the goal of my project is to modify the ST lib to have composite HID and I would like to have some leads to know what I should modify, for example I know that I have to open an endpoint and also create an supplementary interface for the host but there are so many structures that interact with each other that I'm a bit lost. I half understand the overall structure of the usb but I lack knowledge how the lib sends the arrays of data and in what order to the host
