STM32F405 USB Communication with PC Application (.NET C#)

[Sandeep Dhokne]

Posted on January 08, 2018 at 08:05

Hello,

I did USB VCP CDC FS code in STM32F405.

I works fine.i tested it with terminal software.

Now i want to test same with .NET C♯ application software (with USB protocol only).

But unfortunately USB is not detected in .net c♯ application. 

Anybody have some example code for same?@

OR 

Any solution for same so i can proceed with my target.

Thank you.

Turvey.Clive.002

null

[Ben K]

Posted on January 08, 2018 at 10:31

If you are using the CDC class with Windows, the USB interface is bound to the USB serial driver by default. This means that you can only interact with it as a Serial COM Port, in .NET you have the System.IO.Ports.SerialPort class for that. If you are trying to access this interface with a native USB application (such as LibUsbDotNet), you have to uninstall the serial driver from the USB interface, and set the WinUSB driver for it.

[Sandeep Dhokne]

Posted on January 08, 2018 at 11:26

Thank you.

I did this i uninstalled serial drivers and installed WinUSB Drivers but problem still persist.

Apart from WinUSB drivers what extra should i need for my C#.Net Application programming?

Basically i want STM32F405 to PC base Application software(Developed in C#.Net)communication. 

[Ben K]

Posted on January 08, 2018 at 12:03

If you can observe the WinUSB interface in Device Manager then the problem is most likely in your application. It's hard to say anything without any code attached - and this is not the proper forum for .NET USB application development - but I would consider trying all alternative ways of detecting the device, e.g. VID-PID based discovery.

[Tesla DeLorean]

Posted on January 08, 2018 at 16:24

In C we use CreateFile() to open a COM port, ie 'COM8' or '\\.\COM10'