Measurement-computing DAQFlex User Guide Manual do Utilizador descarregar pdf (Página 21)

DAQFlex Software User's Guide Using DAQFlex Software

The following are examples of reading scan data using a callback method:

try

{

double[,] scanData;

string[] names = DaqDeviceManager.GetDeviceNames(DeviceNameFormat.NameAndSerno);

DaqDevice device = DaqDeviceManager.CreateDevice(names[0]);

device.EnableCallback(OnReadScanData, CallbackType.OnDataAvailable, 1000);

device.EnableCallback(OnReadScanData, CallbackType.OnScanComplete, null);

device.SendMessage("AISCAN:LOWCHAN=0");

device.SendMessage("AISCAN:HIGHCHAN=0");

device.SendMessage("AISCAN:RATE=1000");

device.SendMessage("AISCAN:SAMPLES=5000");

device.SendMessage("AISCAN:START");

}

catch (Exception ex)

{

Console.WriteLine(ex.Message);

}

protected void OnReadScanData(ErrorCodes errorCode, CallbackType callbackType,

object callbackData)

{

try

{

int availableSamples = (int)callbackData;

double[,] scanData = device.ReadScanData(availableSamples, 0);

}

catch (Exception ex)

{

Console.WriteLine(ex.Message);

}

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Measurement-computing DAQFlex User Guide Manual do Utilizador Página 21