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

int main(void)
{
	DDRE |= (1<<DDE4);
	
	TCCR1B = (1<<CS10) | (1<<CS12) | (1<<WGM12); // Prescaler 1024 and timer counter reset on compare value
	TCNT1 = 0; // set initial counter value to 0
	OCR1A = (16000000/(1024*1))-1; // set compare value to 15624
	TIMSK1 |= (1<<OCIE1A);

	sei();
	while (1) {
	}
}

ISR(TIMER1_COMPA_vect){
	PORTE ^= (1<<PE4);
}