Sending data from the cloud to your thing

To test that AWS can publish information to your thing:

1. Create two subscribe topics in the Cinterion® PLS62‑W Wireless Module.

   1. Using a terminal emulator, type:

      at+emqsubopen=0,"SubscribeFromCloud0"<return>

      at+emqsubopen=1,"SubscribeFromCloud1"<return>

      

   2. Check that the first two index numbers are assigned a topic each. Type:

      at+emqsubopen?<return>

      A list of index numbers and their assigned topics appears.

      

2. Use AWS to publish a message to each topic.

   1. Using the AWS IoT MQTT test client, select the Publish to a topic tab.

      

   2. In the Topic name box, type:

      SubscribeFromCloud0/<AWSthingName>

   3. In the coding window, replace

      Hello from AWS IoT console with

      Turn heating on

   4. Select Publish.

      

   5. In the Publish box, type:

      SubscribeFromCloud1/AWSthingName

   6. In the coding window, replace

      Turn heating on with

      Heat for 1 hour

   7. Select Publish.

      View the AWS messages in the terminal emulator, in the following format:

      +EMQ: <indexnumber>,<messagelength>

      {

      "message": "<messagetext>"

      }

      

If you can see the messages in the terminal emulator, then AWS can successfully publish data to your thing through the Cinterion® PLS62‑W Wireless Module.