Version 1.3.1

- added support for GDEM029C90 128x296 b/w/y e-paper panel
- GDEM029C90 has a very long refresh time of about 27 seconds
- GDEM029C90 has partial update (window addressing) of controller memory
- GDEM029C90 supports only full refresh of screen

README.md

@@ -69,6 +69,7 @@
 - GDEM029T94     2.9" b/w
 - GDEW029M06     2.9" b/w DES
 - GDEW029Z10     2.9" b/w/r
+- GDEM029C90     2.9" b/w/y
 - GDEW026T0      2.6" b/w
 - GDEW026M01     2.6" b/w DES
 - GDEW027C44     2.7" b/w/r
@@ -95,7 +96,12 @@
 - promotion panels from suppliers are welcome, to add support to GxEPD2
 - donation panels from users are welcome, to add support to GxEPD2
 
-### Version 1.3.0
+### Version 1.3.1
+- added support for GDEM029C90 128x296 b/w/y e-paper panel
+- GDEM029C90 has a very long refresh time of about 27 seconds
+- GDEM029C90 has partial update (window addressing) of controller memory
+- GDEM029C90 supports only full refresh of screen
+#### Version 1.3.0
 - added support for GDEM029T94 128x296 b/w e-paper panel
 - added support for GDEW026M01 152x296 b/w new DES e-paper panel
 - the new GDEW026M01 DES b/w e-paper panel has higher contrast and wide temperature range

examples/GxEPD2_Example/GxEPD2_Example.ino

@@ -1294,7 +1294,7 @@ void drawBitmaps3c128x296()
     {WS_Bitmap3c128x296_black, WS_Bitmap3c128x296_red}
   };
 #endif
-  if (display.epd2.panel == GxEPD2::GDEW029Z10)
+  if ((display.epd2.WIDTH == 128) && (display.epd2.HEIGHT == 296) && display.epd2.hasColor)
   {
     for (uint16_t i = 0; i < sizeof(bitmap_pairs) / sizeof(bitmap_pair); i++)
     {
@@ -1302,12 +1302,12 @@ void drawBitmaps3c128x296()
       do
       {
         display.fillScreen(GxEPD_WHITE);
-        display.drawInvertedBitmap(0, 0, bitmap_pairs[i].black, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
+        display.drawInvertedBitmap(0, 0, bitmap_pairs[i].black, 128, 296, GxEPD_BLACK);
         if (bitmap_pairs[i].red == WS_Bitmap3c128x296_red)
         {
-          display.drawInvertedBitmap(0, 0, bitmap_pairs[i].red, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_RED);
+          display.drawInvertedBitmap(0, 0, bitmap_pairs[i].red, 128, 296, GxEPD_RED);
         }
-        else display.drawBitmap(0, 0, bitmap_pairs[i].red, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_RED);
+        else display.drawBitmap(0, 0, bitmap_pairs[i].red, 128, 296, GxEPD_RED);
       }
       while (display.nextPage());
       delay(2000);

examples/GxEPD2_Example/GxEPD2_display_selection.h

@@ -45,6 +45,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW029Z10
+//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
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW027C44
 // 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
@@ -94,6 +95,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW029Z10
+//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
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW027C44
 // 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
@@ -137,6 +139,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW029Z10
+//GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW027C44
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW042Z15
 //GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0583Z21
@@ -195,6 +198,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, MAX_HEIGHT_3C(GxEPD2_154_Z90c)> display(GxEPD2_154_Z90c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW029Z10
+//GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW027C44
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW042Z15
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW0583Z21
@@ -207,52 +211,53 @@
 #endif
 
 #if defined(__AVR)
-#if defined (ARDUINO_AVR_MEGA2560)
+#if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
 #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
-#else
-#define MAX_DISPLAY_BUFFER_SIZE 800 // 
+#else // Note: SS is on 10 on UNO, NANO
+#define MAX_DISPLAY_BUFFER_SIZE 800
 #endif
 #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=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEP015OC1 no longer available
-//GxEPD2_BW<GxEPD2_154_D67, MAX_HEIGHT(GxEPD2_154_D67)> display(GxEPD2_154_D67(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154D67
-//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
-//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
-//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
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1, 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
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73
-//GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F
-//GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21
-//GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH029A1
-//GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029T5
-//GxEPD2_BW<GxEPD2_290_T94, MAX_HEIGHT(GxEPD2_290_T94)> display(GxEPD2_290_T94(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029T94
-//GxEPD2_BW<GxEPD2_290_M06, MAX_HEIGHT(GxEPD2_290_M06)> display(GxEPD2_290_M06(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029M06
-//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0
-//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01
-//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3
-//GxEPD2_BW<GxEPD2_371, MAX_HEIGHT(GxEPD2_371)> display(GxEPD2_371(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0371W7
-//GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042T2
-//GxEPD2_BW<GxEPD2_420_M01, MAX_HEIGHT(GxEPD2_420_M01)> display(GxEPD2_420_M01(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042M01
-//GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T7
-//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
-//GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075T8   640x384
-//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
+//GxEPD2_BW<GxEPD2_154, MAX_HEIGHT(GxEPD2_154)> display(GxEPD2_154(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEP015OC1 no longer available
+//GxEPD2_BW<GxEPD2_154_D67, MAX_HEIGHT(GxEPD2_154_D67)> display(GxEPD2_154_D67(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154D67
+//GxEPD2_BW<GxEPD2_154_T8, MAX_HEIGHT(GxEPD2_154_T8)> display(GxEPD2_154_T8(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154T8 152x152
+//GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200
+//GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1, 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
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73
+//GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F
+//GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21
+//GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH029A1
+//GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029T5
+//GxEPD2_BW<GxEPD2_290_T94, MAX_HEIGHT(GxEPD2_290_T94)> display(GxEPD2_290_T94(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029T94
+//GxEPD2_BW<GxEPD2_290_M06, MAX_HEIGHT(GxEPD2_290_M06)> display(GxEPD2_290_M06(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029M06
+//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0
+//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01
+//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3
+//GxEPD2_BW<GxEPD2_371, MAX_HEIGHT(GxEPD2_371)> display(GxEPD2_371(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0371W7
+//GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042T2
+//GxEPD2_BW<GxEPD2_420_M01, MAX_HEIGHT(GxEPD2_420_M01)> display(GxEPD2_420_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042M01
+//GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T7
+//GxEPD2_BW <GxEPD2_583_T8,  MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T8  648x480
+//GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075T8   640x384
+//GxEPD2_BW<GxEPD2_750_T7, MAX_HEIGHT(GxEPD2_750_T7)> display(GxEPD2_750_T7(/*CS=*/ SS, /*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*/ SS, /*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*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154Z90
-//GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213Z16
-//GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029Z10
-//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027C44
-//GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042Z15
-//GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583Z21
-//GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09
-//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
-//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
+//GxEPD2_3C<GxEPD2_154c, MAX_HEIGHT_3C(GxEPD2_154c)> display(GxEPD2_154c(/*CS=*/ SS, /*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=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154Z90
+//GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213Z16
+//GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029Z10
+//GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029C90
+//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027C44
+//GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042Z15
+//GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583Z21
+//GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09
+//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
+//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
 // 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_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
 
