aboutsummaryrefslogtreecommitdiff
path: root/kernel/clock.c
blob: 6d49a6396306ef7de82ba279e35e8886b8a02c2b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
/* $Id$ */
/*
 * Copyright (c) 2011 Dimitri Sokolyuk <demon@dim13.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <avr/io.h>

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>

#include "kernel.h"
#include "tasks.h"

void
clock(void *arg)
{
	uint8_t d, h, m, s, ds;

	d = h = m = s = ds = 0;

	for (;;) {
		++ds;
		if (ds == 10) { ds = 0; ++s; }
		if (s == 60) { s = 0; ++m; }
		if (m == 60) { m = 0; ++h; }
		if (h == 24) { h = 0; ++d; }

		lock(Display);
		fprintf(stderr, "\r%4d:%.2d:%.2d:%.2d.%1d ", d, h, m, s, ds);
		unlock(Display);

		sleep(0, 100000);
	}
}