Library based on Demo Example from Good Display: http://www.e-paper-display.com/download_list/downloadcategoryid=34&isMode=false.html
-//
-// Author: Jean-Marc Zingg
-//
-// Version: see library.properties
-//
-// Library: https://github.com/ZinggJM/GxEPD2
-
-#ifndef _GxEPD2_more_boards_added_H_
-#define _GxEPD2_more_boards_added_H_
-//GxEPD2_BW < GxEPD2_750_T7, GxEPD2_750_T7::HEIGHT / 2 > display(GxEPD2_750_T7(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-
-// Wemos D1 R32 Arduino board
-// NOTE: pin 14 doesn't work on my board, can't be used for BUSY
-
-// mapping suggestion from Waveshare SPI e-Paper to Wemos D1 R32 Arduino board
-// BUSY -> 16, RST -> 13, DC -> 12, CS -> SS(5), CLK -> SCK(18), DIN -> MOSI(23), GND -> GND, 3.3V -> 3.3V
-
-#if defined(ESP32)
-//GxEPD2_BW<GxEPD2_154, GxEPD2_154::HEIGHT> display(GxEPD2_154(/*CS=5*/ 15, /*DC=*/ 12, /*RST=*/ 27, /*BUSY=*/ 32)); // HUZZAH32
-#define RST_PIN        33
-#define DC_PIN         14
-#define CS_PIN         15
-#define BUSY_PIN       23
-//GxEPD2_BW<GxEPD2_154, GxEPD2_154::HEIGHT> display(GxEPD2_154(/*CS=5*/ CS_PIN, /*DC=*/ DC_PIN, /*RST=*/ 12, /*BUSY=*/ BUSY_PIN)); // HUZZAH32 test2
-// select one and adapt to your mapping, can use full buffer size (full HEIGHT)
-//GxEPD2_BW<GxEPD2_154, GxEPD2_154::HEIGHT> display(GxEPD2_154(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16));
-//GxEPD2_BW<GxEPD2_154_D67, GxEPD2_154_D67::HEIGHT> display(GxEPD2_154_D67(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0154D67
-//GxEPD2_BW<GxEPD2_154_T8, GxEPD2_154_T8::HEIGHT> display(GxEPD2_154_T8(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154T8 152x152
-//GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154M09 200x200
-//GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154M10 152x152
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16));
-//GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16));
-//GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16));
-//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16));
-//GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16));
-//GxEPD2_BW<GxEPD2_750, GxEPD2_750::HEIGHT> display(GxEPD2_750(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16));
-//GxEPD2_BW<GxEPD2_750_T7, GxEPD2_750_T7::HEIGHT> display(GxEPD2_750_T7(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16)); // GDEW075T7 800x480
-// 3-color e-papers
-//GxEPD2_3C<GxEPD2_154c, GxEPD2_154c::HEIGHT> display(GxEPD2_154c(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16)); // GDEW0154Z04 no longer available
-//GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16)); // GDEH0154Z90
-//GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16));
-//GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16));
-//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16));
-//GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16));
-//GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16));
-// grey levels parallel IF e-papers on Waveshare e-Paper IT8951 Driver HAT
-// HRDY -> 16, RST -> 13, CS -> SS(5), SCK -> SCK(18), MOSI -> MOSI(23), MISO -> MISO(19), GND -> GND, 5V -> 5V
-// note: 5V supply needs to be exact and strong; 5V over diode from USB (e.g. Wemos D1 mini) doesn't work!
-//GxEPD2_BW<GxEPD2_it60, GxEPD2_it60::HEIGHT> display(GxEPD2_it60(/*CS=5*/ SS, /*DC=*/ 12, /*RST=*/ 13, /*BUSY=*/ 16));
-#endif
-
-// mapping of Waveshare ESP32 Driver Board
-// BUSY -> 25, RST -> 26, DC -> 27, CS-> 15, CLK -> 13, DIN -> 14
-// BUSY -> 25, RST -> 26, DC -> 27, CS-> 15, CLK -> 18, DIN -> 23 // HW SPI for GxEPD2
-// needs connections from pin 13 to 18 and 14 to 23
-// does not work because of pin 14 on WROOM-32, like on Wemos D1 R32 Arduino board
-
-#if defined(ESP32)
-// ***** for mapping of Waveshare ESP32 Driver Board *****
-// use Board "ESP32 Dev Module" to build with Arduino IDE
-// select one and adapt to your mapping, can use full buffer size (full HEIGHT)
-//GxEPD2_BW<GxEPD2_154, GxEPD2_154::HEIGHT> display(GxEPD2_154(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25));
-//GxEPD2_BW<GxEPD2_154_D67, GxEPD2_154_D67::HEIGHT> display(GxEPD2_154_D67(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0154D67
-//GxEPD2_BW<GxEPD2_154_T8, GxEPD2_154_T8::HEIGHT> display(GxEPD2_154_T8(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0154T8 152x152
-//GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0154M09 200x200
-//GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0154M10 152x152
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25));
-//GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213I5F
-//GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25));
-//GxEPD2_BW<GxEPD2_290_T5, GxEPD2_290_T5::HEIGHT> display(GxEPD2_290_T5(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW029T5
-//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25));
-//GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25));
-//GxEPD2_BW<GxEPD2_750, GxEPD2_750::HEIGHT> display(GxEPD2_750(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25));
-//GxEPD2_BW<GxEPD2_750_T7, GxEPD2_750_T7::HEIGHT> display(GxEPD2_750_T7(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW075T7 800x480
-// 3-color e-papers
-//GxEPD2_3C<GxEPD2_154c, GxEPD2_154c::HEIGHT> display(GxEPD2_154c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0154Z04 no longer available
-//GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0154Z90
-//GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25));
-//GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25));
-//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25));
-//GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25));
-//GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25));
-#endif
-
-// Arduino DUE
-
-// mapping suggestion for Arduino DUE, variant with CS on 10
-// BUSY -> 7, RST -> 9, DC -> 8, CS-> 10, CLK -> 76, DIN -> 75
-// SPI pins are on 6 pin 2x3 SPI header, except CS
-
-#if defined(ARDUINO_ARCH_SAM)
-#define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
-#define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-// select one and adapt to your mapping
-//GxEPD2_BW<GxEPD2_154, MAX_HEIGHT(GxEPD2_154)> display(GxEPD2_154(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_154_D67, MAX_HEIGHT(GxEPD2_154_D67)> display(GxEPD2_154_D67(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154D67
-//GxEPD2_BW<GxEPD2_154_T8, MAX_HEIGHT(GxEPD2_154_T8)> display(GxEPD2_154_T8(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154T8 152x152
-//GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200
-//GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_583_T8, MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_750_T7, MAX_HEIGHT(GxEPD2_750_T7)> display(GxEPD2_750_T7(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075T7 800x480
-// 3-color e-papers
-#define MAX_HEIGHT_3C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
-//GxEPD2_3C<GxEPD2_154c, MAX_HEIGHT_3C(GxEPD2_154c)> display(GxEPD2_154c(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154Z04 no longer available
-//GxEPD2_3C<GxEPD2_154_Z90c, MAX_HEIGHT_3C(GxEPD2_154_Z90c)> display(GxEPD2_154_Z90c(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154Z90
-//GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-//GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=10*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
-#endif
-
-// paged drawing test on ESP8266
-
-#if defined (ESP8266)
-#define MAX_DISPLAY_BUFFER_SIZE 800 // 
-#define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-// select one and adapt to your mapping
-//GxEPD2_BW<GxEPD2_154, MAX_HEIGHT(GxEPD2_154)> display(GxEPD2_154(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-//GxEPD2_BW<GxEPD2_154_D67, MAX_HEIGHT(GxEPD2_154_D67)> display(GxEPD2_154_D67(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0154D67
-//GxEPD2_BW<GxEPD2_154_T8, MAX_HEIGHT(GxEPD2_154_T8)> display(GxEPD2_154_T8(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154T8 152x152
-//GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154M09 200x200
-//GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154M10 152x152
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-//GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213I5F
-//GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-//GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW029T5
-//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-//GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-//GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-//GxEPD2_BW<GxEPD2_583_T8, MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-//GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-//GxEPD2_BW<GxEPD2_750_T7, MAX_HEIGHT(GxEPD2_750_T7)> display(GxEPD2_750_T7(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW075T7 800x480
-// 3-color e-papers
-#define MAX_HEIGHT_3C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
-//GxEPD2_3C<GxEPD2_154c, MAX_HEIGHT_3C(GxEPD2_154c)> display(GxEPD2_154c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154Z04 no longer available
-//GxEPD2_3C<GxEPD2_154_Z90c, MAX_HEIGHT_3C(GxEPD2_154_Z90c)> display(GxEPD2_154_Z90c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0154Z90
-//GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-//GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-//GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-//GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-//GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
-#endif
-
-#if defined(ARDUINO_ARCH_STM32) && (defined(ARDUINO_NUCLEO_F103RB))
-// package STM32 Cores by STMicroelecronics version 1.5.0
-// Board Manager section: "STM32 Boards (selected from submenu)"
-// Board: "Nucleo-64"
-// Board part number: "Nucleo_F103RB"
-// Note: set SPI jumper switches to "on" for pin 11, 12, 13 use (no ICSP connector on Nucleo)
-#define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
-#define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-// select one and adapt to your mapping
-//GxEPD2_BW<GxEPD2_154, MAX_HEIGHT(GxEPD2_154)> display(GxEPD2_154(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_154_D67, MAX_HEIGHT(GxEPD2_154_D67)> display(GxEPD2_154_D67(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0154D67
-//GxEPD2_BW<GxEPD2_154_T8, MAX_HEIGHT(GxEPD2_154_T8)> display(GxEPD2_154_T8(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0154T8 152x152
-//GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0154M09 200x200
-//GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0154M10 152x152
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDE0213B1, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B72
-//GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213I5F
-//GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW029T5
-//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_583_T8, MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7));
-//GxEPD2_BW<GxEPD2_750_T7, MAX_HEIGHT(GxEPD2_750_T7)> display(GxEPD2_750_T7(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW075T7 800x480
-// 3-color e-papers
-#define MAX_HEIGHT_3C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
-//GxEPD2_3C<GxEPD2_154c, MAX_HEIGHT_3C(GxEPD2_154c)> display(GxEPD2_154c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0154Z04 no longer available
-//GxEPD2_3C<GxEPD2_154_Z90c, MAX_HEIGHT_3C(GxEPD2_154_Z90c)> display(GxEPD2_154_Z90c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0154Z90
-//GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7));
-//GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7));
-//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7));
-//GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7));
-//GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7));
-//GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7));
-#endif
-
-#endif

examples/GxEPD2_Example/GxEPD2_display_selection_new_style.h

@@ -18,6 +18,7 @@
 // select the display class (only one), matching the kind of display panel
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C
+//#define GxEPD2_DISPLAY_CLASS GxEPD2_4C
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C
 
 // select the display driver class (only one) for your  panel
@@ -29,15 +30,15 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A, (WFT0154CZB3)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D, (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_GDEY0154D67 // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   128x250, IL3895, (HINK-E0213-G01), phased out
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 128x250, SSD1680, FPC-7528B)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   122x250, IL3895, (HINK-E0213-G01), phased out
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 122x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 122x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 122x250, SSD1680, FPC-7528B)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D, (WFT0213CZ16)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  128x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  122x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373), (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373), (WFT0260CZB2)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_266_BN // DEPG0266BN   152x296, SSD1680, (FPC7510), TTGO T5 V2.66, TTGO T5 V2.4.1
@@ -85,6 +86,8 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, EK79655 (GD7965), (WFT0583CZ61)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677, (HINK-E075A07-A0)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248c    // GDEY1248Z51 1304x984, UC8179, (WFT1248BZ23,WFT1248BZ24)
+// 4-color e-paper
+//#define GxEPD2_DRIVER_CLASS GxEPD2_437c     // Waveshare 4.37" 4-color
 // 7-color e-paper
 //#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color
 //#define GxEPD2_DRIVER_CLASS GxEPD2_730c_GDEY073D46 // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -104,12 +107,14 @@
 // somehow there should be an easier way to do this
 #define GxEPD2_BW_IS_GxEPD2_BW true
 #define GxEPD2_3C_IS_GxEPD2_3C true
+#define GxEPD2_4C_IS_GxEPD2_4C true
 #define GxEPD2_7C_IS_GxEPD2_7C true
 #define GxEPD2_1248_IS_GxEPD2_1248 true
 #define GxEPD2_1248c_IS_GxEPD2_1248c true
 #define IS_GxEPD(c, x) (c##x)
 #define IS_GxEPD2_BW(x) IS_GxEPD(GxEPD2_BW_IS_, x)
 #define IS_GxEPD2_3C(x) IS_GxEPD(GxEPD2_3C_IS_, x)
+#define IS_GxEPD2_4C(x) IS_GxEPD(GxEPD2_4C_IS_, x)
 #define IS_GxEPD2_7C(x) IS_GxEPD(GxEPD2_7C_IS_, x)
 #define IS_GxEPD2_1248(x) IS_GxEPD(GxEPD2_1248_IS_, x)
 #define IS_GxEPD2_1248c(x) IS_GxEPD(GxEPD2_1248c_IS_, x)
@@ -120,7 +125,7 @@
 #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-5000ul) // ~34000 base use, change 5000 to your application use
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -139,7 +144,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g.
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -172,7 +177,7 @@ GxEPD2_DISPLAY_CLASS < GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS) > di
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -191,7 +196,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -221,7 +226,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -238,7 +243,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 131072ul // e.g. half of available ram
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))

examples/GxEPD2_Example/GxEPD2_selection_check.h

@@ -81,6 +81,8 @@
 #define GxEPD2_750c_Z08_IS_3C true
 #define GxEPD2_750c_Z90_IS_3C true
 #define GxEPD2_1248c_IS_3C true
+// 4-color e-paper
+#define GxEPD2_437c_IS_4C true
 // 7-color e-paper
 #define GxEPD2_565c_IS_7C true
 #define GxEPD2_730c_GDEY073D46_IS_7C true
@@ -89,6 +91,7 @@
 #define IS_GxEPD2_DRIVER(c, x) (c##x)
 #define IS_GxEPD2_DRIVER_BW(x) IS_GxEPD2_DRIVER(x, _IS_BW)
 #define IS_GxEPD2_DRIVER_3C(x) IS_GxEPD2_DRIVER(x, _IS_3C)
+#define IS_GxEPD2_DRIVER_4C(x) IS_GxEPD2_DRIVER(x, _IS_4C)
 #define IS_GxEPD2_DRIVER_7C(x) IS_GxEPD2_DRIVER(x, _IS_7C)
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_BW used with 3-color driver class"
@@ -96,8 +99,8 @@
 #if IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_3C used with b/w driver class"
 #endif
-#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
-#error "neither BW nor 3C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
+#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_4C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
+#error "neither BW nor 3C nor 4C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
 #endif
 
 #endif

examples/GxEPD2_GFX_Example/GxEPD2_display_selection.h

@@ -23,15 +23,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -79,6 +79,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C < GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4 > display(GxEPD2_750c_Z08(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C < GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 4 > display(GxEPD2_750c_Z90(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_3C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 5.65" 7-color (3C graphics)
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 5.65" 7-color
@@ -100,15 +102,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -156,6 +158,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4> display(GxEPD2_750c_Z08(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 4> display(GxEPD2_750c_Z90(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // Waveshare 5.65" 7-color
 //GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 6 > display(GxEPD2_730c_GDEY073D46(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -171,15 +175,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.4.1
@@ -224,6 +228,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 2> display(GxEPD2_750c_Z90(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_3C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 5.65" 7-color (3C graphics)
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 5.65" 7-color
@@ -261,15 +267,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.4.1
@@ -314,6 +320,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 2> display(GxEPD2_750c_Z90(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_3C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare 5.65" 7-color (3C graphics)
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare 5.65" 7-color
@@ -333,15 +341,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -387,6 +395,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // Waveshare 5.65" 7-color
@@ -413,15 +423,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -467,6 +477,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
@@ -485,15 +497,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -538,6 +550,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); //GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
 

examples/GxEPD2_GFX_Example/GxEPD2_display_selection_added.h

@@ -30,15 +30,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -84,6 +84,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
@@ -118,15 +120,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -172,6 +174,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(//*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // Waveshare 5.65" 7-color
@@ -202,15 +206,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -255,6 +259,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT> display(GxEPD2_750c_Z90(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // Waveshare 5.65" 7-color
 //GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 4 > display(GxEPD2_730c_GDEY073D46(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -280,15 +286,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -333,6 +339,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT> display(GxEPD2_750c_Z90(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // Waveshare 5.65" 7-color
 //GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 4 > display(GxEPD2_730c_GDEY073D46(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -358,15 +366,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -414,6 +422,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4> display(GxEPD2_750c_Z08(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 4> display(GxEPD2_750c_Z90(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // Waveshare 5.65" 7-color
 //GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 6 > display(GxEPD2_730c_GDEY073D46(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -431,15 +441,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -485,6 +495,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color

examples/GxEPD2_GFX_Example/GxEPD2_display_selection_new_style.h

@@ -18,6 +18,7 @@
 // select the display class (only one), matching the kind of display panel
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C
+//#define GxEPD2_DISPLAY_CLASS GxEPD2_4C
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C
 
 // select the display driver class (only one) for your  panel
@@ -29,15 +30,15 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A, (WFT0154CZB3)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D, (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_GDEY0154D67 // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   128x250, IL3895, (HINK-E0213-G01), phased out
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 128x250, SSD1680, FPC-7528B)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   122x250, IL3895, (HINK-E0213-G01), phased out
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 122x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 122x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 122x250, SSD1680, FPC-7528B)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D, (WFT0213CZ16)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  128x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  122x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373), (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373), (WFT0260CZB2)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_266_BN // DEPG0266BN   152x296, SSD1680, (FPC7510), TTGO T5 V2.66, TTGO T5 V2.4.1
@@ -85,6 +86,8 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, EK79655 (GD7965), (WFT0583CZ61)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677, (HINK-E075A07-A0)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248c    // GDEY1248Z51 1304x984, UC8179, (WFT1248BZ23,WFT1248BZ24)
+// 4-color e-paper
+//#define GxEPD2_DRIVER_CLASS GxEPD2_437c     // Waveshare 4.37" 4-color
 // 7-color e-paper
 //#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color
 //#define GxEPD2_DRIVER_CLASS GxEPD2_730c_GDEY073D46 // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -104,12 +107,14 @@
 // somehow there should be an easier way to do this
 #define GxEPD2_BW_IS_GxEPD2_BW true
 #define GxEPD2_3C_IS_GxEPD2_3C true
+#define GxEPD2_4C_IS_GxEPD2_4C true
 #define GxEPD2_7C_IS_GxEPD2_7C true
 #define GxEPD2_1248_IS_GxEPD2_1248 true
 #define GxEPD2_1248c_IS_GxEPD2_1248c true
 #define IS_GxEPD(c, x) (c##x)
 #define IS_GxEPD2_BW(x) IS_GxEPD(GxEPD2_BW_IS_, x)
 #define IS_GxEPD2_3C(x) IS_GxEPD(GxEPD2_3C_IS_, x)
+#define IS_GxEPD2_4C(x) IS_GxEPD(GxEPD2_4C_IS_, x)
 #define IS_GxEPD2_7C(x) IS_GxEPD(GxEPD2_7C_IS_, x)
 #define IS_GxEPD2_1248(x) IS_GxEPD(GxEPD2_1248_IS_, x)
 #define IS_GxEPD2_1248c(x) IS_GxEPD(GxEPD2_1248c_IS_, x)
@@ -120,7 +125,7 @@
 #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-5000ul) // ~34000 base use, change 5000 to your application use
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -139,7 +144,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g.
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -172,7 +177,7 @@ GxEPD2_DISPLAY_CLASS < GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS) > di
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -191,7 +196,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -221,7 +226,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -238,7 +243,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 131072ul // e.g. half of available ram
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))

examples/GxEPD2_GFX_Example/GxEPD2_selection_check.h

@@ -81,6 +81,8 @@
 #define GxEPD2_750c_Z08_IS_3C true
 #define GxEPD2_750c_Z90_IS_3C true
 #define GxEPD2_1248c_IS_3C true
+// 4-color e-paper
+#define GxEPD2_437c_IS_4C true
 // 7-color e-paper
 #define GxEPD2_565c_IS_7C true
 #define GxEPD2_730c_GDEY073D46_IS_7C true
@@ -89,6 +91,7 @@
 #define IS_GxEPD2_DRIVER(c, x) (c##x)
 #define IS_GxEPD2_DRIVER_BW(x) IS_GxEPD2_DRIVER(x, _IS_BW)
 #define IS_GxEPD2_DRIVER_3C(x) IS_GxEPD2_DRIVER(x, _IS_3C)
+#define IS_GxEPD2_DRIVER_4C(x) IS_GxEPD2_DRIVER(x, _IS_4C)
 #define IS_GxEPD2_DRIVER_7C(x) IS_GxEPD2_DRIVER(x, _IS_7C)
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_BW used with 3-color driver class"
@@ -96,8 +99,8 @@
 #if IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_3C used with b/w driver class"
 #endif
-#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
-#error "neither BW nor 3C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
+#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_4C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
+#error "neither BW nor 3C nor 4C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
 #endif
 
 #endif

examples/GxEPD2_HelloWorld/GxEPD2_display_selection.h

@@ -23,15 +23,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -79,6 +79,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C < GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4 > display(GxEPD2_750c_Z08(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C < GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 4 > display(GxEPD2_750c_Z90(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_3C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 5.65" 7-color (3C graphics)
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 5.65" 7-color
@@ -100,15 +102,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -156,6 +158,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4> display(GxEPD2_750c_Z08(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 4> display(GxEPD2_750c_Z90(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // Waveshare 5.65" 7-color
 //GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 6 > display(GxEPD2_730c_GDEY073D46(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -171,15 +175,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.4.1
@@ -224,6 +228,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 2> display(GxEPD2_750c_Z90(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_3C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 5.65" 7-color (3C graphics)
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 5.65" 7-color
@@ -261,15 +267,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.4.1
@@ -314,6 +320,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 2> display(GxEPD2_750c_Z90(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_3C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare 5.65" 7-color (3C graphics)
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare 5.65" 7-color
@@ -333,15 +341,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -387,6 +395,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // Waveshare 5.65" 7-color
@@ -413,15 +423,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -467,6 +477,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
@@ -485,15 +497,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -538,6 +550,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); //GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
 

examples/GxEPD2_HelloWorld/GxEPD2_display_selection_added.h

@@ -30,15 +30,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -84,6 +84,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
@@ -118,15 +120,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -172,6 +174,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(//*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // Waveshare 5.65" 7-color
@@ -202,15 +206,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -255,6 +259,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT> display(GxEPD2_750c_Z90(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // Waveshare 5.65" 7-color
 //GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 4 > display(GxEPD2_730c_GDEY073D46(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -280,15 +286,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -333,6 +339,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT> display(GxEPD2_750c_Z90(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // Waveshare 5.65" 7-color
 //GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 4 > display(GxEPD2_730c_GDEY073D46(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -358,15 +366,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -414,6 +422,8 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4> display(GxEPD2_750c_Z08(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 4> display(GxEPD2_750c_Z90(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // Waveshare 5.65" 7-color
 //GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 6 > display(GxEPD2_730c_GDEY073D46(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -431,15 +441,15 @@
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
 //GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
@@ -485,6 +495,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color

examples/GxEPD2_HelloWorld/GxEPD2_display_selection_new_style.h

@@ -18,6 +18,7 @@
 // select the display class (only one), matching the kind of display panel
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C
+//#define GxEPD2_DISPLAY_CLASS GxEPD2_4C
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C
 
 // select the display driver class (only one) for your  panel
@@ -29,15 +30,15 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A, (WFT0154CZB3)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D, (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_GDEY0154D67 // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   128x250, IL3895, (HINK-E0213-G01), phased out
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 128x250, SSD1680, FPC-7528B)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   122x250, IL3895, (HINK-E0213-G01), phased out
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 122x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 122x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 122x250, SSD1680, FPC-7528B)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D, (WFT0213CZ16)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  128x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  122x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373), (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373), (WFT0260CZB2)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_266_BN // DEPG0266BN   152x296, SSD1680, (FPC7510), TTGO T5 V2.66, TTGO T5 V2.4.1
@@ -85,6 +86,8 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, EK79655 (GD7965), (WFT0583CZ61)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677, (HINK-E075A07-A0)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248c    // GDEY1248Z51 1304x984, UC8179, (WFT1248BZ23,WFT1248BZ24)
+// 4-color e-paper
+//#define GxEPD2_DRIVER_CLASS GxEPD2_437c     // Waveshare 4.37" 4-color
 // 7-color e-paper
 //#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color
 //#define GxEPD2_DRIVER_CLASS GxEPD2_730c_GDEY073D46 // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -104,12 +107,14 @@
 // somehow there should be an easier way to do this
 #define GxEPD2_BW_IS_GxEPD2_BW true
 #define GxEPD2_3C_IS_GxEPD2_3C true
+#define GxEPD2_4C_IS_GxEPD2_4C true
 #define GxEPD2_7C_IS_GxEPD2_7C true
 #define GxEPD2_1248_IS_GxEPD2_1248 true
 #define GxEPD2_1248c_IS_GxEPD2_1248c true
 #define IS_GxEPD(c, x) (c##x)
 #define IS_GxEPD2_BW(x) IS_GxEPD(GxEPD2_BW_IS_, x)
 #define IS_GxEPD2_3C(x) IS_GxEPD(GxEPD2_3C_IS_, x)
+#define IS_GxEPD2_4C(x) IS_GxEPD(GxEPD2_4C_IS_, x)
 #define IS_GxEPD2_7C(x) IS_GxEPD(GxEPD2_7C_IS_, x)
 #define IS_GxEPD2_1248(x) IS_GxEPD(GxEPD2_1248_IS_, x)
 #define IS_GxEPD2_1248c(x) IS_GxEPD(GxEPD2_1248c_IS_, x)
@@ -120,7 +125,7 @@
 #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-5000ul) // ~34000 base use, change 5000 to your application use
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -139,7 +144,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g.
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -172,7 +177,7 @@ GxEPD2_DISPLAY_CLASS < GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS) > di
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -191,7 +196,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -221,7 +226,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -238,7 +243,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 131072ul // e.g. half of available ram
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))

examples/GxEPD2_HelloWorld/GxEPD2_selection_check.h

@@ -81,6 +81,8 @@
 #define GxEPD2_750c_Z08_IS_3C true
 #define GxEPD2_750c_Z90_IS_3C true
 #define GxEPD2_1248c_IS_3C true
+// 4-color e-paper
+#define GxEPD2_437c_IS_4C true
 // 7-color e-paper
 #define GxEPD2_565c_IS_7C true
 #define GxEPD2_730c_GDEY073D46_IS_7C true
@@ -89,6 +91,7 @@
 #define IS_GxEPD2_DRIVER(c, x) (c##x)
 #define IS_GxEPD2_DRIVER_BW(x) IS_GxEPD2_DRIVER(x, _IS_BW)
 #define IS_GxEPD2_DRIVER_3C(x) IS_GxEPD2_DRIVER(x, _IS_3C)
+#define IS_GxEPD2_DRIVER_4C(x) IS_GxEPD2_DRIVER(x, _IS_4C)
 #define IS_GxEPD2_DRIVER_7C(x) IS_GxEPD2_DRIVER(x, _IS_7C)
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_BW used with 3-color driver class"
@@ -96,8 +99,8 @@
 #if IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_3C used with b/w driver class"
 #endif
-#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
-#error "neither BW nor 3C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
+#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_4C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
+#error "neither BW nor 3C nor 4C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
 #endif
 
 #endif

examples/GxEPD2_NotPagedExample/GxEPD2_display_selection_new_style.h

@@ -18,6 +18,7 @@
 // select the display class (only one), matching the kind of display panel
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C
+//#define GxEPD2_DISPLAY_CLASS GxEPD2_4C
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C
 
 // select the display driver class (only one) for your  panel
@@ -29,15 +30,15 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A, (WFT0154CZB3)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D, (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_GDEY0154D67 // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   128x250, IL3895, (HINK-E0213-G01), phased out
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 128x250, SSD1680, FPC-7528B)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   122x250, IL3895, (HINK-E0213-G01), phased out
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 122x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 122x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 122x250, SSD1680, FPC-7528B)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D, (WFT0213CZ16)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  128x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  122x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373), (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373), (WFT0260CZB2)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_266_BN // DEPG0266BN   152x296, SSD1680, (FPC7510), TTGO T5 V2.66, TTGO T5 V2.4.1
@@ -85,6 +86,8 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, EK79655 (GD7965), (WFT0583CZ61)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677, (HINK-E075A07-A0)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248c    // GDEY1248Z51 1304x984, UC8179, (WFT1248BZ23,WFT1248BZ24)
+// 4-color e-paper
+//#define GxEPD2_DRIVER_CLASS GxEPD2_437c     // Waveshare 4.37" 4-color
 // 7-color e-paper
 //#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color
 //#define GxEPD2_DRIVER_CLASS GxEPD2_730c_GDEY073D46 // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -104,12 +107,14 @@
 // somehow there should be an easier way to do this
 #define GxEPD2_BW_IS_GxEPD2_BW true
 #define GxEPD2_3C_IS_GxEPD2_3C true
+#define GxEPD2_4C_IS_GxEPD2_4C true
 #define GxEPD2_7C_IS_GxEPD2_7C true
 #define GxEPD2_1248_IS_GxEPD2_1248 true
 #define GxEPD2_1248c_IS_GxEPD2_1248c true
 #define IS_GxEPD(c, x) (c##x)
 #define IS_GxEPD2_BW(x) IS_GxEPD(GxEPD2_BW_IS_, x)
 #define IS_GxEPD2_3C(x) IS_GxEPD(GxEPD2_3C_IS_, x)
+#define IS_GxEPD2_4C(x) IS_GxEPD(GxEPD2_4C_IS_, x)
 #define IS_GxEPD2_7C(x) IS_GxEPD(GxEPD2_7C_IS_, x)
 #define IS_GxEPD2_1248(x) IS_GxEPD(GxEPD2_1248_IS_, x)
 #define IS_GxEPD2_1248c(x) IS_GxEPD(GxEPD2_1248c_IS_, x)
@@ -120,7 +125,7 @@
 #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-5000ul) // ~34000 base use, change 5000 to your application use
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -139,7 +144,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g.
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -172,7 +177,7 @@ GxEPD2_DISPLAY_CLASS < GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS) > di
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -191,7 +196,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -221,7 +226,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -238,7 +243,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 131072ul // e.g. half of available ram
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))

examples/GxEPD2_NotPagedExample/GxEPD2_selection_check.h

@@ -81,6 +81,8 @@
 #define GxEPD2_750c_Z08_IS_3C true
 #define GxEPD2_750c_Z90_IS_3C true
 #define GxEPD2_1248c_IS_3C true
+// 4-color e-paper
+#define GxEPD2_437c_IS_4C true
 // 7-color e-paper
 #define GxEPD2_565c_IS_7C true
 #define GxEPD2_730c_GDEY073D46_IS_7C true
@@ -89,6 +91,7 @@
 #define IS_GxEPD2_DRIVER(c, x) (c##x)
 #define IS_GxEPD2_DRIVER_BW(x) IS_GxEPD2_DRIVER(x, _IS_BW)
 #define IS_GxEPD2_DRIVER_3C(x) IS_GxEPD2_DRIVER(x, _IS_3C)
+#define IS_GxEPD2_DRIVER_4C(x) IS_GxEPD2_DRIVER(x, _IS_4C)
 #define IS_GxEPD2_DRIVER_7C(x) IS_GxEPD2_DRIVER(x, _IS_7C)
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_BW used with 3-color driver class"
@@ -96,8 +99,8 @@
 #if IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_3C used with b/w driver class"
 #endif
-#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
-#error "neither BW nor 3C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
+#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_4C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
+#error "neither BW nor 3C nor 4C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
 #endif
 
