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TMS320F28P550SG: [FAQ]: F28P550 ADC external reference configuration in sysconfig

Stevan Duraskovic
Expert 7270 points

Part Number: TMS320F28P550SG
Other Parts Discussed in Thread: SYSCONFIG

Hi team,

There is an ADC reference configuration bug in the sysconfig. When I select "Analog reference" as "external", there is no button used to configure "ADC_REFERENCE_3_3V" or "ADC_REFERENCE_2_5V"

image.png

  • 0
    TI__Expert 7270 points

    To configure full-scale external ADC VREFHI (0V- VREFHI) in syscfg following steps needs to be followed:

    1. Select " internal' and "ADC_REFERENCE_2_5V" 

    image.png

    2. Switch " internal' to "external". This way, the external VREFHI is enabled. Please give another check in generated files board.c to make sure change applied correctly.

    image.png