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I have a device which sends data by com port on my computer.
I know how to simulate it, but the controller must be plugged in to simulate sending data (using Proteus)
Is it possible to simulate the com port sending data without having any external device plugged in?
For example: I want to write a C# program which opens the com port and waits for data, and another c# program which writes data on the same port.
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Download Virtual Serial Port Driver on your Windows machine. Install the application on your system and launch it. Choose “Pair” in the application's main window. Click the “Add a new pair” button to create a pair of virtual serial ports.
A software-based virtual serial port presents one or more virtual serial port identifiers on a PC which other applications can see and interact with as if they were real hardware ports, but the data sent and received to these virtual devices is handled by software that manipulates the transmitted and received data to ...
The simulation of a serial port in software in order to allow USB, Ethernet or some other input/output port to take its place. Virtual serial ports are necessary to enable an application that was written for the serial port to run on a computer that does not have that interface. See serial port.
The best way to do this is to use a software COM port emulator. I use com0com :
Null-modem emulator
This provides virtual NM COM port pairs on the system (ie: what is output to one is input to the other and vice-versa). The devices show up in Device Manager just like a real COM port so you interact with them in C# as though they were real hardware devices.
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For simplicity's sake, get yourself a com port or null modem emulator. You'll get very far off track, and maybe waste a lot of time, trying to do this yourself.
See this post, too: Faking an RS232 Serial Port
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