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; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
20 static int ao_watchdog_enabled = TRUE;
26 while (!ao_watchdog_enabled)
27 ao_sleep(&ao_watchdog_enabled);
28 while (ao_watchdog_enabled) {
29 ao_delay(AO_WATCHDOG_INTERVAL);
30 ao_gpio_set(AO_WATCHDOG_PORT, AO_WATCHDOG_BIT, AO_WATCHDOG_PIN, 1);
32 ao_gpio_set(AO_WATCHDOG_PORT, AO_WATCHDOG_BIT, AO_WATCHDOG_PIN, 0);
41 if (ao_cmd_status == ao_cmd_success) {
42 ao_watchdog_enabled = ao_cmd_lex_i != 0;
43 ao_wakeup(&ao_watchdog_enabled);
48 static __code struct ao_cmds ao_watchdog_cmds[] = {
49 { ao_watchdog_set, "Q <0 off, 1 on>\0Enable or disable watchdog timer" },
53 static struct ao_task watchdog_task;
56 ao_watchdog_init(void)
58 ao_enable_output(AO_WATCHDOG_PORT, AO_WATCHDOG_BIT, AO_WATCHDOG, 0);
59 ao_cmd_register(&ao_watchdog_cmds[0]);
60 ao_add_task(&watchdog_task, ao_watchdog, "watchdog");