Connect to NRF cloud using the Serial LTE Modem sample

[kurama9942]

Hi,

The NCS version I am using is 2.4.0

I have a 91DK which has a modem firmware of 1.3.5. I also have flashed the serial_lte_modem hex file. I saw that we can connect to NRF cloud using the asset tracker V2 hex file. Wanted to know if it is possible to do the same with serial lte modem hex file.

Thank you for your help.

Regards 

[Øyvind]

Hello, 

Wanted to know if it is possible to do the same with serial lte modem hex file

Yes, this should be possible. If the version in the precompiled package does not support nRF Cloud connectivity, you might need to build Serial LTE Modem with nRF Cloud support. More information can be found under nRF Cloud AT commands in the SLM documentation.

Let me know how that works for you. 

Kind regards,

Øyvind

[kurama9942]

Hi,

Thanks for the early reply. I went on the page and it said that we have to add a Kconfig Option for it to work. When I add it I get this error:-

It says that unknown symbol CONFIG_SLM_NRF_CLOUD

Regards

[Øyvind]

If LTE is disconnected, then you wont be able to send any data. Can you provide logs of the issue?

Thanks. 

Kind regards,
Øyvind

[kurama9942]

Do you mean logs from LTE Link Monitor? Do I need to write AT+CFUN=1 and NRF CLOUD command

[Øyvind]

From the Cellular Monitor, which is the new tool to use as LTE Link Monitor is outdated. You can use the Serial Terminal for application logs. Also, it would be great if you can provide modem logs as well.

[kurama9942]

Hi,

this is the trace file that I get:-

trace-2024-01-03T15-58-43.607Z.mtrace

Also, I am getting this error in the terminal, wanted to know if it is okay to get this error:-

Regards

[Øyvind]

The modem trace seems to be a little short. Can you please retry the modem trace, make sure to enable reset device on start and refresh dashboard on start.

Thanks. 

Mobile termination error notification +CMEE <err> values are specified in 3GPP TS 27.007 Ch. 9.2 - in this case 0 equals phone failure. From the modem trace you provided, I see you are using iBasis. Have you registered and activated the iBasis SIM on nRF Cloud? Do you have data on the SIM?

[kurama9942]

Hi,

I believe this should be the entire modem trace file. I kept it going for 30 minutes and the file size stayed the same and some time:-

trace-2024-01-04T15-36-14.021Z.mtrace

The ibasis is registered on the NRF Cloud and has 10 Mb left

[Øyvind]

Can't see anything out of the ordinary from the modem trace. Do you get the same behavior from running the Asset Tracker v2?

[kurama9942]

I remember when I did it with asset tracker v2, it showed that lte was connected. Is there a way to do that after the board shows on NRF Cloud

[Øyvind]

kurama9942 said:

Is there a way to do that after the board shows on NRF Cloud

I'm not sure if I understand your question. 

kurama9942 said:

I remember when I did it with asset tracker v2, it showed that lte was connected.

If you reprogram your device with Asset Tracker v2, does it give the same issues? Also, before programming this application, can you please connect to your DK with the J-Link RTT viewer. This should give more information from the SLM application itself.

[kurama9942]

I believe the problem could be that it shows that my sim card is not connected to any device. Is there a way to connect my sim card to the device