 #endif

examples/GxEPD2_PagedDisplayUsingCallback/GxEPD2_display_selection_new_style.h

@@ -18,6 +18,7 @@
 // select the display class (only one), matching the kind of display panel
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C
+//#define GxEPD2_DISPLAY_CLASS GxEPD2_4C
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C
 
 // select the display driver class (only one) for your  panel
@@ -29,15 +30,15 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A, (WFT0154CZB3)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D, (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_GDEY0154D67 // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   128x250, IL3895, (HINK-E0213-G01), phased out
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 128x250, SSD1680, FPC-7528B)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   122x250, IL3895, (HINK-E0213-G01), phased out
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 122x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 122x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 122x250, SSD1680, FPC-7528B)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D, (WFT0213CZ16)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  128x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  122x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373), (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373), (WFT0260CZB2)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_266_BN // DEPG0266BN   152x296, SSD1680, (FPC7510), TTGO T5 V2.66, TTGO T5 V2.4.1
@@ -85,6 +86,8 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, EK79655 (GD7965), (WFT0583CZ61)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677, (HINK-E075A07-A0)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248c    // GDEY1248Z51 1304x984, UC8179, (WFT1248BZ23,WFT1248BZ24)
+// 4-color e-paper
+//#define GxEPD2_DRIVER_CLASS GxEPD2_437c     // Waveshare 4.37" 4-color
 // 7-color e-paper
 //#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color
 //#define GxEPD2_DRIVER_CLASS GxEPD2_730c_GDEY073D46 // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -104,12 +107,14 @@
 // somehow there should be an easier way to do this
 #define GxEPD2_BW_IS_GxEPD2_BW true
 #define GxEPD2_3C_IS_GxEPD2_3C true
+#define GxEPD2_4C_IS_GxEPD2_4C true
 #define GxEPD2_7C_IS_GxEPD2_7C true
 #define GxEPD2_1248_IS_GxEPD2_1248 true
 #define GxEPD2_1248c_IS_GxEPD2_1248c true
 #define IS_GxEPD(c, x) (c##x)
 #define IS_GxEPD2_BW(x) IS_GxEPD(GxEPD2_BW_IS_, x)
 #define IS_GxEPD2_3C(x) IS_GxEPD(GxEPD2_3C_IS_, x)
+#define IS_GxEPD2_4C(x) IS_GxEPD(GxEPD2_4C_IS_, x)
 #define IS_GxEPD2_7C(x) IS_GxEPD(GxEPD2_7C_IS_, x)
 #define IS_GxEPD2_1248(x) IS_GxEPD(GxEPD2_1248_IS_, x)
 #define IS_GxEPD2_1248c(x) IS_GxEPD(GxEPD2_1248c_IS_, x)
@@ -120,7 +125,7 @@
 #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-5000ul) // ~34000 base use, change 5000 to your application use
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -139,7 +144,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g.
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -172,7 +177,7 @@ GxEPD2_DISPLAY_CLASS < GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS) > di
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -191,7 +196,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -221,7 +226,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -238,7 +243,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 131072ul // e.g. half of available ram
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))

examples/GxEPD2_PagedDisplayUsingCallback/GxEPD2_selection_check.h

@@ -81,6 +81,8 @@
 #define GxEPD2_750c_Z08_IS_3C true
 #define GxEPD2_750c_Z90_IS_3C true
 #define GxEPD2_1248c_IS_3C true
+// 4-color e-paper
+#define GxEPD2_437c_IS_4C true
 // 7-color e-paper
 #define GxEPD2_565c_IS_7C true
 #define GxEPD2_730c_GDEY073D46_IS_7C true
@@ -89,6 +91,7 @@
 #define IS_GxEPD2_DRIVER(c, x) (c##x)
 #define IS_GxEPD2_DRIVER_BW(x) IS_GxEPD2_DRIVER(x, _IS_BW)
 #define IS_GxEPD2_DRIVER_3C(x) IS_GxEPD2_DRIVER(x, _IS_3C)
+#define IS_GxEPD2_DRIVER_4C(x) IS_GxEPD2_DRIVER(x, _IS_4C)
 #define IS_GxEPD2_DRIVER_7C(x) IS_GxEPD2_DRIVER(x, _IS_7C)
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_BW used with 3-color driver class"
@@ -96,8 +99,8 @@
 #if IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_3C used with b/w driver class"
 #endif
-#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
-#error "neither BW nor 3C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
+#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_4C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
+#error "neither BW nor 3C nor 4C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
 #endif
 
 #endif

examples/GxEPD2_RotaryUsingBusyCallback/GxEPD2_display_selection_new_style.h

@@ -18,6 +18,7 @@
 // select the display class (only one), matching the kind of display panel
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C
+//#define GxEPD2_DISPLAY_CLASS GxEPD2_4C
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C
 
 // select the display driver class (only one) for your  panel
@@ -29,15 +30,15 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A, (WFT0154CZB3)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D, (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_GDEY0154D67 // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   128x250, IL3895, (HINK-E0213-G01), phased out
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 128x250, SSD1680, FPC-7528B)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   122x250, IL3895, (HINK-E0213-G01), phased out
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 122x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 122x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 122x250, SSD1680, FPC-7528B)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D, (WFT0213CZ16)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  128x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  122x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373), (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373), (WFT0260CZB2)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_266_BN // DEPG0266BN   152x296, SSD1680, (FPC7510), TTGO T5 V2.66, TTGO T5 V2.4.1
@@ -85,6 +86,8 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, EK79655 (GD7965), (WFT0583CZ61)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677, (HINK-E075A07-A0)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248c    // GDEY1248Z51 1304x984, UC8179, (WFT1248BZ23,WFT1248BZ24)
+// 4-color e-paper
+//#define GxEPD2_DRIVER_CLASS GxEPD2_437c     // Waveshare 4.37" 4-color
 // 7-color e-paper
 //#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color
 //#define GxEPD2_DRIVER_CLASS GxEPD2_730c_GDEY073D46 // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -104,12 +107,14 @@
 // somehow there should be an easier way to do this
 #define GxEPD2_BW_IS_GxEPD2_BW true
 #define GxEPD2_3C_IS_GxEPD2_3C true
+#define GxEPD2_4C_IS_GxEPD2_4C true
 #define GxEPD2_7C_IS_GxEPD2_7C true
 #define GxEPD2_1248_IS_GxEPD2_1248 true
 #define GxEPD2_1248c_IS_GxEPD2_1248c true
 #define IS_GxEPD(c, x) (c##x)
 #define IS_GxEPD2_BW(x) IS_GxEPD(GxEPD2_BW_IS_, x)
 #define IS_GxEPD2_3C(x) IS_GxEPD(GxEPD2_3C_IS_, x)
+#define IS_GxEPD2_4C(x) IS_GxEPD(GxEPD2_4C_IS_, x)
 #define IS_GxEPD2_7C(x) IS_GxEPD(GxEPD2_7C_IS_, x)
 #define IS_GxEPD2_1248(x) IS_GxEPD(GxEPD2_1248_IS_, x)
 #define IS_GxEPD2_1248c(x) IS_GxEPD(GxEPD2_1248c_IS_, x)
@@ -120,7 +125,7 @@
 #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-5000ul) // ~34000 base use, change 5000 to your application use
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -139,7 +144,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g.
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -172,7 +177,7 @@ GxEPD2_DISPLAY_CLASS < GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS) > di
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -191,7 +196,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -221,7 +226,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -238,7 +243,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 131072ul // e.g. half of available ram
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))

examples/GxEPD2_RotaryUsingBusyCallback/GxEPD2_selection_check.h

@@ -81,6 +81,8 @@
 #define GxEPD2_750c_Z08_IS_3C true
 #define GxEPD2_750c_Z90_IS_3C true
 #define GxEPD2_1248c_IS_3C true
+// 4-color e-paper
+#define GxEPD2_437c_IS_4C true
 // 7-color e-paper
 #define GxEPD2_565c_IS_7C true
 #define GxEPD2_730c_GDEY073D46_IS_7C true
@@ -89,6 +91,7 @@
 #define IS_GxEPD2_DRIVER(c, x) (c##x)
 #define IS_GxEPD2_DRIVER_BW(x) IS_GxEPD2_DRIVER(x, _IS_BW)
 #define IS_GxEPD2_DRIVER_3C(x) IS_GxEPD2_DRIVER(x, _IS_3C)
+#define IS_GxEPD2_DRIVER_4C(x) IS_GxEPD2_DRIVER(x, _IS_4C)
 #define IS_GxEPD2_DRIVER_7C(x) IS_GxEPD2_DRIVER(x, _IS_7C)
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_BW used with 3-color driver class"
@@ -96,8 +99,8 @@
 #if IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_3C used with b/w driver class"
 #endif
-#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
-#error "neither BW nor 3C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
+#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_4C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
+#error "neither BW nor 3C nor 4C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
 #endif
 
 #endif

examples/GxEPD2_SD_Example/GxEPD2_display_selection_new_style.h

@@ -18,6 +18,7 @@
 // select the display class (only one), matching the kind of display panel
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C
+//#define GxEPD2_DISPLAY_CLASS GxEPD2_4C
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C
 
 // select the display driver class (only one) for your  panel
@@ -29,15 +30,15 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A, (WFT0154CZB3)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D, (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_GDEY0154D67 // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   128x250, IL3895, (HINK-E0213-G01), phased out
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 128x250, SSD1680, FPC-7528B)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   122x250, IL3895, (HINK-E0213-G01), phased out
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 122x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 122x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 122x250, SSD1680, FPC-7528B)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D, (WFT0213CZ16)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  128x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  122x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373), (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373), (WFT0260CZB2)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_266_BN // DEPG0266BN   152x296, SSD1680, (FPC7510), TTGO T5 V2.66, TTGO T5 V2.4.1
@@ -85,6 +86,8 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, EK79655 (GD7965), (WFT0583CZ61)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677, (HINK-E075A07-A0)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248c    // GDEY1248Z51 1304x984, UC8179, (WFT1248BZ23,WFT1248BZ24)
+// 4-color e-paper
+//#define GxEPD2_DRIVER_CLASS GxEPD2_437c     // Waveshare 4.37" 4-color
 // 7-color e-paper
 //#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color
 //#define GxEPD2_DRIVER_CLASS GxEPD2_730c_GDEY073D46 // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -104,12 +107,14 @@
 // somehow there should be an easier way to do this
 #define GxEPD2_BW_IS_GxEPD2_BW true
 #define GxEPD2_3C_IS_GxEPD2_3C true
+#define GxEPD2_4C_IS_GxEPD2_4C true
 #define GxEPD2_7C_IS_GxEPD2_7C true
 #define GxEPD2_1248_IS_GxEPD2_1248 true
 #define GxEPD2_1248c_IS_GxEPD2_1248c true
 #define IS_GxEPD(c, x) (c##x)
 #define IS_GxEPD2_BW(x) IS_GxEPD(GxEPD2_BW_IS_, x)
 #define IS_GxEPD2_3C(x) IS_GxEPD(GxEPD2_3C_IS_, x)
+#define IS_GxEPD2_4C(x) IS_GxEPD(GxEPD2_4C_IS_, x)
 #define IS_GxEPD2_7C(x) IS_GxEPD(GxEPD2_7C_IS_, x)
 #define IS_GxEPD2_1248(x) IS_GxEPD(GxEPD2_1248_IS_, x)
 #define IS_GxEPD2_1248c(x) IS_GxEPD(GxEPD2_1248c_IS_, x)
@@ -120,7 +125,7 @@
 #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-5000ul) // ~34000 base use, change 5000 to your application use
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -139,7 +144,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g.
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -172,7 +177,7 @@ GxEPD2_DISPLAY_CLASS < GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS) > di
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -191,7 +196,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -221,7 +226,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -238,7 +243,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 131072ul // e.g. half of available ram
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))

examples/GxEPD2_SD_Example/GxEPD2_selection_check.h

@@ -81,6 +81,8 @@
 #define GxEPD2_750c_Z08_IS_3C true
 #define GxEPD2_750c_Z90_IS_3C true
 #define GxEPD2_1248c_IS_3C true
+// 4-color e-paper
+#define GxEPD2_437c_IS_4C true
 // 7-color e-paper
 #define GxEPD2_565c_IS_7C true
 #define GxEPD2_730c_GDEY073D46_IS_7C true
@@ -89,6 +91,7 @@
 #define IS_GxEPD2_DRIVER(c, x) (c##x)
 #define IS_GxEPD2_DRIVER_BW(x) IS_GxEPD2_DRIVER(x, _IS_BW)
 #define IS_GxEPD2_DRIVER_3C(x) IS_GxEPD2_DRIVER(x, _IS_3C)
+#define IS_GxEPD2_DRIVER_4C(x) IS_GxEPD2_DRIVER(x, _IS_4C)
 #define IS_GxEPD2_DRIVER_7C(x) IS_GxEPD2_DRIVER(x, _IS_7C)
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_BW used with 3-color driver class"
@@ -96,8 +99,8 @@
 #if IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_3C used with b/w driver class"
 #endif
-#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
-#error "neither BW nor 3C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
+#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_4C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
+#error "neither BW nor 3C nor 4C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
 #endif
 
 #endif

examples/GxEPD2_SerialFlash_Example/GxEPD2_display_selection_new_style.h

@@ -18,6 +18,7 @@
 // select the display class (only one), matching the kind of display panel
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C
+//#define GxEPD2_DISPLAY_CLASS GxEPD2_4C
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C
 
 // select the display driver class (only one) for your  panel
@@ -29,15 +30,15 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A, (WFT0154CZB3)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D, (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_GDEY0154D67 // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   128x250, IL3895, (HINK-E0213-G01), phased out
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 128x250, SSD1680, FPC-7528B)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   122x250, IL3895, (HINK-E0213-G01), phased out
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 122x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 122x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 122x250, SSD1680, FPC-7528B)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D, (WFT0213CZ16)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  128x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  122x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373), (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373), (WFT0260CZB2)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_266_BN // DEPG0266BN   152x296, SSD1680, (FPC7510), TTGO T5 V2.66, TTGO T5 V2.4.1
@@ -85,6 +86,8 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, EK79655 (GD7965), (WFT0583CZ61)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677, (HINK-E075A07-A0)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248c    // GDEY1248Z51 1304x984, UC8179, (WFT1248BZ23,WFT1248BZ24)
+// 4-color e-paper
+//#define GxEPD2_DRIVER_CLASS GxEPD2_437c     // Waveshare 4.37" 4-color
 // 7-color e-paper
 //#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color
 //#define GxEPD2_DRIVER_CLASS GxEPD2_730c_GDEY073D46 // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -104,12 +107,14 @@
 // somehow there should be an easier way to do this
 #define GxEPD2_BW_IS_GxEPD2_BW true
 #define GxEPD2_3C_IS_GxEPD2_3C true
+#define GxEPD2_4C_IS_GxEPD2_4C true
 #define GxEPD2_7C_IS_GxEPD2_7C true
 #define GxEPD2_1248_IS_GxEPD2_1248 true
 #define GxEPD2_1248c_IS_GxEPD2_1248c true
 #define IS_GxEPD(c, x) (c##x)
 #define IS_GxEPD2_BW(x) IS_GxEPD(GxEPD2_BW_IS_, x)
 #define IS_GxEPD2_3C(x) IS_GxEPD(GxEPD2_3C_IS_, x)
+#define IS_GxEPD2_4C(x) IS_GxEPD(GxEPD2_4C_IS_, x)
 #define IS_GxEPD2_7C(x) IS_GxEPD(GxEPD2_7C_IS_, x)
 #define IS_GxEPD2_1248(x) IS_GxEPD(GxEPD2_1248_IS_, x)
 #define IS_GxEPD2_1248c(x) IS_GxEPD(GxEPD2_1248c_IS_, x)
@@ -120,7 +125,7 @@
 #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-5000ul) // ~34000 base use, change 5000 to your application use
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -139,7 +144,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g.
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -172,7 +177,7 @@ GxEPD2_DISPLAY_CLASS < GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS) > di
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -191,7 +196,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -221,7 +226,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -238,7 +243,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 131072ul // e.g. half of available ram
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))

examples/GxEPD2_SerialFlash_Example/GxEPD2_selection_check.h

@@ -81,6 +81,8 @@
 #define GxEPD2_750c_Z08_IS_3C true
 #define GxEPD2_750c_Z90_IS_3C true
 #define GxEPD2_1248c_IS_3C true
+// 4-color e-paper
+#define GxEPD2_437c_IS_4C true
 // 7-color e-paper
 #define GxEPD2_565c_IS_7C true
 #define GxEPD2_730c_GDEY073D46_IS_7C true
@@ -89,6 +91,7 @@
 #define IS_GxEPD2_DRIVER(c, x) (c##x)
 #define IS_GxEPD2_DRIVER_BW(x) IS_GxEPD2_DRIVER(x, _IS_BW)
 #define IS_GxEPD2_DRIVER_3C(x) IS_GxEPD2_DRIVER(x, _IS_3C)
+#define IS_GxEPD2_DRIVER_4C(x) IS_GxEPD2_DRIVER(x, _IS_4C)
 #define IS_GxEPD2_DRIVER_7C(x) IS_GxEPD2_DRIVER(x, _IS_7C)
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_BW used with 3-color driver class"
@@ -96,8 +99,8 @@
 #if IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_3C used with b/w driver class"
 #endif
-#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
-#error "neither BW nor 3C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
+#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_4C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
+#error "neither BW nor 3C nor 4C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
 #endif
 
 #endif

examples/GxEPD2_Spiffs_Example/GxEPD2_display_selection_new_style.h

@@ -18,6 +18,7 @@
 // select the display class (only one), matching the kind of display panel
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C
+//#define GxEPD2_DISPLAY_CLASS GxEPD2_4C
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C
 
 // select the display driver class (only one) for your  panel
@@ -29,15 +30,15 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A, (WFT0154CZB3)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D, (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_GDEY0154D67 // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   128x250, IL3895, (HINK-E0213-G01), phased out
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 128x250, SSD1680, FPC-7528B)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   122x250, IL3895, (HINK-E0213-G01), phased out
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 122x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 122x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 122x250, SSD1680, FPC-7528B)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D, (WFT0213CZ16)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  128x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  122x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373), (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373), (WFT0260CZB2)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_266_BN // DEPG0266BN   152x296, SSD1680, (FPC7510), TTGO T5 V2.66, TTGO T5 V2.4.1
@@ -85,6 +86,8 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, EK79655 (GD7965), (WFT0583CZ61)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677, (HINK-E075A07-A0)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248c    // GDEY1248Z51 1304x984, UC8179, (WFT1248BZ23,WFT1248BZ24)
+// 4-color e-paper
+//#define GxEPD2_DRIVER_CLASS GxEPD2_437c     // Waveshare 4.37" 4-color
 // 7-color e-paper
 //#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color
 //#define GxEPD2_DRIVER_CLASS GxEPD2_730c_GDEY073D46 // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -104,12 +107,14 @@
 // somehow there should be an easier way to do this
 #define GxEPD2_BW_IS_GxEPD2_BW true
 #define GxEPD2_3C_IS_GxEPD2_3C true
+#define GxEPD2_4C_IS_GxEPD2_4C true
 #define GxEPD2_7C_IS_GxEPD2_7C true
 #define GxEPD2_1248_IS_GxEPD2_1248 true
 #define GxEPD2_1248c_IS_GxEPD2_1248c true
 #define IS_GxEPD(c, x) (c##x)
 #define IS_GxEPD2_BW(x) IS_GxEPD(GxEPD2_BW_IS_, x)
 #define IS_GxEPD2_3C(x) IS_GxEPD(GxEPD2_3C_IS_, x)
+#define IS_GxEPD2_4C(x) IS_GxEPD(GxEPD2_4C_IS_, x)
 #define IS_GxEPD2_7C(x) IS_GxEPD(GxEPD2_7C_IS_, x)
 #define IS_GxEPD2_1248(x) IS_GxEPD(GxEPD2_1248_IS_, x)
 #define IS_GxEPD2_1248c(x) IS_GxEPD(GxEPD2_1248c_IS_, x)
@@ -120,7 +125,7 @@
 #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-5000ul) // ~34000 base use, change 5000 to your application use
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -139,7 +144,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g.
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -172,7 +177,7 @@ GxEPD2_DISPLAY_CLASS < GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS) > di
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -191,7 +196,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -221,7 +226,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -238,7 +243,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 131072ul // e.g. half of available ram
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))

examples/GxEPD2_Spiffs_Example/GxEPD2_selection_check.h

@@ -81,6 +81,8 @@
 #define GxEPD2_750c_Z08_IS_3C true
 #define GxEPD2_750c_Z90_IS_3C true
 #define GxEPD2_1248c_IS_3C true
+// 4-color e-paper
+#define GxEPD2_437c_IS_4C true
 // 7-color e-paper
 #define GxEPD2_565c_IS_7C true
 #define GxEPD2_730c_GDEY073D46_IS_7C true
@@ -89,6 +91,7 @@
 #define IS_GxEPD2_DRIVER(c, x) (c##x)
 #define IS_GxEPD2_DRIVER_BW(x) IS_GxEPD2_DRIVER(x, _IS_BW)
 #define IS_GxEPD2_DRIVER_3C(x) IS_GxEPD2_DRIVER(x, _IS_3C)
+#define IS_GxEPD2_DRIVER_4C(x) IS_GxEPD2_DRIVER(x, _IS_4C)
 #define IS_GxEPD2_DRIVER_7C(x) IS_GxEPD2_DRIVER(x, _IS_7C)
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_BW used with 3-color driver class"
@@ -96,8 +99,8 @@
 #if IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_3C used with b/w driver class"
 #endif
-#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
-#error "neither BW nor 3C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
+#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_4C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
+#error "neither BW nor 3C nor 4C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
 #endif
 
 #endif

examples/GxEPD2_U8G2_Fonts_Example/GxEPD2_display_selection_new_style.h

@@ -18,6 +18,7 @@
 // select the display class (only one), matching the kind of display panel
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C
+//#define GxEPD2_DISPLAY_CLASS GxEPD2_4C
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C
 
 // select the display driver class (only one) for your  panel
@@ -29,15 +30,15 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A, (WFT0154CZB3)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D, (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_GDEY0154D67 // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   128x250, IL3895, (HINK-E0213-G01), phased out
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 128x250, SSD1680, FPC-7528B)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   122x250, IL3895, (HINK-E0213-G01), phased out
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 122x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 122x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 122x250, SSD1680, FPC-7528B)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D, (WFT0213CZ16)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  128x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  122x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373), (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373), (WFT0260CZB2)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_266_BN // DEPG0266BN   152x296, SSD1680, (FPC7510), TTGO T5 V2.66, TTGO T5 V2.4.1
@@ -85,6 +86,8 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, EK79655 (GD7965), (WFT0583CZ61)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677, (HINK-E075A07-A0)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248c    // GDEY1248Z51 1304x984, UC8179, (WFT1248BZ23,WFT1248BZ24)
+// 4-color e-paper
+//#define GxEPD2_DRIVER_CLASS GxEPD2_437c     // Waveshare 4.37" 4-color
 // 7-color e-paper
 //#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color
 //#define GxEPD2_DRIVER_CLASS GxEPD2_730c_GDEY073D46 // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -104,12 +107,14 @@
 // somehow there should be an easier way to do this
 #define GxEPD2_BW_IS_GxEPD2_BW true
 #define GxEPD2_3C_IS_GxEPD2_3C true
+#define GxEPD2_4C_IS_GxEPD2_4C true
 #define GxEPD2_7C_IS_GxEPD2_7C true
 #define GxEPD2_1248_IS_GxEPD2_1248 true
 #define GxEPD2_1248c_IS_GxEPD2_1248c true
 #define IS_GxEPD(c, x) (c##x)
 #define IS_GxEPD2_BW(x) IS_GxEPD(GxEPD2_BW_IS_, x)
 #define IS_GxEPD2_3C(x) IS_GxEPD(GxEPD2_3C_IS_, x)
+#define IS_GxEPD2_4C(x) IS_GxEPD(GxEPD2_4C_IS_, x)
 #define IS_GxEPD2_7C(x) IS_GxEPD(GxEPD2_7C_IS_, x)
 #define IS_GxEPD2_1248(x) IS_GxEPD(GxEPD2_1248_IS_, x)
 #define IS_GxEPD2_1248c(x) IS_GxEPD(GxEPD2_1248c_IS_, x)
@@ -120,7 +125,7 @@
 #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-5000ul) // ~34000 base use, change 5000 to your application use
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -139,7 +144,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g.
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -172,7 +177,7 @@ GxEPD2_DISPLAY_CLASS < GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS) > di
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -191,7 +196,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -221,7 +226,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -238,7 +243,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 131072ul // e.g. half of available ram
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))

examples/GxEPD2_U8G2_Fonts_Example/GxEPD2_selection_check.h

@@ -81,6 +81,8 @@
 #define GxEPD2_750c_Z08_IS_3C true
 #define GxEPD2_750c_Z90_IS_3C true
 #define GxEPD2_1248c_IS_3C true
+// 4-color e-paper
+#define GxEPD2_437c_IS_4C true
 // 7-color e-paper
 #define GxEPD2_565c_IS_7C true
 #define GxEPD2_730c_GDEY073D46_IS_7C true
@@ -89,6 +91,7 @@
 #define IS_GxEPD2_DRIVER(c, x) (c##x)
 #define IS_GxEPD2_DRIVER_BW(x) IS_GxEPD2_DRIVER(x, _IS_BW)
 #define IS_GxEPD2_DRIVER_3C(x) IS_GxEPD2_DRIVER(x, _IS_3C)
+#define IS_GxEPD2_DRIVER_4C(x) IS_GxEPD2_DRIVER(x, _IS_4C)
 #define IS_GxEPD2_DRIVER_7C(x) IS_GxEPD2_DRIVER(x, _IS_7C)
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_BW used with 3-color driver class"
@@ -96,8 +99,8 @@
 #if IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_3C used with b/w driver class"
 #endif
-#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
-#error "neither BW nor 3C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
+#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_4C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
+#error "neither BW nor 3C nor 4C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
 #endif
 
 #endif

extras/tests/GxEPD2_MinimumExample/GxEPD2_display_selection_new_style.h

@@ -18,6 +18,7 @@
 // select the display class (only one), matching the kind of display panel
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C
+//#define GxEPD2_DISPLAY_CLASS GxEPD2_4C
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C
 
 // select the display driver class (only one) for your  panel
@@ -29,15 +30,15 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A, (WFT0154CZB3)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D, (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_GDEY0154D67 // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   128x250, IL3895, (HINK-E0213-G01), phased out
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 128x250, SSD1680, FPC-7528B)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   122x250, IL3895, (HINK-E0213-G01), phased out
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 122x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 122x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 122x250, SSD1680, FPC-7528B)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373), (WFT0213CZ16)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D, (WFT0213CZ16)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  128x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 128x250, SSD1680, (FPC-A002 20.04.08)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  122x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373), (WFT0154CZ17)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373), (WFT0260CZB2)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_266_BN // DEPG0266BN   152x296, SSD1680, (FPC7510), TTGO T5 V2.66, TTGO T5 V2.4.1
@@ -85,6 +86,8 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, EK79655 (GD7965), (WFT0583CZ61)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677, (HINK-E075A07-A0)
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248c    // GDEY1248Z51 1304x984, UC8179, (WFT1248BZ23,WFT1248BZ24)
+// 4-color e-paper
+//#define GxEPD2_DRIVER_CLASS GxEPD2_437c     // Waveshare 4.37" 4-color
 // 7-color e-paper
 //#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color
 //#define GxEPD2_DRIVER_CLASS GxEPD2_730c_GDEY073D46 // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
@@ -104,12 +107,14 @@
 // somehow there should be an easier way to do this
 #define GxEPD2_BW_IS_GxEPD2_BW true
 #define GxEPD2_3C_IS_GxEPD2_3C true
+#define GxEPD2_4C_IS_GxEPD2_4C true
 #define GxEPD2_7C_IS_GxEPD2_7C true
 #define GxEPD2_1248_IS_GxEPD2_1248 true
 #define GxEPD2_1248c_IS_GxEPD2_1248c true
 #define IS_GxEPD(c, x) (c##x)
 #define IS_GxEPD2_BW(x) IS_GxEPD(GxEPD2_BW_IS_, x)
 #define IS_GxEPD2_3C(x) IS_GxEPD(GxEPD2_3C_IS_, x)
+#define IS_GxEPD2_4C(x) IS_GxEPD(GxEPD2_4C_IS_, x)
 #define IS_GxEPD2_7C(x) IS_GxEPD(GxEPD2_7C_IS_, x)
 #define IS_GxEPD2_1248(x) IS_GxEPD(GxEPD2_1248_IS_, x)
 #define IS_GxEPD2_1248c(x) IS_GxEPD(GxEPD2_1248c_IS_, x)
@@ -120,7 +125,7 @@
 #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-5000ul) // ~34000 base use, change 5000 to your application use
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -139,7 +144,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g.
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -172,7 +177,7 @@ GxEPD2_DISPLAY_CLASS < GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS) > di
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -191,7 +196,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -221,7 +226,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -238,7 +243,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 131072ul // e.g. half of available ram
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))

extras/tests/GxEPD2_MinimumExample/GxEPD2_selection_check.h

@@ -81,6 +81,8 @@
 #define GxEPD2_750c_Z08_IS_3C true
 #define GxEPD2_750c_Z90_IS_3C true
 #define GxEPD2_1248c_IS_3C true
+// 4-color e-paper
+#define GxEPD2_437c_IS_4C true
 // 7-color e-paper
 #define GxEPD2_565c_IS_7C true
 #define GxEPD2_730c_GDEY073D46_IS_7C true
@@ -89,6 +91,7 @@
 #define IS_GxEPD2_DRIVER(c, x) (c##x)
 #define IS_GxEPD2_DRIVER_BW(x) IS_GxEPD2_DRIVER(x, _IS_BW)
 #define IS_GxEPD2_DRIVER_3C(x) IS_GxEPD2_DRIVER(x, _IS_3C)
+#define IS_GxEPD2_DRIVER_4C(x) IS_GxEPD2_DRIVER(x, _IS_4C)
 #define IS_GxEPD2_DRIVER_7C(x) IS_GxEPD2_DRIVER(x, _IS_7C)
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_BW used with 3-color driver class"
@@ -96,8 +99,8 @@
 #if IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_3C used with b/w driver class"
 #endif
-#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
-#error "neither BW nor 3C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
+#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_4C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
+#error "neither BW nor 3C nor 4C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
 #endif
 
