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+// Display Library for SPI e-paper panels from Dalian Good Display and boards from Waveshare.
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+// Requires HW SPI and Adafruit_GFX. Caution: the e-paper panels require 3.3V supply AND data lines!
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+//
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+// based on Demo Example from Good Display, available here: http://www.e-paper-display.com/download_detail/downloadsId=806.html
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+// Panel: GDEM029T94 : https://www.good-display.com/product/360.html, Waveshare variant without partial wft in OTP
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+// Controller : SSD1680 : https://www.good-display.com/companyfile/101.html
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+// Display: Waveshare 2.9" b/w V2 : https://www.waveshare.com/product/displays/e-paper/2.9inch-e-paper-module.htm
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+//
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+// Author: Jean-Marc Zingg
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+//
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+// Version: see library.properties
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+//
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+// Library: https://github.com/ZinggJM/GxEPD2
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+//
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+// note: this is a driver class variant for the Waveshare V2 board with controller without partial update wft in OTP
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+
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+#include "GxEPD2_290_T94_V2.h"
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+
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+GxEPD2_290_T94_V2::GxEPD2_290_T94_V2(int8_t cs, int8_t dc, int8_t rst, int8_t busy) :
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+ GxEPD2_EPD(cs, dc, rst, busy, HIGH, 10000000, WIDTH, HEIGHT, panel, hasColor, hasPartialUpdate, hasFastPartialUpdate)
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+{
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+}
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+
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+void GxEPD2_290_T94_V2::clearScreen(uint8_t value)
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+{
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+ writeScreenBuffer(value);
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+ refresh(true);
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+ writeScreenBufferAgain(value);
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+}
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+
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+void GxEPD2_290_T94_V2::writeScreenBuffer(uint8_t value)
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+{
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+ if (!_using_partial_mode) _Init_Part();
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+ if (_initial_write) _writeScreenBuffer(0x26, value); // set previous
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+ _writeScreenBuffer(0x24, value); // set current
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+ _initial_write = false; // initial full screen buffer clean done
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+}
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+
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+void GxEPD2_290_T94_V2::writeScreenBufferAgain(uint8_t value)
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+{
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+ if (!_using_partial_mode) _Init_Part();
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+ _writeScreenBuffer(0x26, value); // set previous
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+ _writeScreenBuffer(0x24, value); // set current
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+}
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+
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+void GxEPD2_290_T94_V2::_writeScreenBuffer(uint8_t command, uint8_t value)
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+{
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+ _writeCommand(command);
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+ for (uint32_t i = 0; i < uint32_t(WIDTH) * uint32_t(HEIGHT) / 8; i++)
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+ {
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+ _writeData(value);
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+ }
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+}
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+
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+void GxEPD2_290_T94_V2::writeImage(const uint8_t bitmap[], int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
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+{
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+ _writeImage(0x24, bitmap, x, y, w, h, invert, mirror_y, pgm);
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+}
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+
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+void GxEPD2_290_T94_V2::writeImageForFullRefresh(const uint8_t bitmap[], int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
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+{
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+ _writeImage(0x26, bitmap, x, y, w, h, invert, mirror_y, pgm); // set previous
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+ _writeImage(0x24, bitmap, x, y, w, h, invert, mirror_y, pgm);
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+}
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+
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+
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+void GxEPD2_290_T94_V2::writeImageAgain(const uint8_t bitmap[], int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
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+{
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+ _writeImage(0x26, bitmap, x, y, w, h, invert, mirror_y, pgm); // set previous
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+ _writeImage(0x24, bitmap, x, y, w, h, invert, mirror_y, pgm); // set current
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+}
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+
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+void GxEPD2_290_T94_V2::_writeImage(uint8_t command, const uint8_t bitmap[], int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
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+{
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+ if (_initial_write) writeScreenBuffer(); // initial full screen buffer clean
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+ delay(1); // yield() to avoid WDT on ESP8266 and ESP32
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+ int16_t wb = (w + 7) / 8; // width bytes, bitmaps are padded
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+ x -= x % 8; // byte boundary
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+ w = wb * 8; // byte boundary
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+ int16_t x1 = x < 0 ? 0 : x; // limit
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+ int16_t y1 = y < 0 ? 0 : y; // limit
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+ int16_t w1 = x + w < int16_t(WIDTH) ? w : int16_t(WIDTH) - x; // limit
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+ int16_t h1 = y + h < int16_t(HEIGHT) ? h : int16_t(HEIGHT) - y; // limit
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+ int16_t dx = x1 - x;
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+ int16_t dy = y1 - y;
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+ w1 -= dx;
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+ h1 -= dy;
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+ if ((w1 <= 0) || (h1 <= 0)) return;
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+ if (!_using_partial_mode) _Init_Part();
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+ _setPartialRamArea(x1, y1, w1, h1);
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+ _writeCommand(command);
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+ for (int16_t i = 0; i < h1; i++)
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+ {
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+ for (int16_t j = 0; j < w1 / 8; j++)
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+ {
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+ uint8_t data;
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+ // use wb, h of bitmap for index!