 // ***** 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
@@ -290,6 +295,7 @@
 //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)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW029Z10
+//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
 //GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW027C44
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW042Z15
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0583Z21

examples/GxEPD2_Example/GxEPD2_display_selection_added.h

@@ -50,6 +50,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, MAX_HEIGHT_3C(GxEPD2_154_Z90c)> display(GxEPD2_154_Z90c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+//GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
@@ -104,6 +105,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, MAX_HEIGHT_3C(GxEPD2_154_Z90c)> display(GxEPD2_154_Z90c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
+//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
 //GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
@@ -153,6 +155,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
+//GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
 //GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
@@ -201,6 +204,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
+//GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
 //GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
@@ -251,6 +255,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16));
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16));
+//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
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16));
 // 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));

examples/GxEPD2_Example/GxEPD2_display_selection_new_style.h

@@ -48,10 +48,11 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212
 //#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296
 //#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264
 //#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300
 //#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  600x384
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  640x384
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248     // GDEW1248T3  1303x984
@@ -139,9 +140,9 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 
 #if defined(__AVR)
-#if defined (ARDUINO_AVR_MEGA2560)
+#if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
 #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
-#else
+#else // Note: SS is on 10 on UNO, NANO
 #define MAX_DISPLAY_BUFFER_SIZE 800 // 
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
@@ -152,7 +153,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #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=10*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 #endif
 
 #if defined(ARDUINO_ARCH_SAM)

examples/GxEPD2_GFX_Example/GxEPD2_display_selection.h

@@ -45,6 +45,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW029Z10
+//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
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW027C44
 // 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
@@ -94,6 +95,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW029Z10
+//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
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW027C44
 // 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
@@ -137,6 +139,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW029Z10
+//GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW027C44
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW042Z15
 //GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0583Z21
@@ -195,6 +198,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, MAX_HEIGHT_3C(GxEPD2_154_Z90c)> display(GxEPD2_154_Z90c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW029Z10
+//GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW027C44
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW042Z15
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW0583Z21
@@ -207,52 +211,53 @@
 #endif
 
 #if defined(__AVR)
-#if defined (ARDUINO_AVR_MEGA2560)
+#if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
 #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
-#else
-#define MAX_DISPLAY_BUFFER_SIZE 800 // 
+#else // Note: SS is on 10 on UNO, NANO
+#define MAX_DISPLAY_BUFFER_SIZE 800
 #endif
 #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=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEP015OC1 no longer available
-//GxEPD2_BW<GxEPD2_154_D67, MAX_HEIGHT(GxEPD2_154_D67)> display(GxEPD2_154_D67(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154D67
-//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
-//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
-//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
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1, 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
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73
-//GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F
-//GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21
-//GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH029A1
-//GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029T5
-//GxEPD2_BW<GxEPD2_290_T94, MAX_HEIGHT(GxEPD2_290_T94)> display(GxEPD2_290_T94(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029T94
-//GxEPD2_BW<GxEPD2_290_M06, MAX_HEIGHT(GxEPD2_290_M06)> display(GxEPD2_290_M06(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029M06
-//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0
-//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01
-//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3
-//GxEPD2_BW<GxEPD2_371, MAX_HEIGHT(GxEPD2_371)> display(GxEPD2_371(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0371W7
-//GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042T2
-//GxEPD2_BW<GxEPD2_420_M01, MAX_HEIGHT(GxEPD2_420_M01)> display(GxEPD2_420_M01(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042M01
-//GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T7
-//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
-//GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075T8   640x384
-//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
+//GxEPD2_BW<GxEPD2_154, MAX_HEIGHT(GxEPD2_154)> display(GxEPD2_154(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEP015OC1 no longer available
+//GxEPD2_BW<GxEPD2_154_D67, MAX_HEIGHT(GxEPD2_154_D67)> display(GxEPD2_154_D67(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154D67
+//GxEPD2_BW<GxEPD2_154_T8, MAX_HEIGHT(GxEPD2_154_T8)> display(GxEPD2_154_T8(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154T8 152x152
+//GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200
+//GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1, 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
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73
+//GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F
+//GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21
+//GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH029A1
+//GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029T5
+//GxEPD2_BW<GxEPD2_290_T94, MAX_HEIGHT(GxEPD2_290_T94)> display(GxEPD2_290_T94(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029T94
+//GxEPD2_BW<GxEPD2_290_M06, MAX_HEIGHT(GxEPD2_290_M06)> display(GxEPD2_290_M06(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029M06
+//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0
+//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01
+//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3
+//GxEPD2_BW<GxEPD2_371, MAX_HEIGHT(GxEPD2_371)> display(GxEPD2_371(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0371W7
+//GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042T2
+//GxEPD2_BW<GxEPD2_420_M01, MAX_HEIGHT(GxEPD2_420_M01)> display(GxEPD2_420_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042M01
+//GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T7
+//GxEPD2_BW <GxEPD2_583_T8,  MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T8  648x480
+//GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075T8   640x384
+//GxEPD2_BW<GxEPD2_750_T7, MAX_HEIGHT(GxEPD2_750_T7)> display(GxEPD2_750_T7(/*CS=*/ SS, /*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*/ SS, /*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*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154Z90
-//GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213Z16
-//GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029Z10
-//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027C44
-//GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042Z15
-//GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583Z21
-//GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09
-//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
-//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
+//GxEPD2_3C<GxEPD2_154c, MAX_HEIGHT_3C(GxEPD2_154c)> display(GxEPD2_154c(/*CS=*/ SS, /*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=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154Z90
+//GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213Z16
+//GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029Z10
+//GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029C90
+//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027C44
+//GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042Z15
+//GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583Z21
+//GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09
+//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
+//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
 // 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_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
 
