RE: SAADC Battery Measurement Low Outliers

chris — Fri, 06 May 2022 16:09:30 GMT

After some deep searching of the code, I found a timing misalignment that caused a flash write to happen during the battery measurement every seven minutes instead of after the battery measurement.

Thanks for your help.

RE: SAADC Battery Measurement Low Outliers

Edvin — Mon, 02 May 2022 12:02:39 GMT

Hello,

Can you please share what your battery_level_save() function looks like?

I see that you are doing this on a custom board. Did you test it on a DK as well? Do you see the same behavior there?

Are you powering anything else from your nRF?

Did you try to measure the VDD voltage using another tool when the low level occurs? Does the voltage actually drop?

Can you think of anything other in your application that can draw current around every 7 minutes?

Best regards,

Edvin