private void UpdateButton_Click(object sender, System.EventArgs e) /* Handles UpdateButton.Click */
{
bool IsValidNumber = true;
float EngUnits = 0.0f;
try
{
EngUnits = float.Parse(txtVoltsToSet.Text);
}
catch (Exception ex)
{
MessageBox.Show(txtVoltsToSet.Text + " is not a valid voltage value", "Invalid Voltage ", MessageBoxButtons.OK, MessageBoxIcon.Error);
IsValidNumber = false;
}
if (IsValidNumber)
{
// Parameters:
// Chan :the D/A output channel
// Range :ignored if board does not have programmable rage
// DataValue :the value to send to Chan
ushort DataValue = 0;
MccDaq.ErrorInfo ULStat = DaqBoard.FromEngUnits(Range, EngUnits, out DataValue);
ULStat = DaqBoard.AOut(Chan, Range, DataValue);
lblValueSent.Text = "The count sent to DAC channel " + Chan.ToString("0") + " was:";
lblVoltage.Text = "The voltage at DAC channel " + Chan.ToString("0") + " is:";
lblShowValue.Text = DataValue.ToString("0");
lblShowVoltage.Text = EngUnits.ToString("0.0##") + " Volts";
}
}
private void UpdateButton_Click(object sender, System.EventArgs e)
{
bool IsValidNumber = true;
float EngUnits = 0.0f;
IsValidNumber = float.TryParse(txtVoltsToSet.Text, out EngUnits);
if (IsValidNumber)
{
// Parameters:
// Chan :the D/A output channel
// Range :ignored if board does not have programmable rage
// DataValue :the value to send to Chan
ushort DataValue = 0;
float OutVal;
MccDaq.ErrorInfo ULStat = DaqBoard.FromEngUnits(Range, EngUnits, out DataValue);
ULStat = DaqBoard.AOut(Chan, Range, DataValue);
lblValueSent.Text = "The count sent to DAC channel " + Chan.ToString("0") + " was:";
lblVoltage.Text = "The voltage at DAC channel " + Chan.ToString("0") + " is:";
lblShowValue.Text = DataValue.ToString("0");
OutVal = ConvertToVolts(DataValue);
lblShowVoltage.Text = OutVal.ToString("0.0#####") + " Volts";
}
}
private void btnSendData_Click(object sender, System.EventArgs e)
{
float volts = 0.0F;
ushort daCounts = 0;
int chan = 0;
foreach (TextBox box in _txtAOVolts)
{
if (chan <= MaxChan)
{
//get voltage to output
volts = float.Parse(box.Text);
// convert from voltage to binary counts
DaqBoard.FromEngUnits(Range, volts, out daCounts);
// load D/A
DaqBoard.AOut(chan, Range, daCounts);
++chan;
}
}
}
public frmSendAData()
{
// This call is required by the Windows Form Designer.
InitializeComponent();
// Initiate error handling
// activating error handling will trap errors like
// bad channel numbers and non-configured conditions.
// Parameters:
// MccDaq.ErrorReporting.PrintAll :all warnings and errors encountered will be printed
// MccDaq.ErrorHandling.StopAll :if an error is encountered, the program will stop
MccDaq.ErrorInfo ULStat = MccDaq.MccService.ErrHandling(MccDaq.ErrorReporting.PrintAll, MccDaq.ErrorHandling.StopAll);
// Create a new MccBoard object for Board 0
DaqBoard = new MccDaq.MccBoard(0);
MemHandle = MccDaq.MccService.WinBufAlloc(NumPoints); // set aside memory to hold data
//generate waveform
ushort FScale = 0;
DaqBoard.FromEngUnits(MccDaq.Range.Bip5Volts, 5.0f, out FScale);
for (int i = 0; i <= NumPoints - 1; ++i)
{
DAData[i] = Convert.ToUInt16((i * FScale) / NumPoints);
}
//move waveform to buffer
FirstPoint = 0;
ULStat = MccDaq.MccService.WinArrayToBuf(ref DAData[0], MemHandle, FirstPoint, NumPoints);
lblAOutData = (new Label[] { _lblAOutData_0, _lblAOutData_1 });
}
private void cmdStart_Click(object eventSender, System.EventArgs eventArgs) /* Handles cmdStart.Click */
{
cmdStart.Enabled = false;
// Select the trigger source using Mccdaq.MccBoard.SetTrigger()
// Parameters:
// TrigType :the type of triggering based on external trigger source
// LowThreshold :Low threshold when the trigger input is analog
