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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: https://www.good-display.com/product/426.html
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+// Panel: GDEY037T03 : https://www.good-display.com/product/437.html
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+// Controller: UC8253 : https://v4.cecdn.yun300.cn/100001_1909185148/UC8253.pdf
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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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+#include "GxEPD2_370_GDEY037T03.h"
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+
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+GxEPD2_370_GDEY037T03::GxEPD2_370_GDEY037T03(int16_t cs, int16_t dc, int16_t rst, int16_t busy) :
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+ GxEPD2_EPD(cs, dc, rst, busy, LOW, 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_370_GDEY037T03::clearScreen(uint8_t value)
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+{
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+ // full refresh needed for all cases (previous != screen)
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+ _writeScreenBuffer(0x10, value); // set previous
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+ _writeScreenBuffer(0x13, value); // set current
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+ refresh(false); // full refresh
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+ _initial_write = false;
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+}
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+
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+void GxEPD2_370_GDEY037T03::writeScreenBuffer(uint8_t value)
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+{
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+ if (_initial_write) return clearScreen(value);
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+ _writeScreenBuffer(0x13, value); // set current
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+}
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+
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+void GxEPD2_370_GDEY037T03::writeScreenBufferAgain(uint8_t value)
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+{
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+ _writeScreenBuffer(0x10, value); // set previous
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+ //_writeScreenBuffer(0x13, value); // set current, not needed
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+}
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+
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+void GxEPD2_370_GDEY037T03::_writeScreenBuffer(uint8_t command, uint8_t value)
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+{
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+ if (!_init_display_done) _InitDisplay();
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+ _writeCommand(command);
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+ _startTransfer();
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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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+ _transfer(value);
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+ }
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+ _endTransfer();
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+}
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+
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+void GxEPD2_370_GDEY037T03::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(0x13, bitmap, x, y, w, h, invert, mirror_y, pgm);
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+}
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+
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+void GxEPD2_370_GDEY037T03::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(0x10, bitmap, x, y, w, h, invert, mirror_y, pgm); // set previous
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+ _writeImage(0x13, 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_370_GDEY037T03::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(0x10, bitmap, x, y, w, h, invert, mirror_y, pgm); // set previous
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+ //_writeImage(0x13, bitmap, x, y, w, h, invert, mirror_y, pgm); // set current, not needed
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+}
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+
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+void GxEPD2_370_GDEY037T03::_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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+ delay(1); // yield() to avoid WDT on ESP8266 and ESP32
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+ uint16_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 (!_init_display_done) _InitDisplay();
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+ if (_initial_write) writeScreenBuffer(); // initial full screen buffer clean
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+ _writeCommand(0x91); // partial in
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+ _setPartialRamArea(x1, y1, w1, h1);
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+ _writeCommand(command);
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+ _startTransfer();
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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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+ uint16_t idx = mirror_y ? j + dx / 8 + uint16_t((h - 1 - (i + dy))) * wb : j + dx / 8 + uint16_t(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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+ _transfer(data);
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+ }
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+ }
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+ _endTransfer();
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+ _writeCommand(0x92); // partial out
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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_370_GDEY037T03::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(0x13, 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_370_GDEY037T03::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(0x10, bitmap, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm); // set previous
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+ //_writeImagePart(0x13, bitmap, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm); // set current, not needed
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+}
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+
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+void GxEPD2_370_GDEY037T03::_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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+ 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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+ uint16_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 (!_init_display_done) _InitDisplay();
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+ if (_initial_write) writeScreenBuffer(); // initial full screen buffer clean
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+ _writeCommand(0x91); // partial in
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+ _setPartialRamArea(x1, y1, w1, h1);
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+ _writeCommand(command);
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+ _startTransfer();
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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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+ uint16_t idx = mirror_y ? x_part / 8 + j + dx / 8 + uint16_t((h_bitmap - 1 - (y_part + i + dy))) * wb_bitmap : x_part / 8 + j + dx / 8 + uint16_t(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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+ _transfer(data);
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+ }
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+ }
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+ _endTransfer();
