/// <summary>
/// The secondary thread used to get data from USB/RS232 COM port
/// </summary>
private void ReceiveThreadfunc()
{
//this is the object used to keep current configuration data
RFEConfiguration objCurrentConfiguration = null;
RFESweepData objSweepTracking = null;
m_bThreadTrackingEnabled = false;
int nTrackingStepRetry = 0;
while (m_bRunReceiveThread)
{
string strReceived = "";
#if SUPPORT_EXPERIMENTAL
while (m_bPortConnected && !m_bModeAPI)
#else
while (m_bPortConnected && m_bRunReceiveThread)
#endif
{
string sNewText = "";
try
{
Monitor.Enter(m_serialPortObj);
if (m_serialPortObj.IsOpen && m_serialPortObj.BytesToRead > 0)
{
sNewText = m_serialPortObj.ReadExisting();
}
}
catch (IOException) { }
catch (TimeoutException) { }
catch (Exception obExeption)
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(obExeption);
Monitor.Exit(m_arrReceivedData);
}
finally { Monitor.Exit(m_serialPortObj); }
if (sNewText.Length > 0)
{
if (m_bDebugTraces)
{
//Debug only, do not enable this in production
m_ReceivedBytesMutex.WaitOne();
m_sAllReceivedBytes += sNewText;
m_ReceivedBytesMutex.ReleaseMutex();
}
strReceived += sNewText;
sNewText = "";
}
if (strReceived.Length > 25240)
{
//Safety code, some error prevented the string from being processed in several loop cycles. Reset it.
if (m_bDebugTraces)
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue("Received string truncated (" + strReceived.Length + ")");
Monitor.Exit(m_arrReceivedData);
}
strReceived = "";
}
if (strReceived.Length > 0)
{
if (strReceived[0] == '#')
{
int nEndPos = strReceived.IndexOf("\r\n");
if (nEndPos >= 0)
{
string sNewLine = strReceived.Substring(0, nEndPos);
string sLeftOver = strReceived.Substring(nEndPos + 2);
strReceived = sLeftOver;
RFEConfiguration objNewConfiguration = null;
if ((sNewLine.Length > 2) && (sNewLine.Substring(0, 3) == "#K1"))
{
if (m_bThreadTrackingEnabled==false)
{
//if we are starting tracking here, send the request for first step right away
m_objRFEGen.SendCommand_TrackingStep(0);
SendCommand_TrackingStep(0);
}
m_bThreadTrackingEnabled=true;
nTrackingStepRetry = 0;
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(sNewLine);
Monitor.Exit(m_arrReceivedData);
}
if ((sNewLine.Length > 2) && (sNewLine.Substring(0, 3) == "#K0"))
{
m_bThreadTrackingEnabled = false;
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(sNewLine);
Monitor.Exit(m_arrReceivedData);
}
else if ((sNewLine.Length > 5) && ((sNewLine.Substring(0, 6) == "#C2-F:") || (sNewLine.Substring(0, 6) == "#C3-G:")))
{
m_bThreadTrackingEnabled=false;
if (m_bDebugTraces)
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue("Received Config:" + strReceived.Length.ToString("D5"));
Monitor.Exit(m_arrReceivedData);
}
//Standard configuration expected
objNewConfiguration = new RFEConfiguration();
if (objNewConfiguration.ProcessReceivedString(sNewLine))
{
objCurrentConfiguration = new RFEConfiguration(objNewConfiguration);
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(objNewConfiguration);
Monitor.Exit(m_arrReceivedData);
}
}
else
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(sNewLine);
Monitor.Exit(m_arrReceivedData);
}
}
}
else if (strReceived[0] == '$')
{
if ((strReceived.Length > 4) && (strReceived[1] == 'C'))
{
UInt16 nSize = 2; //account for CR+LF
switch (strReceived[2])
{
case 'c':
{
//Calibration data
nSize += (byte)(Convert.ToByte(strReceived[3]) + 4);
break;
}
case 'b':
{
//Memory data dump
nSize += (UInt16)((Convert.ToByte(strReceived[4]) + 1) * 16 + 10);
break;
}
}
//This is standard for all 'C' data dumps
if ((nSize > 2) && (strReceived.Length >= nSize))
{
string sNewLine = strReceived.Substring(0, nSize);
string sLeftOver = strReceived.Substring(nSize);
strReceived = sLeftOver;
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(sNewLine);
Monitor.Exit(m_arrReceivedData);
}
}
else if ((strReceived.Length > 1) && (strReceived[1] == 'q'))
