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stm32/adc: Fix pyb.ADCAll.read_core_bat on G4 and L4 MCUs.

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Update adc_refcor before reading ADC_CHANNEL_VBAT because VREFINT_CAL is at
VDDA=3.0V.

Signed-off-by: Yuuki NAGAO <wf.yn386@gmail.com>
This commit is contained in:
Yuuki NAGAO 2023-07-08 12:01:01 +09:00 committed by Damien George
parent cb38f77918
commit 409978a1fb
1 changed files with 6 additions and 0 deletions
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6
ports/stm32/adc.c
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@ -905,6 +905,12 @@ float adc_read_core_temp_float(ADC_HandleTypeDef *adcHandle) {
} }
float adc_read_core_vbat(ADC_HandleTypeDef *adcHandle) { float adc_read_core_vbat(ADC_HandleTypeDef *adcHandle) {
#if defined(STM32G4) || defined(STM32L4)
// Update the reference correction factor before reading tempsensor
// because VREFINT of STM32G4,L4 is at VDDA=3.0V
adc_read_core_vref(adcHandle);
#endif
#if defined(STM32L152xE) #if defined(STM32L152xE)
mp_raise_NotImplementedError(MP_ERROR_TEXT("read_core_vbat not supported")); mp_raise_NotImplementedError(MP_ERROR_TEXT("read_core_vbat not supported"));
#else #else