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analog.c: Fix `pinToMux()` for STM32F0xx (#19658) 

The `adc_read()` code for STM32F0xx expects to get the 0-based channel
number in `mux.input`, but the `pinToMux()` code for STM32F0xx was
attempting to pass the CHSELR bit mask in that field, which resulted in
selecting a wrong channel, therefore `analogReadPin()` did not work
properly for the STM32F0xx chips.  Fix `pinToMux()` to put the channel
number in that field (this matches the behavior for other supported
chips and also allows selection of channels 16...18, which can be used
to access the builtin temperature, reference voltage and VBAT sensors).
This commit is contained in:
Sergey Vlasov 2023-01-25 04:47:55 +03:00 committed by GitHub
parent 0edf478a53
commit 81ca83296f
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1 changed files with 16 additions and 16 deletions
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32
platforms/chibios/drivers/analog.c
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@ -138,22 +138,22 @@ static ADCConversionGroup adcConversionGroup = {
__attribute__((weak)) adc_mux pinToMux(pin_t pin) { __attribute__((weak)) adc_mux pinToMux(pin_t pin) {
switch (pin) { switch (pin) {
#if defined(STM32F0XX) #if defined(STM32F0XX)
case A0: return TO_MUX( ADC_CHSELR_CHSEL0, 0 ); case A0: return TO_MUX( 0, 0 );
case A1: return TO_MUX( ADC_CHSELR_CHSEL1, 0 ); case A1: return TO_MUX( 1, 0 );
case A2: return TO_MUX( ADC_CHSELR_CHSEL2, 0 ); case A2: return TO_MUX( 2, 0 );
case A3: return TO_MUX( ADC_CHSELR_CHSEL3, 0 ); case A3: return TO_MUX( 3, 0 );
case A4: return TO_MUX( ADC_CHSELR_CHSEL4, 0 ); case A4: return TO_MUX( 4, 0 );
case A5: return TO_MUX( ADC_CHSELR_CHSEL5, 0 ); case A5: return TO_MUX( 5, 0 );
case A6: return TO_MUX( ADC_CHSELR_CHSEL6, 0 ); case A6: return TO_MUX( 6, 0 );
case A7: return TO_MUX( ADC_CHSELR_CHSEL7, 0 ); case A7: return TO_MUX( 7, 0 );
case B0: return TO_MUX( ADC_CHSELR_CHSEL8, 0 ); case B0: return TO_MUX( 8, 0 );
case B1: return TO_MUX( ADC_CHSELR_CHSEL9, 0 ); case B1: return TO_MUX( 9, 0 );
case C0: return TO_MUX( ADC_CHSELR_CHSEL10, 0 ); case C0: return TO_MUX( 10, 0 );
case C1: return TO_MUX( ADC_CHSELR_CHSEL11, 0 ); case C1: return TO_MUX( 11, 0 );
case C2: return TO_MUX( ADC_CHSELR_CHSEL12, 0 ); case C2: return TO_MUX( 12, 0 );
case C3: return TO_MUX( ADC_CHSELR_CHSEL13, 0 ); case C3: return TO_MUX( 13, 0 );
case C4: return TO_MUX( ADC_CHSELR_CHSEL14, 0 ); case C4: return TO_MUX( 14, 0 );
case C5: return TO_MUX( ADC_CHSELR_CHSEL15, 0 ); case C5: return TO_MUX( 15, 0 );
#elif defined(STM32F3XX) #elif defined(STM32F3XX)
case A0: return TO_MUX( ADC_CHANNEL_IN1, 0 ); case A0: return TO_MUX( ADC_CHANNEL_IN1, 0 );
case A1: return TO_MUX( ADC_CHANNEL_IN2, 0 ); case A1: return TO_MUX( ADC_CHANNEL_IN2, 0 );