using usb gadget with wheezy 7.2

I’m looking for good directions for installing usb gadget tty for BBB under wheezy 7.2. I was following http://github.jfet.org/BBKNotes1.html

but it did not work.

Thanks

http://eewiki.net/display/linuxonarm/BeagleBone+Black#BeagleBoneBlack-usbgadget%28httpaccesstobeagleboneblackoverusb%29