Defining sensors in SMIL playlist is designed to be robust, future proof and human readable. Below is used an example for already integrated Nexmosphere sensors.
Using Nexmosphere sensors
Nexmosphere supports a large amount of industry-grade sensors and provides a great response time.
Read More About Nexmosphere
Link to Nexmosphere Docs, website and other related resources.
You can define multiple attached sensors connected to 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
rfidantenna (<condition origin="rfid1" ...) - emits that RFID tag with ID 1 (
<condition ... data="1") - was picked up (
<condition ... action="picked").
Available sensors and related actions
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:
pickedfor action when you pick up the RFID tag from the antennaplacedfor 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 will probably change.
Sensor definition:
<sensor type="button" id="button1" driver="nexmosphere">
<!-- Port on Nexmosphere controller where the button is attached to-->
<option name="address">005</option>
</sensor>
Sensor actions:
pressedonce you press the button and keep pressedreleasedonce 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>