Device rebooting every hour

IoT Gateways FX30
1

Hi,

My FX30S device keeps rebooting every hour. These are the last lines written to logread before the device reboots:

Apr 17 13:59:54 fx30s user.debug lowtempfix: tmrHandler returns temperature as 32
Apr 17 13:59:54 fx30s user.info Legato:  INFO | dcsDaemon[1321]/dcsCellular T=main | dcsCellular.c DcsCellularConnEventStateHandler() 257 | State of connection 1 transitioned from up to down
Apr 17 13:59:54 fx30s user.info Legato:  INFO | dcsDaemon[1321]/dcsCellular T=main | dcsCellular.c le_dcsCellular_RetryConn() 1332 | Initiated retrying connection 1; retry attempt 1, backoff 1 secs
Apr 17 13:59:54 fx30s user.info Legato:  INFO | dcsDaemon[1321]/dcsCellular T=main | dcsCellular.c DcsCellularConnEventStateHandler() 315 | Wait for the next retry before failing connection 1
Apr 17 13:59:54 fx30s user.info Legato:  INFO | dcsDaemon[1321]/dcsDaemon T=main | dcsServer.c ChannelEventHandler() 909 | Received for channel reference 0x33 event Temporary Down
Apr 17 13:59:54 fx30s user.info Legato:  INFO | dcsDaemon[1321]/dcsNet T=main | dcsNet.c net_RestoreDefaultGW() 656 | Default IPv4 GW address  on interface  restored

I can see that the reboot reason is Reset, User expected when I run cm info:

Device:                        FX30S(WP7702)
IMEI:                          ############
IMEISV:                        8
FSN:                           ############
Firmware Version:              SWI9X06Y_02.36.08.09 c094f4 jenkins 2022/06/24 03:14:28
Bootloader Version:            SWI9X06Y_02.36.08.09 c094f4 jenkins 2022/06/24 03:14:28
MCU Version:                   002.015
PRI Part Number (PN):          9907957
PRI Revision:                  001.000
Carrier PRI Name:              GENERIC
Carrier PRI Revision:          001.079_000
SKU:                           1103882
Last Reset Cause:              Reset, User Requested
Resets Count:                  Expected: 141    Unexpected: 5
FX30 Version:                  R15.1.0.004

The device is running a custom app that sends data to Azure iot hub, I can see that the app runs fine in between these reboots and the data connection is up.

How can I identify why the device is rebooting? Is it possible to disable the auto-reboot to keep the device in the faulty state and debug it?

2

How did you establish data connection?

How about using “cm data connect &” before connecting azure server?

3

When the app starts it calls le_data_Request() to start the data connection.

4

How about using “cm data connect &” before connecting azure server?

Do you see this isse in previous FW R14?

How about disable edrx feature?

AT+CEDRXS=0

5

EDRX is already disabled.
We started developing the app on release 15, we have not tried it on release 14.

How can I get more info about the reboot reason?

6

Did you have the uart console?
It should print more debug message if module crashes.

Did you run in sandboxed app?

How about using “cm data connect &” before connecting azure server?

7

The app is unsandboxed.
The uart console is not attached but I save the logs to the internal flash with

logread -f >>/home/root/logreadDir/continuouslog

Will the console print more data than what logread outputs?

8

I think it will print where it crashes

Why don’t you try sandboxed app?

How about using “cm data connect &” before connecting azure server?

It is also worth to try in fw r14 to get more clue