public void setSweep()
{
double[] fftFreqAverage = new double[segments.Length];
for (int i = 0; i < fftFreqAverage.Length; i++)
{
fftFreqAverage[i] = 0;
}
sweepParams = new AgSalLib.SweepParms();
sweepParams.numSweeps = 1; // 0 = sweep forever
sweepParams.numSegments = (uint)segments.Length;
flowControl = new AgSalLib.salFlowControl();
float maxBytesPerSec = 500e3F;
flowControl.pacingPolicy = 1;
flowControl.maxBacklogSeconds = 0.5F;
flowControl.maxBacklogMessages = 50;
flowControl.maxBytesPerSec = maxBytesPerSec;
connectToSensor();
getSensorCapibilities();
pSegmentTable = new AgSalLib.FrequencySegment[segments.Length];
numPoints = (int)(fftBlockSize * freqSpan / sensorCapabilities.maxSampleRate);
amplitudeData = new float[numPoints];
int firstPoint = (fftBlockSize - numPoints) / 2;
for (var i = 0; i < segments.Length; i++)
{
//numPoints = (int)(fftBlockSize * segmentRange[i] / sensorCapabilities.maxSampleRate);
//amplitudeData = new float[numPoints];
//int firstPoint = (fftBlockSize - numPoints) / 2;
pSegmentTable[i].numFftPoints = (uint)fftBlockSize;
pSegmentTable[i].numPoints = (uint)numPoints;
pSegmentTable[i].firstPoint = (uint)firstPoint;
pSegmentTable[i].centerFrequency = segments[i];
pSegmentTable[i].sampleRate = sensorCapabilities.maxSampleRate;
}
Console.WriteLine("323");
segmentCallback = new AgSalLib.SAL_SEGMENT_CALLBACK(callback);
tempRow.Add("INT_TIME");
tempRow.Add("INT_LAT");
tempRow.Add("INT_LON");
tempRow.Add("EXT_TIME");
tempRow.Add("EXT_LAT");
tempRow.Add("EXT_LON");
}
private bool DetectSegment(SweepParams measParams,
FFTParams fftParams, List <double> powerList,
List <double> frequencies, double cf, uint numFftsToCopy,
ref bool overloadFlag)
{
AgSalLib.SalError err;
AgSalLib.SweepParms sweepParams = new AgSalLib.SweepParms();
AgSalLib.FrequencySegment[] fs
= new AgSalLib.FrequencySegment[1];
switch (measParams.Window.ToLower())
{
case "hanning": sweepParams.window =
sweepParams.window = AgSalLib.WindowType.Window_hann;
break;
case "gauss-top": sweepParams.window =
sweepParams.window = AgSalLib.WindowType.Window_gaussTop;
break;
case "flattop": sweepParams.window =
sweepParams.window = AgSalLib.WindowType.Window_flatTop;
break;
case "rectangular": sweepParams.window =
sweepParams.window = AgSalLib.WindowType.Window_uniform;
break;
default:
Utilites.LogMessage("Invalid window type in " +
"calibration json file");
return(true);
}
switch (measParams.TimeOverlap)
{
case 50:
fs[0].overlapType =
AgSalLib.OverlapType.OverlapType_on;
break;
default:
fs[0].overlapType =
AgSalLib.OverlapType.OverlapType_off;
break;
}
switch (measParams.Detector.ToLower())
{
case "rms": fs[0].averageType =
fs[0].averageType = AgSalLib.AverageType.Average_rms;
break;
case "sample": fs[0].averageType =
fs[0].averageType = AgSalLib.AverageType.Average_off;
break;
case "positive": fs[0].averageType =
fs[0].averageType = AgSalLib.AverageType.Average_peak;
break;
default:
Utilites.LogMessage("Invalid Detector type in " +
"calibration json file");
return(true);
}
switch (measParams.Antenna)
{
case 0:
fs[0].antenna =
AgSalLib.AntennaType.Antenna_Terminated2;
break;
case 1:
fs[0].antenna =
AgSalLib.AntennaType.Antenna_1;
break;
case 2:
fs[0].antenna =
AgSalLib.AntennaType.Antenna_2;
break;
default:
Utilites.LogMessage("Invalid antenna value " +
"in cal json file");
return(true);
}
sweepParams.numSweeps = 1;
sweepParams.numSegments = 1;
