private void cmdStartBgnd_Click(object eventSender, System.EventArgs eventArgs)
{
int CurIndex;
int CurCount;
short Status;
MccDaq.ErrorInfo ULStat;
MccDaq.ScanOptions Options;
int Rate;
int Count;
bool ValidChan;
cmdStartBgnd.Enabled = false;
cmdStartBgnd.Visible = false;
cmdStopConvert.Enabled = true;
cmdStopConvert.Visible = true;
cmdQuit.Enabled = false;
// Collect the values by calling 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();
}
Count = NumPoints; // total number of data points to collect
// per channel sampling rate ((samples per second) per channel)
Rate = 1000 / ((HighChan - LowChan) + 1);
Options = MccDaq.ScanOptions.Background
| MccDaq.ScanOptions.Continuous;
// collect data in background continuously
ULStat = DaqBoard.AInScan(LowChan, HighChan, Count, ref Rate, Range, MemHandle, Options);
ULStat = DaqBoard.GetStatus(out Status, out CurCount, out CurIndex, MccDaq.FunctionType.AiFunction);
if (Status == MccDaq.MccBoard.Running)
{
lblShowStat.Text = "Running";
lblShowCount.Text = CurCount.ToString("D");
lblShowIndex.Text = CurIndex.ToString("D");
}
tmrCheckStatus.Enabled = true;
}
private void tmrConvert_Tick(object eventSender, System.EventArgs eventArgs) /* Handles tmrConvert.Tick */
{
tmrConvert.Stop();
// Collect the values by calling MccDaq.MccBoard.AInScan function
// 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 = 100; // sampling rate is ignored
MccDaq.Range Range = MccDaq.Range.Bip5Volts; // set the range
MccDaq.ScanOptions Options = MccDaq.ScanOptions.ConvertData
| MccDaq.ScanOptions.ExtClock;
MccDaq.ErrorInfo ULStat = DaqBoard.AInScan(LowChan, HighChan, Count, ref Rate, Range, MemHandle, Options);
// Transfer the data from the memory buffer set up by Windows to an array
if (HighResAD)
{
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 = ("");
}
tmrConvert.Start();
}
private void tmrConvert_Tick(object eventSender, System.EventArgs eventArgs) /* Handles tmrConvert.Tick */
{
tmrConvert.Stop();
// 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 (determined by
// Set Mode option buttons in this program)
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 = 290; // per channel sampling rate ((samples per second) per channel)
MccDaq.Range Range = MccDaq.Range.Bip5Volts; // set the range
MccDaq.ErrorInfo ULStat = DaqBoard.AInScan(LowChan, HighChan, Count, ref Rate, Range, MemHandle, Options);
if (ULStat.Value == MccDaq.ErrorInfo.ErrorCode.FreeRunning)
{ // Turn off library error handling for subsequent calls
ULStat = MccDaq.MccService.ErrHandling(MccDaq.ErrorReporting.DontPrint, MccDaq.ErrorHandling.StopAll);
}
// Transfer the data from the memory buffer set up by Windows to an array
if (HighResAD)
{
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");
}
}
tmrConvert.Start();
}
public double[] ReadDyno()
{
//establish all the varables for the data
double[] reading = new double[7];
double XForce, YForce, ZForceDyno, TForce, VAngle, XYForce, XYForceAverage;
//sampleing from all 8 channels, DAQ has a max sampling rate of 10,000Hz so for sampleing 8 channels the rate=10,000/8=1,250
int LowChan = 0, HighChan = 7, Rate = 1250, Count = 8;//JNEW
//IntPtr MemHandle = IntPtr.Zero;//JNEW //dont think this is needed here
