nrf9160 network connection

[Hkhan7861]

Good day

I have a custom board using an nrf9160 device.  On the board I am running a variation of a lwm2m client.  I have a question regarding a network connection.  Why is it that sometimes the modem will not connect to the network without a hard reboot.  Is there any reason why this is happening and how do i mitigate it? I am using SDK version 2.5.0

Thank you !

[Hakon]

Hello,

Is there any reason why this is happening and how do i mitigate it?

of course there should be a reason for this, but it's hard to tell with out AT cmd logs and so forth. How to mitigate would probably depend on the reason for not connecting. Again, include logs and preferably also modem traces so the issue can be identified.

[Hkhan7861]

Hi Hakon 

unfortunately i don't have access to the devices as they are far away.  They were running for a couple of months but suddenly lost connection due to a known network outage.  Usually they are able to connect again when the network comes back. Other devices in the vicinity were able to find a connection again. Im just wondering if a reboot namely "sys_reboot(0)" would cause any issues when the modem attempt to connect again.

[Hakon]

Hkhan7861 said:

Im just wondering if a reboot namely "sys_reboot(0)" would cause any issues when the modem attempt to connect again.

It depends if you shut down the modem before rebooting. Rebooting without making sure the modem is an a safe state could cause issues.

[Hkhan7861]

Oh i see that makes sense.  However, wouldn't reinitiating the modem on startup make the modem usable again?  What would be the best course of action if the device were to lose power suddenly and reboot itself ?

Thank you in advance,

Hassan