config in runtime instead of in prj.conf

[Yanpengwu]

Hi Support team:

I'm using Zephyr cellular modem driver on the nRF5340 and set APN in prj.conf with 'CONFIG_MODEM_CELLULAR_APN="telenor.iot"' now.
I need to set APN value in runtime at the initialization stage, because this value is provided by the user.

I found the driver did not provide API to do this. Is there any method to do this in Zephyr or Nordic sdk? Thank you very much.

Best regards,
Yanpeng Wum

[Håkon Alseth]

Hi,

 

I'm using Zephyr cellular modem driver on the nRF5340 and set APN in prj.conf with 'CONFIG_MODEM_CELLULAR_APN="telenor.iot"' now.
I need to set APN value in runtime at the initialization stage, because this value is provided by the user.

I found the driver did not provide API to do this. Is there any method to do this in Zephyr or Nordic sdk? Thank you very much.

Given that this is the zephyr modem subsys, and not the nrf9160 that you're looking into, the best option is to ask the zephyr community, as these are modules that isn't directly supported by nRF devices.

That being said; It does not look like the zephyr modem subsys has the option for this.

However; you can issue the following AT commands manually: https://github.com/zephyrproject-rtos/zephyr//blob/v3.6.0/drivers/modem/modem_cellular.c#L1818-L1823

 

Kind regards,

Håkon

[Yanpengwu]

Hi Håkon, Thanks for the quick reply. Before touching the driver code, is it possible to do this in Zephyr? For example through set environment variables or other similar ... 
I can understand the prf.conf will be processed in the compiling stage, not sure if there is any chance to do it in the application domain.

[Håkon Alseth]

Hi,

 

We do not use the modem subsys with the nRF91-series in zephyr, so I cannot answer this, as I do not know. However; if you have a way to send an arbitrary AT command to your modem, you should send a similar sequence which I pointed to in my former reply.

 

Kind regards,

Håkon

[Yanpengwu]

Hi Håkon,

I'm using nRF5340, not the nRF91. Is it the same for nRF5340? If so, I will study the AT command sequence to see how to do it in runtime.

Best regards,

Yanpeng Wu