Hi,
I have a nrf9160 device up running for a month and everything looked good. But suddenly it started rebooting periodically, until there is no connection completely. There is watchdog and other scheduled timer to reboot the device in case it gets stuck somewhere or the link is lost.
The RSRP is between 25 and 29 in the area when such reboot happens.
when it reboots, it is able to connect to the nework, send udp packet and receive ack back. However, after sending 5 packets, it reboots again. This scenario repeats 17 times and then there is no reboot and no connection afterwards forever. And even reboot the device manually, it won´t get connected to the network.
And it can not connect to the network even after taking the device to area with good signal quality around 80 rsrp.
I have following questions
- After a connection is established and the signal is really weak, when sending the udp packet during PSM mode, if there is issue to connect to the basestation after waking up during RRC setup, will modem reboots by itself? If not, will it asserts and halt the cpu?
- Do you know what kind of failure can prevent the modem from connecting to the basestation forever? When it fails to connect, I did notice the current went up high just for one second, back to no constant current and then repeat this pattern every 30 seconds. Usually the current changes quite frequently if tries to connect to the network.
NCS 1.2.0 and modem 1.2 is used. Seems there is issue to debug with Ozone, and I can not see how the code is executed with elf file.(Opened the other ticket about debugging issue)
Thanks for reading the bug report and looking forward to your reply.