 #endif

extras/tests/GxEPD2_RefreshTests/GxEPD2_display_selection.h

@@ -22,14 +22,21 @@
 //GxEPD2_BW<GxEPD2_154_T8, GxEPD2_154_T8::HEIGHT> display(GxEPD2_154_T8(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154T8  152x152, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0154M10 152x152, UC8151D
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
+//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_270_GDEY027T91, GxEPD2_270_GDEY027T91::HEIGHT> display(GxEPD2_270_GDEY027T91(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY027T91 176x264, SSD1680
 //GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH029A1 128x296, SSD1608 (IL3820)
 //GxEPD2_BW<GxEPD2_290_T5, GxEPD2_290_T5::HEIGHT> display(GxEPD2_290_T5(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW029T5 128x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_290_T5D, GxEPD2_290_T5D::HEIGHT> display(GxEPD2_290_T5D(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW029T5D 128x296, UC8151D
@@ -38,18 +45,16 @@
 //GxEPD2_BW<GxEPD2_290_T94_V2, GxEPD2_290_T94_V2::HEIGHT> display(GxEPD2_290_T94_V2(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
 //GxEPD2_BW<GxEPD2_290_BS, GxEPD2_290_BS::HEIGHT> display(GxEPD2_290_BS(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0290BS 128x296, SSD1680
 //GxEPD2_BW<GxEPD2_290_M06, GxEPD2_290_M06::HEIGHT> display(GxEPD2_290_M06(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW029M06  128x296, UC8151D
-//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
-//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW027W3 176x264, EK79652 (IL91874)
-//GxEPD2_BW<GxEPD2_270_T91, GxEPD2_270_T91::HEIGHT> display(GxEPD2_270_T91(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY027T91 176x264, SSD1680
+//GxEPD2_BW<GxEPD2_290_GDEY029T94, GxEPD2_290_GDEY029T94::HEIGHT> display(GxEPD2_290_GDEY029T94(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
 //GxEPD2_BW<GxEPD2_371, GxEPD2_371::HEIGHT> display(GxEPD2_371(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0371W7 240x416, UC8171 (IL0324)
 //GxEPD2_BW<GxEPD2_370_TC1, GxEPD2_370_TC1::HEIGHT> display(GxEPD2_370_TC1(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
 //GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW042T2 400x300, UC8176 (IL0398)
 //GxEPD2_BW<GxEPD2_420_M01, GxEPD2_420_M01::HEIGHT> display(GxEPD2_420_M01(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW042M01 400x300, UC8176 (IL0398)
+//GxEPD2_BW<GxEPD2_420_GDEY042T91, GxEPD2_420_GDEY042T91::HEIGHT> display(GxEPD2_420_GDEY042T91(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); GDEY042T91, 400x300, SSD1683 (no inking)
 // can use only half buffer size
 //GxEPD2_BW < GxEPD2_583, GxEPD2_583::HEIGHT / 2 > display(GxEPD2_583(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0583T7 600x448, UC8159c (IL0371)
 //GxEPD2_BW < GxEPD2_583_T8, GxEPD2_583_T8::HEIGHT / 2 > display(GxEPD2_583_T8(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW < GxEPD2_583_GDEQ0583T31, GxEPD2_583_GDEQ0583T31::HEIGHT / 2 > display(GxEPD2_583_GDEQ0583T31(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
 //GxEPD2_BW < GxEPD2_750, GxEPD2_750::HEIGHT / 2 > display(GxEPD2_750(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW075T8 640x384, UC8159c (IL0371)
 //GxEPD2_BW < GxEPD2_750_T7, GxEPD2_750_T7::HEIGHT / 2 > display(GxEPD2_750_T7(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW075T7 800x480, EK79655 (GD7965)
 //GxEPD2_BW < GxEPD2_750_YT7, GxEPD2_750_YT7::HEIGHT / 2 > display(GxEPD2_750_YT7(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY075T7 800x480, UC8179 (GD7965)
@@ -60,11 +65,11 @@
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213Z16 104x212, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_213_Z19c, GxEPD2_213_Z19c::HEIGHT> display(GxEPD2_213_Z19c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0213Z19 104x212, UC8151D
 //GxEPD2_3C<GxEPD2_213_Z98c, GxEPD2_213_Z98c::HEIGHT> display(GxEPD2_213_Z98c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0213Z98 122x250, SSD1680
+//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0266Z90 152x296, SSD1680
+//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW029Z10 128x296, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_290_Z13c, GxEPD2_290_Z13c::HEIGHT> display(GxEPD2_290_Z13c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH029Z13 128x296, UC8151D
 //GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEM029C90 128x296, SSD1680
-//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY0266Z90 152x296, SSD1680
-//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW027C44 176x264, IL91874
 // can use only half buffer size
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT / 2> display(GxEPD2_420c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW042Z15 400x300, UC8176 (IL0398)
 //GxEPD2_3C<GxEPD2_420c_Z21, GxEPD2_420c_Z21::HEIGHT / 2> display(GxEPD2_420c_Z21(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEQ042Z21 400x300, UC8276
@@ -74,9 +79,12 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C < GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4 > display(GxEPD2_750c_Z08(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C < GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 4 > display(GxEPD2_750c_Z90(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_3C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 5.65" 7-color (3C graphics)
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // Waveshare 5.65" 7-color
+//GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 6 > display(GxEPD2_730c_GDEY073D46(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
 // grey levels parallel IF e-papers on Waveshare e-Paper IT8951 Driver HAT
 // HRDY -> 4, RST -> 2, CS -> SS(15), SCK -> SCK(14), MOSI -> MOSI(D7(13)), MISO -> MISO(D6(12)), GND -> GND, 5V -> 5V
 // note: 5V supply needs to be exact and strong; 5V pin of USB powered Wemos D1 mini doesn't work!
@@ -93,14 +101,21 @@
 //GxEPD2_BW<GxEPD2_154_T8, GxEPD2_154_T8::HEIGHT> display(GxEPD2_154_T8(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0154T8  152x152, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0154M10 152x152, UC8151D
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW026T0 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW026M01 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
+//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_270_GDEY027T91, GxEPD2_270_GDEY027T91::HEIGHT> display(GxEPD2_270_GDEY027T91(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY027T91 176x264, SSD1680
 //GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH029A1 128x296, SSD1608 (IL3820)
 //GxEPD2_BW<GxEPD2_290_T5, GxEPD2_290_T5::HEIGHT> display(GxEPD2_290_T5(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW029T5 128x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_290_T5D, GxEPD2_290_T5D::HEIGHT> display(GxEPD2_290_T5D(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW029T5D 128x296, UC8151D
@@ -109,18 +124,16 @@
 //GxEPD2_BW<GxEPD2_290_T94_V2, GxEPD2_290_T94_V2::HEIGHT> display(GxEPD2_290_T94_V2(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
 //GxEPD2_BW<GxEPD2_290_BS, GxEPD2_290_BS::HEIGHT> display(GxEPD2_290_BS(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0290BS 128x296, SSD1680
 //GxEPD2_BW<GxEPD2_290_M06, GxEPD2_290_M06::HEIGHT> display(GxEPD2_290_M06(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW029M06  128x296, UC8151D
-//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW026T0 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW026M01 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
-//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW027W3 176x264, EK79652 (IL91874)
-//GxEPD2_BW<GxEPD2_270_T91, GxEPD2_270_T91::HEIGHT> display(GxEPD2_270_T91(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY027T91 176x264, SSD1680
+//GxEPD2_BW<GxEPD2_290_GDEY029T94, GxEPD2_290_GDEY029T94::HEIGHT> display(GxEPD2_290_GDEY029T94(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
 //GxEPD2_BW<GxEPD2_371, GxEPD2_371::HEIGHT> display(GxEPD2_371(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0371W7 240x416, UC8171 (IL0324)
 //GxEPD2_BW<GxEPD2_370_TC1, GxEPD2_370_TC1::HEIGHT> display(GxEPD2_370_TC1(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
 //GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW042T2 400x300, UC8176 (IL0398)
 //GxEPD2_BW<GxEPD2_420_M01, GxEPD2_420_M01::HEIGHT> display(GxEPD2_420_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW042M01 400x300, UC8176 (IL0398)
+//GxEPD2_BW<GxEPD2_420_GDEY042T91, GxEPD2_420_GDEY042T91::HEIGHT> display(GxEPD2_420_GDEY042T91(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); GDEY042T91, 400x300, SSD1683 (no inking)
 // can use only half buffer size
 //GxEPD2_BW < GxEPD2_583, GxEPD2_583::HEIGHT / 2 > display(GxEPD2_583(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0583T7 600x448, UC8159c (IL0371)
 //GxEPD2_BW < GxEPD2_583_T8, GxEPD2_583_T8::HEIGHT / 2 > display(GxEPD2_583_T8(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW < GxEPD2_583_GDEQ0583T31, GxEPD2_583_GDEQ0583T31::HEIGHT / 2 > display(GxEPD2_583_GDEQ0583T31(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
 //GxEPD2_BW < GxEPD2_750, GxEPD2_750::HEIGHT / 2 > display(GxEPD2_750(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW075T8 640x384, UC8159c (IL0371)
 //GxEPD2_BW < GxEPD2_750_T7, GxEPD2_750_T7::HEIGHT / 2 > display(GxEPD2_750_T7(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW075T7 800x480, EK79655 (GD7965)
 //GxEPD2_BW < GxEPD2_750_YT7, GxEPD2_750_YT7::HEIGHT / 2 > display(GxEPD2_750_YT7(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY075T7 800x480, UC8179 (GD7965)
@@ -131,11 +144,11 @@
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213Z16 104x212, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_213_Z19c, GxEPD2_213_Z19c::HEIGHT> display(GxEPD2_213_Z19c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0213Z19 104x212, UC8151D
 //GxEPD2_3C<GxEPD2_213_Z98c, GxEPD2_213_Z98c::HEIGHT> display(GxEPD2_213_Z98c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0213Z98 122x250, SSD1680
+//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0266Z90 152x296, SSD1680
+//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW029Z10 128x296, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_290_Z13c, GxEPD2_290_Z13c::HEIGHT> display(GxEPD2_290_Z13c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH029Z13 128x296, UC8151D
 //GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEM029C90 128x296, SSD1680
-//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY0266Z90 152x296, SSD1680
-//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW027C44 176x264, IL91874
 // can use only half buffer size
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT / 2> display(GxEPD2_420c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW042Z15 400x300, UC8176 (IL0398)
 //GxEPD2_3C<GxEPD2_420c_Z21, GxEPD2_420c_Z21::HEIGHT / 2> display(GxEPD2_420c_Z21(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEQ042Z21 400x300, UC8276
@@ -145,8 +158,11 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4> display(GxEPD2_750c_Z08(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 4> display(GxEPD2_750c_Z90(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // Waveshare 5.65" 7-color
+//GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 6 > display(GxEPD2_730c_GDEY073D46(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
 #endif
 
 #if defined(ESP32)
@@ -158,14 +174,21 @@
 //GxEPD2_BW<GxEPD2_154_T8, GxEPD2_154_T8::HEIGHT> display(GxEPD2_154_T8(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154T8  152x152, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0154M10 152x152, UC8151D
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.4.1
+//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_270_GDEY027T91, GxEPD2_270_GDEY027T91::HEIGHT> display(GxEPD2_270_GDEY027T91(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY027T91 176x264, SSD1680
 //GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH029A1 128x296, SSD1608 (IL3820)
 //GxEPD2_BW<GxEPD2_290_T5, GxEPD2_290_T5::HEIGHT> display(GxEPD2_290_T5(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW029T5 128x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_290_T5D, GxEPD2_290_T5D::HEIGHT> display(GxEPD2_290_T5D(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW029T5D 128x296, UC8151D
@@ -174,17 +197,15 @@
 //GxEPD2_BW<GxEPD2_290_T94_V2, GxEPD2_290_T94_V2::HEIGHT> display(GxEPD2_290_T94_V2(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
 //GxEPD2_BW<GxEPD2_290_BS, GxEPD2_290_BS::HEIGHT> display(GxEPD2_290_BS(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0290BS 128x296, SSD1680
 //GxEPD2_BW<GxEPD2_290_M06, GxEPD2_290_M06::HEIGHT> display(GxEPD2_290_M06(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW029M06  128x296, UC8151D
-//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.4.1
-//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW027W3 176x264, EK79652 (IL91874)
-//GxEPD2_BW<GxEPD2_270_T91, GxEPD2_270_T91::HEIGHT> display(GxEPD2_270_T91(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY027T91 176x264, SSD1680
+//GxEPD2_BW<GxEPD2_290_GDEY029T94, GxEPD2_290_GDEY029T94::HEIGHT> display(GxEPD2_290_GDEY029T94(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
 //GxEPD2_BW<GxEPD2_371, GxEPD2_371::HEIGHT> display(GxEPD2_371(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0371W7 240x416, UC8171 (IL0324)
 //GxEPD2_BW<GxEPD2_370_TC1, GxEPD2_370_TC1::HEIGHT> display(GxEPD2_370_TC1(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
 //GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW042T2 400x300, UC8176 (IL0398)
 //GxEPD2_BW<GxEPD2_420_M01, GxEPD2_420_M01::HEIGHT> display(GxEPD2_420_M01(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW042M01 400x300, UC8176 (IL0398)
+//GxEPD2_BW<GxEPD2_420_GDEY042T91, GxEPD2_420_GDEY042T91::HEIGHT> display(GxEPD2_420_GDEY042T91(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); GDEY042T91, 400x300, SSD1683 (no inking)
 //GxEPD2_BW<GxEPD2_583, GxEPD2_583::HEIGHT> display(GxEPD2_583(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0583T7 600x448, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_583_T8, GxEPD2_583_T8::HEIGHT> display(GxEPD2_583_T8(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW<GxEPD2_583_GDEQ0583T31, GxEPD2_583_GDEQ0583T31::HEIGHT> display(GxEPD2_583_GDEQ0583T31(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
 //GxEPD2_BW<GxEPD2_750, GxEPD2_750::HEIGHT> display(GxEPD2_750(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075T8 640x384, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_750_T7, GxEPD2_750_T7::HEIGHT> display(GxEPD2_750_T7(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075T7 800x480, EK79655 (GD7965)
 //GxEPD2_BW<GxEPD2_750_YT7, GxEPD2_750_YT7::HEIGHT> display(GxEPD2_750_YT7(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY075T7 800x480, UC8179 (GD7965)
@@ -195,11 +216,11 @@
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213Z16 104x212, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_213_Z19c, GxEPD2_213_Z19c::HEIGHT> display(GxEPD2_213_Z19c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0213Z19 104x212, UC8151D
 //GxEPD2_3C<GxEPD2_213_Z98c, GxEPD2_213_Z98c::HEIGHT> display(GxEPD2_213_Z98c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0213Z98 122x250, SSD1680
+//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0266Z90 152x296, SSD1680
+//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW029Z10 128x296, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_290_Z13c, GxEPD2_290_Z13c::HEIGHT> display(GxEPD2_290_Z13c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH029Z13 128x296, UC8151D
 //GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM029C90 128x296, SSD1680
-//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY0266Z90 152x296, SSD1680
-//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW042Z15 400x300, UC8176 (IL0398)
 //GxEPD2_3C<GxEPD2_420c_Z21, GxEPD2_420c_Z21::HEIGHT> display(GxEPD2_420c_Z21(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEQ042Z21 400x300, UC8276
 //GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0583Z21 600x448, UC8179 (IL0371)
@@ -207,9 +228,12 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 2> display(GxEPD2_750c_Z90(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_3C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 5.65" 7-color (3C graphics)
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // Waveshare 5.65" 7-color
+//GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 4 > display(GxEPD2_730c_GDEY073D46(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
 
 // grey levels parallel IF e-papers on Waveshare e-Paper IT8951 Driver HAT
 // HRDY -> 4, RST -> 16, CS -> SS(5), SCK -> SCK(18), MOSI -> MOSI(23), MISO -> MISO(19), GND -> GND, 5V -> 5V
@@ -242,14 +266,21 @@
 //GxEPD2_BW<GxEPD2_154_T8, GxEPD2_154_T8::HEIGHT> display(GxEPD2_154_T8(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0154T8  152x152, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0154M10 152x152, UC8151D
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW026T0 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW026M01 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.4.1
+//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_270_GDEY027T91, GxEPD2_270_GDEY027T91::HEIGHT> display(GxEPD2_270_GDEY027T91(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY027T91 176x264, SSD1680
 //GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH029A1 128x296, SSD1608 (IL3820)
 //GxEPD2_BW<GxEPD2_290_T5, GxEPD2_290_T5::HEIGHT> display(GxEPD2_290_T5(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW029T5 128x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_290_T5D, GxEPD2_290_T5D::HEIGHT> display(GxEPD2_290_T5D(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW029T5D 128x296, UC8151D
@@ -258,17 +289,15 @@
 //GxEPD2_BW<GxEPD2_290_T94_V2, GxEPD2_290_T94_V2::HEIGHT> display(GxEPD2_290_T94_V2(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
 //GxEPD2_BW<GxEPD2_290_BS, GxEPD2_290_BS::HEIGHT> display(GxEPD2_290_BS(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0290BS 128x296, SSD1680
 //GxEPD2_BW<GxEPD2_290_M06, GxEPD2_290_M06::HEIGHT> display(GxEPD2_290_M06(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW029M06  128x296, UC8151D
-//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW026T0 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW026M01 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.4.1
-//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW027W3 176x264, EK79652 (IL91874)
-//GxEPD2_BW<GxEPD2_270_T91, GxEPD2_270_T91::HEIGHT> display(GxEPD2_270_T91(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY027T91 176x264, SSD1680
+//GxEPD2_BW<GxEPD2_290_GDEY029T94, GxEPD2_290_GDEY029T94::HEIGHT> display(GxEPD2_290_GDEY029T94(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
 //GxEPD2_BW<GxEPD2_371, GxEPD2_371::HEIGHT> display(GxEPD2_371(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0371W7 240x416, UC8171 (IL0324)
 //GxEPD2_BW<GxEPD2_370_TC1, GxEPD2_370_TC1::HEIGHT> display(GxEPD2_370_TC1(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
 //GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW042T2 400x300, UC8176 (IL0398)
 //GxEPD2_BW<GxEPD2_420_M01, GxEPD2_420_M01::HEIGHT> display(GxEPD2_420_M01(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW042M01 400x300, UC8176 (IL0398)
+//GxEPD2_BW<GxEPD2_420_GDEY042T91, GxEPD2_420_GDEY042T91::HEIGHT> display(GxEPD2_420_GDEY042T91(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); GDEY042T91, 400x300, SSD1683 (no inking)
 //GxEPD2_BW<GxEPD2_583, GxEPD2_583::HEIGHT> display(GxEPD2_583(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0583T7 600x448, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_583_T8, GxEPD2_583_T8::HEIGHT> display(GxEPD2_583_T8(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW<GxEPD2_583_GDEQ0583T31, GxEPD2_583_GDEQ0583T31::HEIGHT> display(GxEPD2_583_GDEQ0583T31(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
 //GxEPD2_BW<GxEPD2_750, GxEPD2_750::HEIGHT> display(GxEPD2_750(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW075T8 640x384, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_750_T7, GxEPD2_750_T7::HEIGHT> display(GxEPD2_750_T7(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW075T7 800x480, EK79655 (GD7965)
 //GxEPD2_BW<GxEPD2_750_YT7, GxEPD2_750_YT7::HEIGHT> display(GxEPD2_750_YT7(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY075T7 800x480, UC8179 (GD7965)
@@ -279,11 +308,11 @@
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0213Z16 104x212, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_213_Z19c, GxEPD2_213_Z19c::HEIGHT> display(GxEPD2_213_Z19c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH0213Z19 104x212, UC8151D
 //GxEPD2_3C<GxEPD2_213_Z98c, GxEPD2_213_Z98c::HEIGHT> display(GxEPD2_213_Z98c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0213Z98 122x250, SSD1680
+//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0266Z90 152x296, SSD1680
+//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW029Z10 128x296, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_290_Z13c, GxEPD2_290_Z13c::HEIGHT> display(GxEPD2_290_Z13c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH029Z13 128x296, UC8151D
 //GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEM029C90 128x296, SSD1680
-//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY0266Z90 152x296, SSD1680
-//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW042Z15 400x300, UC8176 (IL0398)
 //GxEPD2_3C<GxEPD2_420c_Z21, GxEPD2_420c_Z21::HEIGHT> display(GxEPD2_420c_Z21(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEQ042Z21 400x300, UC8276
 //GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW0583Z21 600x448, UC8179 (IL0371)
@@ -291,9 +320,12 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 2> display(GxEPD2_750c_Z90(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_3C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare 5.65" 7-color (3C graphics)
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare 5.65" 7-color
+//GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 4 > display(GxEPD2_730c_GDEY073D46(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
 #endif
 
 // can't use package "STMF1 Boards (STM32Duino.com)" (Roger Clark) anymore with Adafruit_GFX, use "STM32 Boards (selected from submenu)" (STMicroelectronics)
@@ -308,14 +340,21 @@
 //GxEPD2_BW<GxEPD2_154_T8, MAX_HEIGHT(GxEPD2_154_T8)> display(GxEPD2_154_T8(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0154T8  152x152, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0154M10 152x152, UC8151D
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW026T0 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW026M01 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
+//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_270_GDEY027T91, MAX_HEIGHT(GxEPD2_270_GDEY027T91)> display(GxEPD2_270_GDEY027T91(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY027T91 176x264, SSD1680
 //GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH029A1 128x296, SSD1608 (IL3820)
 //GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW029T5 128x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_290_T5D, MAX_HEIGHT(GxEPD2_290_T5D)> display(GxEPD2_290_T5D(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW029T5D 128x296, UC8151D
@@ -324,17 +363,15 @@
 //GxEPD2_BW<GxEPD2_290_T94_V2, MAX_HEIGHT(GxEPD2_290_T94_V2)> display(GxEPD2_290_T94_V2(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
 //GxEPD2_BW<GxEPD2_290_BS, MAX_HEIGHT(GxEPD2_290_BS)> display(GxEPD2_290_BS(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0290BS 128x296, SSD1680
 //GxEPD2_BW<GxEPD2_290_M06, MAX_HEIGHT(GxEPD2_290_M06)> display(GxEPD2_290_M06(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW029M06  128x296, UC8151D
-//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW026T0 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW026M01 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
-//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW027W3 176x264, EK79652 (IL91874)
-//GxEPD2_BW<GxEPD2_270_T91, MAX_HEIGHT(GxEPD2_270_T91)> display(GxEPD2_270_T91(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY027T91 176x264, SSD1680
+//GxEPD2_BW<GxEPD2_290_GDEY029T94, MAX_HEIGHT(GxEPD2_290_GDEY029T94)> display(GxEPD2_290_GDEY029T94(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
 //GxEPD2_BW<GxEPD2_371, MAX_HEIGHT(GxEPD2_371)> display(GxEPD2_371(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0371W7 240x416, UC8171 (IL0324)
 //GxEPD2_BW<GxEPD2_370_TC1, MAX_HEIGHT(GxEPD2_370_TC1)> display(GxEPD2_370_TC1(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
 //GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW042T2 400x300, UC8176 (IL0398)
 //GxEPD2_BW<GxEPD2_420_M01, MAX_HEIGHT(GxEPD2_420_M01)> display(GxEPD2_420_M01(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW042M01 400x300, UC8176 (IL0398)
+//GxEPD2_BW<GxEPD2_420_GDEY042T91, MAX_HEIGHT(GxEPD2_420_GDEY042T91)> display(GxEPD2_420_GDEY042T91(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); GDEY042T91, 400x300, SSD1683 (no inking)
 //GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0583T7 600x448, UC8159c (IL0371)
 //GxEPD2_BW <GxEPD2_583_T8,  MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW<GxEPD2_583_GDEQ0583T31, MAX_HEIGHT(GxEPD2_583_GDEQ0583T31)> display(GxEPD2_583_GDEQ0583T31(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
 //GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075T8 640x384, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_750_T7, MAX_HEIGHT(GxEPD2_750_T7)> display(GxEPD2_750_T7(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075T7 800x480, EK79655 (GD7965)
 //GxEPD2_BW<GxEPD2_750_YT7, MAX_HEIGHT(GxEPD2_750_YT7)> display(GxEPD2_750_YT7(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY075T7 800x480, UC8179 (GD7965)
@@ -346,11 +383,11 @@
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0213Z16 104x212, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_213_Z19c, MAX_HEIGHT_3C(GxEPD2_213_Z19c)> display(GxEPD2_213_Z19c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH0213Z19 104x212, UC8151D
 //GxEPD2_3C<GxEPD2_213_Z98c, MAX_HEIGHT_3C(GxEPD2_213_Z98c)> display(GxEPD2_213_Z98c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0213Z98 122x250, SSD1680
+//GxEPD2_3C<GxEPD2_266c, MAX_HEIGHT_3C(GxEPD2_266c)> display(GxEPD2_266c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0266Z90 152x296, SSD1680
+//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW029Z10 128x296, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_290_Z13c, MAX_HEIGHT_3C(GxEPD2_290_Z13c)> display(GxEPD2_290_Z13c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH029Z13 128x296, UC8151D
 //GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEM029C90 128x296, SSD1680
-//GxEPD2_3C<GxEPD2_266c, MAX_HEIGHT_3C(GxEPD2_266c)> display(GxEPD2_266c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY0266Z90 152x296, SSD1680
-//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW042Z15 400x300, UC8176 (IL0398)
 //GxEPD2_3C<GxEPD2_420c_Z21, MAX_HEIGHT_3C(GxEPD2_420c_Z21)> display(GxEPD2_420c_Z21(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEQ042Z21 400x300, UC8276
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW0583Z21 600x448, UC8179 (IL0371)
@@ -358,9 +395,12 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // Waveshare 5.65" 7-color
+//GxEPD2_7C<GxEPD2_730c_GDEY073D46, MAX_HEIGHT_7C(GxEPD2_730c_GDEY073D46)> display(GxEPD2_730c_GDEY073D46(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
 #undef MAX_DISPLAY_BUFFER_SIZE
 #undef MAX_HEIGHT
 #undef MAX_HEIGHT_3C
@@ -382,14 +422,21 @@
 //GxEPD2_BW<GxEPD2_154_T8, MAX_HEIGHT(GxEPD2_154_T8)> display(GxEPD2_154_T8(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154T8  152x152, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
+//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_270_GDEY027T91, MAX_HEIGHT(GxEPD2_270_GDEY027T91)> display(GxEPD2_270_GDEY027T91(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY027T91 176x264, SSD1680
 //GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH029A1 128x296, SSD1608 (IL3820)
 //GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029T5 128x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_290_T5D, MAX_HEIGHT(GxEPD2_290_T5D)> display(GxEPD2_290_T5D(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029T5D 128x296, UC8151D
@@ -398,17 +445,15 @@
 //GxEPD2_BW<GxEPD2_290_T94_V2, MAX_HEIGHT(GxEPD2_290_T94_V2)> display(GxEPD2_290_T94_V2(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
 //GxEPD2_BW<GxEPD2_290_BS, MAX_HEIGHT(GxEPD2_290_BS)> display(GxEPD2_290_BS(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0290BS 128x296, SSD1680
 //GxEPD2_BW<GxEPD2_290_M06, MAX_HEIGHT(GxEPD2_290_M06)> display(GxEPD2_290_M06(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029M06  128x296, UC8151D
-//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
-//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3 176x264, EK79652 (IL91874)
-//GxEPD2_BW<GxEPD2_270_T91, MAX_HEIGHT(GxEPD2_270_T91)> display(GxEPD2_270_T91(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY027T91 176x264, SSD1680
+//GxEPD2_BW<GxEPD2_290_GDEY029T94, MAX_HEIGHT(GxEPD2_290_GDEY029T94)> display(GxEPD2_290_GDEY029T94(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
 //GxEPD2_BW<GxEPD2_371, MAX_HEIGHT(GxEPD2_371)> display(GxEPD2_371(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0371W7 240x416, UC8171 (IL0324)
 //GxEPD2_BW<GxEPD2_370_TC1, MAX_HEIGHT(GxEPD2_370_TC1)> display(GxEPD2_370_TC1(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
 //GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042T2 400x300, UC8176 (IL0398)
 //GxEPD2_BW<GxEPD2_420_M01, MAX_HEIGHT(GxEPD2_420_M01)> display(GxEPD2_420_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042M01 400x300, UC8176 (IL0398)
+//GxEPD2_BW<GxEPD2_420_GDEY042T91, MAX_HEIGHT(GxEPD2_420_GDEY042T91)> display(GxEPD2_420_GDEY042T91(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); GDEY042T91, 400x300, SSD1683 (no inking)
 //GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T7 600x448, UC8159c (IL0371)
-//GxEPD2_BW <GxEPD2_583_T8,  MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW<GxEPD2_583_T8, MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW<GxEPD2_583_GDEQ0583T31, MAX_HEIGHT(GxEPD2_583_GDEQ0583T31)> display(GxEPD2_583_GDEQ0583T31(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
 //GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075T8 640x384, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_750_T7, MAX_HEIGHT(GxEPD2_750_T7)> display(GxEPD2_750_T7(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075T7 800x480, EK79655 (GD7965)
 //GxEPD2_BW<GxEPD2_750_YT7, MAX_HEIGHT(GxEPD2_750_YT7)> display(GxEPD2_750_YT7(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY075T7 800x480, UC8179 (GD7965)
@@ -420,11 +465,11 @@
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213Z16 104x212, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_213_Z19c, MAX_HEIGHT_3C(GxEPD2_213_Z19c)> display(GxEPD2_213_Z19c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213Z19 104x212, UC8151D
 //GxEPD2_3C<GxEPD2_213_Z98c, MAX_HEIGHT_3C(GxEPD2_213_Z98c)> display(GxEPD2_213_Z98c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213Z98 122x250, SSD1680
+//GxEPD2_3C<GxEPD2_266c, MAX_HEIGHT_3C(GxEPD2_266c)> display(GxEPD2_266c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0266Z90 152x296, SSD1680
+//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029Z10 128x296, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_290_Z13c, MAX_HEIGHT_3C(GxEPD2_290_Z13c)> display(GxEPD2_290_Z13c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH029Z13 128x296, UC8151D
 //GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029C90 128x296, SSD1680
-//GxEPD2_3C<GxEPD2_266c, MAX_HEIGHT_3C(GxEPD2_266c)> display(GxEPD2_266c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0266Z90 152x296, SSD1680
-//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042Z15 400x300, UC8176 (IL0398)
 //GxEPD2_3C<GxEPD2_420c_Z21, MAX_HEIGHT_3C(GxEPD2_420c_Z21)> display(GxEPD2_420c_Z21(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEQ042Z21 400x300, UC8276
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583Z21 600x448, UC8179 (IL0371)
@@ -432,9 +477,12 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
+//GxEPD2_7C<GxEPD2_730c_GDEY073D46, MAX_HEIGHT_7C(GxEPD2_730c_GDEY073D46)> display(GxEPD2_730c_GDEY073D46(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
 
