| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364 | /** *  @filename   :   epd2in9b_V4-demo.ino *  @brief      :   2.9inch e-paper display demo *  @author     :   Waveshare * *  Copyright (C) Waveshare     2023-12-20 * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documnetation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to  whom the Software is * furished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */#include <SPI.h>#include "epd2in9b_V4.h"#include "imagedata.h"Epd epd;void setup() {  // put your setup code here, to run once:  Serial.begin(115200);  Serial.print("2.9inch b V4 e-Paper init \r\n ");  if (epd.Init() != 0) {      Serial.print("e-Paper init failed\r\n ");      return;  }  Serial.print("e-Paper Clear\r\n ");  epd.Clear();#if 0  Serial.print("draw image\r\n ");  epd.Display(IMAGE_DATA, IMAGE_DATA);#else  epd.Init_Fast();  Serial.print("draw image\r\n ");  epd.Display_Fast(IMAGE_DATA, IMAGE_DATA);#endif  delay(2000);  Serial.print("e-Paper Clear\r\n ");  epd.Init();  epd.Clear();  Serial.print("Goto Sleep...\r\n");  epd.Sleep();}void loop() {  // put your main code here, to run repeatedly:}
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