#include <avr/io.h>
#include <stdint.h>

void wacht1sec() {
	uint8_t i;

	TCCR0&=~(1<<COM01|1<<COM00|1<<WGM00|1<<CS01);
	TCCR0|=1<<WGM01|1<<CS02|1<<CS00;
	OCR0=239;
	TCNT0=0;

	for (i=0; i<10; i++) {
		TIFR=1<<OCF0;
		while(~TIFR&1<<OCF0);
	}

	TCCR0&=~(1<<CS02|1<<CS01|1<<CS00);
}

int main() {
	void wacht1sec();	

	wacht1sec();

	while(1);
	return 0;
}