Serial Device C# Driver

This is a generic C# device driver for RS232 serial device.

Packages and Software Requirements

• com0com (or similar program) to simulate RS232 devices (see picture below for configuration settings)
• System.IO.Ports Nuget package
• Microsoft Visual Studio 2019 Community Edition

Running the solution

1. Open the solution in Microsoft Visual Studio 2019 Community Edition
2. Run the DeviceSimulation project without debugging
   • Note: you can set this project to be the default startup project.
3. Once that is up and running, run the unit tests project (DriverTests) which will test the driver, which is in the RS232_Device_Driver project.

Simple device protocol

The DeviceSimulation project simulates a simple RS232 serial device.

The commands that are sent to the device are of format:

commandname <parameter 1> <value 1> <parameter 2> <value 2> ...<CR>

The response to a valid command has the following format:

<CR><LF>ok [<paramter 1> <value 1> [<paramter 2> <value 2> ...]]<CR><LF>

The response to an invalid command could be one of the following:

<CR><LF>err "Invalid Value"<CR><LF>
<CR><LF>err "Invalid Parameter"<CR><LF>
<CR><LF>err "Missing Parameter"<CR><LF>
<CR><LF>err<CR><LF>

Resources Used

The resources I used include:

• com0com
• System.IO.Ports namespace
• C# SerialPort Class