 // ***** for mapping of Waveshare Universal e-Paper Raw Panel Driver Shield for Arduino / NUCLEO *****
 // the RST line is not connected through level converter, but has a pull up resistor and a pull down diode to the Arduino pin; this is safe for 5V Arduino
@@ -448,14 +496,21 @@
 //GxEPD2_BW<GxEPD2_154_T8, MAX_HEIGHT(GxEPD2_154_T8)> display(GxEPD2_154_T8(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0154T8  152x152, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
+//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_270_GDEY027T91, MAX_HEIGHT(GxEPD2_270_GDEY027T91)> display(GxEPD2_270_GDEY027T91(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY027T91 176x264, SSD1680
 //GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH029A1 128x296, SSD1608 (IL3820)
 //GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW029T5 128x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_290_T5D, MAX_HEIGHT(GxEPD2_290_T5D)> display(GxEPD2_290_T5D(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW029T5D 128x296, UC8151D
@@ -464,17 +519,15 @@
 //GxEPD2_BW<GxEPD2_290_T94_V2, MAX_HEIGHT(GxEPD2_290_T94_V2)> display(GxEPD2_290_T94_V2(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
 //GxEPD2_BW<GxEPD2_290_BS, MAX_HEIGHT(GxEPD2_290_BS)> display(GxEPD2_290_BS(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0290BS 128x296, SSD1680
 //GxEPD2_BW<GxEPD2_290_M06, MAX_HEIGHT(GxEPD2_290_M06)> display(GxEPD2_290_M06(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW029M06  128x296, UC8151D
-//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
-//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW027W3 176x264, EK79652 (IL91874)
-//GxEPD2_BW<GxEPD2_270_T91, MAX_HEIGHT(GxEPD2_270_T91)> display(GxEPD2_270_T91(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY027T91 176x264, SSD1680
+//GxEPD2_BW<GxEPD2_290_GDEY029T94, MAX_HEIGHT(GxEPD2_290_GDEY029T94)> display(GxEPD2_290_GDEY029T94(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
 //GxEPD2_BW<GxEPD2_371, MAX_HEIGHT(GxEPD2_371)> display(GxEPD2_371(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0371W7 240x416, UC8171 (IL0324)
 //GxEPD2_BW<GxEPD2_370_TC1, MAX_HEIGHT(GxEPD2_370_TC1)> display(GxEPD2_370_TC1(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
 //GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW042T2 400x300, UC8176 (IL0398)
 //GxEPD2_BW<GxEPD2_420_M01, MAX_HEIGHT(GxEPD2_420_M01)> display(GxEPD2_420_M01(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW042M01 400x300, UC8176 (IL0398)
+//GxEPD2_BW<GxEPD2_420_GDEY042T91, MAX_HEIGHT(GxEPD2_420_GDEY042T91)> display(GxEPD2_420_GDEY042T91(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); GDEY042T91, 400x300, SSD1683 (no inking)
 //GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0583T7 600x448, UC8159c (IL0371)
-//GxEPD2_BW <GxEPD2_583_T8, MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW<GxEPD2_583_T8, MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW<GxEPD2_583_GDEQ0583T31, MAX_HEIGHT(GxEPD2_583_GDEQ0583T31)> display(GxEPD2_583_GDEQ0583T31(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
 //GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW075T8 640x384, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_750_T7, MAX_HEIGHT(GxEPD2_750_T7)> display(GxEPD2_750_T7(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW075T7 800x480, EK79655 (GD7965)
 //GxEPD2_BW<GxEPD2_750_YT7, MAX_HEIGHT(GxEPD2_750_YT7)> display(GxEPD2_750_YT7(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY075T7 800x480, UC8179 (GD7965)
@@ -485,11 +538,11 @@
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0213Z16 104x212, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_213_Z19c, MAX_HEIGHT_3C(GxEPD2_213_Z19c)> display(GxEPD2_213_Z19c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH0213Z19 104x212, UC8151D
 //GxEPD2_3C<GxEPD2_213_Z98c, MAX_HEIGHT_3C(GxEPD2_213_Z98c)> display(GxEPD2_213_Z98c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0213Z98 122x250, SSD1680
+//GxEPD2_3C<GxEPD2_266c, MAX_HEIGHT_3C(GxEPD2_266c)> display(GxEPD2_266c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0266Z90 152x296, SSD1680
+//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW029Z10 128x296, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_290_Z13c, MAX_HEIGHT_3C(GxEPD2_290_Z13c)> display(GxEPD2_290_Z13c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEH029Z13 128x296, UC8151D
 //GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEM029C90 128x296, SSD1680
-//GxEPD2_3C<GxEPD2_266c, MAX_HEIGHT_3C(GxEPD2_266c)> display(GxEPD2_266c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEY0266Z90 152x296, SSD1680
-//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW042Z15 400x300, UC8176 (IL0398)
 //GxEPD2_3C<GxEPD2_420c_Z21, MAX_HEIGHT_3C(GxEPD2_420c_Z21)> display(GxEPD2_420c_Z21(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEQ042Z21 400x300, UC8276
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0583Z21 600x448, UC8179 (IL0371)
@@ -497,6 +550,8 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); //GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
 

extras/tests/GxEPD2_RefreshTests/GxEPD2_display_selection_added.h

@@ -29,14 +29,21 @@
 //GxEPD2_BW<GxEPD2_154_T8, MAX_HEIGHT(GxEPD2_154_T8)> display(GxEPD2_154_T8(//*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154T8  152x152, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
+//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_270_GDEY027T91, MAX_HEIGHT(GxEPD2_270_GDEY027T91)> display(GxEPD2_270_GDEY027T91(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY027T91 176x264, SSD1680
 //GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH029A1 128x296, SSD1608 (IL3820)
 //GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029T5 128x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_290_T5D, MAX_HEIGHT(GxEPD2_290_T5D)> display(GxEPD2_290_T5D(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029T5D 128x296, UC8151D
@@ -45,17 +52,15 @@
 //GxEPD2_BW<GxEPD2_290_T94_V2, MAX_HEIGHT(GxEPD2_290_T94_V2)> display(GxEPD2_290_T94_V2(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
 //GxEPD2_BW<GxEPD2_290_BS, MAX_HEIGHT(GxEPD2_290_BS)> display(GxEPD2_290_BS(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0290BS 128x296, SSD1680
 //GxEPD2_BW<GxEPD2_290_M06, MAX_HEIGHT(GxEPD2_290_M06)> display(GxEPD2_290_M06(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029M06  128x296, UC8151D
-//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
-//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3 176x264, EK79652 (IL91874)
-//GxEPD2_BW<GxEPD2_270_T91, MAX_HEIGHT(GxEPD2_270_T91)> display(GxEPD2_270_T91(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY027T91 176x264, SSD1680
+//GxEPD2_BW<GxEPD2_290_GDEY029T94, MAX_HEIGHT(GxEPD2_290_GDEY029T94)> display(GxEPD2_290_GDEY029T94(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
 //GxEPD2_BW<GxEPD2_371, MAX_HEIGHT(GxEPD2_371)> display(GxEPD2_371(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0371W7 240x416, UC8171 (IL0324)
 //GxEPD2_BW<GxEPD2_370_TC1, MAX_HEIGHT(GxEPD2_370_TC1)> display(GxEPD2_370_TC1(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
 //GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042T2 400x300, UC8176 (IL0398)
 //GxEPD2_BW<GxEPD2_420_M01, MAX_HEIGHT(GxEPD2_420_M01)> display(GxEPD2_420_M01(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042M01 400x300, UC8176 (IL0398)
+//GxEPD2_BW<GxEPD2_420_GDEY042T91, MAX_HEIGHT(GxEPD2_420_GDEY042T91)> display(GxEPD2_420_GDEY042T91(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); GDEY042T91, 400x300, SSD1683 (no inking)
 //GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T7 600x448, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_583_T8, MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW<GxEPD2_583_GDEQ0583T31, MAX_HEIGHT(GxEPD2_583_GDEQ0583T31)> display(GxEPD2_583_GDEQ0583T31(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
 //GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075T8 640x384, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_750_T7, MAX_HEIGHT(GxEPD2_750_T7)> display(GxEPD2_750_T7(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075T7 800x480, EK79655 (GD7965)
 //GxEPD2_BW<GxEPD2_750_YT7, MAX_HEIGHT(GxEPD2_750_YT7)> display(GxEPD2_750_YT7(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY075T7 800x480, UC8179 (GD7965)
@@ -67,11 +72,11 @@
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213Z16 104x212, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_213_Z19c, MAX_HEIGHT_3C(GxEPD2_213_Z19c)> display(GxEPD2_213_Z19c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213Z19 104x212, UC8151D
 //GxEPD2_3C<GxEPD2_213_Z98c, MAX_HEIGHT_3C(GxEPD2_213_Z98c)> display(GxEPD2_213_Z98c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213Z98 122x250, SSD1680
+//GxEPD2_3C<GxEPD2_266c, MAX_HEIGHT_3C(GxEPD2_266c)> display(GxEPD2_266c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0266Z90 152x296, SSD1680
+//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029Z10 128x296, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_290_Z13c, MAX_HEIGHT_3C(GxEPD2_290_Z13c)> display(GxEPD2_290_Z13c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH029Z13 128x296, UC8151D
 //GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029C90 128x296, SSD1680
-//GxEPD2_3C<GxEPD2_266c, MAX_HEIGHT_3C(GxEPD2_266c)> display(GxEPD2_266c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0266Z90 152x296, SSD1680
-//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042Z15 400x300, UC8176 (IL0398)
 //GxEPD2_3C<GxEPD2_420c_Z21, MAX_HEIGHT_3C(GxEPD2_420c_Z21)> display(GxEPD2_420c_Z21(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEQ042Z21 400x300, UC8276
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583Z21 600x448, UC8179 (IL0371)
@@ -79,9 +84,12 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
+//GxEPD2_7C<GxEPD2_730c_GDEY073D46, MAX_HEIGHT_7C(GxEPD2_730c_GDEY073D46)> display(GxEPD2_730c_GDEY073D46(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
 // grey levels parallel IF e-papers on Waveshare e-Paper IT8951 Driver HAT
 // HRDY -> 7, RST -> 9, CS -> SS(77), SCK -> SCK(76), MOSI -> MOSI(75), MISO -> MISO(74), GND -> GND, 5V -> 5V
 // note: 5V supply needs to be exact and strong; 5V over diode from USB (e.g. Wemos D1 mini) doesn't work!
@@ -111,14 +119,21 @@
 //GxEPD2_BW<GxEPD2_154_T8, GxEPD2_154_T8::HEIGHT> display(GxEPD2_154_T8(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0154T8  152x152, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0154M10 152x152, UC8151D
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW026T0 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW026M01 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
+//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_270_GDEY027T91, MAX_HEIGHT(GxEPD2_270_GDEY027T91)> display(GxEPD2_270_GDEY027T91(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY027T91 176x264, SSD1680
 //GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH029A1 128x296, SSD1608 (IL3820)
 //GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW029T5 128x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_290_T5D, MAX_HEIGHT(GxEPD2_290_T5D)> display(GxEPD2_290_T5D(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW029T5D 128x296, UC8151D
@@ -127,17 +142,15 @@
 //GxEPD2_BW<GxEPD2_290_T94_V2, MAX_HEIGHT(GxEPD2_290_T94_V2)> display(GxEPD2_290_T94_V2(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
 //GxEPD2_BW<GxEPD2_290_BS, MAX_HEIGHT(GxEPD2_290_BS)> display(GxEPD2_290_BS(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0290BS 128x296, SSD1680
 //GxEPD2_BW<GxEPD2_290_M06, MAX_HEIGHT(GxEPD2_290_M06)> display(GxEPD2_290_M06(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW029M06  128x296, UC8151D
-//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW026T0 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW026M01 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
-//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW027W3 176x264, EK79652 (IL91874)
-//GxEPD2_BW<GxEPD2_270_T91, MAX_HEIGHT(GxEPD2_270_T91)> display(GxEPD2_270_T91(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY027T91 176x264, SSD1680
+//GxEPD2_BW<GxEPD2_290_GDEY029T94, MAX_HEIGHT(GxEPD2_290_GDEY029T94)> display(GxEPD2_290_GDEY029T94(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
 //GxEPD2_BW<GxEPD2_371, MAX_HEIGHT(GxEPD2_371)> display(GxEPD2_371(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0371W7 240x416, UC8171 (IL0324)
 //GxEPD2_BW<GxEPD2_370_TC1, MAX_HEIGHT(GxEPD2_370_TC1)> display(GxEPD2_370_TC1(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
 //GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW042T2 400x300, UC8176 (IL0398)
 //GxEPD2_BW<GxEPD2_420_M01, MAX_HEIGHT(GxEPD2_420_M01)> display(GxEPD2_420_M01(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW042M01 400x300, UC8176 (IL0398)
+//GxEPD2_BW<GxEPD2_420_GDEY042T91, MAX_HEIGHT(GxEPD2_420_GDEY042T91)> display(GxEPD2_420_GDEY042T91(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); GDEY042T91, 400x300, SSD1683 (no inking)
 //GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0583T7 600x448, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_583_T8, MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW<GxEPD2_583_GDEQ0583T31, MAX_HEIGHT(GxEPD2_583_GDEQ0583T31)> display(GxEPD2_583_GDEQ0583T31(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
 //GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW075T8 640x384, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_750_T7, MAX_HEIGHT(GxEPD2_750_T7)> display(GxEPD2_750_T7(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW075T7 800x480, EK79655 (GD7965)
 //GxEPD2_BW<GxEPD2_750_YT7, MAX_HEIGHT(GxEPD2_750_YT7)> display(GxEPD2_750_YT7(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY075T7 800x480, UC8179 (GD7965)
@@ -149,11 +162,11 @@
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0213Z16 104x212, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_213_Z19c, MAX_HEIGHT_3C(GxEPD2_213_Z19c)> display(GxEPD2_213_Z19c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0213Z19 104x212, UC8151D
 //GxEPD2_3C<GxEPD2_213_Z98c, MAX_HEIGHT_3C(GxEPD2_213_Z98c)> display(GxEPD2_213_Z98c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0213Z98 122x250, SSD1680
+//GxEPD2_3C<GxEPD2_266c, MAX_HEIGHT_3C(GxEPD2_266c)> display(GxEPD2_266c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0266Z90 152x296, SSD1680
+//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW029Z10 128x296, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_290_Z13c, MAX_HEIGHT_3C(GxEPD2_290_Z13c)> display(GxEPD2_290_Z13c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH029Z13 128x296, UC8151D
 //GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEM029C90 128x296, SSD1680
-//GxEPD2_3C<GxEPD2_266c, MAX_HEIGHT_3C(GxEPD2_266c)> display(GxEPD2_266c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY0266Z90 152x296, SSD1680
-//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW042Z15 400x300, UC8176 (IL0398)
 //GxEPD2_3C<GxEPD2_420c_Z21, MAX_HEIGHT_3C(GxEPD2_420c_Z21)> display(GxEPD2_420c_Z21(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEQ042Z21 400x300, UC8276
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW0583Z21 600x448, UC8179 (IL0371)
@@ -161,9 +174,12 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(//*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // Waveshare 5.65" 7-color
+//GxEPD2_7C<GxEPD2_730c_GDEY073D46, MAX_HEIGHT_7C(GxEPD2_730c_GDEY073D46)> display(GxEPD2_730c_GDEY073D46(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
 // grey levels parallel IF e-papers on Waveshare e-Paper IT8951 Driver HAT
 // HRDY -> 5, RST -> 6, CS -> 4, SCK -> SCK(9), MOSI -> MOSI(8), MISO -> MISO(10), GND -> GND, 5V -> 5V
 // note: 5V supply needs to be exact and strong; 5V over diode from USB (e.g. Wemos D1 mini) doesn't work!
@@ -189,14 +205,21 @@
 //GxEPD2_BW<GxEPD2_154_T8, GxEPD2_154_T8::HEIGHT> display(GxEPD2_154_T8(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0154T8  152x152, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0154M10 152x152, UC8151D
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW026T0 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW026M01 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
+//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_270_GDEY027T91, GxEPD2_270_GDEY027T91::HEIGHT> display(GxEPD2_270_GDEY027T91(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY027T91 176x264, SSD1680
 //GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH029A1 128x296, SSD1608 (IL3820)
 //GxEPD2_BW<GxEPD2_290_T5, GxEPD2_290_T5::HEIGHT> display(GxEPD2_290_T5(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW029T5 128x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_290_T5D, GxEPD2_290_T5D::HEIGHT> display(GxEPD2_290_T5D(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW029T5D 128x296, UC8151D
@@ -205,17 +228,15 @@
 //GxEPD2_BW<GxEPD2_290_T94_V2, GxEPD2_290_T94_V2::HEIGHT> display(GxEPD2_290_T94_V2(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
 //GxEPD2_BW<GxEPD2_290_BS, GxEPD2_290_BS::HEIGHT> display(GxEPD2_290_BS(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0290BS 128x296, SSD1680
 //GxEPD2_BW<GxEPD2_290_M06, GxEPD2_290_M06::HEIGHT> display(GxEPD2_290_M06(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW029M06  128x296, UC8151D
-//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW026T0 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW026M01 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
-//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW027W3 176x264, EK79652 (IL91874)
-//GxEPD2_BW<GxEPD2_270_T91, GxEPD2_270_T91::HEIGHT> display(GxEPD2_270_T91(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY027T91 176x264, SSD1680
+//GxEPD2_BW<GxEPD2_290_GDEY029T94, GxEPD2_290_GDEY029T94::HEIGHT> display(GxEPD2_290_GDEY029T94(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
 //GxEPD2_BW<GxEPD2_371, GxEPD2_371::HEIGHT> display(GxEPD2_371(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0371W7 240x416, UC8171 (IL0324)
 //GxEPD2_BW<GxEPD2_370_TC1, GxEPD2_370_TC1::HEIGHT> display(GxEPD2_370_TC1(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
 //GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW042T2 400x300, UC8176 (IL0398)
 //GxEPD2_BW<GxEPD2_420_M01, GxEPD2_420_M01::HEIGHT> display(GxEPD2_420_M01(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW042M01 400x300, UC8176 (IL0398)
+//GxEPD2_BW<GxEPD2_420_GDEY042T91, GxEPD2_420_GDEY042T91::HEIGHT> display(GxEPD2_420_GDEY042T91(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); GDEY042T91, 400x300, SSD1683 (no inking)
 //GxEPD2_BW<GxEPD2_583, GxEPD2_583::HEIGHT> display(GxEPD2_583(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0583T7 600x448, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_583_T8, GxEPD2_583_T8::HEIGHT> display(GxEPD2_583_T8(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW<GxEPD2_583_GDEQ0583T31, GxEPD2_583_GDEQ0583T31::HEIGHT> display(GxEPD2_583_GDEQ0583T31(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
 //GxEPD2_BW<GxEPD2_750, GxEPD2_750::HEIGHT> display(GxEPD2_750(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW075T8 640x384, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_750_T7, GxEPD2_750_T7::HEIGHT> display(GxEPD2_750_T7(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW075T7 800x480, EK79655 (GD7965)
 //GxEPD2_BW<GxEPD2_750_YT7, GxEPD2_750_YT7::HEIGHT> display(GxEPD2_750_YT7(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY075T7 800x480, UC8179 (GD7965)
@@ -226,11 +247,11 @@
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0213Z16 104x212, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_213_Z19c, GxEPD2_213_Z19c::HEIGHT> display(GxEPD2_213_Z19c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0213Z19 104x212, UC8151D
 //GxEPD2_3C<GxEPD2_213_Z98c, GxEPD2_213_Z98c::HEIGHT> display(GxEPD2_213_Z98c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0213Z98 122x250, SSD1680
+//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0266Z90 152x296, SSD1680
+//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW029Z10 128x296, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_290_Z13c, GxEPD2_290_Z13c::HEIGHT> display(GxEPD2_290_Z13c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH029Z13 128x296, UC8151D
 //GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEM029C90 128x296, SSD1680
-//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY0266Z90 152x296, SSD1680
-//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW042Z15 400x300, UC8176 (IL0398)
 //GxEPD2_3C<GxEPD2_420c_Z21, GxEPD2_420c_Z21::HEIGHT> display(GxEPD2_420c_Z21(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEQ042Z21 400x300, UC8276
 //GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW0583Z21 600x448, UC8179 (IL0371)
@@ -238,8 +259,11 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT> display(GxEPD2_750c_Z90(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // Waveshare 5.65" 7-color
+//GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 4 > display(GxEPD2_730c_GDEY073D46(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
 // grey levels parallel IF e-papers on Waveshare e-Paper IT8951 Driver HAT
 // HRDY -> 4, RST -> 16, CS -> 5, SCK -> SCK(18), MOSI -> MOSI(23), MISO -> MISO(19), GND -> GND, 5V -> 5V
 // note: 5V supply needs to be exact and strong; 5V over diode from USB (e.g. Wemos D1 mini) doesn't work!
@@ -261,14 +285,21 @@
 //GxEPD2_BW<GxEPD2_154_T8, GxEPD2_154_T8::HEIGHT> display(GxEPD2_154_T8(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0154T8  152x152, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0154M10 152x152, UC8151D
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
+//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_270_GDEY027T91, GxEPD2_270_GDEY027T91::HEIGHT> display(GxEPD2_270_GDEY027T91(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY027T91 176x264, SSD1680
 //GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH029A1 128x296, SSD1608 (IL3820)
 //GxEPD2_BW<GxEPD2_290_T5, GxEPD2_290_T5::HEIGHT> display(GxEPD2_290_T5(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW029T5 128x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_290_T5D, GxEPD2_290_T5D::HEIGHT> display(GxEPD2_290_T5D(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW029T5D 128x296, UC8151D
@@ -277,17 +308,15 @@
 //GxEPD2_BW<GxEPD2_290_T94_V2, GxEPD2_290_T94_V2::HEIGHT> display(GxEPD2_290_T94_V2(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
 //GxEPD2_BW<GxEPD2_290_BS, GxEPD2_290_BS::HEIGHT> display(GxEPD2_290_BS(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0290BS 128x296, SSD1680
 //GxEPD2_BW<GxEPD2_290_M06, GxEPD2_290_M06::HEIGHT> display(GxEPD2_290_M06(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW029M06  128x296, UC8151D
-//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW026T0 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW026M01 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
-//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW027W3 176x264, EK79652 (IL91874)
-//GxEPD2_BW<GxEPD2_270_T91, GxEPD2_270_T91::HEIGHT> display(GxEPD2_270_T91(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY027T91 176x264, SSD1680
+//GxEPD2_BW<GxEPD2_290_GDEY029T94, GxEPD2_290_GDEY029T94::HEIGHT> display(GxEPD2_290_GDEY029T94(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
 //GxEPD2_BW<GxEPD2_371, GxEPD2_371::HEIGHT> display(GxEPD2_371(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0371W7 240x416, UC8171 (IL0324)
 //GxEPD2_BW<GxEPD2_370_TC1, GxEPD2_370_TC1::HEIGHT> display(GxEPD2_370_TC1(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
 //GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW042T2 400x300, UC8176 (IL0398)
 //GxEPD2_BW<GxEPD2_420_M01, GxEPD2_420_M01::HEIGHT> display(GxEPD2_420_M01(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW042M01 400x300, UC8176 (IL0398)
+//GxEPD2_BW<GxEPD2_420_GDEY042T91, GxEPD2_420_GDEY042T91::HEIGHT> display(GxEPD2_420_GDEY042T91(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); GDEY042T91, 400x300, SSD1683 (no inking)
 //GxEPD2_BW<GxEPD2_583, GxEPD2_583::HEIGHT> display(GxEPD2_583(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0583T7 600x448, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_583_T8, GxEPD2_583_T8::HEIGHT> display(GxEPD2_583_T8(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW<GxEPD2_583_GDEQ0583T31, GxEPD2_583_GDEQ0583T31::HEIGHT> display(GxEPD2_583_GDEQ0583T31(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
 //GxEPD2_BW<GxEPD2_750, GxEPD2_750::HEIGHT> display(GxEPD2_750(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW075T8 640x384, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_750_T7, GxEPD2_750_T7::HEIGHT> display(GxEPD2_750_T7(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW075T7 800x480, EK79655 (GD7965)
 //GxEPD2_BW<GxEPD2_750_YT7, GxEPD2_750_YT7::HEIGHT> display(GxEPD2_750_YT7(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY075T7 800x480, UC8179 (GD7965)
@@ -298,11 +327,11 @@
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0213Z16 104x212, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_213_Z19c, GxEPD2_213_Z19c::HEIGHT> display(GxEPD2_213_Z19c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0213Z19 104x212, UC8151D
 //GxEPD2_3C<GxEPD2_213_Z98c, GxEPD2_213_Z98c::HEIGHT> display(GxEPD2_213_Z98c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0213Z98 122x250, SSD1680
+//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0266Z90 152x296, SSD1680
+//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW029Z10 128x296, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_290_Z13c, GxEPD2_290_Z13c::HEIGHT> display(GxEPD2_290_Z13c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH029Z13 128x296, UC8151D
 //GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEM029C90 128x296, SSD1680
-//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY0266Z90 152x296, SSD1680
-//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW042Z15 400x300, UC8176 (IL0398)
 //GxEPD2_3C<GxEPD2_420c_Z21, GxEPD2_420c_Z21::HEIGHT> display(GxEPD2_420c_Z21(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEQ042Z21 400x300, UC8276
 //GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW0583Z21 600x448, UC8179 (IL0371)
@@ -310,8 +339,11 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT> display(GxEPD2_750c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT> display(GxEPD2_750c_Z08(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT> display(GxEPD2_750c_Z90(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 2 > display(GxEPD2_565c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // Waveshare 5.65" 7-color
+//GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 4 > display(GxEPD2_730c_GDEY073D46(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
 // grey levels parallel IF e-papers on Waveshare e-Paper IT8951 Driver HAT
 // HRDY -> 4, RST -> 16, CS -> SS(5), SCK -> SCK(18), MOSI -> MOSI(23), MISO -> MISO(19), GND -> GND, 5V -> 5V
 // note: 5V supply needs to be exact and strong; 5V over diode from USB (e.g. Wemos D1 mini) doesn't work!
@@ -333,14 +365,21 @@
 //GxEPD2_BW<GxEPD2_154_T8, GxEPD2_154_T8::HEIGHT> display(GxEPD2_154_T8(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0154T8  152x152, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_154_M09, GxEPD2_154_M09::HEIGHT> display(GxEPD2_154_M09(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, GxEPD2_154_M10::HEIGHT> display(GxEPD2_154_M10(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0154M10 152x152, UC8151D
-//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_154_GDEY0154D67, GxEPD2_154_GDEY0154D67::HEIGHT> display(GxEPD2_154_GDEY0154D67(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//GxEPD2_BW<GxEPD2_213, GxEPD2_213::HEIGHT> display(GxEPD2_213(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, GxEPD2_213_B72::HEIGHT> display(GxEPD2_213_B72(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, GxEPD2_213_B73::HEIGHT> display(GxEPD2_213_B73(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, GxEPD2_213_B74::HEIGHT> display(GxEPD2_213_B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, GxEPD2_213_flex::HEIGHT> display(GxEPD2_213_flex(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, GxEPD2_213_M21::HEIGHT> display(GxEPD2_213_M21(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, GxEPD2_213_T5D::HEIGHT> display(GxEPD2_213_T5D(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_BN, GxEPD2_213_BN::HEIGHT> display(GxEPD2_213_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, GxEPD2_213_GDEY0213B74::HEIGHT> display(GxEPD2_213_GDEY0213B74(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW026T0 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW026M01 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
+//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_270_GDEY027T91, GxEPD2_270_GDEY027T91::HEIGHT> display(GxEPD2_270_GDEY027T91(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY027T91 176x264, SSD1680
 //GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH029A1 128x296, SSD1608 (IL3820)
 //GxEPD2_BW<GxEPD2_290_T5, GxEPD2_290_T5::HEIGHT> display(GxEPD2_290_T5(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW029T5 128x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_290_T5D, GxEPD2_290_T5D::HEIGHT> display(GxEPD2_290_T5D(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW029T5D 128x296, UC8151D
@@ -349,18 +388,16 @@
 //GxEPD2_BW<GxEPD2_290_T94_V2, GxEPD2_290_T94_V2::HEIGHT> display(GxEPD2_290_T94_V2(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
 //GxEPD2_BW<GxEPD2_290_BS, GxEPD2_290_BS::HEIGHT> display(GxEPD2_290_BS(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0290BS 128x296, SSD1680
 //GxEPD2_BW<GxEPD2_290_M06, GxEPD2_290_M06::HEIGHT> display(GxEPD2_290_M06(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW029M06  128x296, UC8151D
-//GxEPD2_BW<GxEPD2_260, GxEPD2_260::HEIGHT> display(GxEPD2_260(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW026T0 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_260_M01, GxEPD2_260_M01::HEIGHT> display(GxEPD2_260_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW026M01 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_266_BN, GxEPD2_266_BN::HEIGHT> display(GxEPD2_266_BN(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
-//GxEPD2_BW<GxEPD2_270, GxEPD2_270::HEIGHT> display(GxEPD2_270(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW027W3 176x264, EK79652 (IL91874)
-//GxEPD2_BW<GxEPD2_270_T91, GxEPD2_270_T91::HEIGHT> display(GxEPD2_270_T91(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY027T91 176x264, SSD1680
+//GxEPD2_BW<GxEPD2_290_GDEY029T94, GxEPD2_290_GDEY029T94::HEIGHT> display(GxEPD2_290_GDEY029T94(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
 //GxEPD2_BW<GxEPD2_371, GxEPD2_371::HEIGHT> display(GxEPD2_371(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0371W7 240x416, UC8171 (IL0324)
 //GxEPD2_BW<GxEPD2_370_TC1, GxEPD2_370_TC1::HEIGHT> display(GxEPD2_370_TC1(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
 //GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW042T2 400x300, UC8176 (IL0398)
 //GxEPD2_BW<GxEPD2_420_M01, GxEPD2_420_M01::HEIGHT> display(GxEPD2_420_M01(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW042M01 400x300, UC8176 (IL0398)
+//GxEPD2_BW<GxEPD2_420_GDEY042T91, GxEPD2_420_GDEY042T91::HEIGHT> display(GxEPD2_420_GDEY042T91(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); GDEY042T91, 400x300, SSD1683 (no inking)
 // can use only half buffer size
 //GxEPD2_BW < GxEPD2_583, GxEPD2_583::HEIGHT / 2 > display(GxEPD2_583(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); GDEW0583T7 600x448, UC8159c (IL0371)
 //GxEPD2_BW < GxEPD2_583_T8, GxEPD2_583_T8::HEIGHT / 2 > display(GxEPD2_583_T8(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW < GxEPD2_583_GDEQ0583T31, GxEPD2_583_GDEQ0583T31::HEIGHT / 2 > display(GxEPD2_583_GDEQ0583T31(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
 //GxEPD2_BW < GxEPD2_750, GxEPD2_750::HEIGHT / 2 > display(GxEPD2_750(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW075T7 800x480, EK79655 (GD7965)
 //GxEPD2_BW < GxEPD2_750_T7, GxEPD2_750_T7::HEIGHT / 2 > display(GxEPD2_750_T7(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW075T7 800x480, EK79655 (GD7965)
 //GxEPD2_BW < GxEPD2_750_YT7, GxEPD2_750_YT7::HEIGHT / 2 > display(GxEPD2_750_YT7(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY075T7 800x480, UC8179 (GD7965)
@@ -371,11 +408,11 @@
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW0213Z16 104x212, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_213_Z19c, GxEPD2_213_Z19c::HEIGHT> display(GxEPD2_213_Z19c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0213Z19 104x212, UC8151D
 //GxEPD2_3C<GxEPD2_213_Z98c, GxEPD2_213_Z98c::HEIGHT> display(GxEPD2_213_Z98c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0213Z98 122x250, SSD1680
+//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0266Z90 152x296, SSD1680
+//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW029Z10 128x296, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_290_Z13c, GxEPD2_290_Z13c::HEIGHT> display(GxEPD2_290_Z13c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH029Z13 128x296, UC8151D
 //GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEM029C90 128x296, SSD1680
-//GxEPD2_3C<GxEPD2_266c, GxEPD2_266c::HEIGHT> display(GxEPD2_266c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY0266Z90 152x296, SSD1680
-//GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW027C44 176x264, IL91874
 // can use only half buffer size
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT / 2> display(GxEPD2_420c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW042Z15 400x300, UC8176 (IL0398)
 //GxEPD2_3C<GxEPD2_420c_Z21, GxEPD2_420c_Z21::HEIGHT / 2> display(GxEPD2_420c_Z21(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEQ042Z21 400x300, UC8276
@@ -385,8 +422,11 @@
 //GxEPD2_3C<GxEPD2_750c, GxEPD2_750c::HEIGHT / 4> display(GxEPD2_750c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 4> display(GxEPD2_750c_Z08(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, GxEPD2_750c_Z90::HEIGHT / 4> display(GxEPD2_750c_Z90(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C < GxEPD2_437c, GxEPD2_437c::HEIGHT / 4 > display(GxEPD2_437c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 //GxEPD2_7C < GxEPD2_565c, GxEPD2_565c::HEIGHT / 4 > display(GxEPD2_565c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // Waveshare 5.65" 7-color
+//GxEPD2_7C < GxEPD2_730c_GDEY073D46, GxEPD2_730c_GDEY073D46::HEIGHT / 6 > display(GxEPD2_730c_GDEY073D46(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
 #endif
 
