private void SetRFSB1Button_Click(object sender, EventArgs e)
{
int Frequency = (int)SB1RFFreq.Value;
float Amplitude = (float)SB1RFAmp.Value;
GPIB.InitDevice(20);
GPIB.SetAmplitude(Amplitude);
GPIB.SetFrequency(Frequency);
GPIB.CloseDevice();
}
public void FPGAReadMethod()
{
int Frequency = startFreq;
int CurrentWindowStep = 0;
int CurrentSideband = 0;
int CurrentPulseLength = fixed_startLength; // For fixed spectra with a varying pulse length
int numberOfFiles = this.myFileName.Length;
TextWriter myFile = new StreamWriter(myFileName[CurrentSideband], true);
if (myFile != null)
{
WriteMessage("Opened first file for writing");
}
else
{
WriteMessage("Couldn't open first file for writing", true);
}
// Create list for storing readings, get ready for 2000 data points
List <int> Readings = new List <int>(2000);
while (FPGAReadThread.IsAlive && bShouldQuitThread == false)
{
// If flag is set to reset FPGA, do so
if (bResetFPGA)
{
FPGA.SendResetSignal();
bResetFPGA = false;
myFile.Close();
return;
}
// If there are exactly 4 bytes in the queue... do nothing?
// Might be able to restructure this bit. Don't quite understand - it seems to just write a message if there are
// too many bytes, but otherwise continues as normal. Not sure where the continue statement skips to
// I think it skips the rest of this function...
if (FPGA.CheckQueue() == 4)
{
}
else
{
if (FPGA.CheckQueue() > 4)
{
WriteMessage("Too Many Bytes in Queue!!", true);
}
else
{
continue;
}
}
// Fill array of bytes with however many are in the queue
byte[] Bytes = FPGA.ReadBytes();
// So long as there are some bytes there
// Statement above means that there should always be 4
if (Bytes != null && Bytes.Length != 0)
{
byte[] Data = Bytes;
// Check for certain error codes
// This if statement can be left as-is
if (Bytes[3] != 181 && Bytes[3] != 77 && Bytes[3] != 173)
{
// Changed from WriteOutout to WriteMessage
WriteMessage("Warning: Received corrupted data!\r\n");
int Info1 = FPGA.InfoRequest();
int Info2 = FPGA.InfoRequest();
int Info3 = FPGA.InfoRequest();
int Info4 = FPGA.InfoRequest();
while ((Info1 != Info2) || (Info3 != Info4) || (Info1 != Info3))
{
Info1 = FPGA.InfoRequest();
Info2 = FPGA.InfoRequest();
Info3 = FPGA.InfoRequest();
Info4 = FPGA.InfoRequest();
}
Data = BitConverter.GetBytes(Info1);
// Changed from WriteOutout to WriteMessage
WriteMessage("Recovered successfully\r\n");
}
// Received data, need to deal with it
if (Data[3] == 181)
{
Data[3] = 0;
int NumReadings = BitConverter.ToInt32(Data, 0);
// Changed from WriteOutout to WriteMessage
WriteMessage("Found " + NumReadings.ToString() + " Readings\r\n");
uint rxbytes = FPGA.CheckQueue();
uint NumRead = 0;
byte[] buffer = new byte[rxbytes];
if (rxbytes != 0) //clear out any bytes left in the buffer... shouldn't hit this
{
FPGA.USBPort.Read(buffer, rxbytes, ref NumRead);
// Changed from WriteOutout to WriteMessage
WriteMessage("Warning: Found extra bytes in FPGA output queue\r\n");
}
FPGA.FinishInfoRequest();
List <byte> DataOut = new List <byte>(NumReadings * 2);
rxbytes = FPGA.CheckQueue();
while (DataOut.Count < NumReadings * 2)
{
rxbytes = FPGA.CheckQueue();
if (rxbytes > 0)
{
buffer = new byte[rxbytes];
FPGA.USBPort.Read(buffer, rxbytes, ref NumRead);
DataOut.AddRange(buffer);
}
}
buffer = DataOut.ToArray();
for (int j = 0; j < buffer.Length; j = j + 2)
{
int Reading = buffer[j] + 256 * buffer[j + 1];
Readings.Add(Reading);
}
foreach (int j in Readings)
{