 // ***** 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
@@ -290,6 +295,7 @@
 //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)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW029Z10
+//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
 //GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW027C44
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW042Z15
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0583Z21

examples/GxEPD2_GFX_Example/GxEPD2_display_selection_added.h

@@ -50,6 +50,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, MAX_HEIGHT_3C(GxEPD2_154_Z90c)> display(GxEPD2_154_Z90c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+//GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
@@ -104,6 +105,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, MAX_HEIGHT_3C(GxEPD2_154_Z90c)> display(GxEPD2_154_Z90c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
+//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
 //GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
@@ -153,6 +155,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
+//GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
 //GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
@@ -201,6 +204,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
+//GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
 //GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
@@ -251,6 +255,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16));
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16));
+//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
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16));
 // 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));

examples/GxEPD2_GFX_Example/GxEPD2_display_selection_new_style.h

@@ -48,10 +48,11 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212
 //#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296
 //#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264
 //#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300
 //#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  600x384
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  640x384
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248     // GDEW1248T3  1303x984
@@ -139,9 +140,9 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 
 #if defined(__AVR)
-#if defined (ARDUINO_AVR_MEGA2560)
+#if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
 #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
-#else
+#else // Note: SS is on 10 on UNO, NANO
 #define MAX_DISPLAY_BUFFER_SIZE 800 // 
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
@@ -152,7 +153,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #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=10*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 #endif
 
 #if defined(ARDUINO_ARCH_SAM)

examples/GxEPD2_HelloWorld/GxEPD2_display_selection.h

@@ -45,6 +45,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW029Z10
+//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
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEW027C44
 // 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
@@ -94,6 +95,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW029Z10
+//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
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=2*/ 2, /*BUSY=5*/ 5)); // GDEW027C44
 // 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
@@ -137,6 +139,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW029Z10
+//GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW027C44
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW042Z15
 //GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=5*/ SS, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4)); // GDEW0583Z21
@@ -195,6 +198,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, MAX_HEIGHT_3C(GxEPD2_154_Z90c)> display(GxEPD2_154_Z90c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW029Z10
+//GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW027C44
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW042Z15
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=4*/ SS, /*DC=*/ 3, /*RST=*/ 2, /*BUSY=*/ 1)); // GDEW0583Z21
@@ -207,52 +211,53 @@
 #endif
 
 #if defined(__AVR)
-#if defined (ARDUINO_AVR_MEGA2560)
+#if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
 #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
-#else
-#define MAX_DISPLAY_BUFFER_SIZE 800 // 
+#else // Note: SS is on 10 on UNO, NANO
+#define MAX_DISPLAY_BUFFER_SIZE 800
 #endif
 #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=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEP015OC1 no longer available
-//GxEPD2_BW<GxEPD2_154_D67, MAX_HEIGHT(GxEPD2_154_D67)> display(GxEPD2_154_D67(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154D67
-//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
-//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
-//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
-//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1, 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
-//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73
-//GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F
-//GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21
-//GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH029A1
-//GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029T5
-//GxEPD2_BW<GxEPD2_290_T94, MAX_HEIGHT(GxEPD2_290_T94)> display(GxEPD2_290_T94(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029T94
-//GxEPD2_BW<GxEPD2_290_M06, MAX_HEIGHT(GxEPD2_290_M06)> display(GxEPD2_290_M06(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029M06
-//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0
-//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01
-//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3
-//GxEPD2_BW<GxEPD2_371, MAX_HEIGHT(GxEPD2_371)> display(GxEPD2_371(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0371W7
-//GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042T2
-//GxEPD2_BW<GxEPD2_420_M01, MAX_HEIGHT(GxEPD2_420_M01)> display(GxEPD2_420_M01(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042M01
-//GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T7
-//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
-//GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075T8   640x384
-//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
+//GxEPD2_BW<GxEPD2_154, MAX_HEIGHT(GxEPD2_154)> display(GxEPD2_154(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEP015OC1 no longer available
+//GxEPD2_BW<GxEPD2_154_D67, MAX_HEIGHT(GxEPD2_154_D67)> display(GxEPD2_154_D67(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154D67
+//GxEPD2_BW<GxEPD2_154_T8, MAX_HEIGHT(GxEPD2_154_T8)> display(GxEPD2_154_T8(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154T8 152x152
+//GxEPD2_BW<GxEPD2_154_M09, MAX_HEIGHT(GxEPD2_154_M09)> display(GxEPD2_154_M09(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M09 200x200
+//GxEPD2_BW<GxEPD2_154_M10, MAX_HEIGHT(GxEPD2_154_M10)> display(GxEPD2_154_M10(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0154M10 152x152
+//GxEPD2_BW<GxEPD2_213, MAX_HEIGHT(GxEPD2_213)> display(GxEPD2_213(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDE0213B1, 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
+//GxEPD2_BW<GxEPD2_213_B73, MAX_HEIGHT(GxEPD2_213_B73)> display(GxEPD2_213_B73(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0213B73
+//GxEPD2_BW<GxEPD2_213_flex, MAX_HEIGHT(GxEPD2_213_flex)> display(GxEPD2_213_flex(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213I5F
+//GxEPD2_BW<GxEPD2_213_M21, MAX_HEIGHT(GxEPD2_213_M21)> display(GxEPD2_213_M21(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213M21
+//GxEPD2_BW<GxEPD2_290, MAX_HEIGHT(GxEPD2_290)> display(GxEPD2_290(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH029A1
+//GxEPD2_BW<GxEPD2_290_T5, MAX_HEIGHT(GxEPD2_290_T5)> display(GxEPD2_290_T5(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029T5
+//GxEPD2_BW<GxEPD2_290_T94, MAX_HEIGHT(GxEPD2_290_T94)> display(GxEPD2_290_T94(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029T94
+//GxEPD2_BW<GxEPD2_290_M06, MAX_HEIGHT(GxEPD2_290_M06)> display(GxEPD2_290_M06(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029M06
+//GxEPD2_BW<GxEPD2_260, MAX_HEIGHT(GxEPD2_260)> display(GxEPD2_260(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026T0
+//GxEPD2_BW<GxEPD2_260_M01, MAX_HEIGHT(GxEPD2_260_M01)> display(GxEPD2_260_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW026M01
+//GxEPD2_BW<GxEPD2_270, MAX_HEIGHT(GxEPD2_270)> display(GxEPD2_270(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027W3
+//GxEPD2_BW<GxEPD2_371, MAX_HEIGHT(GxEPD2_371)> display(GxEPD2_371(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0371W7
+//GxEPD2_BW<GxEPD2_420, MAX_HEIGHT(GxEPD2_420)> display(GxEPD2_420(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042T2
+//GxEPD2_BW<GxEPD2_420_M01, MAX_HEIGHT(GxEPD2_420_M01)> display(GxEPD2_420_M01(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042M01
+//GxEPD2_BW<GxEPD2_583, MAX_HEIGHT(GxEPD2_583)> display(GxEPD2_583(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T7
+//GxEPD2_BW <GxEPD2_583_T8,  MAX_HEIGHT(GxEPD2_583_T8)> display(GxEPD2_583_T8(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583T8  648x480
+//GxEPD2_BW<GxEPD2_750, MAX_HEIGHT(GxEPD2_750)> display(GxEPD2_750(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075T8   640x384
+//GxEPD2_BW<GxEPD2_750_T7, MAX_HEIGHT(GxEPD2_750_T7)> display(GxEPD2_750_T7(/*CS=*/ SS, /*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*/ SS, /*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*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154Z90
-//GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213Z16
-//GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029Z10
-//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027C44
-//GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042Z15
-//GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583Z21
-//GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09
-//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
-//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
+//GxEPD2_3C<GxEPD2_154c, MAX_HEIGHT_3C(GxEPD2_154c)> display(GxEPD2_154c(/*CS=*/ SS, /*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=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154Z90
+//GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0213Z16
+//GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW029Z10
+//GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029C90
+//GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW027C44
+//GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW042Z15
+//GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW0583Z21
+//GxEPD2_3C<GxEPD2_750c, MAX_HEIGHT_3C(GxEPD2_750c)> display(GxEPD2_750c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEW075Z09
+//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
+//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
 // 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_565c, MAX_HEIGHT_7C(GxEPD2_565c)> display(GxEPD2_565c(/*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // Waveshare 5.65" 7-color
 
