Cannot connect to Nordic Cloud using custom PCB

RE: Cannot connect to Nordic Cloud using custom PCB

kerimkilic — Thu, 07 Jan 2021 17:03:56 GMT

It is working now, thanks very much for your help Didrik! I can receive the simulated sensor data from the asset tracker on the dashboard.

RE: Cannot connect to Nordic Cloud using custom PCB

Didrik Rokhaug — Thu, 07 Jan 2021 14:54:08 GMT

Yes, you will have to add that line yourself.

E.g.

CONFIG_NRF_CLOUD_CLIENT_ID_PREFIX="abc-"

Remember that if you use that solution, you must get new certificates to the device, with a matching device ID.

With the prefix above, the device ID would be "abc-<IMEI>", where <IMEI> is the IMEI of the device.

RE: Cannot connect to Nordic Cloud using custom PCB

kerimkilic — Thu, 07 Jan 2021 14:41:13 GMT

I'm currently looking at the prj.conf file but it does not seem to have that line you describe there ncs\v1.4.1\nrf\applications\asset_tracker\prj.conf

Should I add that line there myself? or am I looking at the wrong file to begin with?

RE: Cannot connect to Nordic Cloud using custom PCB

Didrik Rokhaug — Thu, 07 Jan 2021 13:31:34 GMT

The easiest way is to set CONFIG_NRF_CLOUD_CLIENT_ID_PREFIX to something else than "nrf-" in the prj.conf file, but you would then have to get new certificates with device ID <prefix><IMEI>.

If not, you must #define NRF_CLOUD_CLIENT_ID as the device ID above line 37 in nrf/subsys/net/lib/nrf_cloud/src/nrf_transport.c

RE: Cannot connect to Nordic Cloud using custom PCB

kerimkilic — Wed, 06 Jan 2021 16:33:45 GMT

How and where can I change the device ID? Do I need to do this in the code of the asset tracker?

Kind regards,

RE: Cannot connect to Nordic Cloud using custom PCB

Didrik Rokhaug — Wed, 06 Jan 2021 16:28:23 GMT

You need to make sure that the device uses the same device ID.

Currently, the device is probably using nrf-<IMEI> as it's device ID, which doesn't match the certificates it uses.

It will therefore not be allowed to connect to the MQTT broker.

RE: Cannot connect to Nordic Cloud using custom PCB

kerimkilic — Wed, 06 Jan 2021 11:59:01 GMT

Hi Didrik,

I have generated a new certificate on the nordic cloud with device ID kerim-nowi-node and I set a pin for it. As far as I understand we cannot use nrf- prefix on the device ID because this is reserved for Nordic DK and Nordic Thingy. After generating the certificate I proceeded to upload it on the module using the LTE-Link Monitor. If that is what you mean by Device ID.

Kind regards,
Kerim

RE: Cannot connect to Nordic Cloud using custom PCB

Didrik Rokhaug — Wed, 06 Jan 2021 11:49:15 GMT

Hi,

What certificates have you provided to the device?

What device ID did you use?

What device ID does the device use?

Best regards,

Didrik