myFile.WriteLine(j.ToString());
}
// Only send live data to the viewer if it is open
if (this.IsViewerOpen)
{
if (specType == "Fixed")
{
myViewer.addLiveData(Readings, CurrentWindowStep, 0, CurrentPulseLength);
}
else
{
myViewer.addLiveData(Readings, CurrentWindowStep, startFreqArray[CurrentSideband], 0);
}
}
// Clear buffers for writing to file, gets ready for writing more data next time
myFile.Flush();
// Clear list of readings
Readings.Clear();
if (specType == "Fixed")
{
CurrentPulseLength += fixed_stepSize;
}
FPGA.ResetDevice();
// If the Pause flag is set
while (PauseExperiment)
{
//sleep for 1ms so we don't use all the CPU cycles
System.Threading.Thread.Sleep(1000);
}
FPGA.SendReadingFinish();
//break;
}
else if (Data[3] == 77)
{
FPGA.FinishInfoRequest();
Data[3] = 0;
int ExtraData = BitConverter.ToInt32(Data, 0);
if (ExtraData == 0xAB25FC)
{
WriteMessage("Need to change frequency!\r\n");
if (bIsFreqGenEnabled)
{
//Change Frequency :)
if (specType == "Windowed")
{
if (CurrentWindowStep < sbWidth)
{
Frequency += stepSize;
GPIB.SetFrequency(Frequency);
CurrentWindowStep++;
}
else if (CurrentWindowStep >= sbWidth)
{
// This means we have come to the end of one sideband
// So flush & close that file
myFile.Flush();
myFile.Close();
CurrentSideband++;
if (CurrentSideband < (sbToScan * 2) + 1)
{
// New sideband, so open the next file, using filename from array
myFile = new StreamWriter(myFileName[CurrentSideband], true);
Frequency = startFreqArray[CurrentSideband];
GPIB.SetFrequency(Frequency);
CurrentWindowStep = 0;
}
//if we reach end of final sideband, stop experiment (need to test this section)
else
{
MessageBox.Show("Experiment Finished! (Reached final sideband)", "Bang");
bShouldQuitThread = true;
// break; // might need this??
}
}
}
else if (specType == "Continuous")
{
Frequency += stepSize;
GPIB.SetFrequency(Frequency);
CurrentWindowStep++;
}
}
else
{
WriteMessage("Frequency Generator not enabled!\r\n");
}
while (PauseExperiment)
{
//sleep for 1ms so we don't use all the CPU cycles
System.Threading.Thread.Sleep(1000);
}
FPGA.SendFreqChangeFinish();
}
else
{
WriteMessage("Received corrupted frequency change command!\r\n");
}
}
else if (Data[3] == 173)
{
FPGA.FinishInfoRequest();
Data[3] = 0;
int ExtraData = BitConverter.ToInt32(Data, 0);
if (ExtraData == 0xFC32DA)
{
WriteMessage("Received experiment stop command!\r\n");
MessageBox.Show("Experiment Finished!", "Bang");
bShouldQuitThread = true;
}
else
{
WriteMessage("Received corrupted experiment stop command!\r\n");
}
break;
}
else
{
WriteMessage("Received corrupted data (Unrecoverable)!\r\n");
}
}
}
// If it's a windowed spectrum, we will already have closed the file. Otherwise, need to flush & close it
if (specType != "Windowed")
{
myFile.Flush();
myFile.Close();
}
this.ExperimentFinished();
FPGA.ResetDevice();
}
// Method to respond to user clicking start button
private void StartButton_Click(object sender, EventArgs e)
{
// If we are restarting the experiment after it being paused, just reset the PauseExperiment flag
if (PauseExperiment == true)
{
PauseExperiment = false; // Set flag
PauseButton.Enabled = true; // Re-enable pause button
StartButton.Enabled = false; // Disable start button
OpenUSBButton.Enabled = false; // Disable open USB button
}
else
{ // Otherwise, start experiment
this.Reset(); // Reset first
if (FPGA.bUSBPortIsOpen == false)
{
WriteMessage("Can't Send Start Signal to FPGA: USB port is not open", true);
return;
}
else
{
