diff options
| author | Vic Yang <victoryang@chromium.org> | 2013-05-02 21:42:36 +0800 |
|---|---|---|
| committer | Vincent Palatin <vpalatin@chromium.org> | 2013-05-16 09:24:30 -0700 |
| commit | fc4267054cb89397cca85efe83868615f6c9c562 (patch) | |
| tree | 31c0260381e5d29a5132cc0abaa58d5cb98b04be | |
| parent | bbb45119ad1e05d1734dc037273ce9173b13926d (diff) | |
| download | chrome-ec-fc4267054cb89397cca85efe83868615f6c9c562.tar.gz | |
spring: Update PMU ADC constant
The current sense resistor has changed. Update constant here to reflect
the new values for DVT1.
BUG=None
TEST=Build Spring
BRANCH=Spring
Original-Change-Id: Ib27c45cef569fa758db2fbb428150c8c2b6732ef
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49892
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Change-Id: I176346f13880a63c611fc70dcdb4c462e729b146
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/51476
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
| -rw-r--r-- | board/spring/board.c | 2 | ||||
| -rw-r--r-- | board/spring/board.h | 4 | ||||
| -rw-r--r-- | board/spring/usb_charging.c | 4 |
3 files changed, 7 insertions, 3 deletions
diff --git a/board/spring/board.c b/board/spring/board.c index 968986acbd..2abc1d8425 100644 --- a/board/spring/board.c +++ b/board/spring/board.c @@ -526,7 +526,7 @@ static int power_command_info(struct host_cmd_handler_args *args) r->voltage_system = pmu_adc_read(ADC_VAC, ADC_FLAG_KEEP_ON) * 17000 / 1024; r->current_system = pmu_adc_read(ADC_IAC, 0) - * 20 * 33 / 1024; + * (1000 / R_INPUT_MOHM) * 33 / 1024; r->usb_dev_type = board_get_usb_dev_type(); r->usb_current_limit = board_get_usb_current_limit(); args->response_size = sizeof(*r); diff --git a/board/spring/board.h b/board/spring/board.h index 2fd69787f7..662188fb80 100644 --- a/board/spring/board.h +++ b/board/spring/board.h @@ -75,6 +75,10 @@ #define TIM_CLOCK_MSB 2 #define TIM_CLOCK_LSB 4 +/* Current sense resistor values */ +#define R_INPUT_MOHM 20 /* mOhm */ +#define R_BATTERY_MOHM 33 /* mOhm */ + /* ADC signal */ #define CONFIG_ADC enum adc_channel { diff --git a/board/spring/usb_charging.c b/board/spring/usb_charging.c index a0c54517b9..f0c40ea403 100644 --- a/board/spring/usb_charging.c +++ b/board/spring/usb_charging.c @@ -715,11 +715,11 @@ static int command_batdebug(int argc, char **argv) ccprintf("VAC = %d mV\n", pmu_adc_read(ADC_VAC, ADC_FLAG_KEEP_ON) * 17000 / 1024); ccprintf("IAC = %d mA\n", pmu_adc_read(ADC_IAC, ADC_FLAG_KEEP_ON) - * 20 * 33 / 1024); + * (1000 / R_INPUT_MOHM) * 33 / 1024); ccprintf("VBAT = %d mV\n", pmu_adc_read(ADC_VBAT, ADC_FLAG_KEEP_ON) * 17000 / 1024); ccprintf("IBAT = %d mA\n", pmu_adc_read(ADC_IBAT, 0) - * 50 * 40 / 1024); + * (1000 / R_BATTERY_MOHM) * 40 / 1024); ccprintf("PWM = %d%%\n", STM32_TIM_CCR1(3)); battery_current(&val); ccprintf("Battery Current = %d mA\n", val); |