0

I need to write a Modem emulation, and so I need to set the DCD "pin" inside my C# .NET application. The SerialPort Class does only have a method for CDHolding, which reads the DCD state.

Does anyone know, if there is any possibility to also set the DCD State?

Thanks

Improve this question

1 Answer 1

Reset to default
0

DCD (or CD) is only an input/status notification/reading function on the PC (terminal) side, and cannot be set or changed from application programs or device drivers.

Understanding RS232 Serial Port Communication

SerialPort.CDHolding Property
SerialPort.PinChanged Event
SerialPinChange Enum

If you want to create modem emulation, you will need to define, implement and use your own interfaces and functions rather than using .NET or the Win32 API.

Improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.