Connect to NRF cloud using the Serial LTE Modem sample

RE: Connect to NRF cloud using the Serial LTE Modem sample

kurama9942 — Sat, 13 Jan 2024 16:59:49 GMT

Hi, thank you very much for your help. I followed the instructions you gave me and it worked. I also got to know where I went wrong.

Regards

RE: Connect to NRF cloud using the Serial LTE Modem sample

justin — Wed, 10 Jan 2024 20:48:49 GMT

- the credentials on your device do not match what has been provisioned to nRF Cloud.

This is difficult to fully verify, other than having the device successfully connect to nRF Cloud.
If the device_credentials_installer.py is executed multiple times on the same device it could occur if the script prompts or options are not used correctly.
If you suspect this is the issue, I would delete your device from nRF Cloud, and re-run the steps.
For device_credentials_installer.py:
- use the -d parameter to ensure the sec tag contents are deleted.
- use the --verify parameter to perform a SHA check on the cert data.
- if you are using the same csv file, ensure you select y to overwrite when prompted.

- the credentials on your device were installed to a sec_tag other than 16842753.

This would occur only if you used the -s or --sectag when running the device_credentials_installer.py script.

RE: Connect to NRF cloud using the Serial LTE Modem sample

kurama9942 — Wed, 10 Jan 2024 20:28:23 GMT

I remember the first time I was connecting to LTE, it took me 30 minutes. Will it be the same for connecting to NRF Cloud?

Also, how can I check the last 2 causes?

RE: Connect to NRF cloud using the Serial LTE Modem sample

justin — Wed, 10 Jan 2024 20:26:55 GMT

It should connect within 30s... but is dependent on LTE network conditions.
unfortunately debug output is not enabled in the prebuilt hex file for serial LTE modem.
you can view standard logging output on RTT if you have a JLink device.

your device appears to be correctly added to the cloud.
the potential causes for not connecting are:
- your SIM card is out of data.
- poor LTE connection.
- the credentials on your device do not match what has been provisioned to nRF Cloud.
- the credentials on your device were installed to a sec_tag other than 16842753.

RE: Connect to NRF cloud using the Serial LTE Modem sample

kurama9942 — Wed, 10 Jan 2024 19:54:04 GMT

I did the necessary changes. On my NRF Cloud now, I am getting with my internal UUID:-

But I am still getting the same error when I use the terminal:-

Wanted to know how much time it normally takes to connect to NRF Cloud after I write this command AT#XNRFCLOUD=1 for the first time

RE: Connect to NRF cloud using the Serial LTE Modem sample

justin — Wed, 10 Jan 2024 19:36:45 GMT

and if you need to use your own UUID, you will need to build the serial LTE modem project with your ID in the configuration:

CONFIG_NRF_CLOUD_CLIENT_ID_SRC_COMPILE_TIME=y
CONFIG_NRF_CLOUD_CLIENT_ID="dc8e7aff-5331-409e-be02-5529dffa5537"

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/libraries/networking/nrf_cloud.html#configuration-options-for-device-id

RE: Connect to NRF cloud using the Serial LTE Modem sample

justin — Wed, 10 Jan 2024 19:32:36 GMT

to use the prebuilt serial LTE modem hex file to connect to nRF Cloud you will need to use the device's internal UUID (5053544b-3234-42e5-8055-0a1a818c78e2) as your nRF Cloud device ID.

if you follow the steps i provided, it will onboard the device using that UUID as the device ID.

it should be sufficient to delete your device from nRF Cloud and then modify the provision.csv, replacing dc8e7aff-5331-409e-be02-5529dffa5537 with 5053544b-3234-42e5-8055-0a1a818c78e2.
then re-provision/onboard your device.

RE: Connect to NRF cloud using the Serial LTE Modem sample

kurama9942 — Wed, 10 Jan 2024 19:22:27 GMT

If you are talking about my UUID then no. But that's odd as I can see my device with my UUID number as shown below:-

RE: Connect to NRF cloud using the Serial LTE Modem sample

justin — Wed, 10 Jan 2024 19:12:43 GMT

is your device ID 5053544b-3234-42e5-8055-0a1a818c78e2?
That device does not exist in nRF Cloud.

RE: Connect to NRF cloud using the Serial LTE Modem sample

kurama9942 — Wed, 10 Jan 2024 19:06:34 GMT

Hi,

Thank you for replying. I have done these steps and have already gotten my device added to NRF Cloud. I also did step 4. But I couldn't get line 13. I am not sure where I am going wrong.

