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Dario Ernst
b99c9da7e8
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15 years ago | |
|---|---|---|
| .. | ||
| Readme.txt | 15 years ago | |
| osccal.c | 15 years ago | |
| osccal.h | 15 years ago | |
| osctune.h | 15 years ago | |
Readme.txt
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/