diff options
| author | Bdale Garbee <bdale@gag.com> | 2012-09-12 20:01:22 -0600 |
|---|---|---|
| committer | Bdale Garbee <bdale@gag.com> | 2012-09-12 20:01:22 -0600 |
| commit | 3b612efcd1dddc6a3d59012f7ed57754b1f798c2 (patch) | |
| tree | 18d50713491ef96c5c127a309f870efb6c33f98d /src/cc1111/ao_battery.c | |
| parent | e076773c1693e2a62bb828dee71c04c20dbab0a5 (diff) | |
| parent | 01eb36408d7e0e826b431fcc1d3b2deb23607e0b (diff) | |
Merge branch 'new-debian' into debian
Conflicts:
ChangeLog
debian/altos.install
debian/changelog
debian/control
debian/copyright
debian/dirs
debian/docs
debian/menu
debian/rules
src/Makefile
Diffstat (limited to 'src/cc1111/ao_battery.c')
| -rw-r--r-- | src/cc1111/ao_battery.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/cc1111/ao_battery.c b/src/cc1111/ao_battery.c new file mode 100644 index 00000000..b9845fb3 --- /dev/null +++ b/src/cc1111/ao_battery.c @@ -0,0 +1,60 @@ +/* + * Copyright © 2011 Keith Packard <keithp@keithp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +#include "ao.h" +static __data union { + uint8_t d[2]; + int16_t v; +} ao_battery_value; + +void +ao_battery_isr(void) ao_arch_interrupt(1) +{ + ao_battery_value.d[0] = ADCL; + ao_battery_value.d[1] = ADCH; + ao_wakeup(DATA_TO_XDATA(&ao_battery_value)); +} + +uint16_t +ao_battery_get(void) +{ + ao_arch_critical( + ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | BATTERY_PIN; + ao_sleep(DATA_TO_XDATA(&ao_battery_value)); + ); + return (uint16_t) ((int32_t) ao_battery_value.v * (int32_t) 4950 >> 15); +} + +static void +ao_battery_show(void) +{ + printf("Battery: %u mV\n", ao_battery_get()); +} + +__code struct ao_cmds ao_battery_cmds[] = { + { ao_battery_show, "B\0Show battery voltage" }, + { 0, NULL }, +}; + +void +ao_battery_init(void) +{ + ADCCFG = (1 << BATTERY_PIN); + ADCIF = 0; + IEN0 |= IEN0_ADCIE; + ao_cmd_register(&ao_battery_cmds[0]); +} |