include/AT91/timerscfg.h
author peter
Mon, 17 Nov 2008 21:11:59 +0100
changeset 524 b94067330319
parent 521 731bbe1b67b4
permissions -rw-r--r--
1.29 Datatypes for timers
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/*
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This file is part of CanFestival, a library implementing CanOpen Stack.
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Copyright (C): Edouard TISSERANT and Francis DUPIN
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AT91 Port: Peter CHRISTEN
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See COPYING file for copyrights details.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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*/
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#ifndef __TIMERSCFG_H__
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#define __TIMERSCFG_H__
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// Whatever your microcontroller, the timer wont work if
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// TIMEVAL is not at least on 32 bits
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#define TIMEVAL UNS32
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// The timer of the AT91 counts from 0000 to 0xFFFF
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#define TIMEVAL_MAX 0xFFFF
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// The timer is incrementing every 2.66 us.
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#define MS_TO_TIMEVAL(ms) ((ms) * 375)
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#define US_TO_TIMEVAL(us) ((us) * 3 / 8)
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#endif