public override IObservable <short> Process <TSource>(IObservable <TSource> source)
{
return(Observable.Defer(() =>
{
ErrorInfo configError;
var portType = PortType;
var bitNumber = BitNumber;
var board = new MccBoard(BoardNumber);
if (bitNumber.HasValue)
{
configError = board.DConfigBit(portType, bitNumber.Value, DigitalPortDirection.DigitalIn);
}
else
{
configError = board.DConfigPort(portType, DigitalPortDirection.DigitalIn);
}
ThrowExceptionForErrorInfo(configError);
if (bitNumber.HasValue)
{
return source.Select(input =>
{
var error = board.DBitIn(portType, bitNumber.Value, out DigitalLogicState bitValue);
ThrowExceptionForErrorInfo(error);
return (short)bitValue;
});
}
else
{
return source.Select(input =>
{
var error = board.DIn(portType, out short dataValue);
ThrowExceptionForErrorInfo(error);
return dataValue;
});
}
}));
}