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+ int16_t idx = mirror_y ? j + dx / 8 + ((h - 1 - (i + dy))) * wb : j + dx / 8 + (i + dy) * wb;
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+ if (pgm)
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+ {
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+#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
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+ data = pgm_read_byte(&bitmap[idx]);
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+#else
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+ data = bitmap[idx];
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+#endif
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+ }
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+ else
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+ {
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+ data = bitmap[idx];
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+ }
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+ if (invert) data = ~data;
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+ _writeData(data);
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+ }
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+ }
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+ delay(1); // yield() to avoid WDT on ESP8266 and ESP32
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+}
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+
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+void GxEPD2_290_T94_V2::writeImagePart(const uint8_t bitmap[], int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
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+ int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
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+{
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+ _writeImagePart(0x24, bitmap, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
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+}
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+
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+void GxEPD2_290_T94_V2::writeImagePartAgain(const uint8_t bitmap[], int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
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+ int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
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+{
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+ _writeImagePart(0x26, bitmap, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm); // set previous
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+ _writeImagePart(0x24, bitmap, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm); // set current
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+}
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+
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+void GxEPD2_290_T94_V2::_writeImagePart(uint8_t command, const uint8_t bitmap[], int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
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+ int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
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+{
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+ if (_initial_write) writeScreenBuffer(); // initial full screen buffer clean
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+ delay(1); // yield() to avoid WDT on ESP8266 and ESP32
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+ if ((w_bitmap < 0) || (h_bitmap < 0) || (w < 0) || (h < 0)) return;
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+ if ((x_part < 0) || (x_part >= w_bitmap)) return;
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+ if ((y_part < 0) || (y_part >= h_bitmap)) return;
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+ int16_t wb_bitmap = (w_bitmap + 7) / 8; // width bytes, bitmaps are padded
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+ x_part -= x_part % 8; // byte boundary
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+ w = w_bitmap - x_part < w ? w_bitmap - x_part : w; // limit
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+ h = h_bitmap - y_part < h ? h_bitmap - y_part : h; // limit
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+ x -= x % 8; // byte boundary
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+ w = 8 * ((w + 7) / 8); // byte boundary, bitmaps are padded
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+ int16_t x1 = x < 0 ? 0 : x; // limit
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+ int16_t y1 = y < 0 ? 0 : y; // limit
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+ int16_t w1 = x + w < int16_t(WIDTH) ? w : int16_t(WIDTH) - x; // limit
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+ int16_t h1 = y + h < int16_t(HEIGHT) ? h : int16_t(HEIGHT) - y; // limit
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+ int16_t dx = x1 - x;
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+ int16_t dy = y1 - y;
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+ w1 -= dx;
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+ h1 -= dy;
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+ if ((w1 <= 0) || (h1 <= 0)) return;
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+ if (!_using_partial_mode) _Init_Part();
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+ _setPartialRamArea(x1, y1, w1, h1);
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+ _writeCommand(command);
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+ for (int16_t i = 0; i < h1; i++)
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+ {
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+ for (int16_t j = 0; j < w1 / 8; j++)
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+ {
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+ uint8_t data;
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+ // use wb_bitmap, h_bitmap of bitmap for index!
