public void DelegatesSampleRateToController()
{
var c = new NIDAQController();
var s = new NIDAQInputStream("none", 0, c);
var srate = new Measurement(1000, "Hz");
c.SampleRate = srate;
Assert.That(s.SampleRate, Is.EqualTo(c.SampleRate));
Assert.Throws<NotSupportedException>(() => s.SampleRate = srate);
}
private double ReadSingleAnalog(NIDAQInputStream stream)
{
using (var t = new DAQTask())
{
t.AIChannels.CreateVoltageChannel(stream.PhysicalName, "", (AITerminalConfiguration) (-1),
Device.AIVoltageRanges.Min(), Device.AIVoltageRanges.Max(),
AIVoltageUnits.Volts);
var reader = new AnalogSingleChannelReader(t.Stream);
return reader.ReadSingleSample();
}
}
private double ReadSingleDigital(NIDAQInputStream stream)
{
using (var t = new DAQTask())
{
t.DIChannels.CreateChannel(stream.PhysicalName, "", ChannelLineGrouping.OneChannelForAllLines);
var reader = new DigitalSingleChannelReader(t.Stream);
return reader.ReadSingleSamplePortUInt32();
}
}
public IInputData ReadStream(NIDAQInputStream stream)
{
double quantity;
if (stream.PhysicalChannelType == PhysicalChannelTypes.AI)
quantity = ReadSingleAnalog(stream);
else if (stream.PhysicalChannelType == PhysicalChannelTypes.DIPort)
quantity = ReadSingleDigital(stream);
else
throw new NotSupportedException("Unsupported stream channel type");
var inData =
new InputData(
new List<IMeasurement> {new Measurement(quantity, 0, stream.DAQUnits)},
new Measurement(0, 0, "Hz"),
DateTimeOffset.Now)
.DataWithStreamConfiguration(stream, stream.Configuration);
return inData.DataWithUnits(stream.MeasurementConversionTarget);
}
