on connection, the modem gets reset after ~ 1 minute from activation:
[00:00:00.421,386] <dbg> nrf_cloud_transport.nct_topics_populate: shadow_get_topic: $aws/things/nrf-352656100222853/shadow/getConnecting to LTE network. This may take several minutes.[00:00:00.438,995] <dbg> lte_lc.w_lte_lc_connect: Network mode: AT%XSYSTEMMODE=1,0,0,1[00:00:02.776,672] <dbg> lte_lc.at_handler: recv: +CEREG: 2,"035D","00378620",7,0,0,"11100000","11100000"
[00:00:03.656,738] <dbg> lte_lc.at_handler: recv: +CEREG: 1,"035D","00378620",7,,,"11100000","11100000"
Connected to LTE network[00:00:03.842,681] <dbg> nrf_cloud_transport.nct_connect: IPv4 Address 0x5f7ee722Socket error: POLLHUPLTE link disconnectShutdown modem***** Booting Zephyr OS build v1.14.99-ncs3-snapshot2-2074-ga2c36f15843f *****
I erased the device from NRF cloud, but this issue still occure, please advice.
happen on two devices, I use the same SIM card for both devices
You should all try to run the following guide (again if already done): https://devzone.nordicsemi.com/nordic/cellular-iot-guides/b/getting-started-cellular/posts/nrf-cloud-certificate-update
If you are…
Ok, then make sure the kits IMEI number, the clientId above(used for delete) and the clientId inside the downloaded certificate JSON file all matches. Both clientId should be nrf-<IMEI>. If all that matches…
Ok, there has been some updates to the certificate recovery procedure, please run through the updated guide step-by-step.https://devzone.nordicsemi.com/nordic/cellular-iot-guides/b/getting-started-cellular…
I have a same problem. I cannot add the nRF9160-DK to nRF cloud because the device will not go to the pairing state(getting Socket error: POLLHUP). I have an old devkit without a PIN. I have updated the modem SW and also certificates. Device was working earlier and suddenly stop working so i removed the device from the nRF cloud. Now try to add it back.
exactly my issue!
I have even done the following steps:
1. removed the device from cloud
2. completely deleted my account and opened a new one
3. replaced both SIM card and board
4. updated modem FW
I too have an old devkit without a PIN (but new HW version 0.8.5)
it also worked for me very well until last week
I suspect it's due to a new update on NRF cloud ...
If you are updating the certificates on a kit without PIN, its important to remember that after running through the above steps the kit should be added to nRF Cloud using the IMEI and PIN/HWID method, not the legacy button and switch method.
did all the steps described:
updated certificates successfully
deleted device from cloud
tried to register device to cloud
device still reset for the same reason
PCA10090, HW version 0.8.5
*note this board worked fine until ~ 8 days ago.
Ok, try to make sure the device is completely removed by using the curl command from the guide to delete the device.