/*
 * firsttry.c
 *
 * Created: 17.9.2015 11:15:25
 * Author: d14valicek
 * Rozsvietit LEDku na PB1
 */ 

#define F_CPU 1000000UL
#include <avr/io.h>
#include <util/delay.h>
#include <math.h>

int main(void)
{
	DDRD = 0xFF;
    while(1)
	{
		for (int c = 1; c <=256; c=c*2)
		{ 
			PORTD = ~c;
			_delay_ms(100);
		}
		for (int c = 256; c >=1; c=c/2) //hod zacina 0; pyta sa ci je hod mensia ako 256; hod + 1
		{ 
			PORTD = ~c;
			_delay_ms(100);
		}
    }
	
	return 0;
}