int NumPoints = 8; // Number of data points to collect //JNEW
int FirstPoint = 0; // set first element in buffer to transfer to array //JNEW
short[] ADData = new short[NumPoints]; //JNEW
IntPtr MemHandle = MccDaq.MccService.ScaledWinBufAllocEx(NumPoints); //JNEW
// return scaled data (dont know exactly what this means)
Options = MccDaq.ScanOptions.ConvertData | MccDaq.ScanOptions.SingleIo;
//Options = MccDaq.ScanOptions.ScaleData;
//Range = MccDaq.Range.Bip5Volts; // set the range
//Range = MccDaq.Range.Bip10Volts; // set the range
ULStat = DaqBoard.AInScan(LowChan, HighChan, Count, ref Rate, Range, MemHandle, Options);
if (ULStat.Value == MccDaq.ErrorInfo.ErrorCode.BadRange)
{
Console.WriteLine("Change the Range argument to one supported by this board.");
}
// Transfer the data from the memory buffer set up by Windows to an array
ULStat = MccDaq.MccService.WinBufToArray(MemHandle, ADData, FirstPoint, Count);
//calibration variables (probably from kistler)
//Copy into local variables
XForce = 487.33 * Count2Volt(ADData[0]);
YForce = 479.85 * Count2Volt(ADData[1]);
ZForceDyno = 2032.52 * Count2Volt(ADData[2]);
TForce = 18.91 * Count2Volt(ADData[3]);
VAngle = Count2Volt(ADData[7]);
XYForce = Math.Sqrt(XForce * XForce + YForce * YForce);
XYForceAverage = averager.calculateAverage(XYForce);
reading[0] = XForce;
reading[1] = YForce;
reading[2] = ZForceDyno;
reading[3] = TForce;
reading[4] = VAngle;
reading[5] = XYForce;
reading[6] = XYForceAverage;
return(reading);
}
private void cmdStart_Click(object sender, System.EventArgs e)
{
//Start input scan with MccBoard.AInScan
int rate = DesiredRate;
MccDaq.ErrorInfo ULStat = DaqBoard.AInScan(0, 0,
TotalCount, ref rate, Range, MemHandle, Options);
if (ULStat.Value == MccDaq.ErrorInfo.ErrorCode.NoErrors)
{
cmdStart.Enabled = false;
lblStatus.Text = "RUNNING";
}
}
private void cmdStartConvert_Click(object eventSender, System.EventArgs eventArgs)
{
MccDaq.ErrorInfo ULStat;
MccDaq.ScanOptions Options;
int Rate;
int Count;
bool ValidChan;
cmdStartConvert.Enabled = false;
cmdQuit.Enabled = false;
cmdStopBackground.Enabled = true;
// Collect the values by calling MccDaq.MccBoard.AInScan function in background mode
// 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 in samples per second
// 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();
}
else
{
HighChan = 0;
}
Count = NumPoints; // total number of data points to collect
// per channel sampling rate ((samples per second) per channel)
Rate = 1000 / ((HighChan - LowChan) + 1);
Options = MccDaq.ScanOptions.Background; // collect data in BACKGROUND mode
// as 16-bit values (no conversion)
ULStat = DaqBoard.AInScan(LowChan, HighChan, Count, ref Rate, Range, MemHandle, Options);
// during the background operation, check the status using a timer, then print the values
tmrCheckStatus.Enabled = true;
}
private void cmdStartAcq_Click(object eventSender, System.EventArgs eventArgs) /* Handles cmdStartAcq.Click */
{
MccDaq.ErrorInfo ULStat;
MccDaq.Range Range;
MccDaq.ScanOptions Options;
int Rate;
int Count;
int LowChan;
short i;
foreach (Label l in lblShowTag)
{
l.Text = "";
}
// Collect the values by calling MccDaq.MccBoard.AInScan function
// 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
LowChan = 0; // first channel to acquire
