#include <stdio.h>
#include <avr/io.h>
#include <util/twi.h>
#include <util/delay.h>

#include "i2c.h"
#include "ssd1306_display_driver.h"
#include "debug.h" //TODO move to timer
#include "br24t_eeprom_driver.h"
/**
 * TODO
 * make sure desired functions are static (it's just good practice)
 * crashing, stack tracing, if that ever matters
 * see if stdio is ever needed in non debug builds
 * Battery factors to test:
 *  OLED clock (command 0xd5)
 *  OLED stay on/off
 * organize i2c eeprom/timer code
 */


#if defined(DEBUG_BUILD) || defined(EEPROM_INSTALL)
#include "uart.h" //TODO remove if needed
#endif




int main() {
  //initlizes i2c, right now only speed //TODO don't delegate a whole function if desired
  i2c_init();
  screen_init();
#if defined(DEBUG_BUILD) || defined(EEPROM_INSTALL)
  //initlizes usart registers
  uart_init();
  FILE stdout_replacement = FDEV_SETUP_STREAM((void *)uart_sendbyte, NULL, _FDEV_SETUP_WRITE);
  FILE stdin_replacement = FDEV_SETUP_STREAM(NULL, (void *)uart_recvbyte, _FDEV_SETUP_READ);
  stdout = &stdout_replacement;
  stdin = &stdin_replacement;
  screen_testdraw();
#endif
  
  //initilize timer
  timer_init();

#ifdef EEPROM_INSTALL
  flash_eeprom();
#endif


  //initlizes screen registers with good values since we dont have control over reset functionallity
  screen_init();

  return 0;
}