timer optimierungsabhängig o_O

[sonium]

Irgendwie wills mit Interupt nicht:

#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/signal.h>

uint8_t timer = 0;
uint8_t msecond = 0;

SIGNAL (SIG_OVERFLOW0)
{
	if (timer++ % 16 == 0) msecond++;
};

int wait(time)
{
	TCNT0 = 0;
	msecond = 0;
	while(1)
	{
		if (msecond >= time) return 0;
	}
}

int main()
{
	TIMSK |= (1<<TOIE1);
	TCCR0 |= (1<<CS00)|(1<<CS02);
   	DDRC = 0xFF;
    int time = 1000;
    PORTC = 0xFF;
    sei();
    while(1)
    {   
    	PORTC |= (1<<2);
    	wait(time);
    	PORTC &= ~(1<<2);
		wait(time);
    }
    return 0;
}