Thingy91: Wait until connected

RE: Thingy91: Wait until connected

Jan Tore Guggedal — Wed, 01 Apr 2020 13:32:22 GMT

Hi Max,

The file was moved recently, and is now located here:

https://github.com/NordicPlayground/fw-nrfconnect-nrf/blob/master/include/modem/lte_lc.h

I've updated my original answer accordingly as well.

Best regards,

Jan Tore

RE: Thingy91: Wait until connected

Maxvi33 — Wed, 01 Apr 2020 13:21:04 GMT

Hello,
Thank's for your help!

I can't open your link https://github.com/NordicPlayground/fw-nrfconnect-nrf/blob/master/include/lte_lc.h "page not found"
And i search "blob" section but i don't find anything...

Kind regards
Max

RE: Thingy91: Wait until connected

Jan Tore Guggedal — Tue, 10 Mar 2020 12:41:41 GMT

Hi,

Adding a bit to Heidi's answer, if you want to use a higher level of abstraction in your application.

nRF Connect SDK offers a convenience library for LTE link control: https://github.com/NordicPlayground/fw-nrfconnect-nrf/blob/master/include/lte_lc.h

It offers, among other things, APIs to set modem's system mode and connect/disconnect to LTE network.
To enable it, set CONFIG_LTE_LINK_CONTROL=y in your prj.conf and include the header file.
If you don't want the library to automatically to connect to LTE network on boot, you need to set the following:
CONFIG_LTE_AUTO_INIT_AND_CONNECT=n

I think relevant functions for you to achieve what you want are for example:

lte_lc_system_mode_set(LTE_LC_SYSTEM_MODE_GPS);

lte_lc_normal();

// Do GPS stuff

lte_lc_offline();

lte_lc_system_mode_set(LTE_LC_SYSTEM_MODE_NBIOT);

// Blocking call, tries to connect for 10 minutes by default
lte_lc_init_and_connect();

// Wait for LTE connection...

Best regards,

Jan Tore

RE: Thingy91: Wait until connected

Heidi — Mon, 09 Mar 2020 09:37:51 GMT

Hi!

Yes, there is. The AT command AT+CEREG? lets you read the network registration status, which will tell you if the UE has connected to the network.

You can use the AT command interface available in NCS to read out this information in your application.

You can read more about all AT commands available in the AT Command Reference Guide.

Best regards,

Heidi