/** 
 * ---------------------------------------------------------------+ 
 * @desc        OLED SSD1306 example
 * ---------------------------------------------------------------+ 
 *              Copyright (C) 2020 Marian Hrinko.
 *              Written by Marian Hrinko (mato.hrinko@gmail.com)
 *
 * @author      Marian Hrinko
 * @datum       06.10.2020
 * @update      19.07.2021
 * @file        main.c
 * @version     3.0
 * @tested      AVR Atmega328p
 *
 * @depend      ssd1306.h
 * ---------------------------------------------------------------+
 * @descr       Version 1.0 -> applicable for 1 display
 *              Version 2.0 -> rebuild to 'cacheMemLcd' array
 *              Version 3.0 -> remove 'cacheMemLcd'
 * ---------------------------------------------------------------+
 */

// include libraries
#include "lib/ssd1306.h"
#include <util/delay.h>

/**
 * @desc    Main function
 *
 * @param   void
 *
 * @return  int
 */
int main(void)
{
  char str[2];
  uint8_t i;
  uint8_t addr = SSD1306_ADDRESS;

  // init ssd1306
  SSD1306_Init (addr);

  // clear screen
  SSD1306_ClearScreen (addr);
  // draw line
  SSD1306_DrawLine (0, MAX_X, 4, 4);
  // set position
  SSD1306_SetPosition (7, 1);
  // draw string
  SSD1306_DrawString ("SSD1306 OLED DRIVER");
  // draw line
  SSD1306_DrawLine (0, MAX_X, 18, 18);
  // set position
  SSD1306_SetPosition (40, 3);
/*
  // draw string
  SSD1306_DrawString ("MATIASUS");
  // draw string
  SSD1306_DrawString ("2021");
*/
  // update
  SSD1306_UpdateScreen (addr);

  for (i=0; i<10; i++) {
    // into string
    sprintf(str, "%d", i);
    // set position
    SSD1306_SetPosition (60, 3);
    // draw string
    SSD1306_DrawString (str);
    // update
    SSD1306_UpdateScreen (addr);
    // delay
    _delay_ms(100);
  }

  // return value
  return 0;
}