protected virtual void OnWaveformTransition(WaveformEventArgs e)
{
if (WaveformTransition != null)
{
WaveformTransition(this, e);
}
}
public DigitalWaveformGenerator(string line, bool periodic)
{
periodicWaveform = periodic;
waveform = new WaveformState[2];
waveform[0] = new WaveformState();
waveform[0].state = true;
waveform[0].durationMilliSec = onDuration;
waveform[1] = new WaveformState();
waveform[1].state = false;
waveform[1].durationMilliSec = offDuration;
transitionevent = new WaveformEventArgs();
lastStateIdx = 0;
digitalLine = line;
try
{
DAQTask = new Task();
DOChannel outputChannel = DAQTask.DOChannels.CreateChannel(digitalLine, "waveform", ChannelLineGrouping.OneChannelForAllLines);
outputChannel.OutputDriveType = DOOutputDriveType.ActiveDrive;
DAQTask.Start();
writer = new DigitalSingleChannelWriter(DAQTask.Stream);
}
catch (DaqException ex)
{
MessageBox.Show(ex.Message);
if (DAQTask != null)
{
DAQTask.Dispose();
DAQTask = null;
}
}
}
private void SampleAggregator_WaveformCalculated(object sender, WaveformEventArgs e)
{
SeriesCollection[0].Values.Clear();
SeriesCollection[0].Values.AddRange(e.PulseCodeModulation.Cast <Object>());
SeriesCollection2[0].Values.Clear();
SeriesCollection2[0].Values.AddRange(e.FastFourierTransform.Cast <Object>());
RaisePropertyChanged("SeriesCollection");
RaisePropertyChanged("SeriesCollection2");
}
private void ResumeGenerating()
{
bool signalLevel = GetSignalLevel(waveform[lastStateIdx].state);
if (!periodicWaveform)
{
if (rnd == null)
{
rnd = new Random();
}
if (signalLevel == true)
{
waveform[lastStateIdx].durationMicroSec = rnd.Next(onMinDuration, onMaxDuration);
}
else
{
waveform[lastStateIdx].durationMicroSec = rnd.Next(offMinDuration, offMaxDuration);
}
}
WaveformEventArgs transitionevent;
if (signalLevel == true)
{
activeTransitionCounter++;
transitionevent = new WaveformEventArgs(DigitalLineTransition.ToHigh);
}
else
{
transitionevent = new WaveformEventArgs(DigitalLineTransition.ToLow);
}
OnWaveformTransition(transitionevent);
if (waveformType == WaveformType.DigitalIO)
{
try
{
writer.BeginWriteSingleSampleSingleLine(true, signalLevel, new AsyncCallback(OnDataWritten), DAQTask);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
if (waveformType == WaveformType.TCP)
{
tcpClientGeneratorThread.Start();
running = true;
}
startCounter++;
}
public Digital_WaveformGenerator(WaveformType type, IPAddress deviceAddress, string line, bool periodic)
{
waveformType = type;
periodicWaveform = periodic;
waveform = new SignalState[2];
waveform[0] = new SignalState();
waveform[0].state = true;
waveform[0].durationMicroSec = onDuration;
waveform[1] = new SignalState();
waveform[1].state = false;
waveform[1].durationMicroSec = offDuration;
transitionevent = new WaveformEventArgs();
stateevent = new WaveformEventArgs();
lastStateIdx = 0;
digitalLine = line;
activeTransitionCounter = 0;
startCounter = 0;
if (waveformType == WaveformType.DigitalIO)
{
try
{
DAQTask = new Task();
DOChannel outputChannel = DAQTask.DOChannels.CreateChannel(digitalLine, "waveform", ChannelLineGrouping.OneChannelForAllLines);
//outputChannel.OutputDriveType = DOOutputDriveType.ActiveDrive;
DAQTask.Start();
writer = new DigitalSingleChannelWriter(DAQTask.Stream);
}
catch (DaqException ex)
{
MessageBox.Show(ex.Message);
if (DAQTask != null)
{
DAQTask.Dispose();
DAQTask = null;
}
}
}
if (waveformType == WaveformType.TCP)
{
Int32 hostport;
Int32.TryParse(line, out hostport);
tcpClientGenerator = new ClientConnection(deviceAddress.ToString(), hostport);
tcpClientGeneratorThread = new Thread(new ThreadStart(DoTCPConnection));
}
if (waveformType == WaveformType.Serial)
{
}
}
private bool prepareNextTransition()
{
lastStateIdx = (++lastStateIdx) % waveform.Length;
bool signalLevel = GetSignalLevel(waveform[lastStateIdx].state);
if (!periodicWaveform)
{
if (rnd == null)
{
rnd = new Random();
}
if (signalLevel == true)
{
waveform[lastStateIdx].durationMicroSec = rnd.Next(onMinDuration, onMaxDuration);
}
else
{
waveform[lastStateIdx].durationMicroSec = rnd.Next(offMinDuration, offMaxDuration);
}
}
WaveformEventArgs transitionevent;
if (signalLevel == true)
{
activeTransitionCounter++;
transitionevent = new WaveformEventArgs(DigitalLineTransition.ToHigh);
}
else
{
transitionevent = new WaveformEventArgs(DigitalLineTransition.ToLow);
}
OnWaveformTransition(transitionevent);
return(signalLevel);
}
protected virtual void OnWaveformTransition(WaveformEventArgs e)
{
WaveformTransition?.Invoke(this, e);
}
protected virtual void OnWaveformStateChange(WaveformEventArgs e)
{
WaveformStateChange?.Invoke(this, e);
}
private void OnDataWritten(IAsyncResult result)
{
if (DAQTask != null && DAQTask == result.AsyncState)
{
writer.EndWrite(result);
if (!running && GetSignalLevel(waveform[lastStateIdx].state) == false)
{
stopped = true;
return;
}
System.Threading.Thread.Sleep(waveform[lastStateIdx].durationMilliSec);
//if (running || GetSignalLevel(waveform[lastStateIdx].state) == true)
{
lastStateIdx = (++lastStateIdx) % waveform.Length;
bool signalLevel = GetSignalLevel(waveform[lastStateIdx].state);
if (!periodicWaveform)
{
if (rnd == null)
{
rnd = new Random();
}
if (signalLevel == true)
{
waveform[lastStateIdx].durationMilliSec = rnd.Next(onMinDuration, onMaxDuration);
}
else
{
waveform[lastStateIdx].durationMilliSec = rnd.Next(offMinDuration, offMaxDuration);
}
}
WaveformEventArgs transitionevent;
if (signalLevel == true)
{
transitionevent = new WaveformEventArgs(DigitalLineTransition.ToHigh);
}
else
{
transitionevent = new WaveformEventArgs(DigitalLineTransition.ToLow);
}
OnWaveformTransition(transitionevent);
try
{
writer.BeginWriteSingleSampleSingleLine(true, signalLevel, new AsyncCallback(OnDataWritten), DAQTask);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
// else
// {
// if (writer != null)
// writer.EndWrite(result);
// }
}
}
private static void SampleAggregator_WaveformCalculated(object sender, WaveformEventArgs e)
{
}