sweepParams.sweepInterval = 0.0;
sweepParams.monitorMode = AgSalLib.MonitorMode.MonitorMode_off;
sweepParams.monitorInterval = 0.0;
// data return type for sweepParams is always real float32 dbm
fs[0].numFftPoints = fftParams.NumFftBins;
fs[0].numAverages = fftParams.NumFftsToAvg;
fs[0].firstPoint = 0;
fs[0].numPoints = fs[0].numFftPoints;
fs[0].centerFrequency = cf;
fs[0].sampleRate = fftParams.SampleRate;
fs[0].preamp = measParams.PreAmp;
fs[0].attenuation = measParams.Attenuation;
fs[0].dataType = AgSalLib.FftDataType.FftData_db;
// Setup pacing
AgSalLib.salFlowControl flowControl = new AgSalLib.salFlowControl();
flowControl.pacingPolicy = 1; // wait when full
flowControl.maxBacklogMessages = 50;
err = AgSalLib.salStartSweep2(out measHandle, sensorHandle,
ref sweepParams, ref fs, ref flowControl, null);
if (SensorError(err, "salStartSweep"))
{
if (err == AgSalLib.SalError.SAL_ERR_SENSOR_NOT_CONNECTED)
{
// lost connection to sensor, kill the process
// service will start it again
Environment.Exit(1);
}
return(true);
}
AgSalLib.SweepStatus status;
double elapsed;
AgSalLib.salGetSweepStatus2(measHandle, 0, out status, out elapsed);
// wait until sweep is finished
while (status == AgSalLib.SweepStatus.SweepStatus_running)
{
AgSalLib.salGetSweepStatus2(measHandle, 0, out status, out elapsed);
}
// get data from sweep
AgSalLib.SegmentData dataHeader = new AgSalLib.SegmentData();
// Agilent DLL requires float array even though it uses double
// everywhere else ..... annoying
float[] frequencyData = new float[fftParams.NumFftBins];
// how long to read before exiting
int maxDataReadMilliSeconds = 1000;
DateTime t0 = DateTime.Now;
bool dataRetrieved = false;
int startIndex = 0;
while (!dataRetrieved)
{
TimeSpan elapsedTime = DateTime.Now.Subtract(t0);
if (elapsedTime.Milliseconds > maxDataReadMilliSeconds)
{
Utilites.LogMessage("Getting segment data timed out, " +
"restarting cal");
}
err = AgSalLib.salGetSegmentData(measHandle,
out dataHeader, frequencyData,
(uint)frequencyData.Length * 4);
switch (err)
{
case AgSalLib.SalError.SAL_ERR_NONE:
if (dataHeader.errorNum != AgSalLib.SalError.SAL_ERR_NONE)
{
string message = "Segment data header returned an error: \n\n";
message += "errorNumber: " + dataHeader.errorNum.ToString() + "\n";
message += "errorInfo: " + dataHeader.errorInfo;
Utilites.LogMessage(message);
return(true);
}
// get the data
// check if need to remove anti aliasing
// need startIndex after the while loop so declared outside
if (measParams.RemoveAntiAliasing)
{
startIndex = GetStartIndex(fftParams.SampleRate,
(int)fftParams.NumFftBins);
}
FloatArrayToListOfDoubles(frequencyData,
powerList, numFftsToCopy, startIndex);
// check if overload occured
if (dataHeader.overload != 0)
{
overloadFlag = true;
}
else
{
overloadFlag = false;
}
dataRetrieved = true;
break;
case AgSalLib.SalError.SAL_ERR_NO_DATA_AVAILABLE:
// data is not available yet ...
break;
case AgSalLib.SalError.SAL_ERR_SENSOR_NOT_CONNECTED:
// lost connection to sensor, kill the process
// service will start it again
Environment.Exit(1);
break;
default:
SensorError(err, "salGetSegmentData");
break;
}
}
if (frequencies != null)
{
// calculate frquencies
for (int i = 0; i < numFftsToCopy; i++)
{
frequencies.Add(dataHeader.startFrequency +
(startIndex - 1) * dataHeader.frequencyStep +
i * dataHeader.frequencyStep);
}
}
return(false);
}
