ADC Oversample with Scan - sanity check question

RE: ADC Oversample with Scan - sanity check question

AHaug — Mon, 07 Jul 2025 12:58:01 GMT

Hi,

Both quotes below, i.e "Read first channels x256 times then read second channels x256 times should be correct" and the comments from Carstein are coming from a discussion with engineers who are familiar with the adc hardware implementation on the nrf52810

Let me know if you have any follow up questions or if that answer keeps both of us on the sane side of the sanity check!

Kind regards,
Andreas

RE: ADC Oversample with Scan - sanity check question

snoopy20 — Mon, 07 Jul 2025 12:29:22 GMT

It's my understanding as well, but under-the-hood it might be doing each in sequence when multiple channels are enabled. It would need an engineer familiar with the underlying hardware implementation to verify.

RE: ADC Oversample with Scan - sanity check question

AHaug — Mon, 07 Jul 2025 12:27:06 GMT

Anyways, Read first channels x256 times then read second channels x256 times should be correct. See RE: How does the SAADC "Scan" mode use the "BURST=1" for more details. Carstens answer matches my understanding of it atleast

Kind regards,
Andreas

RE: ADC Oversample with Scan - sanity check question

AHaug — Mon, 07 Jul 2025 12:22:26 GMT

So nRF5/bare metal, then?

Kind regards,
Andreas

RE: ADC Oversample with Scan - sanity check question

snoopy20 — Mon, 07 Jul 2025 11:41:53 GMT

I'm not, direct manipulation.

RE: ADC Oversample with Scan - sanity check question

AHaug — Mon, 07 Jul 2025 11:37:18 GMT

Hi,

Could you specify which SDK you're working with?

Kind regards,
Andreas