Use SIM cards from T-Mobile Netherland for IoT Creators

RE: Use SIM cards from T-Mobile Netherland for IoT Creators

Martin Lesund — Tue, 08 Sep 2020 11:56:02 GMT

Hi Roland,

There is some information in the user guide "Working with nRF9160", however for the full overview on how to work with NCS I recommend that you work through the Tutorials:

There is actually a simple UDP sample now available in NCS master that you can use as reference for the application you are describing.

Building and flashing applications are covered in the tutorials mentioned.

Best regards;
Martin L.

RE: Use SIM cards from T-Mobile Netherland for IoT Creators

Roland Baldin — Mon, 07 Sep 2020 19:02:36 GMT

Many thanks for your answer!!

Where I can find a Quick Start Guid in which it is described how I can change the configuration of the module as you descried.

Further more I am looking for a Quick Start Guide how I can develop and flash an application which reads temperature from temperature sensor and which uses the modem send out the data to the our UDP server.

I couldn't find such documentations 😞

Many thanks for your help!

Regards, Roland

RE: Use SIM cards from T-Mobile Netherland for IoT Creators

Martin Lesund — Tue, 01 Sep 2020 12:25:37 GMT

Hi Roland,

This can be addressed by setting some configurations which are defined in the Kconfig of the LTE Link Controller library, in your projects prj.conf file.

1. You can set the following Configurations in your prj.conf file:

First you need to enable the LTE link Controller library:

CONFIG_LTE_LINK_CONTROL=y
CONFIG_LTE_AUTO_INIT_AND_CONNECT=n

Then you can set the APN by:

CONFIG_LTE_PDP_CMD=y
CONFIG_LTE_PDP_CONTEXT="0,\"IPv4v6\",\"internet.apn\""

In your main file these Configurations will be addressed in the library when you call the lte_lc_init_and_connect() function in your modem_configure() function.

2). This is automatically detected from IMSI, so you do not need to set this manually. (can be overridden by the AT command: %XOPCONF)

3).

First you need to tell the modem to start up in NB-IoT mode:

CONFIG_LTE_NETWORK_MODE_NBIOT=y

You do not need to specify the band, since the modem will search through the bands and find the available one automatic.
However, you can set the modem to only search on some specific bands by enabling Bandlock.

CONFIG_LTE_LOCK_BANDS=y
CONFIG_LTE_LOCK_BAND_MASK="10000001000000001100"

4). This is something you address in your main file.
e.g. you can do something similar as shown in this simple udp sample: https://github.com/martiles/sdk-nrf/blob/udp_psm_sample/samples/nrf9160/udp_psm/src/main.c#L13

Best regards,

Martin L.