nRF5340 DK: A sample for ublox SARA modem

[Yanpengwu]

Hi Support team,

Is there a sample in ncs or zephyr for ublox SARA modem? There is a driver for this device in zephyr, if there is a sample will much helpful to me.

Thank you very much.

Best regards,

Yanpeng Wu

[helsing]

Hi Yanpeng Wu,

What would you need to operate the modem? Which modem is it and which board are you using? I suppose you could get started with the UART Driver Sample in order to send AT commands? After confirming that you are able to communicate with the modem you could modify the sample to suit your application.

Have you checked the Zephyr forum or with uBlox?

There is a shield, zephyr/boards/shields/sparkfun_sara_r4. Even if you are not using that particular shield you might be able to learn something from the shield files. There is also a board: zephyr/boards/arm/particle_boron that is using a uBlox module along with an nRF52840.

I also found a list of Networking Samples, perhaps some of these, like the Cellular Modem Sample could work?

EDIT: Link to UART Driver Sample updated.

[Yanpengwu]

Hi Helsing,

Thank you so much for such a wealth of information and guidance, which are very helpful to me.

In my application, I will not use any short-range protocols. I just use the LTE modem to send some monitoring data periodically and will use AT commands.
My modem is ublox-SARA-R422M8S, I have a DK for this modem, and I connect it to nRF5340-DK. I will use nRF5340 net-core to send data, so I use net-core-UART0 (using p0.10,p0.11,p1.00,p1.01 on nRF5340-DK) to connect the modem.

Could I confirm several points with you as below:
1. The first link of "UART Driver Sample" is invalid, could you help update it?
2. I have not checked Zephyr forum or with uBlox, if you can help find some related links and share with me, it's much appreciated.
But I found there is the driver code in Zephyr for this modem: driver.

I will study the shield files, the board sample, and the Cellular Modem Sample. Thank you again.

Best regards,
Yanpeng Wu

[helsing]

Hi,

Yanpengwu said:

1. The first link of "UART Driver Sample" is invalid, could you help update it?

Thank you for the notification, I have now updated the link.

Yanpengwu said:

2. I have not checked Zephyr forum or with uBlox, if you can help find some related links and share with me, it's much appreciated.

Try Zephyr.com->Community->Connect with Zephyr->Discord.

I found a channel named 'sara-r4'.

Over at uBlox I suppose you could try the support community.