MccDaq.CounterRegister RegName = MccDaq.CounterRegister.LoadReg1; // register name of counter 1
public frmCountTest()
{
// 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);
// Configure the counter for desired operation
// Parameters:
// CounterNum :the counter to be setup
// Config :the operation mode of counter to be configured
MccDaq.C8254Mode Config = MccDaq.C8254Mode.HighOnLastCount;
ULStat = DaqBoard.C8254Config(CounterNum, Config);
// Send a starting value to the counter with MccDaq.MccBoard.CLoad()
// Parameters:
// RegName :the register for loading the counter with the starting value
// LoadValue :the starting value to place in the counter
int LoadValue = 1000;
ULStat = DaqBoard.CLoad(RegName, LoadValue);
lblCountLoaded.Text = "Counter starting value loaded:";
lblShowLoadVal.Text = LoadValue.ToString("0");
}
private void frmCountTest_Load(object sender, EventArgs e)
{
InitUL();
NumCtrs = CtrProps.FindCountersOfType(DaqBoard, CounterType, out CounterNum);
if (NumCtrs == 0)
{
lblNoteFreqIn.Text = "Board " + DaqBoard.BoardNum.ToString() +
" has no 8254 counters.";
}
else
{
// Configure the counter for desired operation
// Parameters:
// CounterNum :the counter to be setup
// Config :the operation mode of counter to be configured
MccDaq.C8254Mode Config = MccDaq.C8254Mode.HighOnLastCount;
MccDaq.ErrorInfo ULStat = DaqBoard.C8254Config(CounterNum, Config);
// Send a starting value to the counter with MccDaq.MccBoard.CLoad()
// Parameters:
// RegName :the register for loading the counter with the starting value
// LoadValue :the starting value to place in the counter
int LoadValue = 1000;
RegName = (CounterRegister)Enum.Parse(typeof(CounterRegister), CounterNum.ToString());
ULStat = DaqBoard.CLoad(RegName, LoadValue);
lblNoteFreqIn.Text =
"NOTE: There must be a TTL frequency at the counter " +
CounterNum.ToString() + " input on board " +
DaqBoard.BoardNum.ToString() + ".";
this.lblCountRead.Text = "Value read from counter " + CounterNum.ToString() + ":";
lblCountLoaded.Text = "Counter starting value loaded:";
lblShowLoadVal.Text = LoadValue.ToString("0");
tmrReadCount.Enabled = true;
}
}
