nRF9160 Help needed to find reset / reboot cause

RE: nRF9160 Help needed to find reset / reboot cause

Patriku — Wed, 22 Jun 2022 19:05:31 GMT

Hi Markus,

So, I've done some more testing with the extra logging enabled, the first time it ran for about 5 days and the other time about 1 day before resetting. Unfortunately nothing related to the error or any hints of the reset was outputted before the reset. Still getting RESETPIN as reset reason.

I have another Thingy91 that I'll do the same test on and see if i get the same issue in case it could be some hardware related issue or something.

Do you have any other suggestions?

/Patrik

RE: nRF9160 Help needed to find reset / reboot cause

Patriku — Wed, 22 Jun 2022 18:50:40 GMT

[quote userid="112435" url="~/f/nordic-q-a/88970/nrf9160-help-needed-to-find-reset-reboot-cause/373178"]Integrating Memfault may be helpful for this type of problems. The library installs a fault handler that analyses the fault and stores the result in a RAM section that is not overwritten by the reboot. After reboot the data can be uploaded to the Memfault backend and analysed.[/quote]

Hi, I'll have a look into Memfault unfortunately it seems like it's not available straight out of the box for nRF Connect SDK: 1.5.1, it looks like it was added in 1.6.0. Anyhow I don't think it would be much work to just add the specific parts I need like the fault handler.

RE: nRF9160 Help needed to find reset / reboot cause

asprenger — Mon, 20 Jun 2022 09:13:12 GMT

Integrating Memfault may be helpful for this type of problems. The library installs a fault handler that analyses the fault and stores the result in a RAM section that is not overwritten by the reboot. After reboot the data can be uploaded to the Memfault backend and analysed.

RE: nRF9160 Help needed to find reset / reboot cause

Patriku — Wed, 15 Jun 2022 18:49:56 GMT

Hi,

[quote userid="100109" url="~/f/nordic-q-a/88970/nrf9160-help-needed-to-find-reset-reboot-cause/372574#372574"]Interestingly enough, the Thingy91 has no reset pin connected by default. Have you done any modifications to the board, maybe? [/quote]

No hardware modifications has been done, it's straight out of the box. Anyhow I see now in the documentation regarding RESETREAS register that it should be cleared, which I haven't been doing.

[quote userid="100109" url="~/f/nordic-q-a/88970/nrf9160-help-needed-to-find-reset-reboot-cause/372574#372574"]

What I probably would do at this point is to enable debug logging for the libraries/modules your application is using, like e.g.

[/quote]

I'll enable some more logging and get back to you.

/Patrik

RE: nRF9160 Help needed to find reset / reboot cause

Albrecht Markus Schellenberger — Wed, 15 Jun 2022 12:37:46 GMT

Hello Patrik,

[quote user=""]When getting the reset reason with nrf_power_resetreas_get(NRF_POWER) I get RESETPIN (NRF_POWER_RESETREAS_RESETPIN_MASK)[/quote]

Interestingly enough, the Thingy91 has no reset pin connected by default. Have you done any modifications to the board, maybe?

[quote user=""]Would a modem trace provide some details or is it only used for analyzing the communication between the device and the LTE network?[/quote]

A modem trace helps to analyse what the modem does, but even though it would crash it should not cause the application core to crash as well, at least not right away.

[quote user=""]Do you have any additional debugging options I could enable to hopefully get some more insight into why it might reset?[/quote]

What I probably would do at this point is to enable debug logging for the libraries/modules your application is using, like e.g.

Maybe they can provide you with some more information. You probably shouldn’t enable them all at once though, as the output can be huge.

Regards,

Markus