RTOS/CC2640R2F: Multiple channel ADC conversion with uDMA

GOHM ELECTRONICS

Expert 2085 points

Part Number: CC2640R2F

Tool/software: TI-RTOS

Hi,

I'm using Sable-x R2 (CC2640R2F 5XD) with simplelink_cc2640r2_sdk_1_50_00_58 SDK. I can get samples from one ADC channel by using adcbufcontinuous example. Is there a way to use uDMA with 4 channels?

over 7 years ago

0 IUsedToBeARealPerson (M-W) over 7 years ago

TI__Guru 58425 points

Hi,

The ADCBuf driver can only sample one channel at a time. It is also a limitation in the hardware, where you can't sample simultaneously as all the analog inputs share the same ADC.

If you need to sample four different channels, you will have to walk over them one at a time.

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RTOS/CC2640R2F: Multiple channel ADC conversion with uDMA