//Grab all scan and trap parameters from form:
specType = specTypeBox.SelectedItem.ToString();
specDir = specDirBox.SelectedItem.ToString();
trapV = (float)(1000 * trapVBox.Value); //Trap voltage stored in millivolts
axFreq = (int)(1000 * axFreqBox.Value);
modcycFreq = (int)(1000 * modcycFreqBox.Value);
magFreq = (int)(1000 * magFreqBox.Value);
startFreq = (int)(1000000 * startFreqBox.Value);
carFreq = (int)(1000000 * carFreqBox.Value);
stepSize = (int)(1000 * stepSizeBox.Value);
sbToScan = (int)sbToScanBox.Value;
sbWidth = (int)sbWidthBox.Value;
rfAmp = (float)rfAmpBox.Value;
// Metadata ordering in array:
// 0: Date
// 1: Spectrum type
// 2: 729 direction
// 3: Trap voltage
// 4: Axial freq (kHz)
// 5: Modified cyc freq (kHz)
// 6: Magnetron freq (kHz)
// 7: AOM start freq (MHz)
// 8: Carrier freq (MHz)
// 9: Step size (kHz or ticks)
// 10: Sidebands/side
// 11: Sideband width (steps)
// 12: 729 RF amplitude
// 13: Number of repeats
// 14: Number interleaved
// 15: Which sideband
// 16: Starting pulse length (fixed)
// 17: Number of steps (fixed)
// 18 + i: spectrum i name
// Create new dialog to get data from user before starting the experiment
StartExperimentDialog myExperimentDialog = new StartExperimentDialog();
myExperimentDialog.ShowDialog();
if (myExperimentDialog.DialogResult != DialogResult.Cancel)
{
// Create & fill in metadata
string[] metadata = new string[23];
metadata[0] = DateTime.UtcNow.ToString("dd/MM/yyyy HH:mm:ss");
// This is all from the CoreForm
metadata[1] = specType;
metadata[2] = specDir;
metadata[3] = this.trapVBox.Value.ToString();
metadata[4] = this.axFreqBox.Value.ToString();
metadata[5] = this.modcycFreqBox.Value.ToString();
metadata[6] = this.magFreqBox.Value.ToString();
metadata[7] = this.startFreqBox.Value.ToString();
metadata[8] = this.carFreqBox.Value.ToString();
metadata[9] = this.stepSizeBox.Value.ToString();
metadata[10] = this.sbToScanBox.Value.ToString();
metadata[11] = this.sbWidthBox.Value.ToString();
metadata[12] = this.rfAmpBox.Value.ToString();
// Fill in remaining metadata from form
metadata[13] = myExperimentDialog.NumberOfRepeats.Value.ToString();
metadata[14] = myExperimentDialog.NumberOfSpectra.Value.ToString();
metadata[15] = "N/A";
metadata[16] = "N/A"; // For fixed spectra only
metadata[17] = "N/A"; // For fixed spectra only
int numberOfSpectra = (int)myExperimentDialog.NumberOfSpectra.Value;
for (int i = 0; i < numberOfSpectra; i++)
{
metadata[i + 18] = myExperimentDialog.SpectrumNames[i].Text;
}
metadata[18 + numberOfSpectra] = myExperimentDialog.NotesBox.Text;
// Retrieve the folder path selected by the user
string FolderPath = myExperimentDialog.getFilePath();
// Make sure the
if (FolderPath != null)
{
TextWriter[] myFile; // Declare array of files
// If "Continuous" experiment type has been selected
if (specType == "Continuous")
{
//Turn on frequency generator
bIsFreqGenEnabled = true;
//Start frequency is the value taken directly from the form, no windowing
startFreqArray = new int[1];
startFreqArray[0] = startFreq;
// Create a single file and put all readings in there
myFileName = new string[1];
myFile = new TextWriter[1];
// Create empty RabiSelector object to pass to writeMetadataToFile (not used)
RabiSelector myRabiSelector = new RabiSelector();
// Create the file with appropriate name & write metadata to it
writeMetadataToFile(ref myExperimentDialog, ref myRabiSelector, ref FolderPath, ref myFile, 1);
}
else if (specType == "Windowed")
