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STM32L4 ADC VBAT CHANNEL

pull/9252/head
jeromecoutant 2019-01-03 17:28:53 +01:00
parent 070bf2f715
commit 164fee0e61
1 changed files with 7 additions and 0 deletions
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7
targets/TARGET_STM/TARGET_STM32L4/analogin_device.c
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@ -193,6 +193,13 @@ uint16_t adc_read(analogin_t *obj)
// Wait end of conversion and get value // Wait end of conversion and get value
if (HAL_ADC_PollForConversion(&obj->handle, 10) == HAL_OK) { if (HAL_ADC_PollForConversion(&obj->handle, 10) == HAL_OK) {
/* Ref Manual: To prevent any unwanted consumption on the battery,
it is recommended to enable the bridge divider only when needed for ADC conversion */
if (sConfig.Channel == ADC_CHANNEL_VBAT) {
CLEAR_BIT(__LL_ADC_COMMON_INSTANCE(obj->handle.Instance)->CCR, LL_ADC_PATH_INTERNAL_VBAT);
}
return (uint16_t)HAL_ADC_GetValue(&obj->handle); return (uint16_t)HAL_ADC_GetValue(&obj->handle);
} else { } else {
return 0; return 0;