CAPLfunctionVTSvtsSetStimulationMode

Open topic with navigation

CAPL Functions » VT System » vtsSetStimulationMode

vtsSetStimulationMode

Valid for: CANoe DE • CANoe:lite DE

Function Syntax

long vtsSetStimulationMode (char Target[], eVTSStimulationMode Mode);

Description

Sets the mode for internal voltage or resistance stimulation.

Parameters

• Target: Name of the system variable/namespace that will be affected by this function call.
• Mode: Values see eVTSStimulationMode

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.

Example

The following example demonstrates how to use the PWM output of a VT2004 channel to simulate a PWM based sensor (e.g. a RPM sensor). The channel used in this example is called RPM_Sensor.

CAPL

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

  // Choose voltage stimulation and a PWM curve type
  vtsSetStimulationMode("VTS::RPM_Sensor", eVTSStimulationModeVoltage);
  vtsSetCurveType("VTS::RPM_Sensor", eVTSCurveTypePWM);

  // PWM signal will toggle between 0V and 5V
  vtsSetPWMVoltageLow("VTS::RPM_Sensor", 0.0);
  vtsSetPWMVoltageHigh("VTS::RPM_Sensor", 5.0);

  // Set the number of repeats to unlimited
  vtsSetPWMRepeats("VTS::RPM_Sensor", 0);

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

  // Start the stimulation
  vtsStartStimulation("VTS::RPM_Sensor");

  // 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::PWMFreq = currentFrequency;
  }

  // Stop the stimulation
  vtsStopStimulation("VTS::RPM_Sensor");
}

.NET (C#)

public void SetRefVoltageMode()
{
  // Get VTS interface, VT7001 module, internal supply and a output channel
  IVTSystem vts = VTSystem.Instance;
  IVT7001 powerSupply = vts.GetModule("PowerSupply") as IVT7001;
  IVT7001SupplyExternal extSupply = vts.GetChannel("ExtSupply") as IVT7001SupplyExternal;
  IVT7001Channel clamp30 = vts.GetChannel("Clamp30") as IVT7001Channel;

  // Set mode to one power supply only -> external power supply 1
  powerSupply.InterconnectionMode.Value = InterconnectionMode.Sup1;

  // Activate the reference voltage mode with constant value mode
  // and a factor of 0.1
  extSupply.SetRefVoltageMode(RefVoltageMode.Constant, 0.1);

  // The following line sets the output voltage to 15 V,
  // VControl (1.5 V) is calculated with the given factor automatically
  extSupply.RefVoltage.Value = 15.0;

  // Switch output on
  clamp30.Active.Value = OutputMode.Active;
}

VT System Control

• Select RPM_Sensor
• Set Sidebar | General | Stim Mode to Voltage
• Set Sidebar | General | Curve Type to PWM
• Set Sidebar | PWM Output | Voltage High to 5.0
• Set Sidebar | PWM Output | Voltage Low to 0.0
• Set Sidebar | PWM Output | Parameters | Repeats to 0
• Set Sidebar | PWM Output | Frequency to 100.0
• Set Sidebar | PWM Output | Duty Cycle to 50.0
• Click Sidebar | General | Start Stimulation
• Increase frequency
• Set Sidebar | PWM Output | Frequency to 200.0

SetStimulationMode