private void btnStop_Click(object sender, RoutedEventArgs e)
{
timer.IsEnabled = false;
myTask.Stop();
myTask.Dispose();
btnStart.IsEnabled = true;
btnStop.IsEnabled = false;
}
/// <summary>
/// 停止任务，回到idle状态
/// </summary>
/// <returns></returns>
public bool TryStopTask()
{
if (aiTask != null)
{
try
{
aiTask.Stop();
//之前没有，发布停事件
//OnAITaskStopped();
}
catch (Exception ex)
{
//目前啥也不用做
}
Thread.Sleep(1000);
if (aiTask != null)
{
aiTask.Dispose();
}
aiTask = null;
AIState = Status.Idle;
return(true);
}
else
{
return(false);
}
}
public void Stop()
{
this.IsInitialized = false;
if (_daqTask != null)
{
_daqTask.Stop();
_daqTask.Dispose();
}
}
private void stopButton_Click(object sender, System.EventArgs e)
{
timer.IsEnabled = false;
if (myTask != null)
{
try
{
myTask.Stop();
}
catch (Exception x)
{
MessageBox.Show(x.Message);
}
myTask.Dispose();
myTask = null;
btnStart.IsEnabled = true;
btnStop.IsEnabled = false;
}
}
private void btnStop_Click(object sender, RoutedEventArgs e)
{
if (runningTask != null)
{
runningTask.Stop();
// Dispose of the task
runningTask = null;
btnStop.IsEnabled = false;
btnStart.IsEnabled = true;
}
}
public static string GenerateWave(string sourceDevice = "Dev1", double freq = 100, double amp = 2,
string waveType = "sine")
{
waveType = waveType.ToLower();
AOFunctionGenerationType type = AOFunctionGenerationType.Sine; //default value
if (waveType.Equals("square"))
{
type = AOFunctionGenerationType.Square;
}
else if (waveType.Equals("triangle"))
{
type = AOFunctionGenerationType.Triangle;
}
NationalInstruments.DAQmx.Task myTask = new NationalInstruments.DAQmx.Task();
try
{
if (amp < 0)
{
amp *= -1;
}
if (amp > 5)
{
amp = 5;
}
myTask.AOChannels.CreateFunctionGenerationChannel(sourceDevice + "/fgen",
"fgen",
type,
freq, //freq
amp); //amplitude
// verify the task before doing the waveform calculations
myTask.Control(TaskAction.Verify);
myTask.Stop();
myTask.AOChannels[0].FunctionGenerationType = type;
myTask.AOChannels[0].FunctionGenerationFrequency = freq;
myTask.AOChannels[0].FunctionGenerationAmplitude = amp;
myTask.Start();
}
catch (DaqException err)
{
myTask.Dispose();
return("Fail" + err.Message);
}
myTask.Dispose();
return("OK");
}
/// <summary>
/// 停止任务，回到idle状态
/// </summary>
/// <returns></returns>
public bool StopTask()
{
if (aiTask != null)
{
aiTask.Stop();
aiTask.Dispose();
aiTask = null;
AIState = Status.Idle;
OnStatusChanged();
return(true);
}
else
{
return(false);
}
}
void StopTask()
{
try
{
runningTask = null;
inputTask.Stop();
outputTask.Stop();
inputTask.Dispose();
outputTask.Dispose();
}
catch (Exception ex)
{
WarningDAQUpdate?.Invoke(ex.Message);
}
//Dispose();
}
public void GenerateWave(string device = "Dev1", double freq = 100, double amp = 2,
AOFunctionGenerationType type = AOFunctionGenerationType.Sine)
{
try
{
if (myTask == null)
{
myTask = new NationalInstruments.DAQmx.Task();
if (amp < 0)
{
amp *= -1;
}
if (amp > 5)
{
amp = 5;
}
myTask.AOChannels.CreateFunctionGenerationChannel(device + "/fgen",
"fgen",
type,
freq, //freq
amp); //amplitude
// verify the task before doing the waveform calculations
myTask.Control(TaskAction.Verify);
}
else
{
myTask.Stop();
myTask.AOChannels[0].FunctionGenerationType = type;
myTask.AOChannels[0].FunctionGenerationFrequency = freq;
myTask.AOChannels[0].FunctionGenerationAmplitude = amp;
}
myTask.Start();
}
catch (DaqException err)
{
MessageBox.Show(err.Message);
myTask.Dispose();
myTask = null;
}
}
/// <summary>
/// 停止任务，回到idle状态
/// </summary>
/// <returns></returns>
public bool TryStopTask()
{
if (aiTask != null)
{
try
{
aiTask.Stop();
}
catch (Exception ex)
{
//目前啥也不用做
}
aiTask.Dispose();
aiTask = null;
AIState = Status.Idle;
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Stopper den asynkrone indlæsning af data fra DAQ'en
/// </summary>
public void stoptInputAsync()
{
runningTask = null;
analogInTask.Stop();
analogInTask.Dispose();
}