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avrcounter - Incremental encoder counter on AVR microcontroller.

Microcontrolers often have counter inputs, but they do not have any dedicated
inputs for incremental encoders which are therefore tendious to decode without
any external logic.

The avrcounter implements this decoder in an AVR which must be dedicated to
this task.  The number of encoders which can be decoded this way depends on the
encoders maximum frequency.  More encoders means more instruction to decode,
and lower maximum frequency.


Copyright (C) 2007 Nicolas Schodet

Robot APB Team 2008.
       Web: http://apbteam.org/
     Email: team AT apbteam DOT org

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.