private void OnDataWritten(IAsyncResult result)
{
if (waveformType == WaveformType.DigitalIO)
{
if (DAQTask != null && DAQTask == result.AsyncState)
{
writer.EndWrite(result);
long elapsed = delaystopwatch.ElapsedTicks;
if (stopimmediate || (!running && GetSignalLevel(waveform[lastStateIdx].state) == false))
{
stopped = true;
return;
}
long durationMicrosec = waveform[lastStateIdx].durationMicroSec - Convert.ToInt64(elapsed / microsec2ticks);
NOP(durationMicrosec);
delaystopwatch.Restart();
if (stopimmediate || (!running && GetSignalLevel(waveform[lastStateIdx].state) == false))
{
stopped = true;
return;
}
bool nextLevel = prepareNextTransition();
try
{
writer.BeginWriteSingleSampleSingleLine(true, nextLevel, new AsyncCallback(OnDataWritten), DAQTask);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
}
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);
// }
}
}
