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Open topic with navigation CAPL Functions » VT System » SetOutputMode

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SetOutputMode

Valid for: CANoe DE • CANoe:lite DE Note
The function can only be called on system variable namespaces of appropriate channels of VT System modules.

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Method Syntax

long SysVarNamespace.SetOutputMode (eVTS2848OutputMode Mode);

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Description

Sets the mode for output on the channel.

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Parameters

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Return Values

  • 0: Successful call
  • -1: Call error
  • -2: The namespace on which the command was called does not exist, is not a valid VT System namespace or does not support this command.
  • -3: The specified mode is not valid
  • -4: The function wasn’t called in the context of the main method of a test module. So it is not possible to wait until the setting will be taken over from the VT System. Otherwise the call was successful but it is not sure if the settings have been taken over already when the call returns.

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Example

The following example demonstrates how to use the PWM output of a VT2848 channel to simulate a PWM based sensor (e.g., a RPM sensor). The channel used in this example is called RPM_Sensor.

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CAPL

SimulateSensorPWM ()
{
  // The current value of the frequency (100Hz)
  float currentFrequency = 100.0;

  // Choose ′low side switch′, PWM curve type and
  // Vext as source for high value
  sysvar::VTS::RPM_Sensor.SetOutputMode(eVTS2848OutputModeLowsideSwitch);
  sysvar::VTS::RPM_Sensor.SetCurveType(eVTSCurveTypePWM);
  sysvar::VTS::SensorModule1.SetOutputSource(eVTSOutputSourceGroupChannels1To4, eVTSOutputSourceVExt);

  // Set the number of repeats to unlimited
  sysvar::VTS::RPM_Sensor.SetPWMRepeats(0);

  // Set initial frequency (100Hz) and duty cycle (50%) values
  @sysvar::VTS::RPM_Sensor::PWMOutputFreq = currentFrequency;
  @sysvar::VTS::RPM_Sensor::PWMOutputDC = 50.0;

  // Start the stimulation
  sysvar::VTS::RPM_Sensor.StartStimulation();

  // To stimulate different sensor readings increase
  // frequency of the PWM signal over time
  while(currentFrequency < 200)
  {
    // Increase the frequency by 1Hz every 100ms
    TestWaitForTimeOut(100);
    currentFrequency += 1;
    @sysvar::VTS::RPM_Sensor::PWMOutputFreq = currentFrequency;
  }

  // Stop the stimulation
  sysvar::VTS::RPM_Sensor.StopStimulation();
}

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.NET (C#)

public void SimulateSensorPWM()
{
    // Get VTS interface, module and channel
    IVTSystem vts = VTSystem.Instance;
    IVT2848 sensorModule1 = vts.GetChannel<IVT2848>("Sensor_Module1");
    IVT2848PWMStimChannel rpmSensor = vts.GetChannel<IVT2848PWMStimChannel>("RPM_Sensor");

    // The current value of the frequency (100Hz)
    double currentFrequency = 100.0;

    // Choose the source for high voltage on channels 1-4
    sensorModule1.OutputSource1To4.Value = OutputSource.VExt;

    // Choose a PWM curve
    rpmSensor.CurveType.Value = CurveType.PWM;
    // Set the number of repeats to unlimited
    rpmSensor.PWMRepeats.Value = 0;

    // Set initial frequency (100Hz) and duty cycle (50%) values
    rpmSensor.PWMOutputFreq.Value = currentFrequency;
    rpmSensor.PWMOutputDC.Value = 50.0;

    // Start the stimulation
    rpmSensor.StartStimulation();

    // To stimulate different sensor readings increase
    // frequency of the PWM signal over time
    while (currentFrequency < 200)
    {
        // Increase the frequency by 1Hz every 100ms
        Vector.CANoe.Threading.Execution.Wait(100);
        currentFrequency += 1;
        rpmSensor.PWMOutputFreq.Value = currentFrequency;
    }

    // Stop the stimulation
    rpmSensor.StopStimulation();
}

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VT System Control

  • Select SensorModule1
  • Set Sidebar | Output Sources | Channel 1 to 4 to Vext
  • Select RPM_Sensor
  • Set Sidebar | Output Settings | Output Mode to Low side switch
  • Set Sidebar | Output Settings | Curve Type to PWM
  • Set Sidebar | PWM Output | Repeats to 0
  • Set Sidebar | PWM Output | Frequency to 100.0
  • Set Sidebar | PWM Output | Duty Cycle to 50.0
  • Click Sidebar | Output Settings | Start Stimulation
  • Increase PWM frequency in 20Hz steps
  • Set Sidebar | PWM Output | Frequency to 120.0
  • Set Sidebar | PWM Output | Frequency to 140.0
  • Set Sidebar | PWM Output | Frequency to 160.0
  • Set Sidebar | PWM Output | Frequency to 180.0
  • Set Sidebar | PWM Output | Frequency to 200.0
  • Click Sidebar | Output Settings | Stop Stimulation
vtsSetOutputMode