examples/AT91/Master/io_macro.h
author greg
Wed, 15 Jul 2009 09:32:35 +0200
changeset 555 ee24dcbd3e64
parent 521 731bbe1b67b4
permissions -rw-r--r--
Add new example : CANOpen shell
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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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ARM 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 _IO_MACRO
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#define _IO_MACRO
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// Macros for set and clear bits in I/O registers
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#define setbit(address,bit) (address |= (1<<bit))
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#define clearbit(address,bit) (address &= ~(1<<bit))
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#define togglebit(address,bit) (address ^= (1<<bit))
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// Macro for testing of a single bit in an I/O location
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#define checkbit(address,bit) (address & (1<<bit))
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#endif