timery zadanie 2

#include<avr/io.h>



int main(void){
    TCCR0 |=  (1<<CS00);// | (1<<CS01);
    TCCR0 |= ~(1<<CS01);
    DDRA = 0xFF;

     while (1){
        PORTA = 0x00;
        opuzn(200);
        PORTA = 0xFF;
        opuzn(200);
    }

}

int opuzn(int czas){

while(1){

    if(TIFR & (1<<TOV0)){
        TIFR |= (1<<TOV0);
        TCNT0 = 255 - czas;
        return 0;
    }
}
}