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Version: 3.2.7

Sensors

Defining sensors in a SMIL playlist is designed to be robust, future-proof, and human-readable. Below is an example for already integrated Nexmosphere sensors.

Using Nexmosphere sensors​

Nexmosphere supports a large number of industry-grade sensors and provides a great response time.

Read More About Nexmosphere​

Link to Nexmosphere documentation, website, and other related resources.

You can define multiple sensors attached to the the supported device.


<head>
    <sensors>
        <sensor type="rfid" id="rfid1" driver="nexmosphere">
            <!-- Port on Nexmosphere controller where the antenna is attached to -->
            <option name="address">004</option>
        </sensor>
        <sensor type="rfid" id="rfid2" driver="nexmosphere">
            <!-- Port on Nexmosphere controller where the antenna is attached to -->
            <option name="address">005</option>
        </sensor>
    </sensors>
</head>

Once you define sensors, you can use them for triggering playlists:


<head>
    <triggers>
        <trigger id="trigger1" condition="or">
            <condition origin="rfid1" data="1" action="picked"/>
        </trigger>
        <trigger id="trigger2" condition="or">
            <condition origin="rfid1" data="2" action="picked"/>
        </trigger>
    </triggers>

</head>

The code above will

  • trigger <par begin="trigger1"> or <seq begin="trigger1">
  • whenever the rfid antenna (<condition origin="rfid1" ...)
  • emits an RFID tag with ID 1 (<condition ... data="1")
  • was picked up (<condition ... action="picked").

RFID Antenna​

Sensor definition:


<sensor type="rfid" id="rfid1" driver="nexmosphere">
    <!-- Port on Nexmosphere controller where the antenna is attached to -->
    <option name="address">004</option>
</sensor>

Sensor actions:

  • picked for the action when you pick up the RFID tag from the antenna

  • placed for the action when you put down the RFID tag on the antenna


<trigger id="trigger1" condition="or">
    <condition
            origin="rfid1" <!-- Reference to the <sensor id="rfid1"> -->
    data="5" <!-- Reference to the RFID tag ID you are using -->
    action="picked" <!-- Reference to the user action with the RFID tag -->
    />
</trigger>

Buttons [IN PROGRESS]​

This sensor is under integration; the API might change.

Sensor definition:

This sensor is under integration; the API might change.


<sensor type="button" id="button1" driver="nexmosphere">
    <!-- Port on the Nexmosphere controller where the button is attached -->
</sensor>

Sensor actions:

  • pressed once you press the button and keep pressed
  • released when you release the button

<trigger id="trigger1" condition="or">
    <condition origin="button1" <!-- Reference to the <sensor id="button1"> -->
    data="1" <!-- Reference to the button ID -->
    action="released" <!-- Reference to the user action  -->
    />
</trigger>