__LL_ADC_CALC_VREFANALOG_VOLTAGE returns unexpected result

[Jorgie]

I am using a Nucleo-u083rc to run the ADC_MultiChannelSingleConversion Application from STM32Cube MCU Package for STM32U0 series `

However, when using the helper function the value returned is completely wrong:

 uhADCxConvertedData[1] = 1503. Which is what I'd expect, however, the value returned by the helper function is 65185.

 

uhADCxConvertedData_VrefAnalog_mVolt = __LL_ADC_CALC_VREFANALOG_VOLTAGE(uhADCxConvertedData[1], LL_ADC_RESOLUTION_12B);

 

This means the following code returns the wrong values

 

 /* Computation of ADC conversions raw data to physical values */
 /* using LL ADC driver helper macro. */
 uhADCxConvertedData_VoltageGPIO_mVolt = __LL_ADC_CALC_DATA_TO_VOLTAGE(uhADCxConvertedData_VrefAnalog_mVolt, uhADCxConvertedData[0], LL_ADC_RESOLUTION_12B);
 uhADCxConvertedData_VrefInt_mVolt = __LL_ADC_CALC_DATA_TO_VOLTAGE(uhADCxConvertedData_VrefAnalog_mVolt, uhADCxConvertedData[1], LL_ADC_RESOLUTION_12B);
 hADCxConvertedData_Temperature_DegreeCelsius = __LL_ADC_CALC_TEMPERATURE(uhADCxConvertedData_VrefAnalog_mVolt, uhADCxConvertedData[2], LL_ADC_RESOLUTION_12B);

 

If I replace the previous code with the following:

 

 /* Computation of ADC conversions raw data to physical values */
 /* using LL ADC driver helper macro. */
 uhADCxConvertedData_VoltageGPIO_mVolt = __LL_ADC_CALC_DATA_TO_VOLTAGE(VDDA_APPLI, uhADCxConvertedData[0], LL_ADC_RESOLUTION_12B);
 uhADCxConvertedData_VrefInt_mVolt = __LL_ADC_CALC_DATA_TO_VOLTAGE(VDDA_APPLI, uhADCxConvertedData[1], LL_ADC_RESOLUTION_12B);
 hADCxConvertedData_Temperature_DegreeCelsius = __LL_ADC_CALC_TEMPERATURE(VDDA_APPLI, uhADCxConvertedData[2], LL_ADC_RESOLUTION_12B);

 

The correct values are calculated for:

huADCxConvertedData_VoltageGPIO_mVolt and

hADCxConvertedData_Temperature_DegreeCelsius

What am I missing about the helper macro?

Regards

Sean