/*
 * Blink13.c
 *
 * Created: 12/11/2015 23:21:09
 * Author : viper
 */ 
 
//#define F_CPU 16000000L // Specify oscillator frequency

#include<atmel_start.h>
#include <avr/io.h>
#include <util/delay.h>
 
int main(void)
{
	atmel_start_init();
    DDRB = 0b00100000; // configure pin 5 of PORTB as output (digital pin 13 on the Arduino Uno)
     
    while(1)
    {
        PORTB = 0b00100000; // set 5th bit to HIGH
        _delay_ms(1000);
        PORTB = 0b00000000; // set 5th bit to LOW
        _delay_ms(1000);
    }
}