nRF9160 how to detect network detach?

RE: nRF9160 how to detect network detach?

Lukáš — Mon, 03 Feb 2020 16:26:28 GMT

We are facing the same issue. AT+CEREG notification won't tell you when you are disconnected immediately. In NB-IoT networks, you have to wait a few dozen seconds.

RE: nRF9160 how to detect network detach?

jbrzozoski — Mon, 03 Feb 2020 14:16:44 GMT

Currently the lte_lc library doesn't provide that. The only way to get it is to use the at_notif library, register a handler, and make sure the CEREG notifications are enable by sending an "AT+CEREG" command to the modem.

RE: nRF9160 how to detect network detach?

Bjorn191023 — Mon, 03 Feb 2020 07:08:38 GMT

[quote userid="77106" url="~/f/nordic-q-a/57233/nrf9160-how-to-detect-network-detach/232164"]The expected method is by calling lte_lc_nw_reg_status_get[/quote]

Thanks. Is there a way to get an event when network is detached instead of polling through function lte_lc_nw_reg_status_get?

RE: nRF9160 how to detect network detach?

jbrzozoski — Fri, 31 Jan 2020 20:44:35 GMT

The expected method is by calling lte_lc_nw_reg_status_get. A registration status of HOME or ROAMING means you are attached. Note that there is some delay in falling from HOME/ROAMING back to SEARCHING after you move out of range of a tower or lose signal for some other reason.