{
//this is internal calibration data dump
ushort nReceivedLength = (byte)strReceived[2];
bool bLengthOK = (strReceived.Length >= (3 + nReceivedLength + 2));
if (bLengthOK)
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(strReceived);
Monitor.Exit(m_arrReceivedData);
strReceived = strReceived.Substring(3 + nReceivedLength + 2);
}
}
else if ((strReceived.Length > 1) && (strReceived[1] == 'D'))
{
//This is dump screen data
if (m_bDebugTraces)
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue("Received $D" + strReceived.Length.ToString("D5"));
Monitor.Exit(m_arrReceivedData);
}
if (strReceived.Length >= (4 + 128 * 8))
{
string sNewLine = "$D" + strReceived.Substring(2, 128 * 8);
string sLeftOver = strReceived.Substring(4 + 128 * 8);
strReceived = sLeftOver;
RFEScreenData objData = new RFEScreenData();
if (objData.ProcessReceivedString(sNewLine))
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(objData);
Monitor.Exit(m_arrReceivedData);
}
else
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(sNewLine);
Monitor.Exit(m_arrReceivedData);
}
}
}
else if ((strReceived.Length > 2) && (strReceived[1] == 'S'))
{
//Standard spectrum analyzer data
ushort nReceivedLength = (byte)strReceived[2];
if (m_bDebugTraces)
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue("Received $S" + nReceivedLength.ToString("D5"));
Monitor.Exit(m_arrReceivedData);
}
bool bLengthOK = (strReceived.Length >= (3 + nReceivedLength + 2));
bool bFullStringOK = false;
if (bLengthOK && (strReceived.Substring(3 + nReceivedLength, 2) == "\r\n"))
{
bFullStringOK = true;
}
if (bFullStringOK)
{
//So we are here because received the full set of chars expected, and all them are apparently of valid characters
if (nReceivedLength <= MAX_SPECTRUM_STEPS)
{
string sNewLine = "$S" + strReceived.Substring(3, nReceivedLength);
if (objCurrentConfiguration != null)
{
UInt16 nSweepSteps = objCurrentConfiguration.nFreqSpectrumSteps;
if (m_bThreadTrackingEnabled)
{
nSweepSteps = nReceivedLength;
}
RFESweepData objSweep = new RFESweepData(objCurrentConfiguration.fStartMHZ, objCurrentConfiguration.fStepMHZ, nSweepSteps);
if (objSweep.ProcessReceivedString(sNewLine, objCurrentConfiguration.fOffset_dB))
{
if (!m_bThreadTrackingEnabled)
{
//Normal spectrum analyzer sweep data
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(objSweep);
Monitor.Exit(m_arrReceivedData);
}
else
{
//tracking generator sweep data, we capture a sweep point every time to build a new full objSweepTracking
if (m_nRFGenTracking_CurrentSweepStep == 0)
{
objSweepTracking = new RFESweepData(m_objRFEGen.RFGenStartFrequencyMHZ, m_objRFEGen.RFGenStepFrequencyMHZ, m_objRFEGen.RFGenSweepSteps);
}
float fMaxDB = objSweep.GetAmplitudeDBM(objSweep.GetPeakStep());
objSweepTracking.SetAmplitudeDBM(m_nRFGenTracking_CurrentSweepStep, fMaxDB);
if (!m_bTrackingNormalizing || (fMaxDB > MIN_AMPLITUDE_TRACKING_NORMALIZE) || !m_bTrackingAllowed)
{
//if we are normalizing, make sure the value read is correct or either do not increase step
m_nRFGenTracking_CurrentSweepStep++;
}
else
{
nTrackingStepRetry++;
if (m_bTrackingNormalizing && nTrackingStepRetry > (m_objRFEGen.RFGenSweepSteps / 5))
{
//if we retried about the same number of steps the sweep have, then something is really wrong
m_objRFEGen.SendCommand_GeneratorRFPowerOFF();
m_bThreadTrackingEnabled = false; //be done with thread tracking activity, so main thread knows
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue("Too many retries normalizing data. Review your setup and restart Spectrum Analyzer");
Monitor.Exit(m_arrReceivedData);
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(objSweepTracking); //send whatever we have, we will detect it outside the thread
Monitor.Exit(m_arrReceivedData);
}
}
if (m_bThreadTrackingEnabled)
{
if (m_nRFGenTracking_CurrentSweepStep <= m_objRFEGen.RFGenSweepSteps)
{
m_objRFEGen.SendCommand_TrackingStep(m_nRFGenTracking_CurrentSweepStep);