{
//Turn on frequency generator
bIsFreqGenEnabled = true;
//Calculate frequency offset of sideband start frequencies from sideband centres
int offsetFreq = (int)stepSize * sbWidth / 2;
//Determine window spacing from trap frequencys and the type of spectrum selected
int windowSpace = 0;
if (specDir == "Axial")
{
windowSpace = (int)(axFreq / 2);
}
else if (specDir == "Radial")
{
windowSpace = (int)(modcycFreq / 2);
}
//Array of start frequencies for each sideband (from furthest red to furthest blue)
startFreqArray = new int[sbToScan * 2 + 1];
for (int sb = 0; sb < (sbToScan * 2 + 1); sb++)
{
startFreqArray[sb] = carFreq - offsetFreq - (windowSpace * (sbToScan - sb));
}
// We want a file for each sideband with appropriate naming
// Calculate how many files we will need - one for each R/B sideband plus one for carrier
int numberOfFiles = (int)(sbToScan * 2 + 1);
// Create array of filenames & array of files
myFileName = new string[numberOfFiles];
myFile = new TextWriter[numberOfFiles];
// Create empty RabiSelector object to pass to writeMetadataToFile (not used)
RabiSelector myRabiSelector = new RabiSelector();
// Generate filenames and actually create files
writeMetadataToFile(ref myExperimentDialog, ref myRabiSelector, ref FolderPath, ref myFile, numberOfFiles);
}
else if (specType == "Fixed")
{
// Maybe put a box for user to input which pulses are varied in length
//Start frequency is the value taken directly from the form, no windowing
startFreqArray = new int[1];
startFreqArray[0] = startFreq;
// Show form for user to enter details about fixed frequency sequence
// (need starting pulse length & step size)
RabiSelector myRabiSelector = new RabiSelector();
myRabiSelector.generateSequenceButton.Enabled = false;
myRabiSelector.pulseSelectBox.Enabled = false;
myRabiSelector.repeatsSelect.Enabled = false;
myRabiSelector.ShowDialog();
// Get starting pulse length & step size from user form
fixed_startLength = (int)myRabiSelector.startLengthSelect.Value;
fixed_stepSize = (int)myRabiSelector.stepSizeSelect.Value;
// Change step size in metadata
metadata[9] = fixed_stepSize.ToString();
metadata[16] = fixed_startLength.ToString();
metadata[17] = myRabiSelector.stepsSelect.Value.ToString();
// Create a single file and put all readings in there
myFileName = new string[1];
myFile = new TextWriter[1];
writeMetadataToFile(ref myExperimentDialog, ref myRabiSelector, ref FolderPath, ref myFile, 1);
bIsFreqGenEnabled = false;
}
// If myViewer is not open
if (IsViewerOpen)
{
myViewer.Close();
IsViewerOpen = false;
}
// Create new instance of viewer
myViewer = new Spectroscopy_Viewer.SpectroscopyViewerForm(ref metadata);
// Set up event handler to deal with viewer closing - must be done after it is constructed
myViewer.FormClosing += new FormClosingEventHandler(myViewer_FormClosing);
// Set up event handler to deal with event raised when pause button on viewer is clicked
// This should trigger the pause button in the main window
myViewer.PauseEvent += new SpectroscopyViewerForm.PauseEventHandler(PauseButton_Click);
// Show viewer
myViewer.Show();
// Set boolean to indicate that viewer is open
IsViewerOpen = true;
}
else
{
MessageBox.Show("Error selecting folder. Please try again.");
}
// Code required to start the experiment running:
bShouldQuitThread = false;
GPIB.InitDevice(19);
GPIB.SetAmplitude(rfAmp);
GPIB.SetFrequency(startFreq);
SendSetupFinish();
// Start experiment
StartReadingData();
}
}
}
}
