Nothing received when attempting to get WIFI location data using MQTT.

RE: Nothing received when attempting to get WIFI location data using MQTT.

Lincoln Thomas — Tue, 26 Sep 2023 22:50:03 GMT

For the record, the document has been fixed (docs.nrfcloud.com/.../Topics.html

RE: Nothing received when attempting to get WIFI location data using MQTT.

leo_nam — Thu, 14 Sep 2023 19:11:18 GMT

Hello,

Changing the topic to

[quote userid="85072" url="~/f/nordic-q-a/103671/nothing-received-when-attempting-to-get-wifi-location-data-using-mqtt/446132"]prod/${team-id}/m/d/${client-id}/d2c[/quote]

worked for me.

Thank you,
leo_nam

RE: Nothing received when attempting to get WIFI location data using MQTT.

Lincoln Thomas — Thu, 14 Sep 2023 17:49:07 GMT

Hi Leo_nam,

Our apologies, you've encountered an error in our documentation which we will correct as soon as possible. The suffixes in that "D2C" table (https://docs.nrfcloud.com/APIs/MQTT/Topics.html) should not be there. The correct topic you should publish on, instead of .../d2c/wifi is:

prod/${team-id}/m/d/${client-id}/d2c

(no /wifi suffix)

The suffixes in the table above it, where you subscribe, are correct. So you are correctly subscribing to prod/${team-id}/m/d/${client-id}/wifi/r

Let us know if this works for you.

-Lincoln

RE: Nothing received when attempting to get WIFI location data using MQTT.

leo_nam — Thu, 14 Sep 2023 14:14:44 GMT

A JWT generated using the "device" credentials (client-id, private/public key) allow me to use location services via the curl command from terminal (i.e. REST) and receive location data based on the wifi information I send. It just doesn't seem to work over MQTT. I'd prefer to use MQTT, that way I don't have to generate a JWT during runtime on the non-nrf device.

Am I subscribed to the wrong MQTT topic? I am using prod/${team-id}/m/d/${client-id}/wifi/r

I can also see that my information is being sent to nrfCloud using the mosquitto_rr command via the "Server to nrfCloud (c2a)" terminal in the nrfCloud portal.

Although I do have to look it up as historical data, otherwise all I see when I use mosquitto_rr is:

Thank you,
leo_nam

RE: Nothing received when attempting to get WIFI location data using MQTT.

leo_nam — Tue, 12 Sep 2023 13:00:09 GMT

Hello,

I am not using the nrfConnectSDK nor am I using a sample or a nordic device. I am using mosquitto commands on a terminal in Linux which is acting as a client to send wifi information to nrf cloud and receive location info from nrf cloud.

Private Key and CSR were generated using openssl after which client certificates were generated and the "device" was added to my nrfcloud account.

I am doing this to confirm how nrfCloud Wifi Locationing works with MQTT before I start writing code to put on to my device which is not a nordic device.

This is the output from terminal after putting in my mosquitto_rr command:

Client ${client-id} sending CONNECT
Client ${client-id} received CONNACK (0)
Client ${client-id} sending SUBSCRIBE (Mid: 1, Topic: prod/${team-id}/m/d/${client-id}/wifi/r, QoS: 0, Options: 0x00)
Client ${client-id} received SUBACK
Client ${client-id} sending PUBLISH (d0, q0, r0, m2, 'prod/${team-id}/m/d/${client-id}/d2c/wifi', ... (152 bytes))

I was expecting to receive an error message because I was unsure of the formatting for the wifi info being sent.

The link: https://docs.nrfcloud.com/APIs/MQTT/Topics.html#d2c-topics provides three different examples so I chose to use the one with the simplest formatting.

Thank you,

leonam

Edit: added ${} to show that I'm not actually using 'client-id' and 'team-id' in my function calls

RE: Nothing received when attempting to get WIFI location data using MQTT.

Øyvind — Tue, 12 Sep 2023 11:24:18 GMT

Hello,

are you able to provide more information on what you are trying to achieve? What version of nRF Connect SDK are you running, and what sample are you running on your device? What does the log output on the device look like?

Kind regards,
Øyvind