public double[] GetLastSample()
{
var ptr = IntPtr.Zero;
TCHRDLLFunctionWrapper.GetLastSample(_deviceHandle, ref ptr, out var numSignals);
Marshal.Copy(ptr, _oneSampleData, 0, numSignals);
return(_oneSampleData);
}
/// <summary>
///
/// </summary>
/// <param name="ipAddress">ip address of the precitec device</param>
/// <param name="signalIds">the signals to output</param>
/// <param name="signalNames">the signal names corresponds to signal ids</param>
/// <param name="updateInterval">The interval to read data from precitec device</param>
/// <exception cref="InvalidOperationException"></exception>
public CHR2Controller(string ipAddress, int[] signalIds, string[] signalNames, int updateInterval = 50)
{
_signalNames = signalNames;
// Connect
var connectionInfo = "IP:" + ipAddress;
var connectSuccess = TCHRDLLFunctionWrapper.OpenConnection(connectionInfo, TCHRDLLFunctionWrapper.CHR_2Gen_Device, out var connectionId) == 0;
if (!connectSuccess)
{
throw new InvalidOperationException($"Connection to CHR2 device {ipAddress} failed");
}
_deviceHandle = Convert.ToUInt32(connectionId);
// Set up signals
var signalSetupSuccess = TCHRDLLFunctionWrapper.SetOutputSignals(_deviceHandle, signalIds, signalIds.Length) == 0;
if (!signalSetupSuccess)
{
throw new InvalidOperationException("Signal setup failed");
}
_oneSampleData = new double[signalIds.Length];
_sampleBuffers = new List <double[]>();
var bufferLength = 1024;
for (int i = 0; i < signalIds.Length; i++)
{
_sampleBuffers.Add(new double[bufferLength]);
}
_specData = new short[_dataLength];
// Set up timer
_timer = new DispatcherTimer(DispatcherPriority.Normal);
_timer.Tick += TimerOnElapsed;
_timer.Interval = TimeSpan.FromMilliseconds(updateInterval);
_timer.Start();
}
private void TimerOnElapsed(object sender, EventArgs eventArgs)
{
IntPtr pData = IntPtr.Zero;
//read in CHRocodile data
while (true)
{
var res = TCHRDLLFunctionWrapper.GetNextSample(_deviceHandle, ref pData, out var sigNumber);
if (res > 0)
{
//display data
Marshal.Copy(pData, _oneSampleData, 0, sigNumber);
if (sigNumber > 0)
{
for (int i = 0; i < sigNumber; i++)
{
_sampleBuffers[i][_currentDataPos] = _oneSampleData[i];
}
_currentDataPos++;
if (_currentDataPos >= _dataLength)
{
_currentDataPos = 0;
}
}
}
else
{
if (res < 0)
{
TCHRDLLFunctionWrapper.FlushInputBuffer(_deviceHandle);
}
break;
}
}
// Convert to dictionary
var curvesDict = new Dictionary <string, double[]>();
for (int i = 0; i < _signalNames.Length; i++)
{
curvesDict[_signalNames[i]] = _sampleBuffers[i];
}
OnCurvesUpdated(curvesDict);
//download spectrum
int SpecType = TCHRDLLFunctionWrapper.Raw_Spectrum;
if (TCHRDLLFunctionWrapper.DownloadDeviceSpectrum(_deviceHandle, SpecType, ref pData, out var signalCount) == 0)
{
if (signalCount > _dataLength)
{
signalCount = _dataLength;
}
Marshal.Copy(pData, _specData, 0, signalCount);
// Assign 0s to unassigned entries
for (int i = signalCount; i < _dataLength; i++)
{
_specData[i] = 0;
}
OnSpectrumDataUpdated(_specData);
}
}
