GitLab

1. First please add a test hub in your Azure account:

click to open

you need to create a IoT Hub and a Resource Group

2. Add device

3. Choose device certification method

• To Use CertifiateAuthority

we need to download tools to create the certificates for the device.

Here is How

For the 3rd party mqtt test tool such MQTT FX, you may need to download the Root Certicate at: https://github.com/Azure/azure-iot-sdk-c/blob/master/certs/certs.c, but for the HMI PM4, we don't need it.

• To Use SAS password

we need to install VisualStudio Code Azure Extension to apply the SAS password

4. Tools

1. Azure CLI

here

and need to install Azure IoT extension

here

2. VSCode Azure Extension

here

5. Generate SAS password

To generate the device SAS passowrd, just right click the device in VSCode Azure Cli extension.

You will be asked for enter the hours of the expiration.

6. For testing the publish message

open the powershell for windows, use Azure CLI to enter the command and listen to the events:

7. For testing the subscription of topic

use VSCode Azure Extension to send "Cloud to Device" message, and see what happends on the device