CubeMX lets you choose 4 voltages.Option/Value 0 should be 2.5V jnstead of the mentioned 2.048VOption/Value 1 should be 2.048 instead ogf the mentioned 2.5VProof: When you select 2.5V it generates 2.048 on the VREF output.

This is the code that is missing (and i had to add myself):ADC_INJ_InitStruct.TriggerSource = LL_ADC_INJ_TRIG_SOFTWARE; ADC_INJ_InitStruct.SequencerLength = 2; ADC_INJ_InitStruct.SequencerDiscont = LL_ADC_INJ_SEQ_DISCONT_DISABLE; ADC_INJ_InitStruct.T...

LL Code generated by the CubeMX:ADC_InitStruct.Resolution = LL_ADC_RESOLUTION_12B; ADC_InitStruct.LowPowerMode = LL_ADC_LP_MODE_NONE; LL_ADC_Init(ADC3, &ADC_InitStruct);The define "LL_ADC_RESOLUTION_12B" should be value "0" (as per ADC3 datasheet).Ho...