diff options
| author | yn386 <wf.yn386@gmail.com> | 2022-10-22 16:56:56 +0900 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2022-11-18 14:38:58 +1100 |
| commit | 2154ee21635c85baf07e50ca1bfaf8c89cae192a (patch) | |
| tree | 436236c86a29ab8dfc0eef96d17f0bf1c15d09e9 | |
| parent | a74e4fabeb0d7bc4dc68284047248fa173f5237b (diff) | |
stm32/adc: Fix reading internal ADC channels on L4 MCUs.
For STM32L4 series, the internal sensors are connected to:
- ADC1_IN0: Internal voltage reference
- ADC1_IN17: Temperature sensor
- ADC1_IN18: VBAT battery voltage monitoring
but ADC_CHANNEL_VREFINT, ADC_CHANNEL_VBAT, ADC_CHANNEL_TEMPSENSOR are not
defined as 0, 17, 18.
This commit converts channel 0, 17, 18 to ADC_CHANNEL_x in
adc_get_internal_channel().
| -rw-r--r-- | ports/stm32/adc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/ports/stm32/adc.c b/ports/stm32/adc.c index 02bbbb58d..5aa7ce426 100644 --- a/ports/stm32/adc.c +++ b/ports/stm32/adc.c @@ -216,6 +216,14 @@ static inline uint32_t adc_get_internal_channel(uint32_t channel) { if (channel == 16) { channel = ADC_CHANNEL_TEMPSENSOR; } + #elif defined(STM32L4) + if (channel == 0) { + channel = ADC_CHANNEL_VREFINT; + } else if (channel == 17) { + channel = ADC_CHANNEL_TEMPSENSOR; + } else if (channel == 18) { + channel = ADC_CHANNEL_VBAT; + } #endif return channel; } |