/*
 * main.c
 *
 *  Created on: 8 lis 2017
 *      Author: Student
 */
#include <avr/io.h>
#include <util/delay.h>


#define LED_PIN  (0b11111111)
#define LED_TOG PORTC ^= LED_PIN
#define KEY_PIN  (1<<PD0)
#define KEY_DOWN !(PIND &  KEY_PIN)

int main(void)
{
    DDRC |= LED_PIN;
    PORTC |=LED_PIN;
    DDRD &= ~KEY_PIN;
    PORTD |= KEY_PIN;


    uint8_t klawisz();

    while(1)
    {
        while(1)
        {
                for(int i=7;i>-1;i--)
                {
                PORTC =(1<<i);
                _delay_ms(100);
                PORTC ^=(1<<i);
                _delay_ms(100);
                }
                if (klawisz()) break;
        }
        while(1)
        {
            for(int i=0;i<8;i++)
                {
                PORTC =(1<<i);
                _delay_ms(100);
                PORTC ^=(1<<i);
                _delay_ms(100);
                }
            if (klawisz()) break;
        }
        ;
    }
}



uint8_t klawisz (void)
{ if(KEY_DOWN){
    _delay_ms(80);
    if (KEY_DOWN) return 1;
    } return 1;
}