 #if defined(ARDUINO_ARCH_RP2040)
@@ -400,14 +440,21 @@
 //GxEPD2_BW<GxEPD2_154_T8, MAX_HEIGHT(GxEPD2_154_T8)> display(GxEPD2_154_T8(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154T8  152x152, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200, JD79653A
 //GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152, UC8151D
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 128x250, IL3895, phased out
-//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 128x250, SSD1675A (IL3897)
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 128x250, SSD1675B
-//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 128x250, SSD1680
+//GxEPD2_BW<GxEPD2_154_GDEY0154D67, MAX_HEIGHT(GxEPD2_154_GDEY0154D67)> display(GxEPD2_154_GDEY0154D67(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1 122x250, IL3895, phased out
+//GxEPD2_BW<GxEPD2_213_B72, MAX_HEIGHT(GxEPD2_213_B72)> display(GxEPD2_213_B72(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B72 122x250, SSD1675A (IL3897)
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73 122x250, SSD1675B
+//GxEPD2_BW<GxEPD2_213_B74, MAX_HEIGHT(GxEPD2_213_B74)> display(GxEPD2_213_B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM0213B74 122x250, SSD1680
 //GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21 104x212, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_213_T5D, MAX_HEIGHT(GxEPD2_213_T5D)> display(GxEPD2_213_T5D(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213T5D 104x212, UC8151D
-//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_BN, MAX_HEIGHT(GxEPD2_213_BN)> display(GxEPD2_213_BN(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0213BN 122x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
+//GxEPD2_BW<GxEPD2_213_GDEY0213B74, MAX_HEIGHT(GxEPD2_213_GDEY0213B74)> display(GxEPD2_213_GDEY0213B74(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
+//GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
+//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_270_GDEY027T91, MAX_HEIGHT(GxEPD2_270_GDEY027T91)> display(GxEPD2_270_GDEY027T91(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3 176x264, EK79652 (IL91874)
 //GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH029A1 128x296, SSD1608 (IL3820)
 //GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029T5 128x296, UC8151 (IL0373)
 //GxEPD2_BW<GxEPD2_290_T5D, MAX_HEIGHT(GxEPD2_290_T5D)> display(GxEPD2_290_T5D(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029T5D 128x296, UC8151D
@@ -416,17 +463,15 @@
 //GxEPD2_BW<GxEPD2_290_T94_V2, MAX_HEIGHT(GxEPD2_290_T94_V2)> display(GxEPD2_290_T94_V2(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029T94 128x296, SSD1680, Waveshare 2.9" V2 variant
 //GxEPD2_BW<GxEPD2_290_BS, MAX_HEIGHT(GxEPD2_290_BS)> display(GxEPD2_290_BS(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // DEPG0290BS 128x296, SSD1680
 //GxEPD2_BW<GxEPD2_290_M06, MAX_HEIGHT(GxEPD2_290_M06)> display(GxEPD2_290_M06(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029M06  128x296, UC8151D
-//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01 152x296, UC8151 (IL0373)
-//GxEPD2_BW<GxEPD2_266_BN, MAX_HEIGHT(GxEPD2_266_BN)> display(GxEPD2_266_BN(/*CS=PA4*/ SS, /*DC=*/ PA3, /*RST=*/ PA2, /*BUSY=*/ PA1)); // DEPG0266BN 152x296, SSD1680, TTGO T5 V2.66 / T92_V1.0
-//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3 176x264, EK79652 (IL91874)
-//GxEPD2_BW<GxEPD2_270_T91, MAX_HEIGHT(GxEPD2_270_T91)> display(GxEPD2_270_T91(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3 176x264, EK79652 (IL91874)
+//GxEPD2_BW<GxEPD2_290_GDEY029T94, MAX_HEIGHT(GxEPD2_290_GDEY029T94)> display(GxEPD2_290_GDEY029T94(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY029T94  128x296, SSD1680, (FPC-A005 20.06.15)
 //GxEPD2_BW<GxEPD2_371, MAX_HEIGHT(GxEPD2_371)> display(GxEPD2_371(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0371W7 240x416, UC8171 (IL0324)
 //GxEPD2_BW<GxEPD2_370_TC1, MAX_HEIGHT(GxEPD2_370_TC1)> display(GxEPD2_370_TC1(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // ED037TC1 280x480, SSD1677, Waveshare 3.7"
 //GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042T2 400x300, UC8176 (IL0398)
 //GxEPD2_BW<GxEPD2_420_M01, MAX_HEIGHT(GxEPD2_420_M01)> display(GxEPD2_420_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042M01 400x300, UC8176 (IL0398)
+//GxEPD2_BW<GxEPD2_420_GDEY042T91, MAX_HEIGHT(GxEPD2_420_GDEY042T91)> display(GxEPD2_420_GDEY042T91(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); GDEY042T91, 400x300, SSD1683 (no inking)
 //GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T7 600x448, UC8159c (IL0371)
-//GxEPD2_BW <GxEPD2_583_T8,  MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW<GxEPD2_583_T8, MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T8 648x480, EK79655 (GD7965)
+//GxEPD2_BW<GxEPD2_583_GDEQ0583T31, MAX_HEIGHT(GxEPD2_583_GDEQ0583T31)> display(GxEPD2_583_GDEQ0583T31(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEQ0583T31 648x480, UC8179, (P583010-MF1-B)
 //GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075T8 640x384, UC8159c (IL0371)
 //GxEPD2_BW<GxEPD2_750_T7, MAX_HEIGHT(GxEPD2_750_T7)> display(GxEPD2_750_T7(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY075T7 800x480, UC8179 (GD7965)
 //GxEPD2_BW<GxEPD2_750_YT7, MAX_HEIGHT(GxEPD2_750_YT7)> display(GxEPD2_750_YT7(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY075T7 800x480, UC8179 (GD7965)
@@ -438,11 +483,11 @@
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213Z16 104x212, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_213_Z19c, MAX_HEIGHT_3C(GxEPD2_213_Z19c)> display(GxEPD2_213_Z19c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213Z19 104x212, UC8151D
 //GxEPD2_3C<GxEPD2_213_Z98c, MAX_HEIGHT_3C(GxEPD2_213_Z98c)> display(GxEPD2_213_Z98c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0213Z98 122x250, SSD1680
+//GxEPD2_3C<GxEPD2_266c, MAX_HEIGHT_3C(GxEPD2_266c)> display(GxEPD2_266c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0266Z90 152x296, SSD1680
+//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029Z10 128x296, UC8151 (IL0373)
 //GxEPD2_3C<GxEPD2_290_Z13c, MAX_HEIGHT_3C(GxEPD2_290_Z13c)> display(GxEPD2_290_Z13c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH029Z13 128x296, UC8151D
 //GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029C90 128x296, SSD1680
-//GxEPD2_3C<GxEPD2_266c, MAX_HEIGHT_3C(GxEPD2_266c)> display(GxEPD2_266c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY0266Z90 152x296, SSD1680
-//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027C44 176x264, IL91874
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042Z15 400x300, UC8176 (IL0398)
 //GxEPD2_3C<GxEPD2_420c_Z21, MAX_HEIGHT_3C(GxEPD2_420c_Z21)> display(GxEPD2_420c_Z21(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEQ042Z21 400x300, UC8276
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583Z21 600x448, UC8179 (IL0371)
@@ -450,9 +495,12 @@
 //GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09 640x384, UC8179 (IL0371)
 //GxEPD2_3C<GxEPD2_750c_Z08, MAX_HEIGHT_3C(GxEPD2_750c_Z08)> display(GxEPD2_750c_Z08(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z08 800x480, GD7965
 //GxEPD2_3C<GxEPD2_750c_Z90, MAX_HEIGHT_3C(GxEPD2_750c_Z90)> display(GxEPD2_750c_Z90(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH075Z90 880x528, SSD1677
+// 4-color e-paper
+//GxEPD2_4C <GxEPD2_437c, MAX_HEIGHT_3C(GxEPD2_437c)> display(GxEPD2_437c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 4.37" 4-color
 // 7-color e-paper
 #define MAX_HEIGHT_7C(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2)) // 2 pixel per byte
 //GxEPD2_7C<GxEPD2_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
+//GxEPD2_7C<GxEPD2_730c_GDEY073D46, MAX_HEIGHT_7C(GxEPD2_730c_GDEY073D46)> display(GxEPD2_730c_GDEY073D46(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
 #undef MAX_DISPLAY_BUFFER_SIZE
 #undef MAX_HEIGHT
 #undef MAX_HEIGHT_3C

extras/tests/GxEPD2_RefreshTests/GxEPD2_display_selection_new_style.h

@@ -18,69 +18,79 @@
 // select the display class (only one), matching the kind of display panel
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_3C
+//#define GxEPD2_DISPLAY_CLASS GxEPD2_4C
 //#define GxEPD2_DISPLAY_CLASS GxEPD2_7C
 
 // select the display driver class (only one) for your  panel
-//#define GxEPD2_DRIVER_CLASS GxEPD2_102     // GDEW0102T4   80x128, UC8175
-//#define GxEPD2_DRIVER_CLASS GxEPD2_150_BN  // DEPG0150BN 200x200, SSD1681, TTGO T5 V2.4.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_154     // GDEP015OC1  200x200, IL3829, no longer available
-//#define GxEPD2_DRIVER_CLASS GxEPD2_154_D67 // GDEH0154D67 200x200, SSD1681
-//#define GxEPD2_DRIVER_CLASS GxEPD2_154_T8  // GDEW0154T8  152x152, UC8151 (IL0373)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A
-//#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   128x250, IL3895, phased out
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 128x250, SSD1675A (IL3897)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 128x250, SSD1675B
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 128x250, SSD1680
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  128x250, SSD1680, TTGO T5 V2.4.1, V2.3.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_290     // GDEH029A1   128x296, SSD1608 (IL3820)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_290_T5  // GDEW029T5   128x296, UC8151 (IL0373)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_290_T5D // GDEW029T5D  128x296, UC8151D
-//#define GxEPD2_DRIVER_CLASS GxEPD2_290_I6FD // GDEW029I6FD  128x296, UC8151D
-//#define GxEPD2_DRIVER_CLASS GxEPD2_290_T94 // GDEM029T94  128x296, SSD1680
-//#define GxEPD2_DRIVER_CLASS GxEPD2_290_T94_V2 // GDEM029T94  128x296, SSD1680, Waveshare 2.9" V2 variant
-//#define GxEPD2_DRIVER_CLASS GxEPD2_290_BS // DEPG0290BS  128x296, SSD1680
-//#define GxEPD2_DRIVER_CLASS GxEPD2_290_M06 // GDEW029M06  128x296, UC8151D
-//#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_266_BN // DEPG0266BN  152x296, SSD1680, TTGO T5 V2.66, TTGO T5 V2.4.1
-//#define GxEPD2_DRIVER_CLASS GxEPD2_270     // GDEW027W3   176x264, EK79652 (IL91874)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_270_T91 // GDEY027T91   176x264, SSD1680
-//#define GxEPD2_DRIVER_CLASS GxEPD2_371     // GDEW0371W7  240x416, UC8171 (IL0324)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_370_TC1 // ED037TC1  280x480, SSD1677, Waveshare 3.7"
-//#define GxEPD2_DRIVER_CLASS GxEPD2_420     // GDEW042T2   400x300, UC8176 (IL0398)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_420_M01 // GDEW042M01  400x300, UC8176 (IL0398)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_583     // GDEW0583T7  600x448, UC8159c (IL0371)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_583_T8  // GDEW0583T8  648x480, EK79655 (GD7965)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750     // GDEW075T8   640x384, UC8159c (IL0371)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750_T7  // GDEW075T7   800x480, EK79655 (GD7965)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750_YT7  // GDEY075T7   800x480, UC8179 (GD7965)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_1160_T91 // GDEH116T91 960x640, SSD1677
-//#define GxEPD2_DRIVER_CLASS GxEPD2_1248     // GDEW1248T3  1304x984, UC8179
+//#define GxEPD2_DRIVER_CLASS GxEPD2_102     // GDEW0102T4   80x128, UC8175, (WFT0102CZA2)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_150_BN  // DEPG0150BN 200x200, SSD1681, (FPC8101), TTGO T5 V2.4.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_154     // GDEP015OC1  200x200, IL3829, (WFC0000CZ07), no longer available
+//#define GxEPD2_DRIVER_CLASS GxEPD2_154_D67 // GDEH0154D67 200x200, SSD1681, (HINK-E154A07-A1)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_154_T8  // GDEW0154T8  152x152, UC8151 (IL0373), (WFT0154CZ17)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_154_M09 // GDEW0154M09 200x200, JD79653A, (WFT0154CZB3)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_154_M10 // GDEW0154M10 152x152, UC8151D, (WFT0154CZ17)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_154_GDEY0154D67 // GDEY0154D67 200x200, SSD1681, (FPC-B001 20.05.21)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213     // GDE0213B1   122x250, IL3895, (HINK-E0213-G01), phased out
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B72 // GDEH0213B72 122x250, SSD1675A (IL3897), (HINK-E0213A22-A0 SLH1852)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B73 // GDEH0213B73 122x250, SSD1675B, (HINK-E0213A22-A0 SLH1914)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_B74 // GDEM0213B74 122x250, SSD1680, FPC-7528B)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_flex // GDEW0213I5F 104x212, UC8151 (IL0373), (WFT0213CZ16)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_M21 // GDEW0213M21 104x212, UC8151 (IL0373), (WFT0213CZ16)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_T5D // GDEW0213T5D 104x212, UC8151D, (WFT0213CZ16)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN // DEPG0213BN  122x250, SSD1680, (FPC-7528B), TTGO T5 V2.4.1, V2.3.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_GDEY0213B74 // GDEY0213B74 122x250, SSD1680, (FPC-A002 20.04.08)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_260     // GDEW026T0   152x296, UC8151 (IL0373), (WFT0154CZ17)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_260_M01 // GDEW026M01  152x296, UC8151 (IL0373), (WFT0260CZB2)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_266_BN // DEPG0266BN   152x296, SSD1680, (FPC7510), TTGO T5 V2.66, TTGO T5 V2.4.1
+//#define GxEPD2_DRIVER_CLASS GxEPD2_266_GDEY0266T90 // GDEY0266T90 152x296, SSD1680, (FPC-A003 HB)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_270     // GDEW027W3   176x264, EK79652 (IL91874), (WFI0190CZ22)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_270_GDEY027T91 // GDEY027T91 176x264, SSD1680, (FB)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290     // GDEH029A1   128x296, SSD1608 (IL3820), (E029A01-FPC-A1 SYX1553)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_T5  // GDEW029T5   128x296, UC8151 (IL0373), (WFT0290CZ10)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_T5D // GDEW029T5D  128x296, UC8151D, (WFT0290CZ10)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_I6FD // GDEW029I6FD  128x296, UC8151D, (WFT0290CZ10)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_T94 // GDEM029T94  128x296, SSD1680, (FPC-7519 rev.b)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_T94_V2 // GDEM029T94  128x296, SSD1680, (FPC-7519 rev.b), Waveshare 2.9" V2 variant
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_BS // DEPG0290BS  128x296, SSD1680, (FPC-7519 rev.b)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_M06 // GDEW029M06  128x296, UC8151D, (WFT0290CZ10)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_GDEY029T94 // GDEY029T94 128x296, SSD1680, (FPC-A005 20.06.15)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_371     // GDEW0371W7  240x416, UC8171 (IL0324), (missing)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_370_TC1 // ED037TC1  280x480, SSD1677, (ICA-FU-20 ichia 2029), Waveshare 3.7"
+//#define GxEPD2_DRIVER_CLASS GxEPD2_420     // GDEW042T2   400x300, UC8176 (IL0398), (WFT042CZ15)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_420_M01 // GDEW042M01  400x300, UC8176 (IL0398), (WFT042CZ15)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_420_GDEY042T91 // GDEY042T91 400x300, SSD1683 (no inking)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_583     // GDEW0583T7  600x448, UC8159c (IL0371), (missing)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_583_T8  // GDEW0583T8  648x480, EK79655 (GD7965), (WFT0583CZ61)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_583_GDEQ0583T31 // GDEQ0583T31  648x480, UC8179, (P583010-MF1-B)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750     // GDEW075T8   640x384, UC8159c (IL0371), (WF0583CZ09)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750_T7  // GDEW075T7   800x480, EK79655 (GD7965), (WFT0583CZ61)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750_YT7  // GDEY075T7  800x480, UC8179 (GD7965), (FPC-C001 20.8.20)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_1160_T91 // GDEH116T91 960x640, SSD1677, (none or hidden)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_1248     // GDEW1248T3 1304x984, UC8179, (WFT1248BZ23,WFT1248BZ24)
 // 3-color e-papers
-//#define GxEPD2_DRIVER_CLASS GxEPD2_154c     // GDEW0154Z04 200x200, IL0376F, no longer available
-//#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200, SSD1681
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212, UC8151 (IL0373)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_Z19c // GDEH0213Z19 104x212, UC8151D
-//#define GxEPD2_DRIVER_CLASS GxEPD2_213_Z98c // GDEY0213Z98 122x250, SSD1680
-//#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296, UC8151 (IL0373)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_290_Z13c // GDEH029Z13  128x296, UC8151D
-//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296, SSD1680
-//#define GxEPD2_DRIVER_CLASS GxEPD2_266c     // GDEY0266Z90 152x296, SSD1680
-//#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264, IL91874
-//#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300, UC8176 (IL0398)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_420c_Z21 // GDEQ042Z21  400x300, UC8276
-//#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448, UC8159c (IL0371)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_583c_Z83 // GDEW0583Z83 648x480, EK79655 (GD7965)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  640x384, UC8159c (IL0371)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, EK79655 (GD7965)
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677
-//#define GxEPD2_DRIVER_CLASS GxEPD2_1248c    // GDEY1248Z51 1304x984, UC8179
+//#define GxEPD2_DRIVER_CLASS GxEPD2_154c     // GDEW0154Z04 200x200, IL0376F, (WFT0000CZ04), no longer available
+//#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200, SSD1681, (HINK-E154A07-A1)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212, UC8151 (IL0373), (WFT0213CZ16)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_Z19c // GDEH0213Z19 104x212, UC8151D, (HINK-E0213A20-A2 2020-11-19)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_213_Z98c // GDEY0213Z98 122x250, SSD1680, (FPC-A002 20.04.08)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_266c     // GDEY0266Z90 152x296, SSD1680, (FPC-7510)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264, IL91874, (WFI0190CZ22)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296, UC8151 (IL0373), (WFT0290CZ10)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_Z13c // GDEH029Z13  128x296, UC8151D, (HINK-E029A10-A3 20160809)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296, SSD1680, (FPC-7519 rev.b)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300, UC8176 (IL0398), (WFT0420CZ15)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_420c_Z21 // GDEQ042Z21  400x300, UC8276, (hidden)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448, UC8159c (IL0371), (missing)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_583c_Z83 // GDEW0583Z83 648x480, EK79655 (GD7965), (WFT0583CZ61)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  640x384, UC8159c (IL0371), (WF0583CZ09)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480, EK79655 (GD7965), (WFT0583CZ61)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528, SSD1677, (HINK-E075A07-A0)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_1248c    // GDEY1248Z51 1304x984, UC8179, (WFT1248BZ23,WFT1248BZ24)
+// 4-color e-paper
+//#define GxEPD2_DRIVER_CLASS GxEPD2_437c     // Waveshare 4.37" 4-color
 // 7-color e-paper
-//#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color (3C graphics)
+//#define GxEPD2_DRIVER_CLASS GxEPD2_565c // Waveshare 5.65" 7-color
+//#define GxEPD2_DRIVER_CLASS GxEPD2_730c_GDEY073D46 // GDEY073D46 800x480 7-color, (N-FPC-001 2021.11.26)
 // grey levels parallel IF e-papers on Waveshare e-Paper IT8951 Driver HAT
 //#define GxEPD2_DRIVER_CLASS GxEPD2_it60           // ED060SCT 800x600
 //#define GxEPD2_DRIVER_CLASS GxEPD2_it60_1448x1072 // ED060KC1 1448x1072
@@ -97,12 +107,14 @@
 // somehow there should be an easier way to do this
 #define GxEPD2_BW_IS_GxEPD2_BW true
 #define GxEPD2_3C_IS_GxEPD2_3C true
+#define GxEPD2_4C_IS_GxEPD2_4C true
 #define GxEPD2_7C_IS_GxEPD2_7C true
 #define GxEPD2_1248_IS_GxEPD2_1248 true
 #define GxEPD2_1248c_IS_GxEPD2_1248c true
 #define IS_GxEPD(c, x) (c##x)
 #define IS_GxEPD2_BW(x) IS_GxEPD(GxEPD2_BW_IS_, x)
 #define IS_GxEPD2_3C(x) IS_GxEPD(GxEPD2_3C_IS_, x)
+#define IS_GxEPD2_4C(x) IS_GxEPD(GxEPD2_4C_IS_, x)
 #define IS_GxEPD2_7C(x) IS_GxEPD(GxEPD2_7C_IS_, x)
 #define IS_GxEPD2_1248(x) IS_GxEPD(GxEPD2_1248_IS_, x)
 #define IS_GxEPD2_1248c(x) IS_GxEPD(GxEPD2_1248c_IS_, x)
@@ -113,7 +125,7 @@
 #define MAX_DISPLAY_BUFFER_SIZE (81920ul-34000ul-5000ul) // ~34000 base use, change 5000 to your application use
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -132,7 +144,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 65536ul // e.g.
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -142,11 +154,11 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #if defined(ARDUINO_LOLIN_D32_PRO)
 GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=5*/ EPD_CS, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // my LOLIN_D32_PRO proto board
 #else
-//GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=5*/ EPD_CS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // my suggested wiring and proto board
+GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=5*/ EPD_CS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // my suggested wiring and proto board
 //GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=5*/ 5, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // LILYGO_T5_V2.4.1
 //GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=5*/ EPD_CS, /*DC=*/ 19, /*RST=*/ 4, /*BUSY=*/ 34)); // LILYGO® TTGO T5 2.66
 //GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=5*/ EPD_CS, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // e.g. TTGO T8 ESP32-WROVER
-GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare ESP32 Driver Board
+//GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25)); // Waveshare ESP32 Driver Board
 #endif
 #else // GxEPD2_1248 or GxEPD2_1248c
 // Waveshare 12.48 b/w or b/w/r SPI display board and frame or Good Display 12.48 b/w panel GDEW1248T3 or b/w/r panel GDEY1248Z51
@@ -165,7 +177,7 @@ GxEPD2_DISPLAY_CLASS < GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS) > di
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -184,13 +196,15 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
 #endif
 // adapt the constructor parameters to your wiring
 GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+// for Arduino Micro or Arduino Leonardo with CS on 10 on my proto boards (SS would be 17) uncomment instead:
+//GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ 10, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 #endif
 
 #if defined(ARDUINO_ARCH_SAM)
@@ -212,7 +226,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 15000ul // ~15k is a good compromise
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))
@@ -229,7 +243,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #define MAX_DISPLAY_BUFFER_SIZE 131072ul // e.g. half of available ram
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
-#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS)
+#elif IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) || IS_GxEPD2_4C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE / 2) / (EPD::WIDTH / 8))
 #elif IS_GxEPD2_7C(GxEPD2_DISPLAY_CLASS)
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2) ? EPD::HEIGHT : (MAX_DISPLAY_BUFFER_SIZE) / (EPD::WIDTH / 2))

extras/tests/GxEPD2_RefreshTests/GxEPD2_selection_check.h

@@ -20,6 +20,7 @@
 #define GxEPD2_154_T8_IS_BW true
 #define GxEPD2_154_M09_IS_BW true
 #define GxEPD2_154_M10_IS_BW true
+#define GxEPD2_154_GDEY0154D67_IS_BW true
 #define GxEPD2_213_IS_BW true
 #define GxEPD2_213_B72_IS_BW true
 #define GxEPD2_213_B73_IS_BW true
@@ -28,6 +29,13 @@
 #define GxEPD2_213_M21_IS_BW true
 #define GxEPD2_213_T5D_IS_BW true
 #define GxEPD2_213_BN_IS_BW true
+#define GxEPD2_213_GDEY0213B74_IS_BW true
+#define GxEPD2_260_IS_BW true
+#define GxEPD2_260_M01_IS_BW true
+#define GxEPD2_266_BN_IS_BW true
+#define GxEPD2_266_GDEY0266T90_IS_BW true
+#define GxEPD2_270_IS_BW true
+#define GxEPD2_270_GDEY027T91_IS_BW true
 #define GxEPD2_290_IS_BW true
 #define GxEPD2_290_T5_IS_BW true
 #define GxEPD2_290_T5D_IS_BW true
@@ -36,17 +44,15 @@
 #define GxEPD2_290_T94_V2_IS_BW true
 #define GxEPD2_290_BS_IS_BW true
 #define GxEPD2_290_M06_IS_BW true
-#define GxEPD2_260_IS_BW true
-#define GxEPD2_260_M01_IS_BW true
-#define GxEPD2_266_BN_IS_BW true
-#define GxEPD2_270_IS_BW true
-#define GxEPD2_270_T91_IS_BW true
+#define GxEPD2_290_GDEY029T94_IS_BW true
 #define GxEPD2_371_IS_BW true
 #define GxEPD2_370_TC1_IS_BW true
 #define GxEPD2_420_IS_BW true
 #define GxEPD2_420_M01_IS_BW true
+#define GxEPD2_420_GDEY042T91_IS_BW true
 #define GxEPD2_583_IS_BW true
 #define GxEPD2_583_T8_IS_BW true
+#define GxEPD2_583_GDEQ0583T31_IS_BW true
 #define GxEPD2_750_IS_BW true
 #define GxEPD2_750_T7_IS_BW true
 #define GxEPD2_750_YT7_IS_BW true
@@ -62,11 +68,11 @@
 #define GxEPD2_213c_IS_3C true
 #define GxEPD2_213_Z19c_IS_3C true
 #define GxEPD2_213_Z98c_IS_3C true
+#define GxEPD2_266c_IS_3C true
+#define GxEPD2_270c_IS_3C true
 #define GxEPD2_290c_IS_3C true
 #define GxEPD2_290_Z13c_IS_3C true
 #define GxEPD2_290_C90c_IS_3C true
-#define GxEPD2_266c_IS_3C true
-#define GxEPD2_270c_IS_3C true
 #define GxEPD2_420c_IS_3C true
 #define GxEPD2_420c_Z21_IS_3C true
 #define GxEPD2_583c_IS_3C true
@@ -75,13 +81,17 @@
 #define GxEPD2_750c_Z08_IS_3C true
 #define GxEPD2_750c_Z90_IS_3C true
 #define GxEPD2_1248c_IS_3C true
+// 4-color e-paper
+#define GxEPD2_437c_IS_4C true
 // 7-color e-paper
 #define GxEPD2_565c_IS_7C true
+#define GxEPD2_730c_GDEY073D46_IS_7C true
 
 #if defined(GxEPD2_DISPLAY_CLASS) && defined(GxEPD2_DRIVER_CLASS)
 #define IS_GxEPD2_DRIVER(c, x) (c##x)
 #define IS_GxEPD2_DRIVER_BW(x) IS_GxEPD2_DRIVER(x, _IS_BW)
 #define IS_GxEPD2_DRIVER_3C(x) IS_GxEPD2_DRIVER(x, _IS_3C)
+#define IS_GxEPD2_DRIVER_4C(x) IS_GxEPD2_DRIVER(x, _IS_4C)
 #define IS_GxEPD2_DRIVER_7C(x) IS_GxEPD2_DRIVER(x, _IS_7C)
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_BW used with 3-color driver class"
@@ -89,8 +99,8 @@
 #if IS_GxEPD2_3C(GxEPD2_DISPLAY_CLASS) && IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS)
 #error "GxEPD2_3C used with b/w driver class"
 #endif
-#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
-#error "neither BW nor 3C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
+#if !IS_GxEPD2_DRIVER_BW(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_3C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_4C(GxEPD2_DRIVER_CLASS) && !IS_GxEPD2_DRIVER_7C(GxEPD2_DRIVER_CLASS)
+#error "neither BW nor 3C nor 4C nor 7C kind defined for driver class (error in GxEPD2_selection_check.h)"
 #endif
 
 #endif

issue_template.md

@@ -1,17 +0,0 @@
-## Issues are disabled. Use Arduino Forum Displays.
-
-### Please post only issues that errors in this library!
-- please use the Arduino Forum Displays for questions or enhancement suggestions
-
-#### Version number of the library used, should be the current one
-- this number is needed for later reference and tracking
-
-#### Expected Behavior
-
-#### Actual Behavior
-
-#### E-Paper module used
-
-#### Arduino / Processor module used
-
-#### Steps to reproduce the behavior or reduced but complete code example

library.properties

@@ -1,5 +1,5 @@
 name=GxEPD2
-version=1.5.1
+version=1.5.2
 author=Jean-Marc Zingg
 maintainer=Jean-Marc Zingg
 sentence=Arduino Display Library for SPI E-Paper displays from Dalian Good Display and Waveshare. 

src/GxEPD2.h

@@ -98,6 +98,7 @@ class GxEPD2
       GDEQ042Z21,  Waveshare_4_2_V2_bwr = GDEQ042Z21,
       GDEW0583Z21, Waveshare_5_83_bwr = GDEW0583Z21,
       GDEW0583Z83,
+      Waveshare437inch4color,
       ACeP565,     Waveshare_5_65_7c = ACeP565,
       GDEY073D46,
       GDEW075Z09,  Waveshare_7_5_bwr = GDEW075Z09,

src/GxEPD2_3C.h

@@ -31,61 +31,70 @@
 
 #include "GxEPD2_EPD.h"
 
