CC3200: Help required to connect to IBM Bluemix

Hello Techinspired,

I would suggest starting with the mqtt_client example which is smaller test example.

Configure your test application to connect to the iot.eclipse.org remote MQTT broker on port 1883.

Then use a command line client, like mosquitto (for example), to directly connect to the same remote broker on the same port (1883) to view the messages sent. Using the web-clients requires websocket support which may or may not be available with your client/broker/network configuration.

For example, you can subscribe to the messages coming from the mqtt_client application via the broker as follows :-

$ mosquitto_sub -h iot.eclipse.org -p 1883 -t /cc3200/#

[ Note, though that this is public broker, so you can expect that there may be other boards that are already sending data to the /cc3200 topic space, so you may want to configure a more unique topic for your testing. ]

[ Note2, you should also specify a new 'clientId' in the cc3200 application to ensure your connection to the broker is unique. [default is "user1" in sdk 1.30].

Hope that helps,
~roger

Hello Asish,

Regarding your original question about connecting to IBM Watson MQTT broker. Did you get that working?

If not, there are couple of things you should configure that might help here :-

For IBM QuickStart Broker (1 way, test broker, transmit only), here are a few steps that might help :-

1. Configure the server (broker) to be : "quickstart.messaging.internetofthings.ibmcloud.com"
2. Configure the clientId to be : "d:quickstart:iotsample-ti-cc3200:<id>", where id is a unique identifier for your board
3. Publish data on the following topic space : "iot-2/evt/status/fmt/json", preferably with format, something like "{\"d\":{\"temp\":%d }}" [sending temperature data as an example]
4. Set WILL_TOPIC to NULL
5. Remove code that subscribes (since quickstart is 1-way comms)
6. View data using IBMs quickstart viewer (quickstart.internetofthings.ibmcloud.com/, where <id> is as above.

For IBM Registered Broker service (2 way, full IBM service) :-

1. Register your device with IBM Watson (developer.ibm.com/.../). This will give you a device <organisation>, <type> and <key> to use with your device <id>. You will need to define, or create a device <type> to use here as well if this is the first such device being registered in your account.
2. Configure the server (broker) to be : "<myorganisation>.messaging.internetofthings.ibmcloud.com", where myorganisation was obtained in step1.
3. Configure the clientId to be : "d:<myorganisation>:<type>:<id>", as obtained/configured while registering.

4. Configure the username to be "use-token-auth", and configure the password to be "<key>" as obtained above.

5. Publish data on the following topic space : "iot-2/evt/status/fmt/json", preferably with format, something like "{\"d\":{\"temp\":%d }}" [sending temperature data as an example]
6. Subscribe on the following topic space : "iot-2/cmd/+fmt/json"
7. Ensure WILL TOPIC is NULL or configured to match allowed topic space "iot-2/evt/status/fmt/json" (as basic example).
8. View data using IBMs device dashboard (as used above when registering the device), or custom IBM Watson based application.

Hope that helps,
~roger