private void cmdStartBgnd_Click(System.Object eventSender, System.EventArgs eventArgs)
{
int CurIndex;
int CurCount;
short Status;
MccDaq.ErrorInfo ULStat;
int CBRate;
object Options;
int CBCount;
int PretrigCount;
MccDaq.TriggerSource TrigSource;
MccDaq.TriggerSensitivity TrigSense;
int TrigChan;
MccDaq.ChannelType ChanType;
MccDaq.Range Gain;
float Variance;
float Level;
MccDaq.TriggerEvent TrigEvent;
int Direction;
int PortNum;
cmdStartBgnd.Enabled = false;
cmdStartBgnd.Visible = false;
cmdStopConvert.Enabled = true;
cmdStopConvert.Visible = true;
cmdQuit.Enabled = false;
UserTerm = 0; // initialize user terminate flag
lblADData[0].Text = "";
lblADData[1].Text = "";
lblADData[2].Text = "";
//configure FirstPortA for digital input
PortNum = ChanArray[1];
Direction = System.Convert.ToInt32(MccDaq.DigitalPortDirection.DigitalIn);
ULStat = DaqBoard.DConfigPort((MccDaq.DigitalPortType)PortNum, (MccDaq.DigitalPortDirection)Direction);
//Set Triggers
//Parameters:
//BoardNum :the number used by CB.CFG to describe this board
//TrigSource :trigger source
//TrigSense :trigger sensitivity
//TrigChan :trigger channel
//ChanType :trigger channel type
//Gain :trigger channel gain
//Level :trigger Level
//Variance :trigger Variance
//TrigEvent :trigger event type
//Start trigger settings
// AD conversions are enabled when analog channel 0 makes a transition from below 2 V to above.*/
TrigSource = MccDaq.TriggerSource.TrigAnalogSW;
TrigSense = MccDaq.TriggerSensitivity.RisingEdge;
TrigChan = ChanArray[0];
ChanType = ChanTypeArray[0];
Gain = GainArray[0];
Level = 2;
Variance = 0;
TrigEvent = MccDaq.TriggerEvent.Start;
//Set start trigger
ULStat = DaqBoard.DaqSetTrigger(TrigSource, TrigSense, TrigChan, ChanType, Gain, Level, Variance, TrigEvent);
//Stop trigger settings
// AD conversions are terminated when counter 0 reaches 100 counts.*/
TrigSource = MccDaq.TriggerSource.TrigCounter;
TrigSense = MccDaq.TriggerSensitivity.AboveLevel;
TrigChan = ChanArray[2];
ChanType = ChanTypeArray[2];
Gain = GainArray[2];
Level = 100;
Variance = 0;
TrigEvent = MccDaq.TriggerEvent.Stop;
//Set stop trigger
ULStat = DaqBoard.DaqSetTrigger(TrigSource, TrigSense, TrigChan, ChanType, Gain, Level, Variance, TrigEvent);
// Collect the values with cbDaqInScan()
// Parameters:
// BoardNum :the number used by CB.CFG to describe this board
// ChanArray[] :array of channel values
// ChanTypeArray[] : array of channel types
// GainArra[] :array of gain values
// ChansCount :the number of elements in the arrays (0=disable queue)
// PretrigCount :number of pre-trigger A/D samples to collect
// CBCount :the total number of A/D samples to collect
// CBRate :sample rate in samples per second
// ADData[] :the array for the collected data values
// Options :data collection options
PretrigCount = 0;
CBCount = NumElements; // Number of data points to collect
Options = MccDaq.ScanOptions.ConvertData | MccDaq.ScanOptions.Background | MccDaq.ScanOptions.Continuous | MccDaq.ScanOptions.ExtTrigger;
CBRate = 100; // Acquire data at 100 Hz
ULStat = DaqBoard.DaqInScan(ChanArray, ChanTypeArray, GainArray, ChanCount, ref CBRate, ref PretrigCount, ref CBCount, MemHandle, (MccDaq.ScanOptions)Options);
ULStat = DaqBoard.GetStatus(out Status, out CurCount, out CurIndex, MccDaq.FunctionType.DaqiFunction);
if (Status == MccDaq.MccBoard.Running)
{
lblShowStartTrig.Text = "Waiting for trigger...";
lblShowStopTrig.Text = "";
lblShowStat.Text = "Running";
lblShowCount.Text = CurCount.ToString("D");
lblShowIndex.Text = CurIndex.ToString("D");
}
tmrCheckStatus.Enabled = true;
}
