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System Requirements

The requirements for a successful configuration of MQTT and Azure are listed below.:

• MQTT Driver version 0.2.1
• Microsoft Azure IoT Hub Account
• Visual Studio Code with an Azure IoT Hub

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Configuration Settings

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Visual Studio Code

Visual Studio Code is an open-source, streamlined code editor with support for development operations like debugging, task running, and version control. Visual Studio Code can be downloaded here.

To download the extension that allows interactions with to Visual Studio, Azure IoT Hub, and IoT Device Management, click here.

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After installing the extension, open the VSCode application. In the explorer pane of the VS Code, click the ”Azure IoT Hub” tab in the bottom left corner (1 below), and click ”Select IoT Hub” (2) in the context menu.

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New IoT Devices can be created through this the Azure IoT Hub extension. Select the context menu (1 below), click on Create Device (2), and enter a Device ID for the new IoT device. 

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Review the Connection String that was created for the device and record the following pieces of information from this string:

HostName = TatsoftTestHub.azure-devices.net DeviceId = NewDevice

Again, right-Right click on the device and , select ”Generate Generate SAS token Token for device” Iot Hub, and enter the expiration time. You should see some the information displayed at in the Output Windowoutput window. 

Record the following pieces of information from this string:

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To verify that data is flowing from the MQTT Driver to the cloud-based Azure IoT Hub, right - click on the device entry and select ”Start Monitoring Built-In Event Endpoint”. 

MQTT Driver

On In your Project’s project’s Engineering Environmentenvironment, navigate to Devices > Channels and add a new MQTT channel by selecting it from the Installed Protocols menu.

On In Devices > Nodes, add a node for the newly created MQTT Channel. The Primary Station primary station's configuration is done made as follows:

URL = <Host Name> Port = <Port Number>
Client ID = <Device Id>
Username = <Host Name>/<Device Id> Password = <SAS Token>
TLS Version = <TLSv1.0>
X059 Certificate = <Certificate thumbprint>  (optional)  QoS = <Quality of Service>
Keep Alive = <Message sent to Broker to prevent the link from being broken> (in seconds)

For our the IoT Hub and Device the device configured in VSCode, the parameters are as follows.

URL = TatsoftTestHub.azure-devices.net Port = 8883
Client ID = NewDevice
Username = TatsoftTestHub.azure-devices.net/NewDevice
Password = SharedAccessSignature sr=TatsoftTestHub.azure-devices.net&sig=pzzXCZK%2 BQ6dJUe2Hf1SptTR1oPMbfyip0K9M4TQPZc4%3D&skn=iothubowner&se=1593008673

TLS Version = <TLSv1.0> X059 Certificate =
QoS = AtMostOnce Keep Alive = 1

LastlyFinally, on in Devices > Points, fill in the Address address information is filled according to the syntax below:

devices/<Device Id>/messages/events/

For our this example device, the correct topic is:

devices/NewDevice/messages/events/

Once the Device device configuration is complete, go to Run > Startup and execute the project. Open Enable the Trace Window (with Debug and Devices options enabled) and by clicking on settings and selecting the corresponding boxes. Open the TraceWindow and monitor the communication exchange.

Back on VSCode, you can should see the received messages on in the Output Windowoutput window.