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_154c.h")
+// for __has_include see https://en.cppreference.com/w/cpp/preprocessor/include
+// see also https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005finclude.html
+// #if !defined(__has_include) || __has_include("epd/GxEPD2_102.h") is not portable!
+
+#if !defined(__has_include)
+// include anyway, e.g. for Arduino Due
+#define __has_include(x) true
+#endif
+
+#if __has_include("epd3c/GxEPD2_154c.h")
 #include "epd3c/GxEPD2_154c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_154_Z90c.h")
+#if __has_include("epd3c/GxEPD2_154_Z90c.h")
 #include "epd3c/GxEPD2_154_Z90c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_213c.h")
+#if __has_include("epd3c/GxEPD2_213c.h")
 #include "epd3c/GxEPD2_213c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_213_Z19c.h")
+#if __has_include("epd3c/GxEPD2_213_Z19c.h")
 #include "epd3c/GxEPD2_213_Z19c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_213_Z98c.h")
+#if __has_include("epd3c/GxEPD2_213_Z98c.h")
 #include "epd3c/GxEPD2_213_Z98c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_290c.h")
+#if __has_include("epd3c/GxEPD2_290c.h")
 #include "epd3c/GxEPD2_290c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_290_Z13c.h")
+#if __has_include("epd3c/GxEPD2_290_Z13c.h")
 #include "epd3c/GxEPD2_290_Z13c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_290_C90c.h")
+#if __has_include("epd3c/GxEPD2_290_C90c.h")
 #include "epd3c/GxEPD2_290_C90c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_266c.h")
+#if __has_include("epd3c/GxEPD2_266c.h")
 #include "epd3c/GxEPD2_266c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_150_BN.h")
+#if __has_include("epd3c/GxEPD2_150_BN.h")
 #include "epd3c/GxEPD2_270c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_420c.h")
+#if __has_include("epd3c/GxEPD2_420c.h")
 #include "epd3c/GxEPD2_420c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_420c_Z21.h")
+#if __has_include("epd3c/GxEPD2_420c_Z21.h")
 #include "epd3c/GxEPD2_420c_Z21.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_583c.h")
+#if __has_include("epd3c/GxEPD2_583c.h")
 #include "epd3c/GxEPD2_583c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_583c_Z83.h")
+#if __has_include("epd3c/GxEPD2_583c_Z83.h")
 #include "epd3c/GxEPD2_583c_Z83.h"
 #endif
-#if !defined(__has_include) || __has_include("epd7c/GxEPD2_565c.h")
+#if __has_include("epd7c/GxEPD2_565c.h")
 #include "epd7c/GxEPD2_565c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_750c.h")
+#if __has_include("epd3c/GxEPD2_750c.h")
 #include "epd3c/GxEPD2_750c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_750c_Z08.h")
+#if __has_include("epd3c/GxEPD2_750c_Z08.h")
 #include "epd3c/GxEPD2_750c_Z08.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_750c_Z90.h")
+#if __has_include("epd3c/GxEPD2_750c_Z90.h")
 #include "epd3c/GxEPD2_750c_Z90.h"
 #endif
-#if !defined(__has_include) || __has_include("epd3c/GxEPD2_1248c.h")
+#if __has_include("epd3c/GxEPD2_1248c.h")
 #include "epd3c/GxEPD2_1248c.h"
 #endif
 
@@ -194,6 +203,12 @@ class GxEPD2_3C : public GxEPD2_GFX_BASE_CLASS
       setFullWindow();
     }
 
+    // release SPI and control pins
+    void end() 
+    {
+      epd2.end();
+    }
+
     void fillScreen(uint16_t color) // 0x0 black, >0x0 white, to buffer
     {
       uint8_t black = 0xFF;

src/GxEPD2_4C.h

@@ -0,0 +1,534 @@
+// Display Library for SPI e-paper panels from Dalian Good Display and boards from Waveshare.
+// Requires HW SPI and Adafruit_GFX. Caution: these e-papers require 3.3V supply AND data lines!
+//
+// based on Demo Example from Good Display: http://www.e-paper-display.com/download_list/downloadcategoryid=34&isMode=false.html
+//
+// Author: Jean-Marc Zingg
+//
+// Version: see library.properties
+//
+// Library: https://github.com/ZinggJM/GxEPD2
+
+#ifndef _GxEPD2_4C_H_
+#define _GxEPD2_4C_H_
+// uncomment next line to use class GFX of library GFX_Root instead of Adafruit_GFX
+//#include <GFX.h>
+
+#ifndef ENABLE_GxEPD2_GFX
+// default is off
+#define ENABLE_GxEPD2_GFX 0
+#endif
+
+#if ENABLE_GxEPD2_GFX
+#include "GxEPD2_GFX.h"
+#define GxEPD2_GFX_BASE_CLASS GxEPD2_GFX
+#elif defined(_GFX_H_)
+#define GxEPD2_GFX_BASE_CLASS GFX
+#else
+#include <Adafruit_GFX.h>
+#define GxEPD2_GFX_BASE_CLASS Adafruit_GFX
+#endif
+
+#include "GxEPD2_EPD.h"
+
+// for __has_include see https://en.cppreference.com/w/cpp/preprocessor/include
+// see also https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005finclude.html
+// #if !defined(__has_include) || __has_include("epd/GxEPD2_102.h") is not portable!
+
+#if !defined(__has_include)
+// include anyway, e.g. for Arduino Due
+#define __has_include(x) true
+#endif
+
+#if __has_include("epd4c/GxEPD2_437c.h")
+#include "epd4c/GxEPD2_437c.h"
+#endif
+
+template<typename GxEPD2_Type, const uint16_t page_height>
+class GxEPD2_4C : public GxEPD2_GFX_BASE_CLASS
+{
+  public:
+    GxEPD2_Type epd2;
+#if ENABLE_GxEPD2_GFX
+    GxEPD2_4C(GxEPD2_Type epd2_instance) : GxEPD2_GFX_BASE_CLASS(epd2, GxEPD2_Type::WIDTH, GxEPD2_Type::HEIGHT), epd2(epd2_instance)
+#else
+    GxEPD2_4C(GxEPD2_Type epd2_instance) : GxEPD2_GFX_BASE_CLASS(GxEPD2_Type::WIDTH, GxEPD2_Type::HEIGHT), epd2(epd2_instance)
+#endif
+    {
+      _page_height = page_height;
+      _pages = (HEIGHT / _page_height) + ((HEIGHT % _page_height) > 0);
+      _mirror = false;
+      _using_partial_mode = false;
+      _current_page = 0;
+      setFullWindow();
+    }
+
+    uint16_t pages()
+    {
+      return _pages;
+    }
+
+    uint16_t pageHeight()
+    {
+      return _page_height;
+    }
+
+    bool mirror(bool m)
+    {
+      _swap_ (_mirror, m);
+      return m;
+    }
+
+    void drawPixel(int16_t x, int16_t y, uint16_t color)
+    {
+      if ((x < 0) || (x >= width()) || (y < 0) || (y >= height())) return;
+      if (_mirror) x = width() - x - 1;
+      // check rotation, move pixel around if necessary
+      switch (getRotation())
+      {
+        case 1:
+          _swap_(x, y);
+          x = WIDTH - x - 1;
+          break;
+        case 2:
+          x = WIDTH - x - 1;
+          y = HEIGHT - y - 1;
+          break;
+        case 3:
+          _swap_(x, y);
+          y = HEIGHT - y - 1;
+          break;
+      }
+      // transpose partial window to 0,0
+      x -= _pw_x;
+      y -= _pw_y;
+      // clip to (partial) window
+      if ((x < 0) || (x >= int16_t(_pw_w)) || (y < 0) || (y >= int16_t(_pw_h))) return;
+      // adjust for current page
+      y -= _current_page * _page_height;
+      // check if in current page
+      if ((y < 0) || (y >= int16_t(_page_height))) return;
+      uint32_t i = x / 4 + uint32_t(y) * (_pw_w / 4);
+      uint8_t pv = color4(color);
+      switch(x % 4)
+      {
+        case 0: _pixel_buffer[i] = (_pixel_buffer[i] & 0x3F) | (pv << 6); break;
+        case 1: _pixel_buffer[i] = (_pixel_buffer[i] & 0xCF) | (pv << 4); break;
+        case 2: _pixel_buffer[i] = (_pixel_buffer[i] & 0xF3) | (pv << 2); break;
+        case 3: _pixel_buffer[i] = (_pixel_buffer[i] & 0xFC) | pv; break;
+      }
+    }
+
+    void init(uint32_t serial_diag_bitrate = 0) // = 0 : disabled
+    {
+      epd2.init(serial_diag_bitrate);
+      _using_partial_mode = false;
+      _current_page = 0;
+      setFullWindow();
+    }
+
+    // init method with additional parameters:
+    // initial false for re-init after processor deep sleep wake up, if display power supply was kept
+    // only relevant for b/w displays with fast partial update
+    // reset_duration = 20 is default; a value of 2 may help with "clever" reset circuit of newer boards from Waveshare
+    // pulldown_rst_mode true for alternate RST handling to avoid feeding 5V through RST pin
+    void init(uint32_t serial_diag_bitrate, bool initial, uint16_t reset_duration = 20, bool pulldown_rst_mode = false)
+    {
+      epd2.init(serial_diag_bitrate, initial, reset_duration, pulldown_rst_mode);
+      _using_partial_mode = false;
+      _current_page = 0;
+      setFullWindow();
+    }
+
+    // init method with additional parameters:
+    // SPIClass& spi: either SPI or alternate HW SPI channel
+    // SPISettings spi_settings: e.g. for higher SPI speed selection
+    void init(uint32_t serial_diag_bitrate, bool initial, uint16_t reset_duration, bool pulldown_rst_mode, SPIClass& spi, SPISettings spi_settings)
+    {
+      epd2.selectSPI(spi, spi_settings);
+      epd2.init(serial_diag_bitrate, initial, reset_duration, pulldown_rst_mode);
+      _using_partial_mode = false;
+      _current_page = 0;
+      setFullWindow();
+    }
+
+    // release SPI and control pins
+    void end() 
+    {
+      epd2.end();
+    }
+
+    void fillScreen(uint16_t color)
+    {
+      uint8_t pv = color4(color) * 0x55; // 0b01010101
+      for (uint32_t x = 0; x < sizeof(_pixel_buffer); x++)
+      {
+        _pixel_buffer[x] = pv;
+      }
+    }
+
+    // display buffer content to screen, useful for full screen buffer
+    void display(bool partial_update_mode = false)
+    {
+      epd2.writeNative(_pixel_buffer, 0, 0, 0, WIDTH, _page_height);
+      epd2.refresh(partial_update_mode);
+      if (!partial_update_mode) epd2.powerOff();
+    }
+
+    // display part of buffer content to screen, useful for full screen buffer
+    // displayWindow, use parameters according to actual rotation.
+    // x and w should be multiple of 8, for rotation 0 or 2,
+    // y and h should be multiple of 8, for rotation 1 or 3,
+    // else window is increased as needed,
+    // this is an addressing limitation of the e-paper controllers
+    void displayWindow(uint16_t x, uint16_t y, uint16_t w, uint16_t h)
+    {
+      x = gx_uint16_min(x, width());
+      y = gx_uint16_min(y, height());
+      w = gx_uint16_min(w, width() - x);
+      h = gx_uint16_min(h, height() - y);
+      _rotate(x, y, w, h);
+      epd2.writeNativePart(_pixel_buffer, 0, x, y, WIDTH, _page_height, x, y, w, h);
+      epd2.refresh(x, y, w, h);
+    }
+
+    void setFullWindow()
+    {
+      _using_partial_mode = false;
+      _pw_x = 0;
+      _pw_y = 0;
+      _pw_w = WIDTH;
+      _pw_h = HEIGHT;
+    }
+
+    // setPartialWindow, use parameters according to actual rotation.
+    // x and w should be multiple of 8, for rotation 0 or 2,
+    // y and h should be multiple of 8, for rotation 1 or 3,
+    // else window is increased as needed,
+    // this is an addressing limitation of the e-paper controllers
+    void setPartialWindow(uint16_t x, uint16_t y, uint16_t w, uint16_t h)
+    {
+      if (!epd2.hasPartialUpdate) return;
+      _pw_x = gx_uint16_min(x, width());
+      _pw_y = gx_uint16_min(y, height());
+      _pw_w = gx_uint16_min(w, width() - _pw_x);
+      _pw_h = gx_uint16_min(h, height() - _pw_y);
+      _rotate(_pw_x, _pw_y, _pw_w, _pw_h);
+      _using_partial_mode = true;
+      // make _pw_x, _pw_w multiple of 4
+      _pw_w += _pw_x % 4;
+      if (_pw_w % 4 > 0) _pw_w += 4 - _pw_w % 4;
+      _pw_x -= _pw_x % 4;
+    }
+
+    void firstPage()
+    {
+      fillScreen(GxEPD_WHITE);
+      _current_page = 0;
+      _second_phase = false;
+      epd2.setPaged(); // for GxEPD2_565c paged workaround
+    }
+
+    bool nextPage()
+    {
+      uint16_t page_ys = _current_page * _page_height;
+      if (_using_partial_mode)
+      {
+        //Serial.print("  nextPage("); Serial.print(_pw_x); Serial.print(", "); Serial.print(_pw_y); Serial.print(", ");
+        //Serial.print(_pw_w); Serial.print(", "); Serial.print(_pw_h); Serial.print(") P"); Serial.println(_current_page);
+        uint16_t page_ye = _current_page < int16_t(_pages - 1) ? page_ys + _page_height : HEIGHT;
+        uint16_t dest_ys = _pw_y + page_ys; // transposed
+        uint16_t dest_ye = gx_uint16_min(_pw_y + _pw_h, _pw_y + page_ye);
+        if (dest_ye > dest_ys)
+        {
+          //Serial.print("writeImage("); Serial.print(_pw_x); Serial.print(", "); Serial.print(dest_ys); Serial.print(", ");
+          //Serial.print(_pw_w); Serial.print(", "); Serial.print(dest_ye - dest_ys); Serial.println(")");
+          epd2.writeNative(_pixel_buffer, 0, _pw_x, dest_ys, _pw_w, dest_ye - dest_ys);
+        }
+        else
+        {
+          //Serial.print("writeImage("); Serial.print(_pw_x); Serial.print(", "); Serial.print(dest_ys); Serial.print(", ");
+          //Serial.print(_pw_w); Serial.print(", "); Serial.print(dest_ye - dest_ys); Serial.print(") skipped ");
+          //Serial.print(dest_ys); Serial.print(".."); Serial.println(dest_ye);
+        }
+        _current_page++;
+        if (_current_page == int16_t(_pages))
+        {
+          _current_page = 0;
+          if (!_second_phase)
+          {
+            epd2.refresh(_pw_x, _pw_y, _pw_w, _pw_h);
+            if (epd2.hasFastPartialUpdate)
+            {
+              _second_phase = true;
+              return true;
+            }
+          }
+          return false;
+        }
+        fillScreen(GxEPD_WHITE);
+        return true;
+      }
+      else // full update
+      {
+        epd2.writeNative(_pixel_buffer, 0, 0, page_ys, WIDTH, gx_uint16_min(_page_height, HEIGHT - page_ys));
+        _current_page++;
+        if (_current_page == int16_t(_pages))
+        {
+          _current_page = 0;
+          if ((epd2.panel == GxEPD2::GDEW0154Z04) && (_pages > 1))
+          {
+            if (!_second_phase)
+            {
+              epd2.refresh(false); // full update after first phase
+              _second_phase = true;
+              fillScreen(GxEPD_WHITE);
+              return true;
+            }
+            else epd2.refresh(true); // partial update after second phase
+          } else epd2.refresh(false); // full update after only phase
+          epd2.powerOff();
+          return false;
+        }
+        fillScreen(GxEPD_WHITE);
+        return true;
+      }
+    }
+
+    // GxEPD style paged drawing; drawCallback() is called as many times as needed
+    void drawPaged(void (*drawCallback)(const void*), const void* pv)
+    {
+      if (_using_partial_mode)
+      {
+        for (_current_page = 0; _current_page < _pages; _current_page++)
+        {
+          uint16_t page_ys = _current_page * _page_height;
+          uint16_t page_ye = _current_page < (_pages - 1) ? page_ys + _page_height : HEIGHT;
+          uint16_t dest_ys = _pw_y + page_ys; // transposed
+          uint16_t dest_ye = gx_uint16_min(_pw_y + _pw_h, _pw_y + page_ye);
+          if (dest_ye > dest_ys)
+          {
+            fillScreen(GxEPD_WHITE);
+            drawCallback(pv);
+            epd2.writeNative(_pixel_buffer, 0, _pw_x, dest_ys, _pw_w, dest_ye - dest_ys);
+          }
+        }
+        epd2.refresh(_pw_x, _pw_y, _pw_w, _pw_h);
+      }
+      else // full update
+      {
+        epd2.setPaged(); // for GxEPD2_154c paged workaround
+        for (_current_page = 0; _current_page < _pages; _current_page++)
+        {
+          uint16_t page_ys = _current_page * _page_height;
+          fillScreen(GxEPD_WHITE);
+          drawCallback(pv);
+          epd2.writeNative(_pixel_buffer, 0, 0, page_ys, WIDTH, gx_uint16_min(_page_height, HEIGHT - page_ys));
+        }
+        epd2.refresh(false); // full update
+        epd2.powerOff();
+      }
+      _current_page = 0;
+    }
+
+    void drawInvertedBitmap(int16_t x, int16_t y, const uint8_t bitmap[], int16_t w, int16_t h, uint16_t color)
+    {
+      // taken from Adafruit_GFX.cpp, modified
+      int16_t byteWidth = (w + 7) / 8; // Bitmap scanline pad = whole byte
+      uint8_t byte = 0;
+      for (int16_t j = 0; j < h; j++)
+      {
+        for (int16_t i = 0; i < w; i++ )
+        {
+          if (i & 7) byte <<= 1;
+          else
+          {
+#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
+            byte = pgm_read_byte(&bitmap[j * byteWidth + i / 8]);
+#else
+            byte = bitmap[j * byteWidth + i / 8];
+#endif
+          }
+          if (!(byte & 0x80))
+          {
+            drawPixel(x + i, y + j, color);
+          }
+        }
+      }
+    }
+
+    //  Support for Bitmaps (Sprites) to Controller Buffer and to Screen
+    void clearScreen(uint8_t value = 0xFF) // init controller memory and screen (default white)
+    {
+      epd2.clearScreen(value);
+    }
+    void writeScreenBuffer(uint8_t value = 0xFF) // init controller memory (default white)
+    {
+      epd2.writeScreenBuffer(value);
+    }
+    // write to controller memory, without screen refresh; x and w should be multiple of 8
+    void writeImage(const uint8_t bitmap[], int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false)
+    {
+      epd2.writeImage(bitmap, x, y, w, h, invert, mirror_y, pgm);
+    }
+    void writeImagePart(const uint8_t bitmap[], int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                        int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false)
+    {
+      epd2.writeImagePart(bitmap, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
+    }
+    void writeImage(const uint8_t* black, const uint8_t* color, int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+    {
+      epd2.writeImage(black, color, x, y, w, h, invert, mirror_y, pgm);
+    }
+    void writeImage(const uint8_t* black, const uint8_t* color, int16_t x, int16_t y, int16_t w, int16_t h)
+    {
+      epd2.writeImage(black, color, x, y, w, h, false, false, false);
+    }
+    void writeImagePart(const uint8_t* black, const uint8_t* color, int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                        int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+    {
+      epd2.writeImagePart(black, color, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
+    }
+    void writeImagePart(const uint8_t* black, const uint8_t* color, int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                        int16_t x, int16_t y, int16_t w, int16_t h)
+    {
+      epd2.writeImagePart(black, color, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, false, false, false);
+    }
+    // write sprite of native data to controller memory, without screen refresh; x and w should be multiple of 8
+    void writeNative(const uint8_t* data1, const uint8_t* data2, int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+    {
+      epd2.writeNative(data1, data2, x, y, w, h, invert, mirror_y, pgm);
+    }
+    // write to controller memory, with screen refresh; x and w should be multiple of 8
+    void drawImage(const uint8_t bitmap[], int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false)
+    {
+      epd2.drawImage(bitmap, x, y, w, h, invert, mirror_y, pgm);
+    }
+    void drawImagePart(const uint8_t bitmap[], int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                       int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false)
+    {
+      epd2.drawImagePart(bitmap, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
+    }
+    void drawImage(const uint8_t* black, const uint8_t* color, int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+    {
+      epd2.drawImage(black, color, x, y, w, h, invert, mirror_y, pgm);
+    }
+    void drawImage(const uint8_t* black, const uint8_t* color, int16_t x, int16_t y, int16_t w, int16_t h)
+    {
+      epd2.drawImage(black, color, x, y, w, h, false, false, false);
+    }
+    void drawImagePart(const uint8_t* black, const uint8_t* color, int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                       int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+    {
+      epd2.drawImagePart(black, color, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
+    }
+    void drawImagePart(const uint8_t* black, const uint8_t* color, int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                       int16_t x, int16_t y, int16_t w, int16_t h)
+    {
+      epd2.drawImagePart(black, color, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, false, false, false);
+    }
+    // write sprite of native data to controller memory, with screen refresh; x and w should be multiple of 8
+    void drawNative(const uint8_t* data1, const uint8_t* data2, int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+    {
+      epd2.drawNative(data1, data2, x, y, w, h, invert, mirror_y, pgm);
+    }
+    void refresh(bool partial_update_mode = false) // screen refresh from controller memory to full screen
+    {
+      epd2.refresh(partial_update_mode);
+      if (!partial_update_mode) epd2.powerOff();
+    }
+    void refresh(int16_t x, int16_t y, int16_t w, int16_t h) // screen refresh from controller memory, partial screen
+    {
+      epd2.refresh(x, y, w, h);
+    }
+    // turns off generation of panel driving voltages, avoids screen fading over time
+    void powerOff()
+    {
+      epd2.powerOff();
+    }
+    // turns powerOff() and sets controller to deep sleep for minimum power use, ONLY if wakeable by RST (rst >= 0)
+    void hibernate()
+    {
+      epd2.hibernate();
+    }
+  private:
+    template <typename T> static inline void
+    _swap_(T & a, T & b)
+    {
+      T t = a;
+      a = b;
+      b = t;
+    };
+    static inline uint16_t gx_uint16_min(uint16_t a, uint16_t b)
+    {
+      return (a < b ? a : b);
+    };
+    static inline uint16_t gx_uint16_max(uint16_t a, uint16_t b)
+    {
+      return (a > b ? a : b);
+    };
+    void _rotate(uint16_t& x, uint16_t& y, uint16_t& w, uint16_t& h)
+    {
+      switch (getRotation())
+      {
+        case 1:
+          _swap_(x, y);
+          _swap_(w, h);
+          x = WIDTH - x - w;
+          break;
+        case 2:
+          x = WIDTH - x - w;
+          y = HEIGHT - y - h;
+          break;
+        case 3:
+          _swap_(x, y);
+          _swap_(w, h);
+          y = HEIGHT - y - h;
+          break;
+      }
+    }
+    uint8_t color4(uint16_t color)
+    {
+      static uint16_t _prev_color = GxEPD_BLACK;
+      static uint8_t _prev_color4 = 0x00; // black
+      if (color == _prev_color) return _prev_color4;
+      uint8_t cv4 = 0x00;
+      switch (color)
+      {
+        case GxEPD_BLACK: cv4 = 0x00; break;
+        case GxEPD_WHITE: cv4 = 0x01; break;
+        case GxEPD_GREEN: cv4 = 0x02; break; // use yellow?
+        case GxEPD_BLUE:  cv4 = 0x00; break; // use black
+        case GxEPD_RED:   cv4 = 0x03; break;
+        case GxEPD_YELLOW: cv4 = 0x02; break;
+        case GxEPD_ORANGE: cv4 = 0x02; break; // use yellow?
+        default:
+          {
+            uint16_t red = color & 0xF800;
+            uint16_t green = (color & 0x07E0) << 5;
+            uint16_t blue = (color & 0x001F) << 11;
+            if ((red < 0x8000) && (green < 0x8000) && (blue < 0x8000)) cv4 = 0x00; // black
+            else if ((red >= 0x8000) && (green >= 0x8000) && (blue >= 0x8000)) cv4 = 0x01; // white
+            else if ((red >= 0x8000) && (blue >= 0x8000)) cv4 = 0x03; //  red, blue > red
+            else if ((green >= 0x8000) && (blue >= 0x8000)) cv4 = 0x01; //  green, blue > white
+            else if ((red >= 0x8000) && (green >= 0xC000)) cv4 = 0x02; // yellow
+            else if ((red >= 0x8000) && (green >= 0x4000)) cv4 = 0x03; // orange > red
+            else if (red >= 0x8000) cv4 = 0x04; // red
+            else if (green >= 0x8000) cv4 = 0x00; // green > black
+            else cv4 = 0x03; // blue
+          }
+      }
+      _prev_color = color;
+      _prev_color4 = cv4;
+      return cv4;
+    }
+  private:
+    uint8_t _pixel_buffer[(GxEPD2_Type::WIDTH / 4) * page_height];
+    bool _using_partial_mode, _second_phase, _mirror;
+    uint16_t _width_bytes, _pixel_bytes;
+    int16_t _current_page;
+    uint16_t _pages, _page_height;
+    uint16_t _pw_x, _pw_y, _pw_w, _pw_h;
+};
+
+#endif

src/GxEPD2_7C.h

@@ -31,10 +31,19 @@
 
 #include "GxEPD2_EPD.h"
 
-#if !defined(__has_include) || __has_include("epd7c/GxEPD2_565c.h")
+// for __has_include see https://en.cppreference.com/w/cpp/preprocessor/include
+// see also https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005finclude.html
+// #if !defined(__has_include) || __has_include("epd/GxEPD2_102.h") is not portable!
+
+#if !defined(__has_include)
+// include anyway, e.g. for Arduino Due
+#define __has_include(x) true
+#endif
+
+#if __has_include("epd7c/GxEPD2_565c.h")
 #include "epd7c/GxEPD2_565c.h"
 #endif
-#if !defined(__has_include) || __has_include("epd7c/GxEPD2_730c_GDEY073D46.h")
+#if __has_include("epd7c/GxEPD2_730c_GDEY073D46.h")
 #include "epd7c/GxEPD2_730c_GDEY073D46.h"
 #endif
 
@@ -141,6 +150,12 @@ class GxEPD2_7C : public GxEPD2_GFX_BASE_CLASS
       setFullWindow();
     }
 
+    // release SPI and control pins
+    void end() 
+    {
+      epd2.end();
+    }
+
     void fillScreen(uint16_t color)
     {
       uint8_t pv = color7(color);
@@ -495,8 +510,8 @@ class GxEPD2_7C : public GxEPD2_GFX_BASE_CLASS
             else if ((red >= 0x8000) && (green >= 0x8000) && (blue >= 0x8000)) cv7 = 0x01; // white
             else if ((red >= 0x8000) && (blue >= 0x8000)) cv7 = red > blue ? 0x04 : 0x03; // red, blue
             else if ((green >= 0x8000) && (blue >= 0x8000)) cv7 = green > blue ? 0x02 : 0x03; // green, blue
-            else if ((red >= 0x8000) && (green >= 0xC000)) cv7 = 0x5; // yellow
-            else if ((red >= 0x8000) && (green >= 0x4000)) cv7 = 0x6; // orange
+            else if ((red >= 0x8000) && (green >= 0xC000)) cv7 = 0x05; // yellow
+            else if ((red >= 0x8000) && (green >= 0x4000)) cv7 = 0x06; // orange
             else if (red >= 0x8000) cv7 = 0x04; // red
             else if (green >= 0x8000) cv7 = 0x02; // green
             else cv7 = 0x03; // blue

src/GxEPD2_BW.h

@@ -32,151 +32,160 @@
 
 #include "GxEPD2_EPD.h"
 
-#if !defined(__has_include) || __has_include("epd/GxEPD2_102.h")
+// for __has_include see https://en.cppreference.com/w/cpp/preprocessor/include
+// see also https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005finclude.html
+// #if !defined(__has_include) || __has_include("epd/GxEPD2_102.h") is not portable!
+
+#if !defined(__has_include)
+// include anyway, e.g. for Arduino Due
+#define __has_include(x) true
+#endif
+
+#if __has_include("epd/GxEPD2_102.h")
 #include "epd/GxEPD2_102.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_150_BN.h")
+#if __has_include("epd/GxEPD2_150_BN.h")
 #include "epd/GxEPD2_150_BN.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_154.h")
+#if __has_include("epd/GxEPD2_154.h")
 #include "epd/GxEPD2_154.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_154_D67.h")
+#if __has_include("epd/GxEPD2_154_D67.h")
 #include "epd/GxEPD2_154_D67.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_154_T8.h")
+#if __has_include("epd/GxEPD2_154_T8.h")
 #include "epd/GxEPD2_154_T8.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_154_M09.h")
+#if __has_include("epd/GxEPD2_154_M09.h")
 #include "epd/GxEPD2_154_M09.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_154_M10.h")
+#if __has_include("epd/GxEPD2_154_M10.h")
 #include "epd/GxEPD2_154_M10.h"
 #endif
-#if !defined(__has_include) || __has_include("gdey/GxEPD2_154_GDEY0154D67.h")
+#if __has_include("gdey/GxEPD2_154_GDEY0154D67.h")
 #include "gdey/GxEPD2_154_GDEY0154D67.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_213.h")
+#if __has_include("epd/GxEPD2_213.h")
 #include "epd/GxEPD2_213.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_213_B72.h")
+#if __has_include("epd/GxEPD2_213_B72.h")
 #include "epd/GxEPD2_213_B72.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_213_B73.h")
+#if __has_include("epd/GxEPD2_213_B73.h")
 #include "epd/GxEPD2_213_B73.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_213_B74.h")
+#if __has_include("epd/GxEPD2_213_B74.h")
 #include "epd/GxEPD2_213_B74.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_213_flex.h")
+#if __has_include("epd/GxEPD2_213_flex.h")
 #include "epd/GxEPD2_213_flex.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_213_M21.h")
+#if __has_include("epd/GxEPD2_213_M21.h")
 #include "epd/GxEPD2_213_M21.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_213_T5D.h")
+#if __has_include("epd/GxEPD2_213_T5D.h")
 #include "epd/GxEPD2_213_T5D.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_213_BN.h")
+#if __has_include("epd/GxEPD2_213_BN.h")
 #include "epd/GxEPD2_213_BN.h"
 #endif
-#if !defined(__has_include) || __has_include("gdey/GxEPD2_213_GDEY0213B74.h")
+#if __has_include("gdey/GxEPD2_213_GDEY0213B74.h")
 #include "gdey/GxEPD2_213_GDEY0213B74.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_260.h")
+#if __has_include("epd/GxEPD2_260.h")
 #include "epd/GxEPD2_260.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_260_M01.h")
+#if __has_include("epd/GxEPD2_260_M01.h")
 #include "epd/GxEPD2_260_M01.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_266_BN.h")
+#if __has_include("epd/GxEPD2_266_BN.h")
 #include "epd/GxEPD2_266_BN.h"
 #endif
-#if !defined(__has_include) || __has_include("gdey/GxEPD2_266_GDEY0266T90.h")
+#if __has_include("gdey/GxEPD2_266_GDEY0266T90.h")
 #include "gdey/GxEPD2_266_GDEY0266T90.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_290.h")
+#if __has_include("epd/GxEPD2_290.h")
 #include "epd/GxEPD2_290.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_290_T5.h")
+#if __has_include("epd/GxEPD2_290_T5.h")
 #include "epd/GxEPD2_290_T5.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_290_T5D.h")
+#if __has_include("epd/GxEPD2_290_T5D.h")
 #include "epd/GxEPD2_290_T5D.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_290_I6FD.h")
+#if __has_include("epd/GxEPD2_290_I6FD.h")
 #include "epd/GxEPD2_290_I6FD.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_290_M06.h")
+#if __has_include("epd/GxEPD2_290_M06.h")
 #include "epd/GxEPD2_290_M06.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_290_T94.h")
+#if __has_include("epd/GxEPD2_290_T94.h")
 #include "epd/GxEPD2_290_T94.h"
 #endif
-#if !defined(__has_include) || __has_include("gdey/GxEPD2_290_GDEY029T94.h")
+#if __has_include("gdey/GxEPD2_290_GDEY029T94.h")
 #include "gdey/GxEPD2_290_GDEY029T94.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_290_T94_V2.h")
+#if __has_include("epd/GxEPD2_290_T94_V2.h")
 #include "epd/GxEPD2_290_T94_V2.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_290_BS.h")
+#if __has_include("epd/GxEPD2_290_BS.h")
 #include "epd/GxEPD2_290_BS.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_270.h")
+#if __has_include("epd/GxEPD2_270.h")
 #include "epd/GxEPD2_270.h"
 #endif
-#if !defined(__has_include) || __has_include("gdey/GxEPD2_270_GDEY027T91.h")
+#if __has_include("gdey/GxEPD2_270_GDEY027T91.h")
 #include "gdey/GxEPD2_270_GDEY027T91.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_371.h")
+#if __has_include("epd/GxEPD2_371.h")
 #include "epd/GxEPD2_371.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_370_TC1.h")
+#if __has_include("epd/GxEPD2_370_TC1.h")
 #include "epd/GxEPD2_370_TC1.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_420.h")
+#if __has_include("epd/GxEPD2_420.h")
 #include "epd/GxEPD2_420.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_420_M01.h")
+#if __has_include("epd/GxEPD2_420_M01.h")
 #include "epd/GxEPD2_420_M01.h"
 #endif
-#if !defined(__has_include) || __has_include("gdey/GxEPD2_420_GDEY042T91.h")
+#if __has_include("gdey/GxEPD2_420_GDEY042T91.h")
 #include "gdey/GxEPD2_420_GDEY042T91.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_583.h")
+#if __has_include("epd/GxEPD2_583.h")
 #include "epd/GxEPD2_583.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_583_T8.h")
+#if __has_include("epd/GxEPD2_583_T8.h")
 #include "epd/GxEPD2_583_T8.h"
 #endif
-#if !defined(__has_include) || __has_include("gdeq/GxEPD2_583_GDEQ0583T31.h")
+#if __has_include("gdeq/GxEPD2_583_GDEQ0583T31.h")
 #include "gdeq/GxEPD2_583_GDEQ0583T31.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_750.h")
+#if __has_include("epd/GxEPD2_750.h")
 #include "epd/GxEPD2_750.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_750_T7.h")
+#if __has_include("epd/GxEPD2_750_T7.h")
 #include "epd/GxEPD2_750_T7.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_750_YT7.h")
+#if __has_include("epd/GxEPD2_750_YT7.h")
 #include "epd/GxEPD2_750_YT7.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_1160_T91.h")
+#if __has_include("epd/GxEPD2_1160_T91.h")
 #include "epd/GxEPD2_1160_T91.h"
 #endif
-#if !defined(__has_include) || __has_include("epd/GxEPD2_1248.h")
+#if __has_include("epd/GxEPD2_1248.h")
 #include "epd/GxEPD2_1248.h"
 #endif
-#if !defined(__has_include) || __has_include("it8951/GxEPD2_it60.h")
+#if __has_include("it8951/GxEPD2_it60.h")
 #include "it8951/GxEPD2_it60.h"
 #endif
-#if !defined(__has_include) || __has_include("it8951/GxEPD2_it60_1448x1072.h")
+#if __has_include("it8951/GxEPD2_it60_1448x1072.h")
 #include "it8951/GxEPD2_it60_1448x1072.h"
 #endif
-#if !defined(__has_include) || __has_include("it8951/GxEPD2_it78_1872x1404.h")
+#if __has_include("it8951/GxEPD2_it78_1872x1404.h")
 #include "it8951/GxEPD2_it78_1872x1404.h"
 #endif
-#if !defined(__has_include) || __has_include("it8951/GxEPD2_it103_1872x1404.h")
+#if __has_include("it8951/GxEPD2_it103_1872x1404.h")
 #include "it8951/GxEPD2_it103_1872x1404.h"
 #endif
 
