Compute RMS from SAADC sample buffer

RE: Compute RMS from SAADC sample buffer

Gregory Woods — Wed, 21 Nov 2018 08:00:35 GMT

The longer you live, the more you learn.
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Jakub — Tue, 07 Aug 2018 12:42:14 GMT

Ok, thank you for your help ;)

Håkon Alseth — Tue, 07 Aug 2018 12:36:46 GMT

Yes, you can use arm_math and other math/dsp-libraries if you require those.

Cheers,

Håkon

Jakub — Tue, 07 Aug 2018 12:05:03 GMT

would it be ok if I use arm_math.h to compute RMS value of collected samples?

Håkon Alseth — Tue, 07 Aug 2018 12:01:06 GMT

Hi,

We do not have any libraries for this specifically.

You could use SAADC oversampling, or manually sample 'n' amount of times and average this.

Best regards,

Håkon