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Running Phidget Handler in Simulated Mode

Code Block

language	xml
title	Phidget Handler Thing Facet in Simulated mode
linenumbers	true

<ThingFacet Name="PhidgetSimulatedFacet">
  <Integer Name="SimulatedValue" Update="auto" KnownBy="PhidgetSimAction"/>
  <String Name="DeviceType"/>
  <String Name="SerialNumber"/>
  <Action Name="PhidgetSimAction" Documentation="Returns integer values from 1 - 100 in Random order">
    <Workflow Limit="1" Live="1" Timeout="-1">
      <Task Name="Main" While="True">
        <Event Name="Argument" As="ActionArgument"/>
        <Invoke Name="ReadValue" waitFor="Argument" Get="phid://" SerialNumber="[%:Event.Argument.SerialNumber.Value:%]" DeviceType="[%:Event.Argument.DeviceType.Value:%]" Simulated="true"/>
        <Output Name="Result" As="ActionResult">
          <Value>
            <SimulatedValue>[%:[%:@Output:%]Invoke.ReadValue.Message.Value:%]</SimulatedValue>
          </Value>
        </Output>
      </Task>
    </Workflow>
  </Action>
</ThingFacet>

Reading Data from Sensors Connected to Phidget Interface Kit

There are few important points to be noted here:

Note that PhidgetInterfaceKit is usually a multi port device (2/2/2 or 8/8/8) i.e it has 8 USB, and 8 GPI and 8 8 GPO pins.
When there are multiple sensors attached to the InterfaceKit, there will be multiple instances created in ThingModel to which PhidgetSensorFacet is attached.
Even though there is one single USB connection, the Protocol handler supports multiplexing of data to different Channel.
Therefore when we do a Invoke with Get="phid://[%:Event.Argument.SerialNumber.Value:%]" we attach the serial number to make the invocation unique.
Internally there will be multiple listeners attached to the USB serial port each receiving data and saving to SensorValue.

Simulated mode

Code Block

language	xml
title	Phidget Handler Thing Facet to Read Sensors
linenumbers	true

<ThingFacet Name="PhidgetSensorFacet">
  <Integer Name="SensorValue" Update="auto" KnownBy="PhidgetSensorAction"/>
  <String Name="DeviceType"/>
  <String Name="SerialNumber"/>
  <String Name="SensorName"/>
  <Action Name="PhidgetSensorAction" Documentation="Returns integer values from 1 - 100 in

 Random order">
    <Workflow Limit="1" Live="1" Timeout="-1">
      <Task Name="Main" While="True">
        <Event Name="Argument" As="ActionArgument"/>
        <Invoke Name="ReadValue" waitFor="Argument" Get="phid://[%:Event.Argument.SerialNumber.Value:%]" SerialNumber="[%:Event.Argument.SerialNumber.Value:%]" DeviceType="[%:Event.Argument.DeviceType.Value:%]" Simulated="false"/>
        <Output Name="Result" As="ActionResult">
          <Value>
            <SensorValue>[%:[%:@Output:%]Invoke.ReadValue.Message.Value:%]</SensorValue>
          </Value>
        </Output>
      </Task>
    </Workflow>
  </Action>
</ThingFacet>
<!-- Combine with Model -->
<ThingModel Name="PhidgetSensors" Combines="PhidgetSensorFacet">
   <Sid Name="SensorID"/>
</ThingModel>
<!-- Activate Sensor -->
<Query>
  <Save format="version,current">
    <PhidgetSensors>
      <SensorName>Rotation</SensorName>
      <DeviceType>PhidgetInterfaceKit</DeviceType>
      <SerialNumber>0</SerialNumber>
      <SensorValue value="$Null()"/>
    </PhidgetSensors>
  </Save>
</Query>

Reading Data from a GPS Sensor

Code Block

language	xml
title	Phidget Handler Thing Facet to Read GPS Sensor
linenumbers	true

<ThingFacet Name="PhidgetSimulatedFacet">
  <Integer Name="SimulatedValue" Update="auto" KnownBy="PhidgetSimAction"/>
  <String Name="DeviceType"/>
  <String Name="SerialNumber"/>
  <Action Name="PhidgetSimAction" Documentation="Returns integer values from 1 - 100 in Random order">
    <Workflow Limit="1" Live="1" Timeout="-1">
      <Task Name="Main" While="True">
        <Event Name="Argument" As="ActionArgument"/>
        <Invoke Name="ReadValue" waitFor="Argument" Get="phid://" SerialNumber="[%:Event.Argument.SerialNumber.Value:%]" DeviceType="[%:Event.Argument.DeviceType.Value:%]" Simulated="true"/>
        <Output Name="Result" As="ActionResult">
          <Value>
            <SimulatedValue>[%:[%:@Output:%]Invoke.ReadValue.Message.Value:%]</SimulatedValue>
          </Value>
        </Output>
      </Task>
    </Workflow>
  </Action>
</ThingFacet>

Controlling Servo Motor Angle

Code Block

language	xml
title	Phidget Handler Thing Facet to control Servo Motor
linenumbers	true

<ThingFacet Name="PhidgetSimulatedFacet">
  <Integer Name="SimulatedValue" Update="auto" KnownBy="PhidgetSimAction"/>
  <String Name="DeviceType"/>
  <String Name="SerialNumber"/>
  <Action Name="PhidgetSimAction" Documentation="Returns integer values from 1 - 100 in Random order">
    <Workflow Limit="1" Live="1" Timeout="-1">
      <Task Name="Main" While="True">
        <Event Name="Argument" As="ActionArgument"/>
        <Invoke Name="ReadValue" waitFor="Argument" Get="phid://" SerialNumber="[%:Event.Argument.SerialNumber.Value:%]" DeviceType="[%:Event.Argument.DeviceType.Value:%]" Simulated="true"/>
        <Output Name="Result" As="ActionResult">
          <Value>
            <SimulatedValue>[%:[%:@Output:%]Invoke.ReadValue.Message.Value:%]</SimulatedValue>
          </Value>
        </Output>
      </Task>
    </Workflow>
  </Action>
</ThingFacet>

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