#include "main.h"
// https://github.com/lkoepsel/AVR_C

#define LED_ON setBit(PORTB,Bit5)
#define LED_OFF clearBit(PORTB,Bit5)
#define LED_TOGGLE toggleBit(PORTB, Bit5)

#define LED1_ON setBit(PORTB,Bit3)
#define LED1_OFF clearBit(PORTB,Bit3)
#define LED1_TOGGLE toggleBit(PORTB, Bit3)

#define PRESSED checkBit_0(PINB, Bit4)


int main(void)
{
  initPortB();
  initTimer0();
  initInterrupts();
  // Hauptschleife
  while(1)
  {
    if (PRESSED)
    {
      LED_ON;
    }
    else
    {
      LED_OFF;
    }
  }
}

// Timer0 Interrupt Service Routine
ISR(TIMER0_OVF_vect){
  // entered every 64µs*256@16Mhz => 16.384ms@16Mhz 
  static int counter = 0;
  #define POSTSCALER 31 // 31*16.384ms = 507.904ms
  counter++;
  if (counter >= POSTSCALER){
    LED1_TOGGLE;
    counter=0;
  }
}