CAPLfunctionVTSSetPWMStartDelay

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SetPWMStartDelay

CAPL Functions » VT System » SetPWMStartDelay

Tool Availability

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.

Method Syntax

Long SysVarNamespace.SetPWMStartDelay (double StartDelay);

Description

Sets the delay of the start for the output of PWM signals and curves. This function is supported by the modules VT2004 and VT2848.

Parameters

• StartDelay: Time for that the start of PWM or curve output is delayed. This function can be used e.g. to put out several signals with a defined phase shift. The StartDelay is denoted in seconds. Allowed values are from 0.0…4.0 (4s). This parameter is transferred to the VT System with nanosecond resolution.

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 StartDelay is not valid
• -6: The function is not supported by the used variant of the module.

Example

In the following example the PWM output of two VT2004 channels is simulating two sensors with PWM output. The SetPWMStartDelay command ensures that the PWM output on channel Sensor2 is starting 2ms later to produce the corresponding phase shift.

CAPL

// Set up PWM stimulation for sensor 1

// Set voltage stimulation mode
sysvar::VTS::Sensor1.SetStimulationMode(1);
// Set curve type PWM
sysvar::VTS::Sensor1.SetCurveType(1);
// Set the low voltage of the PWM signal to 10V
sysvar::VTS::Sensor1.SetPWMVoltageLow(10);
// Set the high voltage of the PWM signal to 14V
sysvar::VTS::Sensor1.SetPWMVoltageHigh(14);
// Set duty cycle to 40%
@sysvar::VTS::Sensor1::PWMDC = 40;
// Set frequency to 100Hz
@sysvar::VTS::Sensor1::PWMFreq = 100;

// Set up PWM stimulation for sensor 2

// Set voltage stimulation mode
sysvar::VTS::Sensor2.SetStimulationMode(1);
// Set curve type PWM
sysvar::VTS::Sensor2.SetCurveType(1);
// Set the low voltage of the PWM signal to 10V
sysvar::VTS::Sensor2.SetPWMVoltageLow(10);
// Set the high voltage of the PWM signal to 14V
sysvar::VTS::Sensor2.SetPWMVoltageHigh(14);
// Set duty cycle to 40%
@sysvar::VTS::Sensor2::PWMDC = 40;
// Set frequency to 100Hz
@sysvar::VTS::Sensor2::PWMFreq = 100;

// set a start delay of 2ms for Sensor2
// -> PWM signals have a slight phase shift
sysvar::VTS::Sensor2.SetPWMStartDelay(0.02);

// Start stimulation
sysvar::VTS::Sensor1.StartStimulation();
sysvar::VTS::Sensor2.StartStimulation();

vtsSetPWMStartDelay