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


#define blink_delay 10

// pin info

// led = Pin10 = PA3(ADC3/T0/PCINT3)
// button = Pin 6 = PA7(PCINT7/ICP/OC0B/ADC7)

int main(void){

  DDRA |= _BV(PA3); // led

  // same as DDRA = DDRA | _BV(PA3)

  //DDRA in page66 of datasheet
  //|= bitwise inclusive OR and assignment operator -> 011 | 001 = 011
  //_BV(bit) ... converts a bit number to a byte value, you need to include avr/io.h to use
  // this means that PA3 is a bit...

  // Looping forever
  while(1){
    PORTA |= _BV(PA3); // turn on
    // PORTA example in page56 of datasheet

    _delay_ms(blink_delay);

    PORTA = 0; // turn off
    // clears PORTA?

    _delay_ms(blink_delay);
  }

  return 1;
}