Regards

RE: Connect to NRF cloud using the Serial LTE Modem sample

justin — Wed, 10 Jan 2024 18:59:10 GMT

yes you can connect to nRF Cloud using the pre-compiled Serial LTE Modem hex file.

it looks like you have found the device device credentials and provisioning documentation (note: we are in the process of changing this term to device onboarding), but i will list all the steps here:

Create and install credentials on your device.
1. Create a self-signed CA cert and private key: see create_ca_cert.py
2. Create/install a device private key and certificate: see device_credentials_installer.py
  This step uses the CA cert and private key pem files created in step 1a.
  By default, a provision.csv file is created when the script executes successfully.
  If your device is already running serial LTE modem, add --term CRLF to the python command.
  Example:
  python3 ./device_credentials_installer.py --ca <CA_CERT.PEM> --ca_key <CA_PRIVATE_KEY.PEM> -d --term CRLF
Use the provision.csv file created in step 1b to provision (onboard) your device to nRF Cloud.
1. Use the web UI: https://nrfcloud.com/#/add-device/bulk
2. Or use the REST API: https://api.nrfcloud.com/v1#tag/IP-Devices/operation/ProvisionDevices
When your device has been successfully added to your nRF Cloud account, it should appear in your device list: https://nrfcloud.com/#/devices

Now connect the device with serial LTE modem:

> AT+CFUN=1

OK
> AT+CEREG?

+CEREG: 0,5,"900A","0509260F",7

OK
> AT#XNRFCLOUD=1

OK

#XNRFCLOUD: 1,0
> AT#XNRFCLOUD?

#XNRFCLOUD: 1,0,16842753,"50503642-3239-4f86-80c4-06122e299623"

OK

RE: Connect to NRF cloud using the Serial LTE Modem sample

kurama9942 — Wed, 10 Jan 2024 15:01:00 GMT

It is .hex file 2.5.0. Also, how should I contact the developers?

RE: Connect to NRF cloud using the Serial LTE Modem sample

Øyvind — Wed, 10 Jan 2024 08:43:13 GMT

Hello,

No, the response from XNRFCLOUD? (read) shows that it is not connected (0). Are you still using the precompiled .hex file for 2.4.0 or 2.5.0? Will need to ask our developers on this.

Kind regards,
Øyvind

RE: Connect to NRF cloud using the Serial LTE Modem sample

kurama9942 — Tue, 09 Jan 2024 16:28:20 GMT

Hi,

wanted to know how to check if device has access to nRF Cloud through the LTE network because this is what I am currently getting:-

RE: Connect to NRF cloud using the Serial LTE Modem sample

Øyvind — Tue, 09 Jan 2024 08:47:26 GMT

The SIM does not matter in regards to what device it is connected to. As long as your SIM has data and is able to connect to a network.

You can check the connection using AT commands in the Serial LTE Monitor:

With regards to nRF Cloud, please make sure about the following:

RE: Connect to NRF cloud using the Serial LTE Modem sample

kurama9942 — Mon, 08 Jan 2024 16:54:24 GMT

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

RE: Connect to NRF cloud using the Serial LTE Modem sample

Øyvind — Mon, 08 Jan 2024 08:11:12 GMT

[quote user="kurama9942"] Is there a way to do that after the board shows on NRF Cloud[/quote]

I'm not sure if I understand your question.

[quote user="kurama9942"]I remember when I did it with asset tracker v2, it showed that lte was connected.[/quote]

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.

RE: Connect to NRF cloud using the Serial LTE Modem sample

kurama9942 — Fri, 05 Jan 2024 14:30:51 GMT

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

RE: Connect to NRF cloud using the Serial LTE Modem sample

Øyvind — Fri, 05 Jan 2024 12:39:20 GMT

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

RE: Connect to NRF cloud using the Serial LTE Modem sample

kurama9942 — Thu, 04 Jan 2024 16:07:00 GMT

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:-

devzone.nordicsemi.com/.../trace_2D00_2024_2D00_01_2D00_04T15_2D00_36_2D00_14.021Z.mtrace

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

RE: Connect to NRF cloud using the Serial LTE Modem sample

Øyvind — Thu, 04 Jan 2024 08:57:46 GMT

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?

RE: Connect to NRF cloud using the Serial LTE Modem sample

kurama9942 — Wed, 03 Jan 2024 16:01:17 GMT

Hi,

this is the trace file that I get:-

devzone.nordicsemi.com/.../trace_2D00_2024_2D00_01_2D00_03T15_2D00_58_2D00_43.607Z.mtrace

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

Regards

RE: Connect to NRF cloud using the Serial LTE Modem sample

Øyvind — Tue, 02 Jan 2024 19:54:21 GMT

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.

RE: Connect to NRF cloud using the Serial LTE Modem sample

kurama9942 — Tue, 02 Jan 2024 15:57:42 GMT

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

RE: Connect to NRF cloud using the Serial LTE Modem sample

Øyvind — Tue, 02 Jan 2024 09:28:53 GMT

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

Thanks.

Kind regards,
Øyvind