/*
 * uppgift3.c
 *
 * Created: 2020-02-27 10:54:57
 * Author : eko15lj1
 */
#define F_CPU 16000000UL

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

extern void led_on(char);
extern void led_off(char);
extern char check_button(char);

int main(void)
{
    /* Replace with your application code */
    while (1)
    {

		led_on(check_button(0xff));
		_delay_ms(500);
		led_off(check_button(0xff));
		_delay_ms(500);

	}
}