Asset Tracker V1 Spontaneous reboots

RE: Asset Tracker V1 Spontaneous reboots

Albrecht Markus Schellenberger — Fri, 07 May 2021 13:29:21 GMT

Thanks for the feedback, Billy!

Yes, in general the application will restart after a reset. Normally you can prevent this by adding:

CONFIG_RESET_ON_FATAL_ERROR=n

to your prj.conf.

The error handling of the asset tracker is a little bit different, though.

Do you face the same issue when you are running the application without using the debugger?

Regards,

Markus

RE: Asset Tracker V1 Spontaneous reboots

billywalton — Fri, 07 May 2021 13:12:56 GMT

Hi Markus,

After it restarts, i usually see the following in the log

[00:01:05.799,316] [0m<inf> asset_tracker: LTE cell changed: Cell ID: 131288194, Tracking area: 1392[0m
[00:01:05.906,982] [0m<inf> asset_tracker: RRC mode: Connected[0m
[00:01:11.716,094] [0m<inf> asset_tracker: RRC mode: Idle[0m
[00:01:11.847,137] [0m<inf> asset_tracker: RRC mode: Connected[0m
[00:01:16.878,204] [0m<inf> asset_tracker: RRC mode: Idle[0m
[00:01:17.013,397] [0m<inf> asset_tracker: RRC mode: Connected[0m
[00:01:18.433,776] [0m<dbg> nrf_cloud_transport.nct_mqtt_connect: mqtt_connect failed -104[0m
[00:01:18.434,295] [1;31m<err> nrf_cloud: nRF cloud connect failed -104[0m
[00:01:18.434,722] [0m<dbg> nrf_cloud.api_event_handler: NRF_CLOUD_EVT_TRANSPORT_CONNECTING[0m
[00:01:18.435,180] [1;31m<err> nrf_cloud: nRF cloud connect failed -5[0m
[00:01:18.435,607] [0m<inf> asset_tracker: CLOUD_EVT_CONNECTING[0m
[00:01:18.435,974] [1;31m<err> asset_tracker: Failed to connect to cloud, error -5[0m
[00:01:18.436,431] [1;31m<err> asset_tracker: Device will reboot in 300 seconds[0m
[00:01:18.436,889] [1;31m<err> asset_tracker: LTE link disconnect[0m
[00:01:19.912,231] [0m<inf> asset_tracker: RRC mode: Idle[0m
[00:01:20.049,072] [1;31m<err> asset_tracker: Shutdown modem[0m

and the cloud will not reconnect until I cycle power

RE: Asset Tracker V1 Spontaneous reboots

billywalton — Fri, 07 May 2021 13:09:02 GMT

Hi Markus,

Thanks, I am running this under the debugger, which is whats strange, as if there was a fault I would have expected it to stop execution

But It just continues as nothing is wrong....

Is this normal behaviour?

RE: Asset Tracker V1 Spontaneous reboots

Albrecht Markus Schellenberger — Fri, 07 May 2021 13:06:33 GMT

Hello Billy,

A good starting point could be to check the reset reason register.

You can do that via the debugger interface using the following bash-command:

$ nrfjprog --memrd 0x40005400

I hope this will help you!

Regards,

Markus