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+This is the Readme file for the libs-device directory. This directory contains
+code snippets which may be useful for USB device firmware.
+
+
+WHAT IS INCLUDED IN THIS DIRECTORY?
+===================================
+
+osccal.c and osccal.h
+  This module contains a function which calibrates the AVR's built-in RC
+  oscillator based on the USB frame clock. See osccal.h for a documentation
+  of the API.
+
+osctune.h
+  This header file contains a code snippet for usbconfig.h. With this code,
+  you can keep the AVR's internal RC oscillator in sync with the USB frame
+  clock. This is a continuous synchronization, not a single calibration at
+  USB reset as with osccal.c above. Please note that this code works only
+  if D- is wired to the interrupt, not D+.
+
+----------------------------------------------------------------------------
+(c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH.
+http://www.obdev.at/