 // ***** 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
@@ -290,6 +295,7 @@
 //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)); // GDEW0213Z16
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW029Z10
+//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
 //GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW027C44
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW042Z15
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=10*/ SS, /*DC=*/ 9, /*RST=*/ 8, /*BUSY=*/ 7)); // GDEW0583Z21

examples/GxEPD2_HelloWorld/GxEPD2_display_selection_added.h

@@ -50,6 +50,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, MAX_HEIGHT_3C(GxEPD2_154_Z90c)> display(GxEPD2_154_Z90c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+//GxEPD2_3C<GxEPD2_290_C90c, MAX_HEIGHT_3C(GxEPD2_290_C90c)> display(GxEPD2_290_C90c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=77*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
@@ -104,6 +105,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, MAX_HEIGHT_3C(GxEPD2_154_Z90c)> display(GxEPD2_154_Z90c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, MAX_HEIGHT_3C(GxEPD2_213c)> display(GxEPD2_213c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
 //GxEPD2_3C<GxEPD2_290c, MAX_HEIGHT_3C(GxEPD2_290c)> display(GxEPD2_290c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
+//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
 //GxEPD2_3C<GxEPD2_270c, MAX_HEIGHT_3C(GxEPD2_270c)> display(GxEPD2_270c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
 //GxEPD2_3C<GxEPD2_420c, MAX_HEIGHT_3C(GxEPD2_420c)> display(GxEPD2_420c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
 //GxEPD2_3C<GxEPD2_583c, MAX_HEIGHT_3C(GxEPD2_583c)> display(GxEPD2_583c(/*CS=4*/ 4, /*DC=*/ 7, /*RST=*/ 6, /*BUSY=*/ 5));
@@ -153,6 +155,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
+//GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
 //GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=5*/ 5, /*DC=*/ 0, /*RST=*/ 2, /*BUSY=*/ 15));
@@ -201,6 +204,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
+//GxEPD2_3C<GxEPD2_290_C90c, GxEPD2_290_C90c::HEIGHT> display(GxEPD2_290_C90c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4)); // GDEM029C90
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
 //GxEPD2_3C<GxEPD2_420c, GxEPD2_420c::HEIGHT> display(GxEPD2_420c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
 //GxEPD2_3C<GxEPD2_583c, GxEPD2_583c::HEIGHT> display(GxEPD2_583c(/*CS=5*/ 5, /*DC=*/ 2, /*RST=*/ 0, /*BUSY=*/ 4));
@@ -251,6 +255,7 @@
 //GxEPD2_3C<GxEPD2_154_Z90c, GxEPD2_154_Z90c::HEIGHT> display(GxEPD2_154_Z90c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16)); // GDEH0154Z90
 //GxEPD2_3C<GxEPD2_213c, GxEPD2_213c::HEIGHT> display(GxEPD2_213c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16));
 //GxEPD2_3C<GxEPD2_290c, GxEPD2_290c::HEIGHT> display(GxEPD2_290c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16));
+//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
 //GxEPD2_3C<GxEPD2_270c, GxEPD2_270c::HEIGHT> display(GxEPD2_270c(/*CS=15*/ SS, /*DC=4*/ 4, /*RST=5*/ 5, /*BUSY=16*/ 16));
 // 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));

examples/GxEPD2_HelloWorld/GxEPD2_display_selection_new_style.h

@@ -48,10 +48,11 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212
 //#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296
 //#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264
 //#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300
 //#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  600x384
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  640x384
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248     // GDEW1248T3  1303x984
@@ -139,9 +140,9 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 
 #if defined(__AVR)
-#if defined (ARDUINO_AVR_MEGA2560)
+#if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
 #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
-#else
+#else // Note: SS is on 10 on UNO, NANO
 #define MAX_DISPLAY_BUFFER_SIZE 800 // 
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
@@ -152,7 +153,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #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=10*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 #endif
 
 #if defined(ARDUINO_ARCH_SAM)

examples/GxEPD2_MinimumExample/GxEPD2_display_selection_new_style.h

@@ -48,10 +48,11 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212
 //#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296
 //#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264
 //#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300
 //#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  600x384
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  640x384
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248     // GDEW1248T3  1303x984
@@ -139,9 +140,9 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 
 #if defined(__AVR)
-#if defined (ARDUINO_AVR_MEGA2560)
+#if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
 #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
-#else
+#else // Note: SS is on 10 on UNO, NANO
 #define MAX_DISPLAY_BUFFER_SIZE 800 // 
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
@@ -152,7 +153,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #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=10*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 #endif
 
 #if defined(ARDUINO_ARCH_SAM)

examples/GxEPD2_NotPagedExample/GxEPD2_display_selection_new_style.h

@@ -48,10 +48,11 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212
 //#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296
 //#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264
 //#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300
 //#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  600x384
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  640x384
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248     // GDEW1248T3  1303x984
@@ -139,9 +140,9 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 
 #if defined(__AVR)
-#if defined (ARDUINO_AVR_MEGA2560)
+#if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
 #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
-#else
+#else // Note: SS is on 10 on UNO, NANO
 #define MAX_DISPLAY_BUFFER_SIZE 800 // 
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
@@ -152,7 +153,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #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=10*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 #endif
 