@@ -186,9 +195,9 @@ class GxEPD2_BW : public GxEPD2_GFX_BASE_CLASS
   public:
     GxEPD2_Type epd2;
 #if ENABLE_GxEPD2_GFX
-    GxEPD2_BW(GxEPD2_Type epd2_instance) : GxEPD2_GFX_BASE_CLASS(epd2, GxEPD2_Type::WIDTH, GxEPD2_Type::HEIGHT), epd2(epd2_instance)
+    GxEPD2_BW(GxEPD2_Type epd2_instance) : GxEPD2_GFX_BASE_CLASS(epd2, GxEPD2_Type::WIDTH_VISIBLE, GxEPD2_Type::HEIGHT), epd2(epd2_instance)
 #else
-    GxEPD2_BW(GxEPD2_Type epd2_instance) : GxEPD2_GFX_BASE_CLASS(GxEPD2_Type::WIDTH, GxEPD2_Type::HEIGHT), epd2(epd2_instance)
+    GxEPD2_BW(GxEPD2_Type epd2_instance) : GxEPD2_GFX_BASE_CLASS(GxEPD2_Type::WIDTH_VISIBLE, GxEPD2_Type::HEIGHT), epd2(epd2_instance)
 #endif
     {
       _page_height = page_height;
@@ -287,6 +296,12 @@ class GxEPD2_BW : public GxEPD2_GFX_BASE_CLASS
       setFullWindow();
     }
 
+    // release SPI and control pins
+    void end() 
+    {
+      epd2.end();
+    }
+
     void fillScreen(uint16_t color) // 0x0 black, >0x0 white, to buffer
     {
       uint8_t data = (color == GxEPD_BLACK) ? 0x00 : 0xFF;

src/GxEPD2_EPD.cpp

@@ -82,6 +82,14 @@ void GxEPD2_EPD::init(uint32_t serial_diag_bitrate, bool initial, uint16_t reset
   }
 }
 
+void GxEPD2_EPD::end()
+{
+  _pSPIx->end();
+  if (_cs >= 0) pinMode(_cs, INPUT);
+  if (_dc >= 0) pinMode(_dc, INPUT);
+  if (_rst >= 0) pinMode(_rst, INPUT);
+}
+
 void GxEPD2_EPD::setBusyCallback(void (*busyCallback)(const void*), const void* busy_callback_parameter)
 {
   _busy_callback = busyCallback;

src/GxEPD2_EPD.h

@@ -35,6 +35,7 @@ class GxEPD2_EPD
                uint16_t w, uint16_t h, GxEPD2::Panel p, bool c, bool pu, bool fpu);
     virtual void init(uint32_t serial_diag_bitrate = 0); // serial_diag_bitrate = 0 : disabled
     virtual void init(uint32_t serial_diag_bitrate, bool initial, uint16_t reset_duration = 10, bool pulldown_rst_mode = false);
+    virtual void end(); // release SPI and control pins
     //  Support for Bitmaps (Sprites) to Controller Buffer and to Screen
     virtual void clearScreen(uint8_t value) = 0; // init controller memory and screen (default white)
     virtual void writeScreenBuffer(uint8_t value) = 0; // init controller memory (default white)

src/bitmaps/WS_Bitmaps4c168x168.h

@@ -0,0 +1,480 @@
+/**
+    @filename   :   imagedata.cpp
+    @brief      :   data file for epd demo
+
+    Copyright (C) Waveshare     2022/08/16
+
+   Permission is hereby granted, free of charge, to any person obtaining a copy
+   of this software and associated documnetation files (the "Software"), to deal
+   in the Software without restriction, including without limitation the rights
+   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+   copies of the Software, and to permit persons to  whom the Software is
+   furished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in
+   all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+   THE SOFTWARE.
+*/
+
+#ifndef _WS_Bitmaps4c168x168_H_
+#define _WS_Bitmaps4c168x168_H_
+
+#if defined(ESP8266) || defined(ESP32)
+#include <pgmspace.h>
+#else
+#include <avr/pgmspace.h>
+#endif
+
+
+// 4 Color Image Data 168*168
+const unsigned char WS_Bitmap4c168x168[] PROGMEM = {
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFD, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF5, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00,
+  0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F,
+  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x5F, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF, 0xFF,
+  0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFF,
+  0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F,
+  0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF, 0xFC, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFF,
+  0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x5F, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xAA, 0x80, 0x00,
+  0xA8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xFF, 0xFC,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A, 0xAA, 0x80, 0x0A, 0xAA, 0x80, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x0A, 0xAA, 0x80, 0x0A, 0xAA, 0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xFF,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x57,
+  0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A, 0xAA, 0x80, 0x0A, 0xAA, 0xA0,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xFF, 0xFC, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x02, 0xAA, 0x80, 0x02, 0x8A, 0xA8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x3F, 0xFF, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2A,
+  0x80, 0x00, 0x02, 0xA8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0xFF,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2A, 0x80, 0x00, 0x0A, 0xA8, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x2A, 0x80, 0x00, 0x3A, 0xA8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x0F, 0xFF, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x7F, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2A, 0x80, 0x00,
+  0x2A, 0xA0, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFD, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00,
+  0x01, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2A, 0x80, 0x00, 0xAA, 0x80, 0x00, 0x00, 0x00, 0x00,
+  0x15, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x15, 0x54, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x2A, 0x80, 0x02, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x50, 0x00, 0x00, 0x00, 0x3F,
+  0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFF,
+  0xF0, 0x00, 0x00, 0x00, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2A, 0x80, 0x0A, 0xAB, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x55, 0x54, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xF5, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x15, 0x55,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x2A, 0x80, 0x2A, 0xA8, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x50,
+  0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x7F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x15, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2A,
+  0x80, 0x2A, 0xAA, 0xA8, 0x00, 0x00, 0x00, 0x01, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF,
+  0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xF0, 0x00, 0x00,
+  0x00, 0x00, 0x05, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x2A, 0x80, 0x2A, 0xAA, 0xA8, 0x00, 0x00,
+  0x00, 0x05, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x50, 0x00,
+  0x00, 0x00, 0x00, 0x2A, 0x80, 0x2A, 0xAA, 0xA8, 0x00, 0x00, 0x00, 0x15, 0x55, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF,
+  0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2A,
+  0xAA, 0xA8, 0x00, 0x00, 0x00, 0x15, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xF5,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55,
+  0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x7F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x54, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x3F, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xF0, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x01, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15,
+  0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x50, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x57,
+  0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x01, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x01, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xF5, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x7F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x50, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xF0,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF,
+  0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x03, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xD5,
+  0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF,
+  0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x3F, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x40, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFD, 0x55, 0x55,
+  0x55, 0x55, 0x7F, 0xFF, 0xF0, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x01, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x04, 0x00, 0x00, 0x0F, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xC0, 0x00,
+  0x01, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x40,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00, 0x03,
+  0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xC0, 0x00, 0x01, 0x55, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55,
+  0xFF, 0xFF, 0x00, 0x00, 0x05, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x05, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15,
+  0x55, 0x40, 0x00, 0x00, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0x00, 0x00, 0x15, 0x55,
+  0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x50, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x55, 0x50, 0x00, 0x00, 0xFF, 0xFF,
+  0xD5, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0x00, 0x00, 0x05, 0x55, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x15, 0x55, 0x55, 0x40, 0x00, 0x00, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x5F, 0xFF, 0xFC,
+  0x00, 0x00, 0x01, 0x55, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x05, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x55, 0x55, 0x00,
+  0x00, 0x00, 0x3F, 0xFF, 0xF5, 0x55, 0x55, 0x5F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x15, 0x55, 0x55,
+  0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x54, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x55, 0x55, 0x50, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xF5, 0x55,
+  0x55, 0x5F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x01, 0x55, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x15, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15,
+  0x55, 0x55, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xF5, 0x55, 0x55, 0x7F, 0xFF, 0xF0, 0x00, 0x00,
+  0x00, 0x00, 0x55, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x54,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00,
+  0x0F, 0xFF, 0xFD, 0x55, 0x55, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x05, 0x55, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x01, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFD, 0x55, 0x55, 0x7F,
+  0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x55, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x54, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFD, 0x55, 0x55, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x55, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF,
+  0xFF, 0x55, 0x55, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x55, 0x55, 0xFF, 0xFF, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x55, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0xFF, 0xFF, 0x55, 0x55, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x55, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x55,
+  0x57, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x01, 0x55, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xD5, 0x57, 0xFF, 0xFC, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x55,
+  0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x3F, 0xFF, 0xD5, 0x57, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xD5, 0x57, 0xFF,
+  0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x01, 0x55, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xD5, 0x5F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x55, 0x55, 0x50, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F,
+  0xFF, 0xF5, 0x5F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x35, 0x55, 0x55, 0x5C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xF5, 0x5F, 0xFF, 0xF0, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xF5,
+  0x55, 0x55, 0x5F, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x0F, 0xFF, 0xF5, 0x5F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xF5, 0x55, 0x55, 0x5F, 0xF0, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xF5,
+  0x5F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x3F, 0xF5, 0x55, 0x55, 0x5F, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xF5, 0x5F, 0xFF, 0xF0, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xD5, 0x55, 0x55,
+  0x57, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x0F, 0xFF, 0xF5, 0x5F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xD5, 0x55, 0x55, 0x57, 0xFF, 0xC0, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xF5, 0x7F, 0xFF,
+  0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03,
+  0xFF, 0xD5, 0x55, 0x55, 0x57, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFD, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0xAA, 0x80,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xD5, 0x55, 0x55, 0x57, 0xFF,
+  0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xA8, 0x00, 0x00, 0x00, 0x03,
+  0xFF, 0xFD, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x02, 0xAA, 0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x3F, 0xFF, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x2A, 0xAA, 0x80, 0x00, 0x00, 0x03, 0xFF, 0xFD, 0x7F, 0xFF, 0xC0, 0x00,
+  0x00, 0x0A, 0xAA, 0xA8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0x55,
+  0x55, 0x55, 0x55, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A, 0xAA,
+  0xA0, 0x00, 0x00, 0x03, 0xFF, 0xFD, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x0A, 0xA0, 0xA8, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFC, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A, 0xAA, 0xA0, 0x00, 0x00, 0x03, 0xFF, 0xFD,
+  0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x0A, 0x80, 0xAB, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x02, 0x0A, 0xA0, 0x00, 0x00, 0x03, 0xFF, 0xFD, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x0A,
+  0x80, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xF5, 0x55, 0x55, 0x55,
+  0x55, 0x5F, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A, 0xA0, 0x00,
+  0x00, 0x03, 0xFF, 0xFD, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x0A, 0x80, 0xAA, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xAA, 0xA0, 0x00, 0x00, 0x03, 0xFF, 0xFD, 0x7F, 0xFF,
+  0xC0, 0x00, 0x00, 0x0A, 0xA2, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
+  0xF5, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x02, 0xAA, 0xA0, 0x00, 0x00, 0x03, 0xFF, 0xFD, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x0A, 0xAA, 0xAA,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x5F,
+  0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xAA, 0x80, 0x00, 0x00, 0x03,
+  0xFF, 0xFD, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x02, 0xAA, 0xAB, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x5B, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x02, 0xAA, 0xA0, 0x00, 0x00, 0x03, 0xFF, 0xFD, 0x7F, 0xFF, 0xC0, 0x00,
+  0x00, 0x00, 0xAA, 0xA8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xF5, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xAA,
+  0xA0, 0x00, 0x00, 0x03, 0xFF, 0xFD, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x02, 0xA8, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A, 0xA0, 0x00, 0x00, 0x03, 0xFF, 0xFD,
+  0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x0E, 0xA8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x3F, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x5C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x02, 0x0A, 0xA0, 0x00, 0x00, 0x03, 0xFF, 0xFD, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x00,
+  0xAA, 0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xF5, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A, 0xAA, 0xA0, 0x00,
+  0x00, 0x03, 0xFF, 0xFD, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0xAA, 0x80, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x40, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A, 0xAA, 0xA0, 0x00, 0x00, 0x03, 0xFF, 0xFD, 0x7F, 0xFF,
+  0xC0, 0x00, 0x00, 0x00, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0D,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x2A, 0xAA, 0x80, 0x00, 0x00, 0x03, 0xFF, 0xFD, 0x7F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x80, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xAA, 0x00, 0x00, 0x00, 0x0F,
+  0xFF, 0xFD, 0x5F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x15, 0x55, 0x57, 0xD5, 0x57, 0xF5, 0x55, 0x55, 0x55, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xF5, 0x5F, 0xFF, 0xF0, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x55, 0x5F,
+  0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x0F, 0xFF, 0xF5, 0x5F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x55, 0x7F, 0xFF, 0xFF, 0xFF, 0xF5, 0x55, 0x55,
+  0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xF5,
+  0x5F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x05, 0x55, 0x57, 0xFF, 0xFF, 0xFF, 0xFF, 0xF1, 0x55, 0x55, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xF5, 0x5F, 0xFF, 0xF0, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x55, 0x53, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xC0, 0x15, 0x55, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x0F, 0xFF, 0xF5, 0x5F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x55, 0x55, 0x40, 0x3F, 0xFF, 0xFF, 0xFC, 0x00, 0x01, 0x55, 0x55, 0x50,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xF5, 0x5F, 0xFF,
+  0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x54,
+  0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x15, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xF5, 0x57, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x01, 0x55, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F,
+  0xFF, 0xD5, 0x57, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x15, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x55, 0x50, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xD5, 0x57, 0xFF, 0xFC, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x54, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x3F, 0xFF, 0xD5, 0x57, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x05, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x55, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xD5,
+  0x55, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x55,
+  0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x55, 0x40, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x55, 0x55, 0xFF, 0xFF, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0xFF, 0xFF, 0x55, 0x55, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00,
+  0x00, 0x01, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x05, 0x54, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x55, 0x55, 0xFF,
+  0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00, 0x00, 0x05, 0x55, 0x40, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x40, 0x01, 0x54, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x55, 0x55, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00,
+  0x05, 0x55, 0x00, 0x00, 0x00, 0x15, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x50, 0x01, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF,
+  0xFD, 0x55, 0x55, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x55, 0x55, 0x40, 0x00, 0x00, 0x55,
+  0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
+  0x54, 0x05, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFD, 0x55, 0x55, 0x7F, 0xFF, 0xF0,
+  0x00, 0x00, 0x00, 0x01, 0x55, 0x55, 0x50, 0x00, 0x01, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x15, 0x55, 0x55, 0x00, 0x00,
+  0x00, 0x00, 0x0F, 0xFF, 0xFD, 0x55, 0x55, 0x5F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x15, 0x55, 0x55,
+  0x40, 0x00, 0x05, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x01, 0x45, 0x55, 0x55, 0x50, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xF5, 0x55,
+  0x55, 0x5F, 0xFF, 0xFC, 0x00, 0x00, 0x01, 0x55, 0x55, 0x54, 0x00, 0x00, 0x15, 0x50, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
+  0x55, 0x55, 0x55, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xF5, 0x55, 0x55, 0x5F, 0xFF, 0xFC, 0x00, 0x00,
+  0x05, 0x55, 0x55, 0x50, 0x00, 0x00, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x55, 0x55, 0x40, 0x00, 0x00,
+  0x3F, 0xFF, 0xF5, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0x00, 0x00, 0x15, 0x55, 0x55, 0x00, 0x00, 0x01,
+  0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x55, 0x50, 0x00, 0x00, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x57,
+  0xFF, 0xFF, 0x00, 0x00, 0x05, 0x55, 0x50, 0x00, 0x00, 0x15, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15,
+  0x55, 0x40, 0x00, 0x00, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0x00, 0x00, 0x01, 0x55,
+  0x00, 0x00, 0x00, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x00, 0x00, 0x00, 0xFF, 0xFF,
+  0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xC0, 0x00, 0x01, 0x54, 0x00, 0x00, 0x01, 0x54, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF,
+  0xC0, 0x00, 0x00, 0x40, 0x00, 0x00, 0x05, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
+  0x00, 0x03, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x15, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFD, 0x55, 0x55,
+  0x55, 0x55, 0x7F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFC, 0x00,
+  0x00, 0x00, 0x00, 0x01, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F,
+  0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55,
+  0x57, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xC0, 0x00, 0x00,
+  0x00, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F,
+  0xFF, 0xF0, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x01, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x0F, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x01, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x01, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFD, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x55, 0x40,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x55, 0x40, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF,
+  0xD5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x15, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55,
+  0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x54, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x0F, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xFC, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFD, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55,
+  0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x55, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x5F, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x02, 0xA8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF,
+  0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0xF0, 0x00, 0x00,
+  0x00, 0x00, 0x05, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2A, 0xA8, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x05, 0x55, 0x40, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x15, 0x55, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0xAA, 0xA8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x50, 0x00, 0x00,
+  0x00, 0x00, 0x0F, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F,
+  0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x15, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xAA, 0xA0,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x55, 0x50, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFD, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00,
+  0x55, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x55, 0x54, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x15, 0x54, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x02, 0xAA, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x50, 0x00, 0x00, 0x00, 0x0F,
+  0xFF, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF,
+  0xFC, 0x00, 0x00, 0x00, 0x01, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xAA, 0xA8, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x15, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x40,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xAA, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
+  0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x7F, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
+  0xAA, 0xAA, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFD,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFF, 0xF0,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xAA, 0xAA, 0x80, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x02, 0xA8, 0x2A, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0xFF, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xA8, 0x2A,
+  0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xFF, 0xFC, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xA8, 0xAA, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x02, 0xAA, 0xAA, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF,
+  0xD5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0xFF, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xAA, 0xAA, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xFF, 0xFC, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xAA, 0xA8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x3F, 0xFF, 0xFF, 0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x0A, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xF5, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF,
+  0xFF, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF,
+  0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F,
+  0xFF, 0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xF5, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x7F, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+  0xFD, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00,
+  0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x5F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x5F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFD,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+  0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x57, 0xFF,
+  0xFF, 0xFF, 0xFF, 0xD5, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+};
+#endif

src/epd/GxEPD2_102.h

@@ -21,6 +21,7 @@ class GxEPD2_102 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 80;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 128;
     static const GxEPD2::Panel panel = GxEPD2::GDEW0102T4;
     static const bool hasColor = false;

src/epd/GxEPD2_1160_T91.h

@@ -21,6 +21,7 @@ class GxEPD2_1160_T91 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 960;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 640;
     static const GxEPD2::Panel panel = GxEPD2::GDEH116T91;
     static const bool hasColor = false;

src/epd/GxEPD2_1248.h

@@ -21,6 +21,7 @@ class GxEPD2_1248 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 1304;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 984;
     static const GxEPD2::Panel panel = GxEPD2::GDEW1248T3;
     static const bool hasColor = false;

src/epd/GxEPD2_150_BN.h

@@ -22,6 +22,7 @@ class GxEPD2_150_BN : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 200;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 200;
     static const GxEPD2::Panel panel = GxEPD2::DEPG0150BN;
     static const bool hasColor = false;

src/epd/GxEPD2_154.h

@@ -20,6 +20,7 @@ class GxEPD2_154 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 200;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 200;
     static const GxEPD2::Panel panel = GxEPD2::GDEP015OC1;
     static const bool hasColor = false;

src/epd/GxEPD2_154_D67.h

@@ -21,6 +21,7 @@ class GxEPD2_154_D67 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 200;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 200;
     static const GxEPD2::Panel panel = GxEPD2::GDEH0154D67;
     static const bool hasColor = false;

src/epd/GxEPD2_154_M09.h

@@ -21,6 +21,7 @@ class GxEPD2_154_M09 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 200;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 200;
     static const GxEPD2::Panel panel = GxEPD2::GDEW0154M09;
     static const bool hasColor = false;

src/epd/GxEPD2_154_M10.h

@@ -21,6 +21,7 @@ class GxEPD2_154_M10 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 152;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 152;
     static const GxEPD2::Panel panel = GxEPD2::GDEW0154M10;
     static const bool hasColor = false;

src/epd/GxEPD2_154_T8.h

@@ -21,6 +21,7 @@ class GxEPD2_154_T8 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 152;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 152;
     static const GxEPD2::Panel panel = GxEPD2::GDEW0154T8;
     static const bool hasColor = false;

src/epd/GxEPD2_213.h

@@ -20,6 +20,7 @@ class GxEPD2_213 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = 122;
     static const uint16_t HEIGHT = 250;
     static const GxEPD2::Panel panel = GxEPD2::GDE0213B1;
     static const bool hasColor = false;

src/epd/GxEPD2_213_B72.h

@@ -20,6 +20,7 @@ class GxEPD2_213_B72 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = 122;
     static const uint16_t HEIGHT = 250;
     static const GxEPD2::Panel panel = GxEPD2::GDEH0213B72;
     static const bool hasColor = false;

src/epd/GxEPD2_213_B73.h

@@ -21,6 +21,7 @@ class GxEPD2_213_B73 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = 122;
     static const uint16_t HEIGHT = 250;
     static const GxEPD2::Panel panel = GxEPD2::GDEH0213B73;
     static const bool hasColor = false;

src/epd/GxEPD2_213_B74.h

@@ -21,6 +21,7 @@ class GxEPD2_213_B74 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = 122;
     static const uint16_t HEIGHT = 250;
     static const GxEPD2::Panel panel = GxEPD2::GDEM0213B74;
     static const bool hasColor = false;

src/epd/GxEPD2_213_BN.h

@@ -21,6 +21,7 @@ class GxEPD2_213_BN : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = 122;
     static const uint16_t HEIGHT = 250;
     static const GxEPD2::Panel panel = GxEPD2::DEPG0213BN;
     static const bool hasColor = false;

src/epd/GxEPD2_213_M21.h

@@ -21,6 +21,7 @@ class GxEPD2_213_M21 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 104;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 212;
     static const GxEPD2::Panel panel = GxEPD2::GDEW0213M21;
     static const bool hasColor = false;

src/epd/GxEPD2_213_T5D.h

@@ -20,6 +20,7 @@ class GxEPD2_213_T5D : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 104;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 212;
     static const GxEPD2::Panel panel = GxEPD2::GDEW0213T5D;
     static const bool hasColor = false;

src/epd/GxEPD2_213_flex.h

@@ -20,6 +20,7 @@ class GxEPD2_213_flex : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 104;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 212;
     static const GxEPD2::Panel panel = GxEPD2::GDEW0213I5F;
     static const bool hasColor = false;

src/epd/GxEPD2_260.h

@@ -21,6 +21,7 @@ class GxEPD2_260 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 152;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 296;
     static const GxEPD2::Panel panel = GxEPD2::GDEW026T0;
     static const bool hasColor = false;

src/epd/GxEPD2_260_M01.h

@@ -21,6 +21,7 @@ class GxEPD2_260_M01 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 152;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 296;
     static const GxEPD2::Panel panel = GxEPD2::GDEW026M01;
     static const bool hasColor = false;

src/epd/GxEPD2_266_BN.h

@@ -22,6 +22,7 @@ class GxEPD2_266_BN : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 152;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 296;
     static const GxEPD2::Panel panel = GxEPD2::DEPG0266BN;
     static const bool hasColor = false;

src/epd/GxEPD2_270.h

@@ -20,6 +20,7 @@ class GxEPD2_270 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 176;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 264;
     static const GxEPD2::Panel panel = GxEPD2::GDEW027W3;
     static const bool hasColor = false;

src/epd/GxEPD2_290.h

@@ -20,6 +20,7 @@ class GxEPD2_290 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 296;
     static const GxEPD2::Panel panel = GxEPD2::GDEH029A1;
     static const bool hasColor = false;

src/epd/GxEPD2_290_BS.h

@@ -22,6 +22,7 @@ class GxEPD2_290_BS : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 296;
     static const GxEPD2::Panel panel = GxEPD2::DEPG0290BS;
     static const bool hasColor = false;

src/epd/GxEPD2_290_I6FD.h

@@ -21,6 +21,7 @@ class GxEPD2_290_I6FD : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 296;
     static const GxEPD2::Panel panel = GxEPD2::GDEW029I6FD;
     static const bool hasColor = false;

src/epd/GxEPD2_290_M06.h

@@ -20,6 +20,7 @@ class GxEPD2_290_M06 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 296;
     static const GxEPD2::Panel panel = GxEPD2::GDEW029M06;
     static const bool hasColor = false;

src/epd/GxEPD2_290_T5.h

@@ -20,6 +20,7 @@ class GxEPD2_290_T5 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 296;
     static const GxEPD2::Panel panel = GxEPD2::GDEW029T5;
     static const bool hasColor = false;

src/epd/GxEPD2_290_T5D.h

@@ -20,6 +20,7 @@ class GxEPD2_290_T5D : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 296;
     static const GxEPD2::Panel panel = GxEPD2::GDEW029T5D;
     static const bool hasColor = false;

src/epd/GxEPD2_290_T94.h

@@ -21,6 +21,7 @@ class GxEPD2_290_T94 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 296;
     static const GxEPD2::Panel panel = GxEPD2::GDEM029T94;
     static const bool hasColor = false;

src/epd/GxEPD2_290_T94_V2.h

@@ -24,6 +24,7 @@ class GxEPD2_290_T94_V2 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 296;
     static const GxEPD2::Panel panel = GxEPD2::GDEM029T94;
     static const bool hasColor = false;

src/epd/GxEPD2_370_TC1.h

@@ -22,6 +22,7 @@ class GxEPD2_370_TC1 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 280;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 480;
     static const GxEPD2::Panel panel = GxEPD2::ED037TC1;
     static const bool hasColor = false;

src/epd/GxEPD2_371.h

@@ -21,6 +21,7 @@ class GxEPD2_371 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 240;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 416;
     static const GxEPD2::Panel panel = GxEPD2::GDEW0371W7;
     static const bool hasColor = false;

src/epd/GxEPD2_420.h

@@ -20,6 +20,7 @@ class GxEPD2_420 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 400;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 300;
     static const GxEPD2::Panel panel = GxEPD2::GDEW042T2;
     static const bool hasColor = false;

src/epd/GxEPD2_420_M01.h

@@ -21,6 +21,7 @@ class GxEPD2_420_M01 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 400;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 300;
     static const GxEPD2::Panel panel = GxEPD2::GDEW042M01;
     static const bool hasColor = false;

src/epd/GxEPD2_583.h

@@ -20,6 +20,7 @@ class GxEPD2_583 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 600;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 448;
     static const GxEPD2::Panel panel = GxEPD2::GDEW0583T7;
     static const bool hasColor = false;

src/epd/GxEPD2_583_T8.h

@@ -21,6 +21,7 @@ class GxEPD2_583_T8 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 648;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 480;
     static const GxEPD2::Panel panel = GxEPD2::GDEW0583T8;
     static const bool hasColor = false;

src/epd/GxEPD2_750.h

@@ -20,6 +20,7 @@ class GxEPD2_750 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 640;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 384;
     static const GxEPD2::Panel panel = GxEPD2::GDEW075T8;
     static const bool hasColor = false;

src/epd/GxEPD2_750_T7.h

@@ -21,6 +21,7 @@ class GxEPD2_750_T7 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 800;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 480;
     static const GxEPD2::Panel panel = GxEPD2::GDEW075T7;
     static const bool hasColor = false;

src/epd/GxEPD2_750_YT7.h

@@ -21,6 +21,7 @@ class GxEPD2_750_YT7 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 800;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 480;
     static const GxEPD2::Panel panel = GxEPD2::GDEY075T7;
     static const bool hasColor = false;

src/epd3c/GxEPD2_420c_Z21.cpp

@@ -14,7 +14,7 @@
 #include "GxEPD2_420c_Z21.h"
 
