Stops a running task.
Namespace:
Quanser.Hardware
Assembly:
Quanser.Hardware.Hil (in Quanser.Hardware.Hil.dll)
Syntax
Visual Basic (Declaration) |
---|
Sub Stop |
JavaScript |
---|
function stop(); |
Remarks
Examples
This example illustrates how to stop a task. The task reads analog channels 0-3
every millisecond using a hardware clock. The data may be processed each sampling instant.
It runs for 5 seconds before stopping.
Exceptions are ignored for simplicity.
C# | Copy Code |
---|
int [] channels = { 0, 1, 2, 3 };
double frequency = 1000;
int samples = 5000;
int samplesInBuffer = frequency;
int samplesToRead = 1;
double [] buffer = new double [samplesToRead * channels.Length];
Hil.Task task;
task = card.TaskCreateAnalogReader(samplesInBuffer, channels);
task.Start(Hil.Clock.Hardware0, frequency, samples);
for (int index = 0; index < samples; index += samplesToRead) {
/* Block (if necessary) waiting for next samplesToRead samples */
task.ReadAnalog(samplesToRead, buffer);
/* ... process sample ... */
}
task.Stop();
|
Visual Basic | Copy Code |
---|
Dim channels() As Integer = {0, 1, 2, 3}
Dim frequency as Double = 1000
Dim samples As Integer = 5000
Dim samplesInBuffer As Integer = frequency
Dim samplesToRead As Integer = 1
Dim buffer(samplesToRead * channels.Length - 1) As Double
Dim task As Hil.Task
Dim index As Integer
task = card.TaskCreateAnalogReader(samplesInBuffer, channels)
task.Start(Hil.Clock.Hardware0, frequency, samples)
For index = 0 To samples - 1 Step samplesToRead
' Block (if necessary) waiting for next samplesToRead samples
task.ReadAnalog(samplesToRead, buffer)
' ... process sample ...
Next
task.Stop()
|
Visual C++ | Copy Code |
---|
array<int>^ channels = { 0, 1, 2, 3 };
double frequency = 1000;
int samples = 5000;
int samplesInBuffer = frequency;
int samplesToRead = 1;
array<double>^ buffer = gcnew array<double>(samplesToRead * channels->Length);
Hil::Task^ task;
task = card->TaskCreateAnalogReader(samplesInBuffer, channels);
task->Start(Hil::Clock::Hardware0, frequency, samples);
for (int index = 0; index < samples; index += samplesToRead) {
/* Block (if necessary) waiting for next samplesToRead samples */
task->ReadAnalog(samplesToRead, buffer);
/* ... process sample ... */
}
task->Stop();
|
Exceptions
Exception | Condition |
---|
Quanser.Hardware..::.HilException |
If an error occurs attempting to stop the task then an exception is thrown. This situtation
is unlikely to occur if the task was successfully started.
|
See Also