 #if defined(ARDUINO_ARCH_SAM)

examples/GxEPD2_PagedDisplayUsingCallback/GxEPD2_display_selection_new_style.h

@@ -48,10 +48,11 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212
 //#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296
 //#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264
 //#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300
 //#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  600x384
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  640x384
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248     // GDEW1248T3  1303x984
@@ -139,9 +140,9 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 
 #if defined(__AVR)
-#if defined (ARDUINO_AVR_MEGA2560)
+#if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
 #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
-#else
+#else // Note: SS is on 10 on UNO, NANO
 #define MAX_DISPLAY_BUFFER_SIZE 800 // 
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
@@ -152,7 +153,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #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=10*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 #endif
 
 #if defined(ARDUINO_ARCH_SAM)

examples/GxEPD2_SD_Example/GxEPD2_display_selection_new_style.h

@@ -48,10 +48,11 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212
 //#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296
 //#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264
 //#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300
 //#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  600x384
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  640x384
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248     // GDEW1248T3  1303x984
@@ -139,9 +140,9 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 
 #if defined(__AVR)
-#if defined (ARDUINO_AVR_MEGA2560)
+#if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
 #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
-#else
+#else // Note: SS is on 10 on UNO, NANO
 #define MAX_DISPLAY_BUFFER_SIZE 800 // 
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
@@ -152,7 +153,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #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=10*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 #endif
 
 #if defined(ARDUINO_ARCH_SAM)

examples/GxEPD2_SerialFlash_Example/GxEPD2_display_selection_new_style.h

@@ -48,10 +48,11 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212
 //#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296
 //#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264
 //#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300
 //#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  600x384
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  640x384
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248     // GDEW1248T3  1303x984
@@ -139,9 +140,9 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 
 #if defined(__AVR)
-#if defined (ARDUINO_AVR_MEGA2560)
+#if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
 #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
-#else
+#else // Note: SS is on 10 on UNO, NANO
 #define MAX_DISPLAY_BUFFER_SIZE 800 // 
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
@@ -152,7 +153,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #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=10*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 #endif
 
 #if defined(ARDUINO_ARCH_SAM)

examples/GxEPD2_Spiffs_Example/GxEPD2_display_selection_new_style.h

@@ -48,10 +48,11 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212
 //#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296
 //#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264
 //#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300
 //#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  600x384
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  640x384
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248     // GDEW1248T3  1303x984
@@ -139,9 +140,9 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 
 #if defined(__AVR)
-#if defined (ARDUINO_AVR_MEGA2560)
+#if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
 #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
-#else
+#else // Note: SS is on 10 on UNO, NANO
 #define MAX_DISPLAY_BUFFER_SIZE 800 // 
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
@@ -152,7 +153,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #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=10*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 #endif
 
 #if defined(ARDUINO_ARCH_SAM)

examples/GxEPD2_U8G2_Fonts_Example/GxEPD2_U8G2_Fonts_Example.ino

@@ -62,6 +62,10 @@ void loop()
 {
 }
 
+const char HelloWorld[] = "Hello World!";
+const char HelloArduino[] = "Hello Arduino!";
+const char HelloEpaper[] = "Hello E-Paper!";
+
 void helloWorld()
 {
   //Serial.println("helloWorld");
@@ -72,14 +76,22 @@ void helloWorld()
   u8g2Fonts.setForegroundColor(fg);         // apply Adafruit GFX color
   u8g2Fonts.setBackgroundColor(bg);         // apply Adafruit GFX color
   u8g2Fonts.setFont(u8g2_font_helvR14_tf);  // select u8g2 font from here: https://github.com/olikraus/u8g2/wiki/fntlistall
-  uint16_t x = (display.width() - 160) / 2;
-  uint16_t y = display.height() / 2;
+  int16_t tw = u8g2Fonts.getUTF8Width(HelloWorld); // text box width
+  int16_t ta = u8g2Fonts.getFontAscent(); // positive
+  int16_t td = u8g2Fonts.getFontDescent(); // negative; in mathematicians view
+  int16_t th = ta - td; // text box height
+  //Serial.print("ascent, descent ("); Serial.print(u8g2Fonts.getFontAscent()); Serial.print(", "); Serial.print(u8g2Fonts.getFontDescent()); Serial.println(")");
+  // center bounding box by transposition of origin:
+  // y is base line for u8g2Fonts, like for Adafruit_GFX True Type fonts
+  uint16_t x = (display.width() - tw) / 2;
+  uint16_t y = (display.height() - th) / 2 + ta;
+  //Serial.print("bounding box    ("); Serial.print(x); Serial.print(", "); Serial.print(y); Serial.print(", "); Serial.print(tw); Serial.print(", "); Serial.print(th); Serial.println(")");
   display.firstPage();
   do
   {
     display.fillScreen(bg);
     u8g2Fonts.setCursor(x, y); // start writing at this position
-    u8g2Fonts.print("Hello World!");
+    u8g2Fonts.print(HelloWorld);
   }
   while (display.nextPage());
   //Serial.println("helloWorld done");
@@ -95,15 +107,19 @@ void helloArduino()
   u8g2Fonts.setForegroundColor(fg);         // apply Adafruit GFX color
   u8g2Fonts.setBackgroundColor(bg);         // apply Adafruit GFX color
   u8g2Fonts.setFont(u8g2_font_helvR14_tf);  // select u8g2 font from here: https://github.com/olikraus/u8g2/wiki/fntlistall
-  uint16_t x = (display.width() - 160) / 2;
-  uint16_t y = display.height() / 4;
+  int16_t tw = u8g2Fonts.getUTF8Width(HelloArduino); // text box width
+  int16_t ta = u8g2Fonts.getFontAscent(); // positive
+  int16_t td = u8g2Fonts.getFontDescent(); // negative; in mathematicians view
+  int16_t th = ta - td; // text box height
+  uint16_t x = (display.width() - tw) / 2;
+  uint16_t y = display.height() / 4 - th / 2 + ta;
   display.setPartialWindow(0, y - 14, display.width(), 20);
   display.firstPage();
   do
   {
     display.fillScreen(bg);
     u8g2Fonts.setCursor(x, y);
-    u8g2Fonts.println("Hello Arduino!");
+    u8g2Fonts.print(HelloArduino);
   }
   while (display.nextPage());
   //Serial.println("helloArduino done");
@@ -119,15 +135,19 @@ void helloEpaper()
   u8g2Fonts.setForegroundColor(fg);         // apply Adafruit GFX color
   u8g2Fonts.setBackgroundColor(bg);         // apply Adafruit GFX color
   u8g2Fonts.setFont(u8g2_font_helvR14_tf);  // select u8g2 font from here: https://github.com/olikraus/u8g2/wiki/fntlistall
-  uint16_t x = (display.width() - 160) / 2;
-  uint16_t y = display.height() * 3 / 4;
+  int16_t tw = u8g2Fonts.getUTF8Width(HelloArduino); // text box width
+  int16_t ta = u8g2Fonts.getFontAscent(); // positive
+  int16_t td = u8g2Fonts.getFontDescent(); // negative; in mathematicians view
+  int16_t th = ta - td; // text box height
+  uint16_t x = (display.width() - tw) / 2;
+  uint16_t y = display.height() * 3 / 4 - th / 2 + ta;
   display.setPartialWindow(0, y - 14, display.width(), 20);
   display.firstPage();
   do
   {
     display.fillScreen(bg);
     u8g2Fonts.setCursor(x, y);
-    u8g2Fonts.println("Hello E-Paper!");
+    u8g2Fonts.print(HelloEpaper);
   }
   while (display.nextPage());
   //Serial.println("helloEpaper done");

