2 * Copyright © 2014 Bdale Garbee <bdale@gag.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.
25 lpc_scb.sysahbclkctrl |= (1 << LPC_SCB_SYSAHBCLKCTRL_GPIO);
26 lpc_gpio.dir[RELAY_PORT] |= RELAY_BIT;
29 // switch relay to selected output, turn correct LED on as a side effect
31 ao_relay_control(uint8_t output)
35 lpc_gpio.pin[RELAY_PORT] |= RELAY_BIT;
36 ao_led_on(AO_LED_RED);
37 ao_led_off(AO_LED_GREEN);
40 lpc_gpio.pin[RELAY_PORT] &= ~RELAY_BIT;
41 ao_led_off(AO_LED_RED);
42 ao_led_on(AO_LED_GREEN);
47 ao_relay_select(void) __reentrant
52 if (ao_cmd_status != ao_cmd_success)
54 output = ao_cmd_lex_i;
56 printf ("Invalid relay position %u\n", output);
58 ao_relay_control(output);
61 static __code struct ao_cmds ao_relay_cmds[] = {
62 { ao_relay_select, "R <output>\0Select relay output" },
77 ao_led_init(LEDS_AVAILABLE);
81 // initialize to default output
83 ao_relay_control(relay_output);
87 ao_cmd_register(ao_relay_cmds);