#include <GxEPD.h>
#include <GxDEPG0290BS/GxDEPG0290BS.h> // 2.9" b/w Waveshare variant, TTGO T5 V2.4.1 2.9"
#include <GxIO/GxIO_SPI/GxIO_SPI.h>
#include <GxIO/GxIO.h>
#include <Fonts/FreeMonoBold9pt7b.h>
#include <Fonts/FreeMonoBold12pt7b.h>

// Create an instance of the display
GxIO_Class io(SPI, /*CS=*/ SS, /*DC=*/ 8, /*RST=*/ 9); // for Arduino R3
GxEPD_Class display(io, /*RST=*/ 9, /*BUSY=*/ 7);

const uint8_t triangleBitmap[] PROGMEM = {
  0x00, 0x18, 0x3C, 0x7E, 0xFF, 0x00, 0x00, 0x00, // Simple triangle (8x8)
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};

const uint8_t squareBitmap[] PROGMEM = {
  0xFF, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0xFF, // Simple square (8x8)
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};

void setup() {
  Serial.begin(115200);
  Serial.println("setup");
  display.init(115200); // enable diagnostic output on Serial
  Serial.println("setup done");
}

void loop() {
  showTriangle();
  delay(2000);
  showSquare();
  delay(2000);
 // showText("Arvind PATIL");

 showText(" AN EYE FOR AN EYE WILL MAKE THE WHOLE WORLD BLIND");

  delay(5000);
  display.powerDown();
  delay(10000);
}

void showTriangle() {
  display.fillScreen(GxEPD_WHITE);
  display.drawBitmap(64, 64, triangleBitmap, 8, 8, GxEPD_BLACK);
  display.update();
}

void showSquare() {
  display.fillScreen(GxEPD_WHITE);
  display.drawBitmap(64, 64, squareBitmap, 8, 8, GxEPD_BLACK);
  display.update();
}

void showText(const char* text) {
  display.fillScreen(GxEPD_WHITE);
  display.setFont(&FreeMonoBold12pt7b);
  display.setTextColor(GxEPD_BLACK);
  display.setCursor(20, 50);
  display.print(text);
  display.update();
}