 GxEPD2_420c_Z21::GxEPD2_420c_Z21(int16_t cs, int16_t dc, int16_t rst, int16_t busy) :
-  GxEPD2_EPD(cs, dc, rst, busy, LOW, 20000000, WIDTH, HEIGHT, panel, hasColor, hasPartialUpdate, hasFastPartialUpdate)
+  GxEPD2_EPD(cs, dc, rst, busy, LOW, 40000000, WIDTH, HEIGHT, panel, hasColor, hasPartialUpdate, hasFastPartialUpdate) // 28s for GDEW042C37
 {
 }
 

src/epd4c/GxEPD2_437c.cpp

@@ -0,0 +1,661 @@
+// Display Library for SPI e-paper panels from Dalian Good Display and boards from Waveshare.
+// Requires HW SPI and Adafruit_GFX. Caution: the e-paper panels require 3.3V supply AND data lines!
+//
+// based on Demo Example from Waveshare: https://github.com/waveshare/e-Paper/tree/master/Arduino/epd4in37g
+// Panel: 4.37inch 4-Color E-Paper : https://www.waveshare.com/product/displays/e-paper/4.37inch-e-paper-module-g.htm
+// Controller: unknown
+// initcode extracted from Waveshare library file epd4in37g.cpp from: https://github.com/waveshare/e-Paper/tree/master/Arduino/epd4in37g
+//
+// Author: Jean-Marc Zingg
+//
+// Version: see library.properties
+//
+// Library: https://github.com/ZinggJM/GxEPD2
+
+#include "GxEPD2_437c.h"
+
+GxEPD2_437c::GxEPD2_437c(int16_t cs, int16_t dc, int16_t rst, int16_t busy) :
+  GxEPD2_EPD(cs, dc, rst, busy, LOW, 25000000, WIDTH, HEIGHT, panel, hasColor, hasPartialUpdate, hasFastPartialUpdate)
+{
+  _paged = false;
+}
+
+void GxEPD2_437c::clearScreen(uint8_t value)
+{
+  clearScreen(value, 0xFF);
+}
+
+void GxEPD2_437c::clearScreen(uint8_t black_value, uint8_t color_value)
+{
+  writeScreenBuffer(black_value, color_value);
+  _Update_Full();
+}
+
+void GxEPD2_437c::writeScreenBuffer(uint8_t value)
+{
+  writeScreenBuffer(value, 0xFF);
+}
+
+void GxEPD2_437c::writeScreenBuffer(uint8_t black_value, uint8_t color_value)
+{
+  _initial_write = false; // initial full screen buffer clean done
+  _Init_Full();
+  _writeCommand(0x10);
+  _startTransfer();
+  for (uint32_t i = 0; i < uint32_t(WIDTH) * uint32_t(HEIGHT) / 4; i++)
+  {
+    _transfer(0xFF == black_value ? 0x55 : 0x00);
+  }
+  _endTransfer();
+}
+
+void GxEPD2_437c::writeImage(const uint8_t bitmap[], int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+{
+  //Serial.print("writeImage("); Serial.print(x); Serial.print(", "); Serial.print(y); Serial.print(", ");
+  //Serial.print(w); Serial.print(", "); Serial.print(h); Serial.println(")");
+  delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+  if (_paged && (x == 0) && (w == int16_t(WIDTH)) && (h < int16_t(HEIGHT)))
+  {
+    //Serial.println("paged");
+    _startTransfer();
+    for (uint32_t i = 0; i < uint32_t(WIDTH) * uint32_t(h) / 8; i++)
+    {
+      uint8_t data = bitmap[i];
+      for (int16_t k = 0; k < 2; k++)
+      {
+        uint8_t data2 = (data & 0x80 ? 0x40 : 0x00) | (data & 0x40 ? 0x10 : 0x00) |
+                        (data & 0x20 ? 0x04 : 0x00) | (data & 0x10 ? 0x01 : 0x00);
+        data <<= 4;
+        _transfer(data2);
+      }
+    }
+    _endTransfer();
+    if (y + h == HEIGHT) // last page
+    {
+      //Serial.println("paged ended");
+      _paged = false;
+    }
+  }
+  else
+  {
+    _paged = false;
+    int16_t wb = (w + 7) / 8; // width bytes, bitmaps are padded
+    x -= x % 8; // byte boundary
+    w = wb * 8; // byte boundary
+    if ((w <= 0) || (h <= 0)) return;
+    _Init_Full();
+    _writeCommand(0x10);
+    _startTransfer();
+    for (int16_t i = 0; i < int16_t(HEIGHT); i++)
+    {
+      for (int16_t j = 0; j < int16_t(WIDTH); j += 8)
+      {
+        uint8_t data = 0xFF;
+        if ((j >= x) && (j <= x + w) && (i >= y) && (i < y + h))
+        {
+          uint32_t idx = mirror_y ? (j - x) / 8 + uint32_t((h - 1 - (i - y))) * wb : (j - x) / 8 + uint32_t(i - y) * wb;
+          if (pgm)
+          {
+#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
+            data = pgm_read_byte(&bitmap[idx]);
+#else
+            data = bitmap[idx];
+#endif
+          }
+          else
+          {
+            data = bitmap[idx];
+          }
+          if (invert) data = ~data;
+        }
+        for (int16_t k = 0; k < 2; k++)
+        {
+          uint8_t data2 = (data & 0x80 ? 0x40 : 0x00) | (data & 0x40 ? 0x10 : 0x00) |
+                          (data & 0x20 ? 0x04 : 0x00) | (data & 0x10 ? 0x01 : 0x00);
+          data <<= 4;
+          _transfer(data2);
+        }
+      }
+    }
+    _endTransfer();
+  }
+  delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+}
+
+void GxEPD2_437c::writeImage(const uint8_t* black, const uint8_t* color, int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+{
+  if (!black && !color) return;
+  if (!color) return writeImage(black, x, y, w, h, invert, mirror_y, pgm);
+  //Serial.print("writeImage("); Serial.print(x); Serial.print(", "); Serial.print(y); Serial.print(", ");
+  //Serial.print(w); Serial.print(", "); Serial.print(h); Serial.println(")");
+  delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+  if (_paged && (x == 0) && (w == int16_t(WIDTH)) && (h < int16_t(HEIGHT)))
+  {
+    //Serial.println("paged");
+    _startTransfer();
+    for (uint32_t i = 0; i < uint32_t(WIDTH) * uint32_t(h) / 8; i++)
+    {
+      uint8_t black_data = black[i];
+      uint8_t color_data = color[i];
+      for (int16_t k = 0; k < 2; k++)
+      {
+        uint8_t out_data = 0x00;
+        for (int16_t l = 0; l < 4; l++)
+        {
+          out_data <<= 2;
+          if (!(color_data & 0x80)) out_data |= 0x03; // red
+          else out_data |= black_data & 0x80 ? 0x01 : 0x00; // white or black
+          black_data <<= 1;
+          color_data <<= 1;
+        }
+        _transfer(out_data);
+      }
+    }
+    _endTransfer();
+    if (y + h == HEIGHT) // last page
+    {
+      //Serial.println("paged ended");
+      _paged = false;
+    }
+  }
+  else
+  {
+    _paged = false;
+    int16_t wb = (w + 7) / 8; // width bytes, bitmaps are padded
+    x -= x % 8; // byte boundary
+    w = wb * 8; // byte boundary
+    if ((w <= 0) || (h <= 0)) return;
+    _Init_Full();
+    _writeCommand(0x10);
+    _startTransfer();
+    for (int16_t i = 0; i < int16_t(HEIGHT); i++)
+    {
+      for (int16_t j = 0; j < int16_t(WIDTH); j += 8)
+      {
+        uint8_t black_data = 0xFF, color_data = 0xFF;
+        if ((j >= x) && (j < x + w) && (i >= y) && (i < y + h))
+        {
+          uint32_t idx = mirror_y ? (j - x) / 8 + uint32_t((h - 1 - (i - y))) * wb : (j - x) / 8 + uint32_t(i - y) * wb;
+          if (pgm)
+          {
+#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
+            black_data = pgm_read_byte(&black[idx]);
+            color_data = pgm_read_byte(&color[idx]);
+#else
+            black_data = black[idx];
+            color_data = color[idx];
+#endif
+          }
+          else
+          {
+            black_data = black[idx];
+            color_data = color[idx];
+          }
+          if (invert)
+          {
+            black_data = ~black_data;
+            color_data = ~color_data;
+          }
+        }
+        for (int16_t k = 0; k < 2; k++)
+        {
+          uint8_t out_data = 0x00;
+          for (int16_t l = 0; l < 4; l++)
+          {
+            out_data <<= 2;
+            if (!(color_data & 0x80)) out_data |= 0x03; // red
+            else out_data |= black_data & 0x80 ? 0x01 : 0x00; // white or black
+            black_data <<= 1;
+            color_data <<= 1;
+          }
+          _transfer(out_data);
+        }
+      }
+    }
+    _endTransfer();
+  }
+  delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+}
+
+void GxEPD2_437c::writeImagePart(const uint8_t bitmap[], int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                                 int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+{
+  delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+  if ((w_bitmap < 0) || (h_bitmap < 0) || (w < 0) || (h < 0)) return;
+  if ((x_part < 0) || (x_part >= w_bitmap)) return;
+  if ((y_part < 0) || (y_part >= h_bitmap)) return;
+  int16_t wb_bitmap = (w_bitmap + 7) / 8; // width bytes, bitmaps are padded
+  x_part -= x_part % 8; // byte boundary
+  w = w_bitmap - x_part < w ? w_bitmap - x_part : w; // limit
+  h = h_bitmap - y_part < h ? h_bitmap - y_part : h; // limit
+  x -= x % 8; // byte boundary
+  w = 8 * ((w + 7) / 8); // byte boundary, bitmaps are padded
+  int16_t x1 = x < 0 ? 0 : x; // limit
+  int16_t y1 = y < 0 ? 0 : y; // limit
+  int16_t w1 = x + w < int16_t(WIDTH) ? w : int16_t(WIDTH) - x; // limit
+  int16_t h1 = y + h < int16_t(HEIGHT) ? h : int16_t(HEIGHT) - y; // limit
+  int16_t dx = x1 - x;
+  int16_t dy = y1 - y;
+  w1 -= dx;
+  h1 -= dy;
+  if ((w1 <= 0) || (h1 <= 0)) return;
+  _Init_Full();
+  _writeCommand(0x10);
+  _startTransfer();
+  for (int16_t i = 0; i < int16_t(HEIGHT); i++)
+  {
+    for (int16_t j = 0; j < int16_t(WIDTH); j += 8)
+    {
+      uint8_t data = 0xFF;
+      if ((j >= x1) && (j < x1 + w) && (i >= y1) && (i < y1 + h))
+      {
+        // use wb_bitmap, h_bitmap of bitmap for index!
+        uint32_t idx = mirror_y ? (x_part + j - x1) / 8 + uint32_t((h_bitmap - 1 - (y_part + i - y1))) * wb_bitmap : (x_part + j - x1) / 8 + uint32_t(y_part + i - y1) * wb_bitmap;
+        if (pgm)
+        {
+#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
+          data = pgm_read_byte(&bitmap[idx]);
+#else
+          data = bitmap[idx];
+#endif
+        }
+        else
+        {
+          data = bitmap[idx];
+        }
+        if (invert) data = ~data;
+      }
+      for (int16_t k = 0; k < 2; k++)
+      {
+        uint8_t data2 = (data & 0x80 ? 0x40 : 0x00) | (data & 0x40 ? 0x10 : 0x00) |
+                        (data & 0x20 ? 0x04 : 0x00) | (data & 0x10 ? 0x01 : 0x00);
+        data <<= 4;
+        _transfer(data2);
+      }
+    }
+  }
+  _endTransfer();
+  delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+}
+
+void GxEPD2_437c::writeImagePart(const uint8_t* black, const uint8_t* color, int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                                 int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+{
+  //Serial.print("writeImagePart("); Serial.print(x_part); Serial.print(", "); Serial.print(y_part); Serial.print(", ");
+  //Serial.print(w_bitmap); Serial.print(", "); Serial.print(h_bitmap); Serial.print(", ");
+  //Serial.print(x); Serial.print(", "); Serial.print(y); Serial.print(", ");
+  //Serial.print(w); Serial.print(", "); Serial.print(h); Serial.println(")");
+  if (!black && !color) return;
+  if (!color) return writeImagePart(black, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
+  delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+  if ((w_bitmap < 0) || (h_bitmap < 0) || (w < 0) || (h < 0)) return;
+  if ((x_part < 0) || (x_part >= w_bitmap)) return;
+  if ((y_part < 0) || (y_part >= h_bitmap)) return;
+  int16_t wb_bitmap = (w_bitmap + 7) / 8; // width bytes, bitmaps are padded
+  x_part -= x_part % 8; // byte boundary
+  w = w_bitmap - x_part < w ? w_bitmap - x_part : w; // limit
+  h = h_bitmap - y_part < h ? h_bitmap - y_part : h; // limit
+  x -= x % 8; // byte boundary
+  w = 8 * ((w + 7) / 8); // byte boundary, bitmaps are padded
+  int16_t x1 = x < 0 ? 0 : x; // limit
+  int16_t y1 = y < 0 ? 0 : y; // limit
+  int16_t w1 = x + w < int16_t(WIDTH) ? w : int16_t(WIDTH) - x; // limit
+  int16_t h1 = y + h < int16_t(HEIGHT) ? h : int16_t(HEIGHT) - y; // limit
+  int16_t dx = x1 - x;
+  int16_t dy = y1 - y;
+  w1 -= dx;
+  h1 -= dy;
+  if ((w1 <= 0) || (h1 <= 0)) return;
+  _Init_Full();
+  _writeCommand(0x10);
+  _startTransfer();
+  for (int16_t i = 0; i < int16_t(HEIGHT); i++)
+  {
+    for (int16_t j = 0; j < int16_t(WIDTH); j += 8)
+    {
+      uint8_t black_data = 0xFF, color_data = 0xFF;
+      if ((j >= x1) && (j < x1 + w) && (i >= y1) && (i < y1 + h))
+      {
+        // use wb_bitmap, h_bitmap of bitmap for index!
+        uint32_t idx = mirror_y ? (x_part + j - x1) / 8 + uint32_t((h_bitmap - 1 - (y_part + i - y1))) * wb_bitmap : (x_part + j - x1) / 8 + uint32_t(y_part + i - y1) * wb_bitmap;
+        if (pgm)
+        {
+#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
+          black_data = pgm_read_byte(&black[idx]);
+          color_data = pgm_read_byte(&color[idx]);
+#else
+          black_data = black[idx];
+          color_data = color[idx];
+#endif
+        }
+        else
+        {
+          black_data = black[idx];
+          color_data = color[idx];
+        }
+        if (invert)
+        {
+          black_data = ~black_data;
+          color_data = ~color_data;
+        }
+      }
+      for (int16_t k = 0; k < 2; k++)
+      {
+        uint8_t out_data = 0x00;
+        for (int16_t l = 0; l < 4; l++)
+        {
+          out_data <<= 2;
+          if (!(color_data & 0x80)) out_data |= 0x03; // red
+          else out_data |= black_data & 0x80 ? 0x01 : 0x00; // white or black
+          black_data <<= 1;
+          color_data <<= 1;
+        }
+        _transfer(out_data);
+      }
+    }
+  }
+  _endTransfer();
+  delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+}
+
+void GxEPD2_437c::writeNative(const uint8_t* data1, const uint8_t* data2, int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+{
+  if (data1)
+  {
+    //Serial.print("writeNative("); Serial.print(x); Serial.print(", "); Serial.print(y); Serial.print(", ");
+    //Serial.print(w); Serial.print(", "); Serial.print(h); Serial.println(")");
+    delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+    if (_paged && (x == 0) && (w == int16_t(WIDTH)) && (h < int16_t(HEIGHT)))
+    {
+      //Serial.println("paged");
+      _startTransfer();
+      for (uint32_t i = 0; i < uint32_t(WIDTH) * uint32_t(h) / 4; i++)
+      {
+        uint8_t data = data1[i];
+        _transfer(data);
+      }
+      _endTransfer();
+      if (y + h == HEIGHT) // last page
+      {
+        //Serial.println("paged ended");
+        _paged = false;
+      }
+    }
+    else
+    {
+      _paged = false;
+      int16_t wb = (w + 3) / 4; // width bytes, bitmaps are padded
+      x -= x % 4; // byte boundary
+      w = wb * 4; // byte boundary
+      if ((w <= 0) || (h <= 0)) return;
+      _Init_Full();
+      _writeCommand(0x10);
+      _startTransfer();
+      for (int16_t i = 0; i < int16_t(HEIGHT); i++)
+      {
+        for (int16_t j = 0; j < int16_t(WIDTH); j += 4)
+        {
+          uint8_t data = 0x55;
+          if (data1)
+          {
+            if ((j >= x) && (j < x + w) && (i >= y) && (i < y + h))
+            {
+              uint32_t idx = mirror_y ? (j - x) / 4 + uint32_t((h - 1 - (i - y))) * wb : (j - x) / 4 + uint32_t(i - y) * wb;
+              if (pgm)
+              {
+#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
+                data = pgm_read_byte(&data1[idx]);
+#else
+                data = data1[idx];
+#endif
+              }
+              else
+              {
+                data = data1[idx];
+              }
+              if (invert) data = ~data;
+            }
+          }
+          _transfer(data);
+        }
+      }
+      _endTransfer();
+    }
+    delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+  }
+}
+
+void GxEPD2_437c::writeNativePart(const uint8_t* data1, const uint8_t* data2, int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                                  int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+{
+  //Serial.print("writeNativePart("); Serial.print(x_part); Serial.print(", "); Serial.print(y_part); Serial.print(", ");
+  //Serial.print(w_bitmap); Serial.print(", "); Serial.print(h_bitmap); Serial.print(", ");
+  //Serial.print(x); Serial.print(", "); Serial.print(y); Serial.print(", ");
+  //Serial.print(w); Serial.print(", "); Serial.print(h); Serial.println(")");
+  if (!data1) return;
+  delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+  if ((w_bitmap < 0) || (h_bitmap < 0) || (w < 0) || (h < 0)) return;
+  if ((x_part < 0) || (x_part >= w_bitmap)) return;
+  if ((y_part < 0) || (y_part >= h_bitmap)) return;
+  int16_t wb_bitmap = (w_bitmap + 1) / 2; // width bytes, bitmaps are padded
+  x_part -= x_part % 2; // byte boundary
+  w = w_bitmap - x_part < w ? w_bitmap - x_part : w; // limit
+  h = h_bitmap - y_part < h ? h_bitmap - y_part : h; // limit
+  x -= x % 4; // byte boundary
+  w = 4 * ((w + 1) / 4); // byte boundary, bitmaps are padded
+  int16_t x1 = x < 0 ? 0 : x; // limit
+  int16_t y1 = y < 0 ? 0 : y; // limit
+  int16_t w1 = x + w < int16_t(WIDTH) ? w : int16_t(WIDTH) - x; // limit
+  int16_t h1 = y + h < int16_t(HEIGHT) ? h : int16_t(HEIGHT) - y; // limit
+  int16_t dx = x1 - x;
+  int16_t dy = y1 - y;
+  w1 -= dx;
+  h1 -= dy;
+  if ((w1 <= 0) || (h1 <= 0)) return;
+  _Init_Full();
+  _writeCommand(0x10);
+  _startTransfer();
+  for (int16_t i = 0; i < int16_t(HEIGHT); i++)
+  {
+    for (int16_t j = 0; j < int16_t(WIDTH); j += 4)
+    {
+      uint8_t data = 0x55;
+      if ((j >= x1) && (j < x1 + w) && (i >= y1) && (i < y1 + h))
+      {
+        // use wb_bitmap, h_bitmap of bitmap for index!
+        uint32_t idx = mirror_y ? (x_part + j - x1) / 4 + uint32_t((h_bitmap - 1 - (y_part + i - y1))) * wb_bitmap : (x_part + j - x1) / 4 + uint32_t(y_part + i - y1) * wb_bitmap;
+        if (pgm)
+        {
+#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
+          data = pgm_read_byte(&data1[idx]);
+#else
+          data = data1[idx];
+#endif
+        }
+        else
+        {
+          data = data1[idx];
+        }
+        if (invert) data = ~data;
+      }
+      _transfer(data);
+    }
+  }
+  _endTransfer();
+  delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+}
+
+void GxEPD2_437c::drawImage(const uint8_t bitmap[], int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+{
+  writeImage(bitmap, x, y, w, h, invert, mirror_y, pgm);
+  refresh(x, y, w, h);
+}
+
+void GxEPD2_437c::drawImagePart(const uint8_t bitmap[], int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                                int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+{
+  writeImagePart(bitmap, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
+  refresh(x, y, w, h);
+}
+
+void GxEPD2_437c::drawImage(const uint8_t* black, const uint8_t* color, int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+{
+  writeImage(black, color, x, y, w, h, invert, mirror_y, pgm);
+  refresh(x, y, w, h);
+}
+
+void GxEPD2_437c::drawImagePart(const uint8_t* black, const uint8_t* color, int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                                int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+{
+  writeImagePart(black, color, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
+  refresh(x, y, w, h);
+}
+
+void GxEPD2_437c::drawNative(const uint8_t* data1, const uint8_t* data2, int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
+{
+  writeNative(data1, data2, x, y, w, h, invert, mirror_y, pgm);
+  refresh(x, y, w, h);
+}
+
+void GxEPD2_437c::refresh(bool partial_update_mode)
+{
+  if (partial_update_mode) refresh(0, 0, WIDTH, HEIGHT);
+  else _Update_Full();
+}
+
+void GxEPD2_437c::refresh(int16_t x, int16_t y, int16_t w, int16_t h)
+{
+  _Update_Part();
+}
+
+void GxEPD2_437c::powerOff()
+{
+  _PowerOff();
+}
+
+void GxEPD2_437c::hibernate()
+{
+  _PowerOff();
+  if (_rst >= 0)
+  {
+    _writeCommand(0x07); // deep sleep
+    _writeData(0xA5);    // control code
+    _hibernating = true;
+  }
+}
+
+void GxEPD2_437c::setPaged()
+{
+  _paged = true;
+  _Init_Full();
+  _writeCommand(0x10);
+}
+
+void GxEPD2_437c::_PowerOn()
+{
+  if (!_power_is_on)
+  {
+    _writeCommand(0x04);
+    _waitWhileBusy("_PowerOn", power_on_time);
+  }
+  _power_is_on = true;
+}
+
+void GxEPD2_437c::_PowerOff()
+{
+  if (_power_is_on)
+  {
+    _writeCommand(0x02);
+    _writeData(0x00);
+    _waitWhileBusy("_PowerOff", power_off_time);
+  }
+  _power_is_on = false;
+  _using_partial_mode = false;
+}
+
+void GxEPD2_437c::_InitDisplay()
+{
+  if (_hibernating)
+  {
+    _reset();
+    delay(20);
+    _reset();
+  }
+  if (_initial_write) delay(20);
+  _writeCommand(0xAA); // CMDH
+  _writeData(0x49);
+  _writeData(0x55);
+  _writeData(0x20);
+  _writeData(0x08);
+  _writeData(0x09);
+  _writeData(0x18);
+  _writeCommand(0x01); // Power Settings
+  _writeData(0x3F);
+  _writeCommand(0x00); // Panel Settings
+  _writeData(0x4F);
+  _writeData(0x69);
+  _writeCommand(0x05); // BTST1
+  _writeData(0x40);
+  _writeData(0x1F);
+  _writeData(0x1F);
+  _writeData(0x2C);
+  _writeCommand(0x08); // BTST3
+  _writeData(0x6F);
+  _writeData(0x1F);
+  _writeData(0x1F);
+  _writeData(0x22);
+  _writeCommand(0x06); // Booster Soft Start
+  _writeData(0x6F);
+  _writeData(0x1F);
+  _writeData(0x17);
+  _writeData(0x17);
+  _writeCommand(0x03); // Power Off Sequence
+  _writeData(0x00);
+  _writeData(0x54);
+  _writeData(0x00);
+  _writeData(0x44);
+  _writeCommand(0x50); // VCOM and Data Interval Setting
+  _writeData(0x3F);    // white border
+  _writeCommand(0x60); // TCON
+  _writeData(0x02);
+  _writeData(0x00);
+  _writeCommand(0x30); // PLL Control
+  _writeData(0x08);
+  _writeCommand(0x61); // Resolution Setting
+  _writeData(0x02);
+  _writeData(0x00);
+  _writeData(0x01);
+  _writeData(0x70);
+  _writeCommand(0xE3); // PWS
+  _writeData(0x2F);
+  _writeCommand(0x84); // T_VDCS
+  _writeData(0x01);
+}
+
+void GxEPD2_437c::_Init_Full()
+{
+  _InitDisplay();
+  _PowerOn();
+}
+
+void GxEPD2_437c::_Init_Part()
+{
+  _InitDisplay();
+  _PowerOn();
+}
+
+void GxEPD2_437c::_Update_Full()
+{
+  _writeCommand(0x12); // Display Refresh
+  _writeData(0x01);
+  delay(1);
+  _waitWhileBusy("_Update_Full", full_refresh_time);
+}
+
+void GxEPD2_437c::_Update_Part()
+{
+  _writeCommand(0x12); // Display Refresh
+  _writeData(0x01);
+  delay(1);
+  _waitWhileBusy("_Update_Part", partial_refresh_time);
+}

src/epd4c/GxEPD2_437c.h

@@ -0,0 +1,79 @@
+// Display Library for SPI e-paper panels from Dalian Good Display and boards from Waveshare.
+// Requires HW SPI and Adafruit_GFX. Caution: the e-paper panels require 3.3V supply AND data lines!
+//
+// based on Demo Example from Waveshare: https://github.com/waveshare/e-Paper/tree/master/Arduino/epd4in37g
+// Panel: 4.37inch 4-Color E-Paper : https://www.waveshare.com/product/displays/e-paper/4.37inch-e-paper-module-g.htm
+// Controller: unknown
+//
+// Author: Jean-Marc Zingg
+//
+// Version: see library.properties
+//
+// Library: https://github.com/ZinggJM/GxEPD2
+
+#ifndef _GxEPD2_437c_H_
+#define _GxEPD2_437c_H_
+
+#include "../GxEPD2_EPD.h"
+
+class GxEPD2_437c : public GxEPD2_EPD
+{
+  public:
+    // attributes
+    static const uint16_t WIDTH = 512;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
+    static const uint16_t HEIGHT = 368;
+    static const GxEPD2::Panel panel = GxEPD2::Waveshare437inch4color;
+    static const bool hasColor = true;
+    static const bool hasPartialUpdate = false;
+    static const bool hasFastPartialUpdate = false;
+    static const uint16_t power_on_time = 200; // ms, e.g. 172000us
+    static const uint16_t power_off_time = 150; // ms, e.g. 140000us
+    static const uint16_t full_refresh_time = 12000; // ms, e.g. 12709000us
+    static const uint16_t partial_refresh_time = 13000; // ms, e.g. 12709000us
+    // constructor
+    GxEPD2_437c(int16_t cs, int16_t dc, int16_t rst, int16_t busy);
+    // methods (virtual)
+    //  Support for Bitmaps (Sprites) to Controller Buffer and to Screen
+    void clearScreen(uint8_t value = 0xFF); // init controller memory and screen (default white)
+    void clearScreen(uint8_t black_value, uint8_t color_value); // init controller memory and screen
+    void writeScreenBuffer(uint8_t value = 0xFF); // init controller memory (default white)
+    void writeScreenBuffer(uint8_t black_value, uint8_t color_value); // init controller memory
+    // write to controller memory, without screen refresh; x and w should be multiple of 8
+    void writeImage(const uint8_t bitmap[], int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false);
+    void writeImagePart(const uint8_t bitmap[], int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                        int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false);
+    void writeImage(const uint8_t* black, const uint8_t* color, int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false);
+    void writeImagePart(const uint8_t* black, const uint8_t* color, int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                        int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false);
+    // write sprite of native data to controller memory, without screen refresh; x and w should be multiple of 8
+    void writeNative(const uint8_t* data1, const uint8_t* data2, int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false);
+    void writeNativePart(const uint8_t* data1, const uint8_t* data2, int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                        int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false);
+    // write to controller memory, with screen refresh; x and w should be multiple of 8
+    void drawImage(const uint8_t bitmap[], int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false);
+    void drawImagePart(const uint8_t bitmap[], int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                       int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false);
+    void drawImage(const uint8_t* black, const uint8_t* color, int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false);
+    void drawImagePart(const uint8_t* black, const uint8_t* color, int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
+                       int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false);
+    // write sprite of native data to controller memory, with screen refresh; x and w should be multiple of 8
+    void drawNative(const uint8_t* data1, const uint8_t* data2, int16_t x, int16_t y, int16_t w, int16_t h, bool invert = false, bool mirror_y = false, bool pgm = false);
+    void refresh(bool partial_update_mode = false); // screen refresh from controller memory to full screen
+    void refresh(int16_t x, int16_t y, int16_t w, int16_t h); // screen refresh from controller memory, partial screen
+    void powerOff(); // turns off generation of panel driving voltages, avoids screen fading over time
+    void hibernate(); // turns powerOff() and sets controller to deep sleep for minimum power use, ONLY if wakeable by RST (rst >= 0)
+    void setPaged(); // for GxEPD2_154c and GxEPD2_437c paged workaround
+  private:
+    void _PowerOn();
+    void _PowerOff();
+    void _InitDisplay();
+    void _Init_Full();
+    void _Init_Part();
+    void _Update_Full();
+    void _Update_Part();
+  private:
+    bool _paged;
+};
+
+#endif

src/gdeq/GxEPD2_583_GDEQ0583T31.h

@@ -21,6 +21,7 @@ class GxEPD2_583_GDEQ0583T31 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 648;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 480;
     static const GxEPD2::Panel panel = GxEPD2::GDEQ0583T31;
     static const bool hasColor = false;

src/gdey/GxEPD2_154_GDEY0154D67.h

@@ -21,6 +21,7 @@ class GxEPD2_154_GDEY0154D67 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 200;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 200;
     static const GxEPD2::Panel panel = GxEPD2::GDEY0154D67;
     static const bool hasColor = false;

src/gdey/GxEPD2_213_GDEY0213B74.h

@@ -21,6 +21,7 @@ class GxEPD2_213_GDEY0213B74 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 250;
     static const GxEPD2::Panel panel = GxEPD2::GDEY0213B74;
     static const bool hasColor = false;

src/gdey/GxEPD2_266_GDEY0266T90.h

@@ -21,6 +21,7 @@ class GxEPD2_266_GDEY0266T90 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 152;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 296;
     static const GxEPD2::Panel panel = GxEPD2::GDEY0266T90;
     static const bool hasColor = false;

src/gdey/GxEPD2_270_GDEY027T91.h

@@ -21,6 +21,7 @@ class GxEPD2_270_GDEY027T91 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 176;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 264;
     static const GxEPD2::Panel panel = GxEPD2::GDEY027T91;
     static const bool hasColor = false;

src/gdey/GxEPD2_290_GDEY029T94.h

@@ -21,6 +21,7 @@ class GxEPD2_290_GDEY029T94 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 128;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 296;
     static const GxEPD2::Panel panel = GxEPD2::GDEY029T94;
     static const bool hasColor = false;

src/gdey/GxEPD2_420_GDEY042T91.h

@@ -21,6 +21,7 @@ class GxEPD2_420_GDEY042T91 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 400;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 300;
     static const GxEPD2::Panel panel = GxEPD2::GDEY042T91;
     static const bool hasColor = false;

src/it8951/GxEPD2_it103_1872x1404.h

@@ -24,6 +24,7 @@ class GxEPD2_it103_1872x1404 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 1872;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 1404;
     static const GxEPD2::Panel panel = GxEPD2::ES103TC1;
     static const bool hasColor = false;

src/it8951/GxEPD2_it60.h

@@ -24,6 +24,7 @@ class GxEPD2_it60 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 800;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 600;
     static const GxEPD2::Panel panel = GxEPD2::ED060SCT;
     static const bool hasColor = false;

src/it8951/GxEPD2_it60_1448x1072.h

@@ -24,6 +24,7 @@ class GxEPD2_it60_1448x1072 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 1448;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 1072;
     static const GxEPD2::Panel panel = GxEPD2::ED060KC1;
     static const bool hasColor = false;

src/it8951/GxEPD2_it78_1872x1404.h

@@ -24,6 +24,7 @@ class GxEPD2_it78_1872x1404 : public GxEPD2_EPD
   public:
     // attributes
     static const uint16_t WIDTH = 1872;
+    static const uint16_t WIDTH_VISIBLE = WIDTH;
     static const uint16_t HEIGHT = 1404;
     static const GxEPD2::Panel panel = GxEPD2::ED078KC2;
     static const bool hasColor = false;