LAUNCHXL-CC1352P: ADC value is lower than the expectation

Yonghua Pan

Intellectual 1900 points

Part Number: LAUNCHXL-CC1352P
Other Parts Discussed in Thread: CC1352P

Hi,

Sensor controller studio to run the example "ADC Window Monitor" on CC1352P Launchpad, the adc value is only ~3140 while I connect DIO23(ADC pin) to 3V3.

Would you let me know if anything needs to be configured?

Regards,

Yonghua

over 5 years ago

0 TER over 5 years ago

TI__Guru**** 317180 points

Please read the documentation:

"The ADC values returned by adcReadFifo() are not compensated for offset and gain errors in the ADC. This compensation, using factory configuration data stored during chip production, can be done by using the AUX_ADC DriverLib module on the System CPU"

http://dev.ti.com/tirex/explore/node?a=VLyFKFf__3.6.2&node=AELYQDJk05V9HD6.72FWyw__FUz-xrs__LATEST&r=VLyFKFf__LATEST

0 Yonghua Pan over 5 years ago in reply to TER

TI__Intellectual 1900 points

Yes, I've read the document. Does it mean System CPU should be waken up if we want to get the adjusted ADC value?

0 TER over 5 years ago in reply to Yonghua Pan

TI__Guru**** 317180 points

Yes, that what the documentation state.

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LAUNCHXL-CC1352P: ADC value is lower than the expectation