/**
 * Copyright CCC Basel 2020.
 *
 * This documentation describes Open Hardware and is licensed under the
 * CERN OHL v. 1.2.
 *
 * You may redistribute and modify this documentation under the terms of the
 * CERN OHL v.1.2. (http://ohwr.org/cernohl).
 *
 * This documentation is distributed
 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY,
 * SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Please see the CERN OHL v.1.2 for applicable conditions.
 */

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

void init() {
	PORTB = 0;
	DDRB = _BV(PB0) | _BV(PB1) | _BV(PB2) | _BV(PB3) | _BV(PB4);
}

void loop() {
	for (uint8_t i = 0; i < 5; i++) {
		PORTB = _BV(i);
		_delay_ms(500);
	}
}

int main() {
	init();

	while (1) {
		loop();
	}

	return 0;
}