examples/GxEPD2_U8G2_Fonts_Example/GxEPD2_display_selection_new_style.h

@@ -48,10 +48,11 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212
 //#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296
 //#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264
 //#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300
 //#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448
-//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  600x384
+//#define GxEPD2_DRIVER_CLASS GxEPD2_750c     // GDEW075Z09  640x384
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z08 // GDEW075Z08  800x480
 //#define GxEPD2_DRIVER_CLASS GxEPD2_750c_Z90 // GDEH075Z90  880x528
 //#define GxEPD2_DRIVER_CLASS GxEPD2_1248     // GDEW1248T3  1303x984
@@ -139,9 +140,9 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #endif
 
 #if defined(__AVR)
-#if defined (ARDUINO_AVR_MEGA2560)
+#if defined (ARDUINO_AVR_MEGA2560) // Note: SS is on 53 on MEGA
 #define MAX_DISPLAY_BUFFER_SIZE 5000 // e.g. full height for 200x200
-#else
+#else // Note: SS is on 10 on UNO, NANO
 #define MAX_DISPLAY_BUFFER_SIZE 800 // 
 #endif
 #if IS_GxEPD2_BW(GxEPD2_DISPLAY_CLASS)
@@ -152,7 +153,7 @@ GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> displ
 #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=10*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
+GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/*CS=*/ EPD_CS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));
 #endif
 
 #if defined(ARDUINO_ARCH_SAM)

examples/GxEPD2_WS_ESP32_Driver/GxEPD2_WS_ESP32_Driver.ino

@@ -70,6 +70,7 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212
 //#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296
 //#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264
 //#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300
 //#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448

examples/GxEPD2_WiFi_Example/GxEPD2_WiFi_Example.ino

@@ -67,6 +67,7 @@
 //#define GxEPD2_DRIVER_CLASS GxEPD2_154_Z90c // GDEH0154Z90 200x200
 //#define GxEPD2_DRIVER_CLASS GxEPD2_213c     // GDEW0213Z16 104x212
 //#define GxEPD2_DRIVER_CLASS GxEPD2_290c     // GDEW029Z10  128x296
+//#define GxEPD2_DRIVER_CLASS GxEPD2_290_C90c // GDEM029C90  128x296
 //#define GxEPD2_DRIVER_CLASS GxEPD2_270c     // GDEW027C44  176x264
 //#define GxEPD2_DRIVER_CLASS GxEPD2_420c     // GDEW042Z15  400x300
 //#define GxEPD2_DRIVER_CLASS GxEPD2_583c     // GDEW0583Z21 600x448

library.properties

@@ -1,5 +1,5 @@
 name=GxEPD2
-version=1.3.0
+version=1.3.1
 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

@@ -67,6 +67,7 @@ class GxEPD2
       GDEH0154Z90, Waveshare_1_54_bwr_Z90 = GDEH0154Z90,
       GDEW0213Z16, Waveshare_2_13_bwr = GDEW0213Z16,
       GDEW029Z10,  Waveshare_2_9_bwr = GDEW029Z10,
+      GDEM029C90,
       GDEW027C44,  Waveshare_2_7_bwr = GDEW027C44,
       GDEW042Z15,  Waveshare_4_2_bwr = GDEW042Z15,
       GDEW0583Z21, Waveshare_5_83_bwr = GDEW0583Z21,

src/GxEPD2_3C.h

@@ -34,6 +34,7 @@
 #include "epd3c/GxEPD2_154_Z90c.h"
 #include "epd3c/GxEPD2_213c.h"
 #include "epd3c/GxEPD2_290c.h"
+#include "epd3c/GxEPD2_290_C90c.h"
 #include "epd3c/GxEPD2_270c.h"
 #include "epd3c/GxEPD2_420c.h"
 #include "epd3c/GxEPD2_583c.h"

src/epd3c/GxEPD2_213c.cpp

@@ -250,7 +250,7 @@ void GxEPD2_213c::drawImage(const uint8_t bitmap[], int16_t x, int16_t y, int16_
 }
 
 void GxEPD2_213c::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)
+                                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);
@@ -263,7 +263,7 @@ void GxEPD2_213c::drawImage(const uint8_t* black, const uint8_t* color, int16_t
 }
 
 void GxEPD2_213c::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)
+                                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);
@@ -360,8 +360,8 @@ void GxEPD2_213c::_InitDisplay()
   //_waitWhileBusy("_wakeUp Power On");
   _writeCommand(0X00);
   _writeData(0x8f);
-  _writeCommand(0X50);
-  _writeData(0x37); //VCOM AND DATA INTERVAL SETTING
+  _writeCommand(0x50); //VCOM AND DATA INTERVAL SETTING
+  _writeData(0x77);    //WBmode:VBDF 17|D7 VBDW 97 VBDB 57   WBRmode:VBDF F7 VBDW 77 VBDB 37  VBDR B7
   _writeCommand(0x61); //resolution setting
   _writeData (0x68);   //source 104
   _writeData (0x00);
@@ -377,8 +377,9 @@ void GxEPD2_213c::_Init_Full()
 void GxEPD2_213c::_Init_Part()
 {
   _InitDisplay();
-  _writeCommand(0X50);
-  _writeData(0xF7);    //WBmode:VBDF 17|D7 VBDW 97 VBDB 57   WBRmode:VBDF F7 VBDW 77 VBDB 37  VBDR B7
+  _writeCommand(0x50); //VCOM AND DATA INTERVAL SETTING
+  _writeData(0x77);    //WBmode:VBDF 17|D7 VBDW 97 VBDB 57   WBRmode:VBDF F7 VBDW 77 VBDB 37  VBDR B7
+  //_writeData(0xF7);    //WBmode:VBDF 17|D7 VBDW 97 VBDB 57   WBRmode:VBDF F7 VBDW 77 VBDB 37  VBDR B7
   _PowerOn();
 }
 

