reset message on flash

RE: reset message on flash

Achim Kraus — Mon, 30 Sep 2024 14:46:45 GMT

Your issue above reported:

<wrn> modem_module: The modem has detected a reset loop.

My answer and the links can only help for the "reset loop". Do you still see that reported?

at+cfun=0

helps only, if the device is not already in the "reset loop". If you read the comments in the first link, that shows how to overcome the 30 min in development even if the device is already in that "reset loop".

RE: reset message on flash

Timothy — Mon, 30 Sep 2024 13:17:40 GMT

Achim

thanks for the quick response. I did do the command you suggested before I flashed and the results are shown below. I still got the same message and I cannot connect to LTE. I am debugging code and I cannot "flash less often". I have been using the nRF9160 and a modified version of asset_tracker_v2 for several years. I have never seen this message before. I have made edits and flashed dozens of times a day all of the time. did something change?

This is a debugging showstopper. I cannot debug code if I have to wait 30 minutes to see if any change I made is working and then wait 30 minutes again to retry. How do I get around this problem?

> at +cfun=0
at +cfun=0
AT+cfun=0: OK

%MDMEV: SEARCH STATUS 2
%CESQ: 255,0,255,0
+CEREG: 0
[00:00:30.942,138] <inf> app_event_manager: MODEM_EVT_LTE_CELL_UPDATE
[00:00:41.270,172] <err> modem_info_params: Link data not obtained: 5 -22

RE: reset message on flash

Achim Kraus — Mon, 30 Sep 2024 06:00:12 GMT

If "flashing" uses a reset, the modem is processing that as any other reset.

It enters the "reset loop", if "too many reset" have been detected.

Modem Reset Loop Restriction Reset

One way to prevent that is to use "AT+CFUN=0" ahead of flashing, or flash less frequently.

For more details, read %MDMEV and Modem Reset Loop Restriction