detect brownout on reset

RE: detect brownout on reset

rgrr2 — Wed, 01 Aug 2018 07:15:38 GMT

Although this is old... how can one do a softdevice reset without actually resetting the device?

RE: detect brownout on reset

Dominik — Fri, 01 Jul 2016 12:42:15 GMT

Thanks for your input. Unfortunately using ADC to monitor the power doesn't work out, our device is connected to the 230V power line, not to a battery. But I think I found a nice solution. I use the power fail comparator, and in case of a warning, I set a brownout flag on the gpregret and force a softdevice reset, before the device actually brownsout. like this I also don't lose the gpregret register and can use the info after the reset.

RE: detect brownout on reset

Stefan Birnir Sverrisson — Wed, 29 Jun 2016 17:00:56 GMT

Hi Dominik

Both answers on this thread might have ideas. Additionally, you could use internal ADC to monitor battery voltage and trigger flash operation in time. Some ADC examples here. There is also adc example in the SDK.

I don't otherwise see a way to know if reset was caused by brownout-reset or power-on-reset.