How can I achieve a USB communication between a WPF application and an evaluation board?

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C#

WPF

USB

I am working on a project with my partner, and I have the part of the desktop application. I am creating a WPF Application, which will send data(values of the outputs of the board) to a board through a USB cable. We are using the STM32F407VG. I have already designed the UI of the app. So, now, I want to achieve the communication between the app and the board. At first, I want to send just a simple on/off data to a led on the board, just by clicking a button.

My device need to be a HID device. Moreover, how can find functions from a library which will send data to the board pins? For example, to light up a LED or to produce an analog, digital or PWM output.

What I have tried:

I've tried to add as reference in my project a usblibrary but I couldn't manage to communicate with my board. I don't know where to start from. Is there any tutorial, or something I should read about? What options do I have to follow? Using a library? How to get started with this? I would appreciate anything that could help me.

Thanks in advance!