void StopRecording(int channelIndex)
{
//Detach ourselves from the sample read event queue
if (IsRecordingCh1)
{
HardwareManager.DaqBoard.ReadDone -= RecordSamples;
//add end of recording to signal to our queue
ChannelReadDataChunk end_chunk = new ChannelReadDataChunk();
end_chunk.StartIndex = 0;
end_chunk.Data = null;
_record_dataQueue.Produce(end_chunk);
//wait for our file writing to finish
if (_recordTask != null && !_recordTask.IsCompleted)
{
if (!_recordTask.Wait(1000))
{
System.Diagnostics.Debug.WriteLine("Timed out waiting on record task to end");
}
}
_recordTask = null;
}
if (channelIndex == 1)
{
IsRecordingCh1 = false;
}
}
/// <summary>
/// Event to receive and distribute analog in samples received
/// </summary>
/// <param name="args">Sample payload</param>
void RecordSamples(ReadDoneEventArgs args)
{
ChannelReadDataChunk chunk = new ChannelReadDataChunk();
chunk.StartIndex = args.StartIndex;
chunk.Data = args.Data.Clone() as double[, ];
_record_dataQueue.Produce(chunk);
}
void StartRecording(int channelIndex, Dictionary <string, string> exp_info = null)
{
//Attach ourselves to the sample read event queue
if (!IsRecordingCh1)
{
HardwareManager.DaqBoard.ReadDone += RecordSamples;
}
if (channelIndex == 1)
{
_recordTask = new Task(() =>
{
string data_file_name = CreateFilename(1) + ".data";
//Write info file
if (exp_info == null)
{
exp_info = new Dictionary <string, string>();
exp_info["Experiment type"] = "Free run";
}
exp_info["datafile"] = Path.GetFileName(data_file_name);
exp_info["daq_rate"] = HardwareSettings.DAQ.Rate.ToString();
exp_info["channel"] = channelIndex.ToString();
exp_info["mV_per_V"] = mV_per_V.ToString();
exp_info["pA_per_V"] = pA_per_V.ToString();
TextWriter infoWriter = new StreamWriter(CreateFilename(1) + ".info");
WriteExperimentInfo(BaseFNameCh1, exp_info, infoWriter);
infoWriter.Dispose();
BinaryWriter ch1File = new BinaryWriter(File.OpenWrite(data_file_name));
while (true)
{
ChannelReadDataChunk chnk = _record_dataQueue.Consume();
if (chnk.StartIndex == 0 && chnk.Data == null)
{
break;
}
for (int i = 0; i < chnk.Data.GetLength(1); i++)
{
WriteChannel1Sample(ch1File, chnk.StartIndex + i, chnk.Data[2, i] > 2, (float)chnk.Data[4, i], (float)chnk.Data[0, i],
(float)chnk.Data[6, i]);
}
}
ch1File.Dispose();
});
_recordTask.Start();
IsRecordingCh1 = true;
}
else
{
throw new NotImplementedException();
}
}