HighChan = int.Parse(txtHighChan.Text); // last channel to acquire
if (HighChan > 7)
{
HighChan = 7;
}
txtHighChan.Text = HighChan.ToString();
Count = NumPoints; // total number of data points to collect
Rate = 390; // per channel sampling rate ((samples per second) per channel)
Options = MccDaq.ScanOptions.Background; // collect data in background mode
// as 16-bit values (no conversion)
Range = MccDaq.Range.Bip5Volts; // set the range
ULStat = DaqBoard.AInScan(LowChan, HighChan, Count, ref Rate, Range, MemHandle, Options);
tmrCheckStatus.Enabled = true;
}
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;
}
private void cmdStart_Click(object eventSender, System.EventArgs eventArgs)
{
int j;
int i;
MccDaq.ErrorInfo ULStat;
MccDaq.Range Range;
MccDaq.ScanOptions Options;
int Rate;
int Count;
int LowChan;
cmdStart.Enabled = false;
// Collect the values by calling MccDaq.MccBoard.AInScan function
// 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
LowChan = 0; // first channel to acquire
HighChan = int.Parse(txtHighChan.Text); // last channel to acquire
if ((HighChan > 7))
{
HighChan = 7;
}
txtHighChan.Text = HighChan.ToString();
Count = NumPoints; // total number of data points to collect
Rate = 390; // per channel sampling rate ((samples per second) per channel)
// return scaled data
Options = MccDaq.ScanOptions.ScaleData;
Range = MccDaq.Range.Bip5Volts; // set the range
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.ScaledWinBufToArray(MemHandle, ADData, FirstPoint, Count);
for (i = 0; i <= HighChan; ++i)
{
lblADData[i].Text = ADData[i].ToString("F8");
}
for (j = HighChan + 1; j <= 7; ++j)
{
lblADData[j].Text = "0";
}
cmdStart.Enabled = true;
}
private void cmdStart_Click(object eventSender, System.EventArgs eventArgs)
{
int j;
int i;
MccDaq.ErrorInfo ULStat;
MccDaq.ScanOptions Options;
int Rate;
int Count;
bool ValidChan;
cmdStart.Enabled = false;
// Collect the values by calling MccDaq.MccBoard.AInScan function
// 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();
}
else
{
HighChan = 0;
}
Count = NumPoints; // total number of data points to collect
// per channel sampling rate ((samples per second) per channel)
Rate = 1000 / ((HighChan - LowChan) + 1);
// return data as 12-bit values (ignored for 16-bit boards)
Options = MccDaq.ScanOptions.ConvertData;
ULStat = DaqBoard.AInScan(LowChan, HighChan, Count, ref Rate, Range, MemHandle, Options);
// 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 (i = 0; i <= HighChan; ++i)
{
lblADData[i].Text = ADData32[i].ToString("D");
}
}
else
{
ULStat = MccDaq.MccService.WinBufToArray(MemHandle, ADData, FirstPoint, Count);
for (i = 0; i <= HighChan; ++i)
{
lblADData[i].Text = ADData[i].ToString("D");
}
}
for (j = HighChan + 1; j <= 7; ++j)
{
lblADData[j].Text = "";
}
cmdStart.Enabled = true;
}
private void cmdStart_Click(object eventSender, System.EventArgs eventArgs)
{
int i;
MccDaq.ErrorInfo ULStat;
MccDaq.Range Range;
MccDaq.ScanOptions Options;
int Rate;
int Count;
int Chan;
StrainConfig StrainConfiguration = StrainConfig.QuarterBridgeI;
double InitialVoltage = 0.0; //Bridge output voltage in the unloaded condition. This value is subtracted from any measurements before scaling equations are applied.
