usbport host is an open source, highly portable USB-Stack
for memory- and cpu-constrained embedded systems written
by Benedikt Sauter in his thesis at FH Augsburg University
for Applied Science.

usbport host is designed for embedded systems with small amounts of
memory. A typical USBene configuration is 200 kilobytes of RAM and 
4 kilobytes of Code-Memory. USBene consists provides
own layers for the different USB parts. Drivers can be load
dynamically and unloaded at runtime.

usbport host runs on a variety of platform ranging from embedded
microcontrollers such as ARM7/9 derivates and the AVR to old
homecomputers. Code footprint is on the order of kilobytes and memory
usage can be configured to be as low as tens of bytes.

usbport host is written in the C programming language and is freely
available as open source under a BSD-style license. More information
about USBene can be found at the usbport host home page:
http://www.usb-projects.de/opus

Directory:

arch	      Beispielimplementierungen für verschiedene Mikrocontroller 
boards	      Schaltplan, Platinenlayout, etc. für die Testplatine
core	      USB-Kern-Funktionen
doc	      Diplomarbeit als Beschreibung 
drivers	      USB-Treiber (Geräte und Klassen) 
host	      Host-Controller-Treiber 
lib	      Zusatzfunktionen, Typendefinitionen, etc. 
uclibusb      USB-Bibliotheken für USB-Geräte 
usbspec	      Datentypen und -formate der USB-Spezifikation