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+ _writeCommand(0x92); // partial out
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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_370_GDEY037T03::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_370_GDEY037T03::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_370_GDEY037T03::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_370_GDEY037T03::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_370_GDEY037T03::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_370_GDEY037T03::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_370_GDEY037T03::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_370_GDEY037T03::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_370_GDEY037T03::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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+ _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_370_GDEY037T03::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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+ // intersection with screen
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+ int16_t w1 = x < 0 ? w + x : w; // reduce
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+ int16_t h1 = y < 0 ? h + y : h; // reduce
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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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+ w1 = x1 + w1 < int16_t(WIDTH) ? w1 : int16_t(WIDTH) - x1; // limit
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+ h1 = y1 + h1 < int16_t(HEIGHT) ? h1 : int16_t(HEIGHT) - y1; // limit
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+ if ((w1 <= 0) || (h1 <= 0)) return;
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+ // make x1, w1 multiple of 8
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+ w1 += x1 % 8;
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+ if (w1 % 8 > 0) w1 += 8 - w1 % 8;
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+ x1 -= x1 % 8;
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+ if (usePartialUpdateWindow) _writeCommand(0x91); // partial in
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+ _setPartialRamArea(x1, y1, w1, h1);
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+ _Update_Part();
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+ if (usePartialUpdateWindow) _writeCommand(0x92); // partial out
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+}
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+
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+void GxEPD2_370_GDEY037T03::powerOff(void)
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+{
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+ _PowerOff();
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+}
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+
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+void GxEPD2_370_GDEY037T03::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(0x07); // deep sleep
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+ _writeData(0xA5); // check code
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+ _hibernating = true;
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+ _init_display_done = false;
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+ }
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+}
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+
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+void GxEPD2_370_GDEY037T03::_setPartialRamArea(uint16_t x, uint16_t y, uint16_t w, uint16_t h)
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+{
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+ uint16_t xe = (x + w - 1) | 0x0007; // byte boundary inclusive (last byte)
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+ uint16_t ye = y + h - 1;
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+ x &= 0xFFF8; // byte boundary
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+ _writeCommand(0x90); // partial window
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+ _writeData(x);
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+ _writeData(xe);
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+ _writeData(y / 256);
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+ _writeData(y % 256);
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+ _writeData(ye / 256);
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+ _writeData(ye % 256);
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+ _writeData(0x01);
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+}
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+
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+void GxEPD2_370_GDEY037T03::_PowerOn()
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+{
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+ if (!_power_is_on)
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+ {
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+ _writeCommand(0x04);
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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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|
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+void GxEPD2_370_GDEY037T03::_PowerOff()
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|
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+{
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+ if (_power_is_on)
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|
|
+ {
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+ _writeCommand(0x02); // power off
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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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|
|
+}
|
|
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+
|
|
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+void GxEPD2_370_GDEY037T03::_InitDisplay()
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|
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+{
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|
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+ if (_hibernating) _reset();
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|
|
+ else
|
|
|
+ {
|
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+ _writeCommand(0x00); // PANEL SETTING
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+ _writeData(0x1e); // soft reset
|
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|
+ _writeData(0x0d);
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+ delay(1);
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|
|
+ }
|
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|
+ _power_is_on = false;
|
|
|
+ _writeCommand(0x00); // PANEL SETTING
|
|
|
+ _writeData(0x1f); // KW: 3f, KWR: 2F, BWROTP: 0f, BWOTP: 1f
|
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|
+ _writeData(0x0d);
|
|
|
+ _init_display_done = true;
|
|
|
+}
|
|
|
+
|
|
|
+void GxEPD2_370_GDEY037T03::_Update_Full()
|
|
|
+{
|
|
|
+ if (useFastFullUpdate)
|
|
|
+ {
|
|
|
+ _writeCommand(0xE0); // Cascade Setting (CCSET)
|
|
|
+ _writeData(0x02); // TSFIX
|
|
|
+ _writeCommand(0xE5); // Force Temperature (TSSET)
|
|
|
+ //_writeData(0x5F); // 1486000us
|
|
|
+ _writeData(0x5A); // 1005000us, less greyish
|
|
|
+ }
|
|
|
+ _writeCommand(0x50);
|
|
|
+ _writeData(0x97);
|
|
|
+ _PowerOn();
|
|
|
+ _writeCommand(0x12); //display refresh
|
|
|
+ _waitWhileBusy("_Update_Full", full_refresh_time);
|
|
|
+ _PowerOff();
|
|
|
+ if (useFastFullUpdate) _InitDisplay(); // undo TSFIX
|
|
|
+}
|
|
|
+
|
|
|
+void GxEPD2_370_GDEY037T03::_Update_Part()
|
|
|
+{
|
|
|
+ if (hasFastPartialUpdate)
|
|
|
+ {
|
|
|
+ _writeCommand(0xE0); // Cascade Setting (CCSET)
|
|
|
+ _writeData(0x02); // TSFIX
|
|
|
+ _writeCommand(0xE5); // Force Temperature (TSSET)
|
|
|
+ _writeData(0x6E);
|
|
|
+ }
|
|
|
+ _writeCommand(0x50);
|
|
|
+ _writeData(0xD7);
|
|
|
+ _PowerOn();
|
|
|
+ _writeCommand(0x12); //display refresh
|
|
|
+ _waitWhileBusy("_Update_Part", partial_refresh_time);
|
|
|
+ _PowerOff();
|
|
|
+ if (hasFastPartialUpdate) _InitDisplay(); // undo TSFIX
|
|
|
+}
|
ZinggJM