Hello,
Yes, now I use python(pyusb) in host PC to communicate with m52259, and I already have my own device driver in Windows.
But it seems that there is no gerneral usb class function in m52259 or supported usb class for my application.
BTW, I have done this work in m52259 with CMXUSB, but now I want to redo this work with MQX3.4.