If you've never written a driver before, of course it's going to take weeks or months to get somewhere (speaking from experience, having written a few of my own

If you've never written a driver before, of course it's going to take weeks or months to get somewhere (speaking from experience, having written a few of my own as early tasks at a new job) However, once you understand the APIs presented by your OS, and/or the underlying standard you need to implement, that time will easily reduce to a few days (or hours, in this case). If I've just written a USB driver for one set of hardware, it's almost certainly going to be trivial to write a driver for some other hardware.