public Double[] StartSingleReadingWindow(double time, string output_fmt = "OD")
{
DaqBoard = new MccDaq.MccBoard(0);
MccDaq.ErrorInfo ULStat;
int FirstPoint, NumChans = HighChan - LowChan + 1, CurIndex, CurCount;
short Status;
NumPoints = (int)(time) * Rate * NumChans;
MemHandle = MccDaq.MccService.WinBufAllocEx(10 * NumPoints);
Thread.Sleep(100);
MccDaq.ScanOptions Options = MccDaq.ScanOptions.ConvertData;
ULStat = DaqBoard.AInScan(LowChan, HighChan, NumPoints, ref Rate,
MccDaq.Range.Bip10Volts, MemHandle, Options);
DaqBoard.GetStatus(out Status, out CurCount,
out CurIndex, MccDaq.FunctionType.AiFunction);
FirstPoint = CurIndex;
// recently collected data
int N = FirstPoint + NumChans;
ushort[] addata = new ushort[N];
MccDaq.MccService.WinBufToArray(MemHandle, addata, 0, N);
List <float> channel_data = new List <float>();
for (int i = 0; i <= HighChan; ++i)
{
//sum = 0;
channel_data.RemoveRange(0, channel_data.Count);
for (int j = i; j < N; j += NumChans)
{
//sum += addata[j];
channel_data.Add(addata[j]);
}
// take median voltage value
channel_data.Sort();
ADData[i] = channel_data[(Int32)(channel_data.Count / 2)];
// convert from int to double precision voltage value
ADData[i] = (ADData[i] - 32768) / (float)3276.8;
}
DaqBoard.StopBackground(MccDaq.FunctionType.AiFunction);
MccDaq.MccService.WinBufFreeEx(MemHandle);
if (output_fmt == "OD")
{
return(convertADtoOD(ADData));
}
else
{
return(ADData);
}
}
public void startContinuousRead()
{
// per channel sampling rate ((samples per second) per channel)
MccDaq.ScanOptions Options = MccDaq.ScanOptions.Background
| MccDaq.ScanOptions.Continuous;
// collect data in background continuously
DaqBoard.AInScan(LowChan, HighChan, NumPoints,
ref Rate, MccDaq.Range.Bip10Volts, MemHandle, Options);
tmrContinuousRead.Start();
}
