SAADC output not making sense

RE: SAADC output not making sense

RichieJH — Mon, 05 Sep 2016 16:30:49 GMT

Thanks Stefan,

So I went back to the GitHub example, ran it on the DK. Got 800 odd. Then cleared my custom board and ran the example off that. Got 800 odd. Then went back to my application and replaced my saadc_init() with the example in GitHub and got 800 odd. So now it is working. There must be something in the saadc_init() above that is not right. But it's working now and that's the main thing.

RE: SAADC output not making sense

Stefan Birnir Sverrisson — Mon, 05 Sep 2016 12:31:21 GMT

Hi Richie

I cant see what you are missing. I take the saadc_low_power example and configure it to sample on NRF_SAADC_INPUT_VDD with 10 bit resolution and I get value around 820. I cant see any other change in your configuration that you are showing. Try to sample the standard example and gradually make changes and then you will realize why you get the strange results.