// HighThreshold :High threshold when the trigger input is analog
float highVal = 1.0F;
MccDaq.Range Range = MccDaq.Range.Bip10Volts; // analog trigger range
ushort HighThreshold = 0;
MccDaq.ErrorInfo ULStat = DaqBoard.FromEngUnits(Range, highVal, out HighThreshold);
float lowVal = 0.1F;
ushort LowThreshold = 0;
ULStat = DaqBoard.FromEngUnits(Range, lowVal, out LowThreshold);
MccDaq.TriggerType TrigType = MccDaq.TriggerType.TrigAbove;
ULStat = DaqBoard.SetTrigger(TrigType, LowThreshold, HighThreshold);
if (ULStat.Value == MccDaq.ErrorInfo.ErrorCode.NoErrors)
{
// Collect the values with MccDaq.MccBoard.AInScan()
// Parameters:
// LowChan :the first channel of the scan
// HighChan :the last channel of the scan
// Count :the total number of A/D samples to collect
// Rate :sample rate
// Range :the range for the board
// MemHandle :Handle for Windows buffer to store data in
// Options :data collection options
int LowChan = 0; // first channel to acquire
HighChan = int.Parse(txtHighChan.Text); // last channel to acquire
if (HighChan > 7)
{
HighChan = 7;
}
txtHighChan.Text = HighChan.ToString();
int Count = NumPoints; // total number of data points to collect
int Rate = 390; // per channel sampling rate ((samples per second) per channel)
Range = MccDaq.Range.Bip5Volts; // set the range
MccDaq.ScanOptions Options = MccDaq.ScanOptions.ConvertData // return data as 12-bit values
| MccDaq.ScanOptions.ExtTrigger;
ULStat = DaqBoard.AInScan(LowChan, HighChan, Count, ref Rate, Range, MemHandle, Options);
if (ULStat.Value == MccDaq.ErrorInfo.ErrorCode.BadRange)
{
MessageBox.Show("Change the Range argument to one supported by this board.", "Unsupported Range", 0);
}
// Transfer the data from the memory buffer set up by Windows to an array
ULStat = MccDaq.MccService.WinBufToArray(MemHandle, out ADData[0], FirstPoint, Count);
for (int i = 0; i <= HighChan; ++i)
{
lblADData[i].Text = ADData[i].ToString("0");
}
for (int j = HighChan + 1; j <= 7; ++j)
{
lblADData[j].Text = "";
}
}
cmdStart.Enabled = true;
}
public frmStatusDisplay()
{
// This call is required by the Windows Form Designer.
InitializeComponent();
// Initiate error handling
// activating error handling will trap errors like
// bad channel numbers and non-configured conditions.
// Parameters:
// MccDaq.ErrorReporting.PrintAll :all warnings and errors encountered will be printed
// MccDaq.ErrorHandling.StopAll :if an error is encountered, the program will stop
MccDaq.ErrorInfo ULStat = MccDaq.MccService.ErrHandling(MccDaq.ErrorReporting.PrintAll, MccDaq.ErrorHandling.StopAll);
// Create a new MccBoard object for Board 0
DaqBoard = new MccDaq.MccBoard(0);
// set aside memory to hold A/D data
ADMemHandle = MccDaq.MccService.WinBufAlloc(NumPoints);
// set aside memory to hold D/A data
DAMemHandle = MccDaq.MccService.WinBufAlloc(NumPoints);
// Generate D/A ramp data to be output via MccDaq.MccBoard.AOutScan function
ushort FScale =0;
DaqBoard.FromEngUnits(MccDaq.Range.Bip5Volts, 5.00f, out FScale);
for (int i=0; i<=NumPoints - 1; ++i)
DAData[i] = (ushort)((FScale*i)/NumPoints);
// transfer the DAData to the DA buffer
ULStat = MccDaq.MccService.WinArrayToBuf( ref DAData[0], DAMemHandle, FirstPoint, NumPoints);
lblADData = (new Label[] {_lblADData_0, _lblADData_1, _lblADData_2, _lblADData_3,
_lblADData_4, _lblADData_5, _lblADData_6, _lblADData_7});
}
private int MemHandle = 0; // define a variable to contain the handle for
#endregion Fields
#region Constructors
public frmSendAData()
{
// This call is required by the Windows Form Designer.
InitializeComponent();
// Initiate error handling
// activating error handling will trap errors like
// bad channel numbers and non-configured conditions.
