3b-libusb1 - (incomplete) Common Lisp/CFFI bindings for libusb 1.0
So far, only implemented enough to download files from my camera, so expect lots of missing features. Low-level bindings will probably be replaced by autogenerated bindings at some point, and high-level API will probably change as well if it ever gets used more.
see https://github.com/3b/lytro-dl/blob/master/protocol-usb.lisp for example usage