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AWR2944: 2944EVM GPADC read value

wu qiang
Prodigy 240 points
Part Number: AWR2944

Tool/software:

I want to use gpadc to get the voltage of 2944 EVM,I have few questions:

1、what's mean of 1V8,1V2,1V0?

2、I use single channel gpadc mode to get value of GPADC2,the avgvalue is always 679,what's mean of 679,how can I convert the value '679' to real voltage?

  • +1
    TI__Mastermind 29985 points

    Hello,

    The 1.2V, 1.8V, and 1.0V are the supply voltages from the PMIC which are being monitored by GPADC1,2,3.

    To convert to voltage you would compute the same as any other ADC.

    V = (ADCcode * ADCref)/(2^bits) = (679*1.8)/(2^10) = 1.19V.\

    Regards,

    Adrian