SendCommand_TrackingStep(m_nRFGenTracking_CurrentSweepStep);
}
else
{
//we are done with a tracking sweep capture objSweepTracking, make it available
m_nTrackingNormalizingPass++;
m_nTrackingPass++;
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(objSweepTracking);
Monitor.Exit(m_arrReceivedData);
//If we need to restart, do it from first step
m_nRFGenTracking_CurrentSweepStep = 0;
if ( (m_bTrackingNormalizing && (m_nTrackingNormalizingPass > m_nAutoStopSNATrackingCounter)) ||
!m_bTrackingAllowed ||
(!m_bTrackingNormalizing && ((m_nAutoStopSNATrackingCounter!=0) && (m_nTrackingPass > m_nAutoStopSNATrackingCounter)))
)
{
//if normalizing is completed, or if we have finished tracking manually or automatically, we are done with RF power
m_objRFEGen.SendCommand_GeneratorRFPowerOFF();
m_bThreadTrackingEnabled = false; //be done with thread tracking activity, so main thread knows
}
else
{
//start all over again a full new sweep
m_objRFEGen.SendCommand_TrackingStep(m_nRFGenTracking_CurrentSweepStep);
SendCommand_TrackingStep(m_nRFGenTracking_CurrentSweepStep);
}
}
}
}
}
else
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(sNewLine);
Monitor.Exit(m_arrReceivedData);
}
}
}
else
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue("Ignored $S of size " + nReceivedLength.ToString() + " expected " + FreqSpectrumSteps.ToString());
Monitor.Exit(m_arrReceivedData);
}
strReceived = strReceived.Substring(3 + nReceivedLength + 2);
}
else if (bLengthOK)
{
//So we are here because the string doesn't end with the expected chars, but has the right length.
//The most likely cause is a truncated string was received, and some chars are from next string, not this one
//therefore we truncate the line to avoid being much larger, and start over again next time.
int nPosNextLine = strReceived.IndexOf("\r\n");
if (nPosNextLine >= 0)
{
strReceived = strReceived.Substring(nPosNextLine + 2);
}
}
}
else if ((strReceived.Length > 3) && (strReceived[1] == 's'))
{
//Extended API spectrum analyzer data
ushort nReceivedLength = (byte)strReceived[2];
nReceivedLength = (ushort)(nReceivedLength * 0x100 + (byte)strReceived[3]);
if (strReceived.Length >= (4 + nReceivedLength + 2))
{
if (nReceivedLength <= MAX_SPECTRUM_STEPS)
{
string sNewLine = "$S" + strReceived.Substring(4, nReceivedLength);
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(sNewLine);
Monitor.Exit(m_arrReceivedData);
}
else
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue("Ignored $S of size " + nReceivedLength.ToString() + " expected " + FreqSpectrumSteps.ToString());
Monitor.Exit(m_arrReceivedData);
}
string sLeftOver = strReceived.Substring(4 + nReceivedLength + 2);
strReceived = sLeftOver;
}
}
else if ((strReceived.Length > 10) && (strReceived[1] == 'R'))
{
//Raw data
int nPos = strReceived.IndexOf('-');
if ((nPos > 2) && (nPos < 10))
{
int nSize = Convert.ToInt32(strReceived.Substring(2, nPos - 2));
if (strReceived.Length > (nSize + nPos + 2))
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue("Received RAW data " + nSize.ToString());
m_arrReceivedData.Enqueue("$R" + strReceived.Substring(nPos + 1, nSize));
Monitor.Exit(m_arrReceivedData);
strReceived = strReceived.Substring(nSize + nPos + 1 + 2);
}
}
}
}
else
{
int nEndPos = strReceived.IndexOf("\r\n");
if (nEndPos >= 0)
{
string sNewLine = strReceived.Substring(0, nEndPos);
string sLeftOver = strReceived.Substring(nEndPos + 2);
strReceived = sLeftOver;
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue(sNewLine);
Monitor.Exit(m_arrReceivedData);
}
else
{
//diagnosis only
if (m_bDebugTraces)
{
Monitor.Enter(m_arrReceivedData);
m_arrReceivedData.Enqueue("DEBUG partial:" + strReceived);
Monitor.Exit(m_arrReceivedData);
}
}
}
}
if (m_eMode!=eMode.MODE_TRACKING)
Thread.Sleep(10);
else
Thread.Sleep(2); //in tracking mode we want to be as fast as possible
}
Thread.Sleep(500);
}
}
