Hi all, am using stm32l4S5IT microcontroller for reading internal temperature ,VBAT and vref but not able to read the exact values of each one ,

Vref is giving - 5200- 5700 mv but my source is (3300) max

VBAT - 3600 mv

Temp- 170 degrees

not able to get why it giving that difference and my configurations are as per the example cube library

Note: my Vref value is using as VREFANALOG_VOLTAGE for VBAT and Temperature

Thanks in Advance

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Principal

Have you performed the ADC calibration step before running measurements?

Associate

Yes i performed.

HAL_ADCEx_Calibration_Start(&hadc1, ADC_SINGLE_ENDED);

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