TMS570LC4357: ADC1[31] result

user5093781

Part Number: TMS570LC4357

Hi.

We use ADC1[31], but the conversion result is strange.

It is connected as follows. If only the ADC1[31] is converted, the conversion result will be about 50.

but If only the ADC1[9] is converted, the conversion result will be 4095.

Are there any settings for using ADC1[31]?

Best regards.

0 QJ Wang over 4 years ago

What is the configured sampling time for AD1IN[31]? Can you increase the sampling time to see if that affects the accuracy of the conversions?

+1 QJ Wang over 4 years ago in reply to QJ Wang

Hello,

NOTE: To use AD1IN[31], PINMMR174[24] must be cleared to 0. (TRM 6.5.13)

Is PINMMR174[24] cleared in your code?

+1 user5093781 over 4 years ago in reply to QJ Wang

Hi.

Thanks QJ.

Arm-based microcontrollers forum