1.dsp

/*
 * first.c
 *
 * Created: 28.10.2019 12:25:37
 * Author : dspproject
 */
// 14.7456 MHz
#define F_CPU 14745600UL

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

int main(void)
{
    /* Replace with your application code */
    DDRB |= 0xFF;
    int i;
    while (1)
    {

        for(i = 0; i < 7; i++)
        {
            PORTB = 1<<i;
            _delay_ms(200);
            //PORTB &= ~i;

            //_delay_ms(200);
        }
    }
}