Resolved! STM32G4 HAL does not support ADC_CHANNEL_0. Bug?
We are using the ADC on an STM32G4xx for a safety project. The safety manual requires us to read VSS or VDD for ADC diagnostics. STM32G4 has ADC channel 0 internally connected to VSSA, so we are trying to use HAL_ADC_ConfigChannel() to configure ADC_...