A IoT Hub Desired Twin State event will listen for changes in the desired properties by Azure.
Defining a IoT Hub Desired Twin State
To define a IoT Hub Desired Twin State event trigger, follow these steps:
- From the Workbench left pane, expand the node where
you want to define the IoT Hub Desired Twin State event trigger.
- Click Projects.
The Projects tab appears with all the projects in the node. - Right-click on a
specific project and
then click New > Use Canvas Editor.
Alternatively, click New button at the bottom of the Projects window when a specific project tab has already been selected. - The new Trigger window
appears.
Name the trigger. The trigger name can be up to 64 characters and include letters, numbers, and the underscore character. Spaces are allowed. - From the Event tab, select the
Trigger Event Type down-arrow, expand
the Azurecategory, and then select
IoT Hub Desired Twin State.
IoT Hub Desired Twin State event type trigger event variables
The input event variables available to a IoT Hub Desired Twin State event trigger are:
| Parameter | Description |
|---|---|
| Property Identifier | The Twin property identifier that should be updated. |
| Property Value | The Twin property value. The type will change depending on the Twin Property. |
The Event tab becomes active with parameters that accommodate the IoT Hub Desired Twin State event.
| Parameter | Description |
|---|---|
| Twin Property Filter | When filled in this event will only fire on requests to update the specified Twin Property Filter. |
| Twin Property Type | The expected type of the device property. |
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