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/*! \file avrlibdefs.h \brief AVRlib global defines and macros. */ |
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//***************************************************************************** |
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// |
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// File Name : 'avrlibdefs.h' |
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// Title : AVRlib global defines and macros include file |
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// Author : Pascal Stang |
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// Created : 7/12/2001 |
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// Revised : 9/30/2002 |
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// Version : 1.1 |
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// Target MCU : Atmel AVR series |
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// Editor Tabs : 4 |
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// |
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// Description : This include file is designed to contain items useful to all |
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// code files and projects, regardless of specific implementation. |
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// |
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// This code is distributed under the GNU Public License |
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// which can be found at http://www.gnu.org/licenses/gpl.txt |
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// |
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//***************************************************************************** |
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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 |