#include <SPI.h>
#include <GxEPD2_BW.h>
#include <Adafruit_GFX.h>    // Core graphics library

#define EPD_CS   15
#define EPD_DC   21
#define EPD_RST 22
#define EPD_BUSY 23

#define EPD_SCLK 4
#define EPD_MISO -1
#define EPD_MOSI 5

const int buttonPin = 26;



GxEPD2_BW<GxEPD2_290, GxEPD2_290::HEIGHT> display(GxEPD2_290(/*CS=*/ EPD_CS, /*DC=*/ EPD_DC, /*RST=*/ EPD_RST, /*BUSY=*/ EPD_BUSY));


const char HelloWorld[] = "Hello World!";
int buttonState;
int buttonPress;

void setup()
{
  SPI.begin(EPD_SCLK, EPD_MISO, EPD_MOSI);
  display.init();
  Serial.begin(115200);
  pinMode(buttonPin, INPUT_PULLUP);
}


void helloWorld()
{
  Serial.println(("Begin loop"));
  display.setRotation(1);
  display.setTextColor(GxEPD_BLACK);
  int16_t tbx, tby; uint16_t tbw, tbh;
  // center the bounding box by transposition of the origin:
  uint16_t x = ((display.width() - tbw) / 2) - tbx;
  uint16_t y = ((display.height() - tbh) / 2) - tby;
  display.setFullWindow();
  display.firstPage();
  do
  {
    display.fillScreen(GxEPD_WHITE);
    display.setCursor(x, y);
    display.print(HelloWorld);
  }
  while (display.nextPage());
  Serial.println("End loop");
  delay(10000);
}

void buttonListener() {
  buttonPress = 1;
  buttonPress--;
}

void loop() {
   Serial.begin(115200);
  buttonState = digitalRead(buttonPin);
  if (buttonState == LOW) {
    Serial.println(("button"));

  }
  helloWorld();
};