src/epd3c/GxEPD2_290_C90c.cpp

@@ -0,0 +1,396 @@
+// 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
+// Controller: SSD1680 : https://v4.cecdn.yun300.cn/100001_1909185148/SSD1680.pdf
+//
+// Author: Jean-Marc Zingg
+//
+// Version: see library.properties
+//
+// Library: https://github.com/ZinggJM/GxEPD2
+
+#include "GxEPD2_290_C90c.h"
+
+GxEPD2_290_C90c::GxEPD2_290_C90c(int8_t cs, int8_t dc, int8_t rst, int8_t busy) :
+  GxEPD2_EPD(cs, dc, rst, busy, HIGH, 30000000, WIDTH, HEIGHT, panel, hasColor, hasPartialUpdate, hasFastPartialUpdate)
+{
+}
+
+void GxEPD2_290_C90c::clearScreen(uint8_t value)
+{
+  clearScreen(value, 0xFF);
+}
+
+void GxEPD2_290_C90c::clearScreen(uint8_t black_value, uint8_t color_value)
+{
+  _initial_write = false; // initial full screen buffer clean done
+  _Init_Part();
+  _setPartialRamArea(0, 0, WIDTH, HEIGHT);
+  _writeCommand(0x24);
+  for (uint32_t i = 0; i < uint32_t(WIDTH) * uint32_t(HEIGHT) / 8; i++)
+  {
+    _writeData(black_value);
+  }
+  _writeCommand(0x26);
+  for (uint32_t i = 0; i < uint32_t(WIDTH) * uint32_t(HEIGHT) / 8; i++)
+  {
+    _writeData(~color_value);
+  }
+  _Update_Part();
+}
+
+void GxEPD2_290_C90c::writeScreenBuffer(uint8_t value)
+{
+  writeScreenBuffer(value, 0xFF);
+}
+
+void GxEPD2_290_C90c::writeScreenBuffer(uint8_t black_value, uint8_t color_value)
+{
+  _initial_write = false; // initial full screen buffer clean done
+  _Init_Part();
+  _setPartialRamArea(0, 0, WIDTH, HEIGHT);
+  _writeCommand(0x24);
+  for (uint32_t i = 0; i < uint32_t(WIDTH) * uint32_t(HEIGHT) / 8; i++)
+  {
+    _writeData(black_value);
+  }
+  _writeCommand(0x26);
+  for (uint32_t i = 0; i < uint32_t(WIDTH) * uint32_t(HEIGHT) / 8; i++)
+  {
+    _writeData(~color_value);
+  }
+}
+
+void GxEPD2_290_C90c::writeImage(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, NULL, x, y, w, h, invert, mirror_y, pgm);
+}
+
+void GxEPD2_290_C90c::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 (_initial_write) writeScreenBuffer(); // initial full screen buffer clean
+  delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+  int16_t wb = (w + 7) / 8; // width bytes, bitmaps are padded
+  x -= x % 8; // byte boundary
+  w = wb * 8; // byte boundary
+  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_Part();
+  _setPartialRamArea(x1, y1, w1, h1);
+  _writeCommand(0x24);
+  for (int16_t i = 0; i < h1; i++)
+  {
+    for (int16_t j = 0; j < w1 / 8; j++)
+    {
+      uint8_t data = 0xFF;
+      if (black)
+      {
+        // use wb, h of bitmap for index!
+        int16_t idx = mirror_y ? j + dx / 8 + ((h - 1 - (i + dy))) * wb : j + dx / 8 + (i + dy) * wb;
+        if (pgm)
+        {
+#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
+          data = pgm_read_byte(&black[idx]);
+#else
+          data = black[idx];
+#endif
+        }
+        else
+        {
+          data = black[idx];
+        }
+        if (invert) data = ~data;
+      }
+      _writeData(data);
+    }
+  }
+  _writeCommand(0x26);
+  for (int16_t i = 0; i < h1; i++)
+  {
+    for (int16_t j = 0; j < w1 / 8; j++)
+    {
+      uint8_t data = 0xFF;
+      if (color)
+      {
+        // use wb, h of bitmap for index!
+        int16_t idx = mirror_y ? j + dx / 8 + ((h - 1 - (i + dy))) * wb : j + dx / 8 + (i + dy) * wb;
+        if (pgm)
+        {
+#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
+          data = pgm_read_byte(&color[idx]);
+#else
+          data = color[idx];
+#endif
+        }
+        else
+        {
+          data = color[idx];
+        }
+        if (invert) data = ~data;
+      }
+      _writeData(~data);
+    }
+  }
+  delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+}
+
+void GxEPD2_290_C90c::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)
+{
+  writeImagePart(bitmap, NULL, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
+}
+
+void GxEPD2_290_C90c::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)
+{
+  if (_initial_write) writeScreenBuffer(); // initial full screen buffer clean
+  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;
+  if (!_using_partial_mode) _Init_Part();
+  _setPartialRamArea(x1, y1, w1, h1);
+  _writeCommand(0x24);
+  for (int16_t i = 0; i < h1; i++)
+  {
+    for (int16_t j = 0; j < w1 / 8; j++)
+    {
+      uint8_t data;
+      // use wb_bitmap, h_bitmap of bitmap for index!
+      int16_t idx = mirror_y ? x_part / 8 + j + dx / 8 + ((h_bitmap - 1 - (y_part + i + dy))) * wb_bitmap : x_part / 8 + j + dx / 8 + (y_part + i + dy) * wb_bitmap;
+      if (pgm)
+      {
+#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
+        data = pgm_read_byte(&black[idx]);
+#else
+        data = black[idx];
+#endif
+      }
+      else
+      {
+        data = black[idx];
+      }
+      if (invert) data = ~data;
+      _writeData(data);
+    }
+  }
+  _writeCommand(0x26);
+  for (int16_t i = 0; i < h1; i++)
+  {
+    for (int16_t j = 0; j < w1 / 8; j++)
+    {
+      uint8_t data = 0xFF;
+      if (color)
+      {
+        // use wb_bitmap, h_bitmap of bitmap for index!
+        int16_t idx = mirror_y ? x_part / 8 + j + dx / 8 + ((h_bitmap - 1 - (y_part + i + dy))) * wb_bitmap : x_part / 8 + j + dx / 8 + (y_part + i + dy) * wb_bitmap;
+        if (pgm)
+        {
+#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
+          data = pgm_read_byte(&color[idx]);
+#else
+          data = color[idx];
+#endif
+        }
+        else
+        {
+          data = color[idx];
+        }
+        if (invert) data = ~data;
+      }
+      _writeData(~data);
+    }
+  }
+  delay(1); // yield() to avoid WDT on ESP8266 and ESP32
+}
+
+void GxEPD2_290_C90c::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)
+  {
+    writeImage(data1, x, y, w, h, invert, mirror_y, pgm);
+  }
+}
+
+void GxEPD2_290_C90c::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_290_C90c::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_290_C90c::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_290_C90c::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_290_C90c::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_290_C90c::refresh(bool partial_update_mode)
+{
+  if (partial_update_mode) refresh(0, 0, WIDTH, HEIGHT);
+  else _Update_Full();
+}
+
+void GxEPD2_290_C90c::refresh(int16_t x, int16_t y, int16_t w, int16_t h)
+{
+  x -= x % 8; // byte boundary
+  w -= x % 8; // byte boundary
+  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
+  w1 -= x1 - x;
+  h1 -= y1 - y;
+  _Init_Part();
+  _setPartialRamArea(x1, y1, w1, h1);
+  _Update_Part();
+}
+
+void GxEPD2_290_C90c::powerOff()
+{
+  _PowerOff();
+}
+
+void GxEPD2_290_C90c::hibernate()
+{
+  _PowerOff();
+  if (_rst >= 0)
+  {
+    _writeCommand(0x10); // deep sleep mode
+    _writeData(0x1);     // enter deep sleep
+    _hibernating = true;
+  }
+}
+
+void GxEPD2_290_C90c::_setPartialRamArea(uint16_t x, uint16_t y, uint16_t w, uint16_t h)
+{
+  _writeCommand(0x44);
+  _writeData(x / 8);
+  _writeData((x + w - 1) / 8);
+  _writeCommand(0x45);
+  _writeData(y % 256);
+  _writeData(y / 256);
+  _writeData((y + h - 1) % 256);
+  _writeData((y + h - 1) / 256);
+  _writeCommand(0x4e);
+  _writeData(x / 8);
+  _writeCommand(0x4f);
+  _writeData(y % 256);
+  _writeData(y / 256);
+}
+
+void GxEPD2_290_C90c::_PowerOn()
+{
+  if (!_power_is_on)
+  {
+    _writeCommand(0x22);
+    _writeData(0xf8);
+    _writeCommand(0x20);
+    _waitWhileBusy("_PowerOn", power_on_time);
+  }
+  _power_is_on = true;
+}
+
+void GxEPD2_290_C90c::_PowerOff()
+{
+  if (_power_is_on)
+  {
+    _writeCommand(0x22);
+    _writeData(0x83);
+    _writeCommand(0x20);
+    _waitWhileBusy("_PowerOff", power_off_time);
+  }
+  _power_is_on = false;
+}
+
+void GxEPD2_290_C90c::_InitDisplay()
+{
+  if (_hibernating) _reset();
+  delay(10); // 10ms according to specs
+  _writeCommand(0x12);  //SWRESET
+  delay(10); // 10ms according to specs
+  _writeCommand(0x01); //Driver output control      
+  _writeData(0x27);
+  _writeData(0x01);
+  _writeData(0x00);
+  _writeCommand(0x11); //data entry mode       
+  _writeData(0x03);
+  _writeCommand(0x3C); //BorderWavefrom
+  _writeData(0x05);  
+  _writeCommand(0x18); //Read built-in temperature sensor
+  _writeData(0x80);  
+  _writeCommand(0x21); //  Display update control
+  _writeData(0x00);  
+  _writeData(0x80);  
+  _setPartialRamArea(0, 0, WIDTH, HEIGHT);
+}
+
+void GxEPD2_290_C90c::_Init_Full()
+{
+  _InitDisplay();
+  _PowerOn();
+}
+
+void GxEPD2_290_C90c::_Init_Part()
+{
+  _InitDisplay();
+  _PowerOn();
+}
+
+void GxEPD2_290_C90c::_Update_Full()
+{
+  _writeCommand(0x22);
+  _writeData(0xf7);
+  _writeCommand(0x20);
+  _waitWhileBusy("_Update_Full", full_refresh_time);
+}
+
+void GxEPD2_290_C90c::_Update_Part()
+{
+  _writeCommand(0x22);
+  _writeData(0xf7);
+  _writeCommand(0x20);
+  _waitWhileBusy("_Update_Part", partial_refresh_time);
+}

