2 * Copyright © 2011 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.
26 ao_battery_isr(void) ao_arch_interrupt(1)
28 ao_battery_value.d[0] = ADCL;
29 ao_battery_value.d[1] = ADCH;
30 ao_wakeup(DATA_TO_XDATA(&ao_battery_value));
37 ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | BATTERY_PIN;
38 ao_sleep(DATA_TO_XDATA(&ao_battery_value));
40 return (uint16_t) ((int32_t) ao_battery_value.v * (int32_t) 4950 >> 15);
46 printf("Battery: %u mV\n", ao_battery_get());
49 __code struct ao_cmds ao_battery_cmds[] = {
50 { ao_battery_show, "B\0Show battery voltage" },
57 ADCCFG = (1 << BATTERY_PIN);
60 ao_cmd_register(&ao_battery_cmds[0]);