double VInitial = 0.0;
double OffsetAdjustmentFactor = 0.0;
double GainAdjustmentFactor = 0.0;
double Total = 0.0;
double VOffset = 0.0;
double RShunt = 100000; // Resistance of Shunt Resistor
double RGage = 350; // Gage Resistance
double VExcitation = 2.5; // Excitation voltage
double GageFactor = 2;
double PoissonRatio = 0;
double VActualBridge; // Actual bridge voltage
double REffective; // Effective resistance
double VSimulatedBridge; // Simulated bridge voltage
double MeasuredStrain;
double SimulatedStrain;
cmdStart.Enabled = false;
// Calculate the offset adjusment factor on a resting gage in software
// Collect the values by calling MccDaq.MccBoard.AInScan function
// 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
Chan = int.Parse(txtChan.Text); // channel to acquire
if ((Chan > 3))
{
Chan = 3;
}
txtChan.Text = Chan.ToString();
VInitial = InitialVoltage / VExcitation;
Count = NumPoints; // total number of data points to collect
Rate = 1000; // per channel sampling rate ((samples per second) per channel)
// return scaled data
Options = MccDaq.ScanOptions.ScaleData;
Range = MccDaq.Range.NotUsed; // set the range
ULStat = DaqBoard.AInScan(Chan, Chan, Count, ref Rate, Range, MemHandle, Options);
// Transfer the data from the memory buffer set up by Windows to an array
ULStat = MccDaq.MccService.ScaledWinBufToArray(MemHandle, ADData, FirstPoint, Count);
for (i = 0; i < NumPoints; i++)
{
Total = Total + ADData [i];
}
VOffset = Total / Count;
VOffset = VOffset - VInitial;
OffsetAdjustmentFactor = CalculateStrain(StrainConfiguration, VOffset, GageFactor, PoissonRatio);
lblOffsetMeasStrain.Text = OffsetAdjustmentFactor.ToString("F9");
// Enable Shunt Calibration Circuit and Collect the values and
// Calculate the Actual Bridge Voltage
Options = MccDaq.ScanOptions.ScaleData | MccDaq.ScanOptions.ShuntCal;
ULStat = DaqBoard.AInScan(Chan, Chan, Count, ref Rate, Range, MemHandle, Options);
// Transfer the data from the memory buffer set up by Windows to an array
ULStat = MccDaq.MccService.ScaledWinBufToArray(MemHandle, ADData, FirstPoint, Count);
Total = 0.0;
for (i = 0; i < Count; i++)
{
Total = Total + ADData [i];
}
VActualBridge = Total / Count;
VActualBridge = VActualBridge - VInitial;
MeasuredStrain = CalculateStrain(StrainConfiguration, VActualBridge, GageFactor, PoissonRatio);
lblGainMeasStrain.Text = MeasuredStrain.ToString("F9");
// Calculate the Simulated Bridge Strain with a shunt resistor
REffective = (RGage * RShunt) / (RGage + RShunt);
VSimulatedBridge = (REffective / (REffective + RGage) - 0.5);
SimulatedStrain = CalculateStrain(StrainConfiguration, VSimulatedBridge, GageFactor, PoissonRatio);
lblGainSimStrain.Text = SimulatedStrain.ToString("F9");
GainAdjustmentFactor = SimulatedStrain / (MeasuredStrain - OffsetAdjustmentFactor);
lblGainAdjustmentFactor.Text = GainAdjustmentFactor.ToString("F9");
cmdStart.Enabled = true;
}
static void Main(string[] args)
{
System.ConsoleKeyInfo cki = new System.ConsoleKeyInfo();
MccDaq.ErrorInfo RetVal;
int BoardNum = 0;
int DeviceChannels = 0;
int Rate = FREQ;
bool ReadLower = true;
BoardNum = GetBoardNum(DEVICE);
if (BoardNum == -1)
{
Console.WriteLine("No USB-{0} detected!", DEVICE);
cki = Console.ReadKey();
}
else
{
MccBoard daq = new MccDaq.MccBoard(BoardNum);
daq.BoardConfig.GetNumAdChans(out DeviceChannels);
if (DeviceChannels > 8)
{
Console.WriteLine("Single-Ended Channels");
}
else
{
Console.WriteLine("Differentially-Ended Channels");
}
IntPtr buffer = MccService.ScaledWinBufAllocEx(BUFFERSIZE);
