Readme.txt 900 B

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  1. This is the Readme file for the libs-device directory. This directory contains
  2. code snippets which may be useful for USB device firmware.
  3. WHAT IS INCLUDED IN THIS DIRECTORY?
  4. ===================================
  5. osccal.c and osccal.h
  6. This module contains a function which calibrates the AVR's built-in RC
  7. oscillator based on the USB frame clock. See osccal.h for a documentation
  8. of the API.
  9. osctune.h
  10. This header file contains a code snippet for usbconfig.h. With this code,
  11. you can keep the AVR's internal RC oscillator in sync with the USB frame
  12. clock. This is a continuous synchronization, not a single calibration at
  13. USB reset as with osccal.c above. Please note that this code works only
  14. if D- is wired to the interrupt, not D+.
  15. ----------------------------------------------------------------------------
  16. (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH.
  17. http://www.obdev.at/