// Parameters:
// MccDaq.ErrorReporting.PrintAll :all warnings and errors encountered will be printed
// MccDaq.ErrorHandling.StopAll :if an error is encountered, the program will stop
MccDaq.ErrorInfo ULStat = MccDaq.MccService.ErrHandling(MccDaq.ErrorReporting.PrintAll, MccDaq.ErrorHandling.StopAll);
// Create a new MccBoard object for Board 0
DaqBoard = new MccDaq.MccBoard(0);
MemHandle = MccDaq.MccService.WinBufAlloc(NumPoints); // set aside memory to hold data
//generate waveform
ushort FScale =0;
DaqBoard.FromEngUnits(MccDaq.Range.Bip5Volts, 5.0f, out FScale);
for (int i=0; i<=NumPoints - 1; ++i)
DAData[i] = Convert.ToUInt16((i * FScale)/NumPoints);
//move waveform to buffer
FirstPoint = 0;
ULStat = MccDaq.MccService.WinArrayToBuf( ref DAData[0], MemHandle, FirstPoint, NumPoints);
lblAOutData = (new Label[]{_lblAOutData_0, _lblAOutData_1});
}
private void cmdStart_Click(object eventSender, System.EventArgs eventArgs)
{
string TrigSource;
MccDaq.ErrorInfo ULStat;
MccDaq.TriggerType TrigType;
float LSB, VoltageRange;
int FSCounts, Rate;
bool ValidChan;
cmdStart.Enabled = false;
// Select the trigger source using Mccdaq.MccBoard.SetTrigger()
// Parameters:
// TrigType :the type of triggering based on external trigger source
// LowThreshold :Low threshold when the trigger input is analog
// HighThreshold :High threshold when the trigger input is analog
float highVal = 1.53F;
float lowVal = 0.1F;
TrigType = MccDaq.TriggerType.TrigAbove;
TrigSource = "analog trigger input";
ushort HighThreshold = 0;
ushort LowThreshold = 0;
if (AIOProps.ATrigRes == 0)
{
ULStat = DaqBoard.FromEngUnits(Range, highVal, out HighThreshold);
ULStat = DaqBoard.FromEngUnits(Range, lowVal, out LowThreshold);
}
else
{
//Use the value acquired from the AnalogIO module, since the resolution
//of the input is different from the resolution of the trigger.
//Calculate trigger based on resolution returned and trigger range.
VoltageRange = AIOProps.ATrigRange;
if (AIOProps.ATrigRange == -1)
{
VoltageRange = AIOProps.GetRangeVolts(Range);
TrigSource = "first channel in scan";
}
FSCounts = (int)Math.Pow(2, AIOProps.ATrigRes);
LSB = VoltageRange / FSCounts;
LowThreshold = (ushort)((lowVal / LSB) + (FSCounts / 2));
HighThreshold = (ushort)((highVal / LSB) + (FSCounts / 2));
}
lblInstruction.Text = "Board " + DaqBoard.BoardNum.ToString() +
" collecting analog data on up to " + NumAIChans.ToString() +
" channels using AInScan with Range set to " + Range.ToString() + ".";
lblResult.Text = "Waiting for a trigger at " + TrigSource + ". " +
"Trigger criterea: signal rising above " + highVal.ToString("0.00") +
"V. (Ctl-Break to abort.)";
Application.DoEvents();
ULStat = DaqBoard.SetTrigger(TrigType, LowThreshold, HighThreshold);
if (ULStat.Value == MccDaq.ErrorInfo.ErrorCode.NoErrors)
{
// Collect the values with MccDaq.MccBoard.AInScan()
// Parameters:
// LowChan :the first channel of the scan
// HighChan :the last channel of the scan
// Count :the total number of A/D samples to collect
// Rate :sample rate
// Range :the range for the board
// MemHandle :Handle for Windows buffer to store data in
// Options :data collection options
ValidChan = int.TryParse(txtHighChan.Text, out HighChan);
if (ValidChan)
{
if ((HighChan > MaxChan))
{
HighChan = MaxChan;
}
txtHighChan.Text = HighChan.ToString();
}
int Count = NumPoints; // total number of data points to collect
// per channel sampling rate ((samples per second) per channel)
Rate = 1000 / ((HighChan - LowChan) + 1);
MccDaq.ScanOptions Options = MccDaq.ScanOptions.ConvertData // return data as 12-bit values
| MccDaq.ScanOptions.ExtTrigger;
ULStat = DaqBoard.AInScan(LowChan, HighChan, Count, ref Rate, Range, MemHandle, Options);
lblResult.Text = "";
if (ULStat.Value == ErrorInfo.ErrorCode.Interrupted)
{
lblInstruction.Text = "Scan interrupted while waiting " +
"for trigger on board " + DaqBoard.BoardNum.ToString() +
". Click Start to try again.";
cmdStart.Enabled = true;
return;
}
else if (!(ULStat.Value == ErrorInfo.ErrorCode.NoErrors))
{
lblInstruction.Text = "Error occurred on board " +
DaqBoard.BoardNum.ToString() +
": " + ULStat.Message;
cmdStart.Enabled = false;
return;
}
// Transfer the data from the memory buffer set up by Windows to an array
if (ADResolution > 16)
{
ULStat = MccDaq.MccService.WinBufToArray32(MemHandle, ADData32, FirstPoint, Count);
for (int i = 0; i <= HighChan; ++i)
{
lblADData[i].Text = ADData32[i].ToString("0");
}
}
else
{
ULStat = MccDaq.MccService.WinBufToArray(MemHandle, ADData, FirstPoint, Count);
for (int i = 0; i <= HighChan; ++i)
{
lblADData[i].Text = ADData[i].ToString("0");
}
}
for (int j = HighChan + 1; j <= 7; ++j)
{
lblADData[j].Text = "";
}
}
cmdStart.Enabled = true;
}