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+ 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;
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+ if (pgm)
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+ {
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+#if defined(__AVR) || defined(ESP8266) || defined(ESP32)
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+ data = pgm_read_byte(&bitmap[idx]);
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+#else
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+ data = bitmap[idx];
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+#endif
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+ }
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+ else
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+ {
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+ data = bitmap[idx];
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+ }
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+ if (invert) data = ~data;
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+ _writeData(data);
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+ }
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+ }
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+ delay(1); // yield() to avoid WDT on ESP8266 and ESP32
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+}
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+
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+void GxEPD2_290_T94_V2::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)
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+{
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+ if (black)
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+ {
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+ writeImage(black, x, y, w, h, invert, mirror_y, pgm);
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+ }
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+}
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+
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+void GxEPD2_290_T94_V2::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,
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+ int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
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+{
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+ if (black)
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+ {
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+ writeImagePart(black, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
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+ }
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+}
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+
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+void GxEPD2_290_T94_V2::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)
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+{
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+ if (data1)
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+ {
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+ writeImage(data1, x, y, w, h, invert, mirror_y, pgm);
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+ }
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+}
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+
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+void GxEPD2_290_T94_V2::drawImage(const uint8_t bitmap[], int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
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+{
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+ writeImage(bitmap, x, y, w, h, invert, mirror_y, pgm);
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+ refresh(x, y, w, h);
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+ writeImageAgain(bitmap, x, y, w, h, invert, mirror_y, pgm);
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+}
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+
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+void GxEPD2_290_T94_V2::drawImagePart(const uint8_t bitmap[], int16_t x_part, int16_t y_part, int16_t w_bitmap, int16_t h_bitmap,
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+ int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
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+{
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+ writeImagePart(bitmap, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
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+ refresh(x, y, w, h);
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+ writeImagePartAgain(bitmap, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
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+}
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+
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+void GxEPD2_290_T94_V2::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)
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+{
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+ if (black)
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+ {
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+ drawImage(black, x, y, w, h, invert, mirror_y, pgm);
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+ }
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+}
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+
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+void GxEPD2_290_T94_V2::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,
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+ int16_t x, int16_t y, int16_t w, int16_t h, bool invert, bool mirror_y, bool pgm)
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+{
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+ if (black)
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+ {
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+ drawImagePart(black, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
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+ }
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+}
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+
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+void GxEPD2_290_T94_V2::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)
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+{
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+ if (data1)
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+ {
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+ drawImage(data1, x, y, w, h, invert, mirror_y, pgm);
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+ }
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+}
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+
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+void GxEPD2_290_T94_V2::refresh(bool partial_update_mode)
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+{
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+ if (partial_update_mode) refresh(0, 0, WIDTH, HEIGHT);
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+ else
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+ {
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+ if (_using_partial_mode) _Init_Full();
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+ _Update_Full();
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+ _initial_refresh = false; // initial full update done
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+ }
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+}
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+
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+void GxEPD2_290_T94_V2::refresh(int16_t x, int16_t y, int16_t w, int16_t h)
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+{
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+ if (_initial_refresh) return refresh(false); // initial update needs be full update
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+ x -= x % 8; // byte boundary
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+ w -= x % 8; // byte boundary
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+ int16_t x1 = x < 0 ? 0 : x; // limit
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+ int16_t y1 = y < 0 ? 0 : y; // limit
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+ int16_t w1 = x + w < int16_t(WIDTH) ? w : int16_t(WIDTH) - x; // limit
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+ int16_t h1 = y + h < int16_t(HEIGHT) ? h : int16_t(HEIGHT) - y; // limit
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+ w1 -= x1 - x;
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+ h1 -= y1 - y;
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+ if (!_using_partial_mode) _Init_Part();
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+ _setPartialRamArea(x1, y1, w1, h1);
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+ _Update_Part();
