84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
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//
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// avrlibdefs.h : AVRlib global defines and macros include file
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//
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// Copyright (c) 2001-2002 Pascal Stang
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program 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
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// $Id$
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#ifndef AVRLIBDEFS_H
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#define AVRLIBDEFS_H
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// Code compatibility to new AVR-libc
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// outb(), inb(), inw(), outw(), BV(), sbi(), cbi(), sei(), cli()
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#ifndef outb
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#define outb(addr, data) addr = (data)
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#endif
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#ifndef inb
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#define inb(addr) (addr)
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#endif
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#ifndef outw
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#define outw(addr, data) addr = (data)
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#endif
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#ifndef inw
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#define inw(addr) (addr)
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#endif
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#ifndef BV
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#define BV(bit) (1<<(bit))
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#endif
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#ifndef cbi
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#define cbi(reg,bit) reg &= ~(BV(bit))
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#endif
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#ifndef sbi
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#define sbi(reg,bit) reg |= (BV(bit))
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#endif
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#ifndef cli
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#define cli() __asm__ __volatile__ ("cli" ::)
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#endif
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#ifndef sei
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#define sei() __asm__ __volatile__ ("sei" ::)
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#endif
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// support for individual port pin naming in the mega128
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// see port128.h for details
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#ifdef __AVR_ATmega128__
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// not currently necessary due to inclusion
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// of these defines in newest AVR-GCC
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// do a quick test to see if include is needed
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#ifndef PD0
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#include "port128.h"
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#endif
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#endif
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// use this for packed structures
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// (this is seldom necessary on an 8-bit architecture like AVR,
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// but can assist in code portability to AVR)
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#define GNUC_PACKED __attribute__((packed))
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// port address helpers
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#define DDR(x) ((x)-1) // address of data direction register of port x
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#define PIN(x) ((x)-2) // address of input register of port x
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// MIN/MAX/ABS macros
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#define MIN(a,b) ((a<b)?(a):(b))
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#define MAX(a,b) ((a>b)?(a):(b))
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#define ABS(x) ((x>0)?(x):(-x))
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// constants
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#define PI 3.14159265359
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#endif
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