3~5% portion of nRF52832 chips does not start without debugger

[knowic]

Hello,

We are experiencing an issue that some of the nRF52832 is not starting up automatically. But we attached it with JLINK
debugger and didn't do anything, it can boot smoothly. There are 3~5% portion with this case of 400~500pcs production.

We have checked with this post, but we haven't enable "--specs=rdimon.specs" option with the linker.

https://devzone.nordicsemi.com/f/nordic-q-a/14618/nrf52-does-not-start-without-debugger

Do you have any suggestions as to what could be the reason?

Many thanks, JasonHu

[Edvin]

Hello JasonHu,

It is a bit difficult to say exactly what the issue is. What SDK version are you using?

Do you have any way of knowing what that is going on without debugging? Is logging an option? Are you able to reproduce it on a DK? Or only on custom PCB?

Maybe this is what you are seeing? At least it is worth a shot.

Depending on your SDK version, if you enable logging, you should be able to see why the application stops. Alternatively, give some other way of outputting the information from the error handler. Is that an option?

Best regards,

Edvin