Waveshare 7.5" b/w/r display with NodeMCU ESP8266

Other Hardware Displays
1

Hello,
I'm all new in this arduino/e-paper stuff and a bit lost here.
I have a 7.5" b/w/r waveshare display and had it working with NodeMCU ESP8266. I am facing 2 issues and need your help on that.

  1. I am not able to load red color on the display. Here's the code I am using,
#include <SPI.h>
#include "epd7in5_V2.h"
#include "canada.h"

void setup() {
  // put your setup code here, to run once:
  
    Serial.begin(115200);
    
    Epd epd;
    Serial.print("e-Paper init \r\n ");
    if (epd.Init() != 0) {
        Serial.print("e-Paper init failed\r\n ");
        return;
    }
    
    Serial.print("e-Paper Display\r\n ");
 
 epd.Displaypart(gImage_canada,0,0,600,300); 
   
   Serial.print("e-Paper Clear\r\n ");
   epd.Clear();
    epd.Sleep();
}

I also tried using GxEPD library, but it didn't work. Program compiled without any error but didn't get anything on the display

#define ENABLE_GxEPD2_GFX 0

#include <GxEPD2_BW.h>
#include <GxEPD2_3C.h>
#include "data.h"
#include "canada.h"
GxEPD2_3C<GxEPD2_154c, GxEPD2_154c::HEIGHT> display(GxEPD2_154c(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4));
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println();
  Serial.println("setup");
  delay(100);
  display.init(115200);
  display.fillScreen(GxEPD_WHITE);
  display.setFullWindow();
  drawBitmaps();
  display.display(false);
}

void loop() {
  // put your main code here, to run repeatedly:

}
void drawBitmaps()
{


  //display.drawInvertedBitmap(0, 0, IMAGE_BLACK, 200, 200, GxEPD_BLACK); // data.h
  //display.drawInvertedBitmap(0, 0, IMAGE_RED, 200, 200, GxEPD_RED); // data.h
  display.drawBitmap(0, 0, gImage_canada, 600, 300, GxEPD_RED); // canada
 
}
  1. Every time the image is created on the display, it goes into a loop and starts refreshing then creating again, until I remove the cable from my laptop

I have connected my display like this-

image
image1380×504 52.3 KB

And I have used Image2LCD.exe software to create the images.

Can anyone please help me with these issues, Thanks again!

2

@harshalp, your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advise on) your project :wink: See About the Installation & Troubleshooting category.

3

ok thanks!

4

@sterretje could you please help me with this issue? I really don't have any idea how to proceed from here.

Thanks!

5

I unfortunately have no experience with displays so can't help.