// LED Button Blink Program
#include <avr/io.h>
#define F_CPU 1e6
#include <util/delay.h>

#define TRUE 1
#define FALSE 0

int main()
{
  //Button is on PA7
  //LED is PB2

  PORTA= _BV(PA7); //Turn button pullup resistor on
  DDRB = _BV(PB2); //Enable output on the LED pin
  PORTB = _BV(PB2); //Turns LED on

  //LOOP
  while (TRUE)
  {
    //button is not pushed
    if ((PINA & _BV(PA7))) {
      PORTB = 0; //turn LED off
    //else, turn LED on
    } else {
      PORTB = _BV(PB2);
      _delay_ms(1000);
      PORTB = 0;
      _delay_ms(1000);
    }
  }
}