Now I am working around USB Audio Speaker Demo for Audio Class 2.0 driver with RT1021 in windows10 and android System. But I have some confusion.Firstly. I have tried to modify usb device descriptor to meet usb audio class 2.0. I successfully get enumeration In windows10 and android.I find there is no data transferred from host to device in Isochronous out endpoint and control interface can send valid control data. Is there something other needed to modify?
