395 lines
13 KiB
Plaintext
395 lines
13 KiB
Plaintext
// 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: https://www.good-display.com/product/386.html
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// Panel: GDEY042T81 : https://www.good-display.com/product/386.html
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// Controller : SSD1683 : https://v4.cecdn.yun300.cn/100001_1909185148/SSD1683.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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#include "GxEPD2_420_GDEY042T81.h"
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GxEPD2_420_GDEY042T81::GxEPD2_420_GDEY042T81(int16_t cs, int16_t dc, int16_t rst, int16_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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void GxEPD2_420_GDEY042T81::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(0x26, value); // set previous
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_writeScreenBuffer(0x24, 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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void GxEPD2_420_GDEY042T81::writeScreenBuffer(uint8_t value)
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{
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if (_initial_write) return clearScreen(value);
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_writeScreenBuffer(0x24, value); // set current
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}
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void GxEPD2_420_GDEY042T81::writeScreenBufferAgain(uint8_t value)
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{
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_writeScreenBuffer(0x24, value); // set current
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_writeScreenBuffer(0x26, value); // set previous
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}
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void GxEPD2_420_GDEY042T81::_writeScreenBuffer(uint8_t command, uint8_t value)
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{
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if (!_init_display_done) _InitDisplay();
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_setPartialRamArea(0, 0, WIDTH, HEIGHT);
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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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void GxEPD2_420_GDEY042T81::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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void GxEPD2_420_GDEY042T81::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); // set current
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}
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void GxEPD2_420_GDEY042T81::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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void GxEPD2_420_GDEY042T81::_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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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 (!_init_display_done) _InitDisplay();
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if (_initial_write) writeScreenBuffer(); // initial full screen buffer clean
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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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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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_transfer(data);
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}
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}
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_endTransfer();
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delay(1); // yield() to avoid WDT on ESP8266 and ESP32
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}
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void GxEPD2_420_GDEY042T81::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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void GxEPD2_420_GDEY042T81::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(0x24, bitmap, x_part, y_part, w_bitmap, h_bitmap, x, y, w, h, invert, mirror_y, pgm);
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_writeImagePart(0x26, 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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void GxEPD2_420_GDEY042T81::_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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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 (!_init_display_done) _InitDisplay();
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if (_initial_write) writeScreenBuffer(); // initial full screen buffer clean
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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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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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_transfer(data);
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}
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}
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_endTransfer();
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delay(1); // yield() to avoid WDT on ESP8266 and ESP32
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}
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void GxEPD2_420_GDEY042T81::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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void GxEPD2_420_GDEY042T81::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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void GxEPD2_420_GDEY042T81::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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void GxEPD2_420_GDEY042T81::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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void GxEPD2_420_GDEY042T81::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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void GxEPD2_420_GDEY042T81::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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void GxEPD2_420_GDEY042T81::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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void GxEPD2_420_GDEY042T81::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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void GxEPD2_420_GDEY042T81::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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void GxEPD2_420_GDEY042T81::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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_setPartialRamArea(x1, y1, w1, h1);
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_Update_Part();
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}
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void GxEPD2_420_GDEY042T81::powerOff()
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{
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_PowerOff();
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}
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void GxEPD2_420_GDEY042T81::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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_init_display_done = false;
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}
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}
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void GxEPD2_420_GDEY042T81::_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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void GxEPD2_420_GDEY042T81::_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(0xe0);
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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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void GxEPD2_420_GDEY042T81::_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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void GxEPD2_420_GDEY042T81::_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); // Set MUX as 300
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_writeData(0x2B);
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_writeData(0x01);
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_writeData(0x00);
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_writeCommand(0x3C); //BorderWavefrom
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_writeData(0x01); //
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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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_init_display_done = true;
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}
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void GxEPD2_420_GDEY042T81::_Update_Full()
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{
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_writeCommand(0x21); // Display Update Controll
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_writeData(0x40); // bypass RED as 0
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_writeData(0x00); // single chip application
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if (useFastFullUpdate)
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{
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_writeCommand(0x1A); // Write to temperature register
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// _writeData(0x64); // 100°C
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_writeData(0x19); // 25°C
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_writeCommand(0x22);
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_writeData(0xd7);
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}
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else
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{
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_writeCommand(0x22);
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_writeData(0xf7);
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}
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_writeCommand(0x20);
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_waitWhileBusy("_Update_Full", full_refresh_time);
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_power_is_on = false;
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}
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void GxEPD2_420_GDEY042T81::_Update_Part()
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{
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_writeCommand(0x21); // Display Update Controll
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_writeData(0x00); // RED normal
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_writeData(0x00); // single chip application
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_writeCommand(0x22);
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// _writeData(0xfc);
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_writeData(0xff);
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_writeCommand(0x20);
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_waitWhileBusy("_Update_Part", partial_refresh_time);
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_power_is_on = true;
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}
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