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MADHESHWARAN_S
Associate
February 11, 2024
Solved

STM32H563ZITx series ADC conversion-Reg

  • February 11, 2024
  • 2 replies
  • 2450 views

Tried implementing ADC conversion on STM32H563ZI Nucleo board. But, getting only a constant value like 66,67,68,69 in serial monitor(Tera term) irrespective of the given input even the i/p is unplugged getting the same values. Need a help to fix this. Thanks in advance!

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Best answer by AScha.3

Did you set the sequence for ADC1 in Cube (even if regular conversion -> only one "rank" ) ?

ie :

AScha3_0-1707660551724.png

 

 

+

first need calibrate the adc , to get good precision, use :  HAL_ADCEx_Calibration_Start(..);

2 replies

AScha.3
AScha.3Best answer
Super User
February 11, 2024

Did you set the sequence for ADC1 in Cube (even if regular conversion -> only one "rank" ) ?

ie :

AScha3_0-1707660551724.png

 

 

+

first need calibrate the adc , to get good precision, use :  HAL_ADCEx_Calibration_Start(..);

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    TDK
    TDK
    February 11, 2024

    PA4 (ADC1_IN18) is VBUS_SENSE on that board, unless you disconnect it by removing SB56.

    > sConfig.SamplingTime = ADC_SAMPLETIME_2CYCLES_5;

    Probably insufficient sampling time for most application.

    Calibration is required before using the ADC.

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