Do NOT use Github, it looks out of date. Here is the minimum example from the Arduino Library Examples. Now we have to wonder if the official library is different from what you are using. At the end are screen shots of what found NO github.
// GxEPD_MinimumExample by Jean-Marc Zingg
#include <GxEPD.h>
// select the display class to use, only one, copy from GxEPD_Example
#include <GxGDEH0154D67/GxGDEH0154D67.h> // 1.54" b/w
#include <GxIO/GxIO_SPI/GxIO_SPI.h>
#include <GxIO/GxIO.h>
// constructor for AVR Arduino, copy from GxEPD_Example else
GxIO_Class io(SPI, /*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9); // arbitrary selection of 8, 9 selected for default of GxEPD_Class
GxEPD_Class display(io, /*RST=*/ 9, /*BUSY=*/ 7); // default selection of (9), 7
void setup()
{
display.init();
display.eraseDisplay();
// comment out next line to have no or minimal Adafruit_GFX code
display.drawPaged(drawHelloWorld); // version for AVR using paged drawing, works also on other processors
}
void drawHelloWorld()
{
display.setTextColor(GxEPD_BLACK);
display.print("Hello World!");
}
void loop() {};
and examples