src/epd3c/GxEPD2_290_C90c.h

@@ -0,0 +1,74 @@
+// 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
+// Controller: SSD1680 : https://v4.cecdn.yun300.cn/100001_1909185148/SSD1680.pdf
+//
+// Author: Jean-Marc Zingg
+//
+// Version: see library.properties
+//
+// Library: https://github.com/ZinggJM/GxEPD2
+
+#ifndef _GxEPD2_290_C90c_H_
+#define _GxEPD2_290_C90c_H_
+
+#include "../GxEPD2_EPD.h"
+
+class GxEPD2_290_C90c : public GxEPD2_EPD
+{
+  public:
+    // attributes
+    static const uint16_t WIDTH = 128;
+    static const uint16_t HEIGHT = 296;
+    static const GxEPD2::Panel panel = GxEPD2::GDEM029C90;
+    static const bool hasColor = true;
+    static const bool hasPartialUpdate = true; // but refresh is full screen
+    static const bool hasFastPartialUpdate = false;
+    static const uint16_t power_on_time = 100; // ms, e.g. 94628us
+    static const uint16_t power_off_time = 150; // ms, e.g. 139874us
+    static const uint16_t full_refresh_time = 27000; // ms, e.g. 26130024us
+    static const uint16_t partial_refresh_time = 27000; // ms, e.g. 26130024us
+    // constructor
+    GxEPD2_290_C90c(int8_t cs, int8_t dc, int8_t rst, int8_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);
+    // 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)
+  private:
+    void _writeScreenBuffer(uint8_t value);
+    void _setPartialRamArea(uint16_t x, uint16_t y, uint16_t w, uint16_t h);
+    void _PowerOn();
+    void _PowerOff();
+    void _InitDisplay();
+    void _Init_Full();
+    void _Init_Part();
+    void _Update_Full();
+    void _Update_Part();
+};
+
+#endif