nRF 52840 infinite loop in mesh bootloader after restart

RE: nRF 52840 infinite loop in mesh bootloader after restart

Mttrinh — Fri, 04 Feb 2022 16:03:43 GMT

Hi,

Thanks for the clarification.

It seems strange that only one of your board sees this issue, it might be a unique case like you said. The issue might be related to calibration of the RC oscillator, but I would recommend you do some debugging and go through the code step by step and see what is happening. Do you get any return code on the device?

RE: nRF 52840 infinite loop in mesh bootloader after restart

attila-v — Wed, 02 Feb 2022 17:23:11 GMT

hi,

Sorry I was not clear!
the original problem is that there is a board which goes into infinite loop after calling the 'mesh_stack_device_reset()' function from the fw.
another ten boards are working fine.

all the eleven boards are the totally same construction (custom hw, custom bootloader, custom fw).
if I remove this code snippet from bootloader:

while (!NRF_CLOCK->EVENTS_DONE);

then the problematic board will be fine too
but it is a workaround only - that's why I said that the problem is solved, but the error is still exists.

best regards,

Attila

RE: nRF 52840 infinite loop in mesh bootloader after restart

Mttrinh — Wed, 02 Feb 2022 16:55:31 GMT

Hi,

Since the board is custom and the bootloader is modified it is hard to say what the issue is.

[quote user="attila-v"]

when I removed this snippet of code then the problem is solved, but the error is still exists...

another 10 boards are working fine without this modofocation, is it possible that this is a unique problem?

[/quote]

Confused by this. What do you mean by "problem is solved, but the error stil exists"? Seems like it isnt solved. And by snippet do you mean the modifications made to the bootloader?

[quote user="attila-v"]another 10 boards are working fine without this modofocation, is it possible that this is a unique problem?[/quote]

By modiifcations, I assume you mean the ones you made ot the bootloader? The 10 other board, were they all custom boards or DKs?

RE: nRF 52840 infinite loop in mesh bootloader after restart

attila-v — Mon, 31 Jan 2022 13:31:56 GMT

hi,

thank you!

nRF5SDK - BLE Mesh v3.1.0

the board is custom and the bootloader is modified by me (https://devzone.nordicsemi.com/f/nordic-q-a/63840/application-update-with-mesh-sdk)

when I removed this snippet of code then the problem is solved, but the error is still exists...

another 10 boards are working fine without this modofocation, is it possible that this is a unique problem?

that's why my original question was, has anyone encountered this situation?

RE: nRF 52840 infinite loop in mesh bootloader after restart

Mttrinh — Mon, 31 Jan 2022 12:34:32 GMT

Hi,

Can you give me more details about your setup? Which Mesh SDK are you using?

Are you using an unmodified example from the SDK?

What board are you using?