if (buffer == IntPtr.Zero)
{
Console.WriteLine("Bad Handle");
return;
}
short[] chArray = new short[CHANCOUNT]; //configuration array for channel numbers
Range[] chRange = new Range[CHANCOUNT]; //configuration array for input ranges
chArray[0] = 0;
chArray[1] = 1;
chArray[2] = 2;
chArray[3] = 3;
chRange[0] = Range.Bip10Volts;
chRange[1] = Range.Bip10Volts;
chRange[2] = Range.Bip10Volts;
chRange[3] = Range.Bip10Volts;
RetVal = daq.ALoadQueue(chArray, chRange, CHANCOUNT);
IsError(RetVal);
//setup the acquisiton
RetVal = daq.AInScan(FIRSTCHANNEL,
LASTCHANNEL,
BUFFERSIZE,
ref Rate,
Range.Bip10Volts,
buffer,
ScanOptions.Background | ScanOptions.ScaleData | ScanOptions.Continuous
);
IsError(RetVal);
fStream = new StreamWriter(@"C:\Users\Public\Documents\DataFile1608G.asc");
CreateFileHeaders(chArray); //writes basic info to the beginning of the file
int Count = 0;
int Index = 0;
short daqStatus;
double[] theArray = new double[BUFFERSIZE];
//Loop until key press
do
{
RetVal = daq.GetStatus(out daqStatus, out Count, out Index, FunctionType.AiFunction);
if ((Index >= HALFBUFFSIZE) & ReadLower) //check for 50% more data
{
//get lower half of buffer - ScaledWinBufToArray returns engineering units
RetVal = MccService.ScaledWinBufToArray(buffer, theArray, 0, HALFBUFFSIZE);
IsError(RetVal);
DisplayData(theArray, HALFBUFFSIZE / CHANCOUNT);
ReadLower = false; //flag that controls the next read
}
else if ((Index < HALFBUFFSIZE) & !ReadLower)
{
//get the upper half - ScaledWinBufToArray returns engineering units
RetVal = MccService.ScaledWinBufToArray(buffer, theArray, HALFBUFFSIZE, HALFBUFFSIZE);
IsError(RetVal);
DisplayData(theArray, HALFBUFFSIZE / CHANCOUNT);
ReadLower = true;//flag that controls the next read
}
} while (!Console.KeyAvailable);
cki = Console.ReadKey();
//flush any buffered data out to disk
fStream.Close();
//stop the acquisition
RetVal = daq.StopBackground(FunctionType.AiFunction);
//free up memory
MccService.WinBufFreeEx(buffer);
WaitForKey();
}
}
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;
}
private void cmdStartBgnd_Click(object eventSender, System.EventArgs eventArgs) /* Handles cmdStartBgnd.Click */
{
int CurIndex;
int CurCount;
short Status;
MccDaq.ErrorInfo ULStat;
MccDaq.Range Range;
MccDaq.ScanOptions Options;
int Rate;
int Count;
int LowChan;
cmdStartBgnd.Enabled = false;
cmdStartBgnd.Visible = false;
cmdStopConvert.Enabled = true;
cmdStopConvert.Visible = true;
cmdQuit.Enabled = false;
UserTerm = 0; // initialize user terminate flag
// Collect the values by calling MccDaq.MccBoard.AInScan function
// 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
LowChan = 0; // first channel to acquire
HighChan = int.Parse(txtHighChan.Text); // last channel to acquire
if ((HighChan > 7))
{
HighChan = 7;
}
txtHighChan.Text = HighChan.ToString();
Count = NumPoints; // total number of data points to collect
Rate = 390; // per channel sampling rate ((samples per second) per channel)
Options = MccDaq.ScanOptions.ConvertData | MccDaq.ScanOptions.Background | MccDaq.ScanOptions.SingleIo;
Range = MccDaq.Range.Bip5Volts; // set the range
ULStat = DaqBoard.AInScan(LowChan, HighChan, Count, ref Rate, Range, MemHandle, Options);
ULStat = DaqBoard.GetStatus(out Status, out CurCount, out CurIndex, MccDaq.FunctionType.AiFunction);
if (Status == MccDaq.MccBoard.Running)
{
lblShowStat.Text = "Running";
lblShowCount.Text = CurCount.ToString("D");
lblShowIndex.Text = CurIndex.ToString("D");
}
tmrCheckStatus.Enabled = true;
}