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+}
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+
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+void GxEPD2_290_T94_V2::powerOff()
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+{
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+ _PowerOff();
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+}
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+
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+void GxEPD2_290_T94_V2::hibernate()
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+{
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+ _PowerOff();
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+ if (_rst >= 0)
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+ {
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+ _writeCommand(0x10); // deep sleep mode
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+ _writeData(0x1); // enter deep sleep
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+ _hibernating = true;
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+ }
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+}
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+
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+void GxEPD2_290_T94_V2::_setPartialRamArea(uint16_t x, uint16_t y, uint16_t w, uint16_t h)
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+{
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+ _writeCommand(0x11); // set ram entry mode
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+ _writeData(0x03); // x increase, y increase : normal mode
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+ _writeCommand(0x44);
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+ _writeData(x / 8);
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+ _writeData((x + w - 1) / 8);
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+ _writeCommand(0x45);
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+ _writeData(y % 256);
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+ _writeData(y / 256);
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+ _writeData((y + h - 1) % 256);
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+ _writeData((y + h - 1) / 256);
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+ _writeCommand(0x4e);
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+ _writeData(x / 8);
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+ _writeCommand(0x4f);
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+ _writeData(y % 256);
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+ _writeData(y / 256);
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+}
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+
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+void GxEPD2_290_T94_V2::_PowerOn()
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+{
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+ if (!_power_is_on)
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+ {
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+ _writeCommand(0x22);
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+ _writeData(0xf8);
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+ _writeCommand(0x20);
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+ _waitWhileBusy("_PowerOn", power_on_time);
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+ }
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+ _power_is_on = true;
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+}
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+
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+void GxEPD2_290_T94_V2::_PowerOff()
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+{
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+ if (_power_is_on)
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+ {
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+ _writeCommand(0x22);
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+ _writeData(0x83);
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+ _writeCommand(0x20);
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+ _waitWhileBusy("_PowerOff", power_off_time);
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+ }
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+ _power_is_on = false;
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+ _using_partial_mode = false;
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+}
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+
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+void GxEPD2_290_T94_V2::_InitDisplay()
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+{
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+ if (_hibernating) _reset();
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+ delay(10); // 10ms according to specs
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+ _writeCommand(0x12); //SWRESET
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+ delay(10); // 10ms according to specs
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+ _writeCommand(0x01); //Driver output control
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+ _writeData(0x27);
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+ _writeData(0x01);
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+ _writeData(0x00);
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+ _writeCommand(0x11); //data entry mode
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+ _writeData(0x03);
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+ _writeCommand(0x3C); //BorderWavefrom
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+ _writeData(0x05);
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+ _writeCommand(0x21); // Display update control
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+ _writeData(0x00);
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+ _writeData(0x80);
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+ _writeCommand(0x18); //Read built-in temperature sensor
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+ _writeData(0x80);
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+ _setPartialRamArea(0, 0, WIDTH, HEIGHT);
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+}
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+
|
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+const unsigned char GxEPD2_290_T94_V2::lut_partial[] PROGMEM =
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+{
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+ 0x0, 0x40, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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+ 0x80, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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+ 0x40, 0x40, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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+ 0x0, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
|
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+ 0x0A, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2,
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+ 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
|
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+ 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
|
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+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
|
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+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
|
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+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
|
|
|
+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
|
|
|
+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
|
|
|
+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
|
|
|
+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
|
|
|
+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
|
|
|
+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
|
|
|
+ 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x0, 0x0, 0x0,
|
|
|
+};
|
|
|
+
|
|
|
+void GxEPD2_290_T94_V2::_Init_Full()
|
|
|
+{
|
|
|
+ _InitDisplay();
|
|
|
+ _PowerOn();
|
|
|
+ _using_partial_mode = false;
|
|
|
+}
|
|
|
+
|
|
|
+void GxEPD2_290_T94_V2::_Init_Part()
|
|
|
+{
|
|
|
+ _InitDisplay();
|
|
|
+ _writeCommand(0x32);
|
|
|
+ _writeDataPGM(lut_partial, sizeof(lut_partial));
|
|
|
+ _PowerOn();
|
|
|
+ _using_partial_mode = true;
|
|
|
+}
|
|
|
+
|
|
|
+void GxEPD2_290_T94_V2::_Update_Full()
|
|
|
+{
|
|
|
+ _writeCommand(0x22);
|
|
|
+ _writeData(0xf4);
|
|
|
+ _writeCommand(0x20);
|
|
|
+ _waitWhileBusy("_Update_Full", full_refresh_time);
|
|
|
+}
|
|
|
+
|
|
|
+void GxEPD2_290_T94_V2::_Update_Part()
|
|
|
+{
|
|
|
+ _writeCommand(0x22);
|
|
|
+ _writeData(0xcc);
|
|
|
+ _writeCommand(0x20);
|
|
|
+ _waitWhileBusy("_Update_Part", partial_refresh_time);
|
|
|
+}
|
ZinggJM