Issue with waveshare-7.5inch-ePaper-display and ePaper_ESP32_Driver_Board

Other Hardware Displays
1

Hello. Looking forward to your help, Similar question to this post：issue-with-waveshare-7-5inch-e-ink-display，I purchased Waveshare 7.5 inch ePaper display and ePaper_ESP32_Driver_Board, the official DEMO successfully drove the screen, now I'm trying to drive it using GxEPD2_BW, but I've tried many times without success.

Links to products：

My code：

#include <GxEPD2_BW.h>   
#define CS 15
#define DC 27
#define RST 26
#define BUSY 25

GxEPD2_BW<GxEPD2_750, GxEPD2_750::HEIGHT> display(GxEPD2_750(CS, DC, RST, BUSY));

void setup() {
  Serial.begin(115200);
  Serial.println("Initializing...");
  display.init(115200);   
  display.fillScreen(GxEPD_WHITE);   
  display.display();  
  display.setRotation(1);  
  display.setTextColor(GxEPD_BLACK);  
  display.setTextSize(2);   
  display.setCursor(20, 20);   
  display.print("Hello, e-Paper!");
  display.display();  // 刷新屏幕
}

void loop() {
  // loop
}
2

I have not worked with hardware prior to this, my routine is open site programming and I would appreciate any help.

3

You should post such questions in the Displays section, else I usually don't notice the post.

See example GxEPD2_WS_ESP32_Driver.ino
The code for the ESP32 Driver board is also in the example GxEPD2_Example.ino
-jz-

5

Sorry for mis-categorising the question, thank you very much for your answer, I'll go and study the example you provided, the reply was quick and appreciated!!!

6

Thank you again, the screen drove successfully after I uncommented #define GxEPD2_DRIVER_CLASS GxEPD2_750_T7 in the link file you provided, as a newcomer to hardware development, very much admire your open source code and efficient responses to questions, you guys are so great.

1 Like
7

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