#define ENABLE_GxEPD2_GFX 0

#include <GxEPD2_BW.h>
#include <Fonts/FreeMonoBold9pt7b.h>

#include "tux.h"

/*
  see GxEPD2_WS_ESP32_Driver.ino and esp32-waveshare-epd/src/DEV_Config.h

  #define EPD_SCK_PIN  13
  #define EPD_MOSI_PIN 14
  #define EPD_CS_PIN   15
  #define EPD_RST_PIN  26
  #define EPD_DC_PIN   27
  #define EPD_BUSY_PIN 25

  mapping of Waveshare ESP32 Driver Board
  BUSY -> 25, RST -> 26, DC -> 27, CS-> 15, CLK -> 13, DIN -> 14
 */
GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=*/ 15, /*DC=*/ 27, /*RST=*/ 26, /*BUSY=*/ 25));


void board_spi_setup() {
	/* board-specific setup */
	SPI.end();
	SPI.begin(13, 12, 14, 15);
}

void display_setup() {
	display.init();
	board_spi_setup();
}

void draw() {
	display.setRotation(1);
	display.setFont(&FreeMonoBold9pt7b);
	display.setTextColor(GxEPD_BLACK);
	display.firstPage();

	do {
		display.fillScreen(GxEPD_WHITE);
		display.setCursor(30, 30);
		display.print("Hello World!");

		display.drawInvertedBitmap(10, 30, tux_280x370, 280, 370, GxEPD_BLACK);
	} while(display.nextPage());
}

void setup() {
	display_setup();
	draw();

	display.powerOff();
}

void loop() {
	delay(1000);
}