zadanie 2 a

#include<avr/io.h>



int main(void){

	DDRB = 0xFF;
	PORTB = 0xFF;

	TCCR0 |= ((1<<WGM01) | (1<<WGM00));
	TCCR0 |= ((1<<COM01) | (1<<COM00));

	TCCR0 |= (1<<CS00);

	int licz = 0;
	 while (1){

	 for(licz = 0; licz < 255; licz++){
	 	OCR0 = licz;
		for (int i = 0; i< 100; i++)__asm__ ( "nop;");
		}

	for(licz = 255; licz > 0; licz--){
		//_delay_ms(5);
		for (int i = 0; i< 100; i++)__asm__ ( "nop;");
	 }
	 }

}

/*
int opuzn(int czas){

while(1){

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