2 * Copyright © 2013 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
21 static int ao_watchdog_enabled = true;
27 while (!ao_watchdog_enabled)
28 ao_sleep(&ao_watchdog_enabled);
29 while (ao_watchdog_enabled) {
30 ao_delay(AO_WATCHDOG_INTERVAL);
31 ao_gpio_set(AO_WATCHDOG_PORT, AO_WATCHDOG_BIT, 1);
33 ao_gpio_set(AO_WATCHDOG_PORT, AO_WATCHDOG_BIT, 0);
41 uint32_t r = ao_cmd_hex();
42 if (ao_cmd_status == ao_cmd_success) {
43 ao_watchdog_enabled = r != 0;
44 ao_wakeup(&ao_watchdog_enabled);
49 static const struct ao_cmds ao_watchdog_cmds[] = {
50 { ao_watchdog_set, "Q <0 off, 1 on>\0Enable or disable watchdog timer" },
54 static struct ao_task watchdog_task;
57 ao_watchdog_init(void)
59 ao_enable_output(AO_WATCHDOG_PORT, AO_WATCHDOG_BIT, 0);
60 ao_cmd_register(&ao_watchdog_cmds[0]);
61 ao_add_task(&watchdog_task, ao_watchdog, "watchdog");