ADC_CHANNEL_VOPAMP? definitions in stm32f3xx_hal_adc_ex.h from STM32CubeF3 are wrong

alexander2399 · ‎2014-10-04

Posted on October 04, 2014 at 19:08

They are aliases of channels 15,17,17,17 for ADC 1-4 correspondingly. According to STM32F303VC reference they should by aliases of channels 3,3,1,3. Firmware works correctly only when they are set according to reference.

stm32f3xx_hal_adc_ex.h is version V1.0.1 from 18-June-2014

#stm32f303vct6-stm32cubef3

Amel NASRI · ‎2014-10-06

Posted on October 06, 2014 at 18:48

Hello Alexander,

ADC_CHANNEL_VOPAMPx are the reference voltage for the OPAMPx connected to ADC. If you refer to RM0316:

- ADC1_IN15 = VREFOPAMP1= Reference Voltage for the Operational Amplifier 1

- ADC2_IN17 = VREFOPAMP2= Reference Voltage for the Operational Amplifier 2

- ADC3_IN17 = VREFOPAMP3= Reference Voltage for the Operational Amplifier 3

- ADC4_IN17 = VREFOPAMP4= Reference Voltage for the Operational Amplifier 4

If you need to use OPAMP output as ADC inputs, the other channels (ADC1_IN3, ADC2_IN3, ADC3_IN1, ADC4_IN3) have to enabled.

-Mayla-

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alexander2399 · ‎2014-10-07

Posted on October 07, 2014 at 17:40

Thank you, Mayla, I've got confused.