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<h1>avrlibdefs.h</h1><a href="avrlibdefs_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment">00001 <span class="comment">/*! \file avrlibdefs.h \brief AVRlib global defines and macros. */</span>
00002 <span class="comment">//*****************************************************************************</span>
00003 <span class="comment">//</span>
00004 <span class="comment">// File Name : 'avrlibdefs.h'</span>
00005 <span class="comment">// Title : AVRlib global defines and macros include file</span>
00006 <span class="comment">// Author : Pascal Stang</span>
00007 <span class="comment">// Created : 7/12/2001</span>
00008 <span class="comment">// Revised : 9/30/2002</span>
00009 <span class="comment">// Version : 1.1</span>
00010 <span class="comment">// Target MCU : Atmel AVR series</span>
00011 <span class="comment">// Editor Tabs : 4</span>
00012 <span class="comment">//</span>
00013 <span class="comment">// Description : This include file is designed to contain items useful to all</span>
00014 <span class="comment">// code files and projects, regardless of specific implementation.</span>
00015 <span class="comment">//</span>
00016 <span class="comment">// This code is distributed under the GNU Public License</span>
00017 <span class="comment">// which can be found at http://www.gnu.org/licenses/gpl.txt</span>
00018 <span class="comment">//</span>
00019 <span class="comment">//*****************************************************************************</span>
00020
00021
00022 <span class="preprocessor">#ifndef AVRLIBDEFS_H</span>
00023 <span class="preprocessor"></span><span class="preprocessor">#define AVRLIBDEFS_H</span>
00024 <span class="preprocessor"></span>
00025 <span class="comment">// Code compatibility to new AVR-libc</span>
00026 <span class="comment">// outb(), inb(), inw(), outw(), BV(), sbi(), cbi(), sei(), cli()</span>
00027 <span class="preprocessor">#ifndef outb</span>
00028 <span class="preprocessor"></span><span class="preprocessor"> #define outb(addr, data) addr = (data)</span>
00029 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00030 <span class="preprocessor"></span><span class="preprocessor">#ifndef inb</span>
00031 <span class="preprocessor"></span><span class="preprocessor"> #define inb(addr) (addr)</span>
00032 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00033 <span class="preprocessor"></span><span class="preprocessor">#ifndef outw</span>
00034 <span class="preprocessor"></span><span class="preprocessor"> #define outw(addr, data) addr = (data)</span>
00035 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00036 <span class="preprocessor"></span><span class="preprocessor">#ifndef inw</span>
00037 <span class="preprocessor"></span><span class="preprocessor"> #define inw(addr) (addr)</span>
00038 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00039 <span class="preprocessor"></span><span class="preprocessor">#ifndef BV</span>
00040 <span class="preprocessor"></span><span class="preprocessor"> #define BV(bit) (1<<(bit))</span>
00041 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00042 <span class="preprocessor"></span><span class="preprocessor">#ifndef cbi</span>
00043 <span class="preprocessor"></span><span class="preprocessor"> #define cbi(reg,bit) reg &= ~(BV(bit))</span>
00044 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00045 <span class="preprocessor"></span><span class="preprocessor">#ifndef sbi</span>
00046 <span class="preprocessor"></span><span class="preprocessor"> #define sbi(reg,bit) reg |= (BV(bit))</span>
00047 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00048 <span class="preprocessor"></span><span class="preprocessor">#ifndef cli</span>
00049 <span class="preprocessor"></span><span class="preprocessor"> #define cli() __asm__ __volatile__ ("cli" ::)</span>
00050 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00051 <span class="preprocessor"></span><span class="preprocessor">#ifndef sei</span>
00052 <span class="preprocessor"></span><span class="preprocessor"> #define sei() __asm__ __volatile__ ("sei" ::)</span>
00053 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00054 <span class="preprocessor"></span>
00055 <span class="comment">// support for individual port pin naming in the mega128</span>
00056 <span class="comment">// see port128.h for details</span>
00057 <span class="preprocessor">#ifdef __AVR_ATmega128__</span>
00058 <span class="preprocessor"></span><span class="comment">// not currently necessary due to inclusion</span>
00059 <span class="comment">// of these defines in newest AVR-GCC</span>
00060 <span class="comment">// do a quick test to see if include is needed</span>
00061 <span class="preprocessor">#ifndef PD0</span>
00062 <span class="preprocessor"></span><span class="preprocessor"> #include "<a class="code" href="port128_8h.html">port128.h</a>"</span>
00063 <span class="preprocessor">#endif</span>
00064 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00065 <span class="preprocessor"></span>
00066 <span class="comment">// use this for packed structures</span>
00067 <span class="comment">// (this is seldom necessary on an 8-bit architecture like AVR,</span>
00068 <span class="comment">// but can assist in code portability to AVR)</span>
<a name="l00069"></a><a class="code" href="group__dhcp.html#ga41">00069</a> <span class="preprocessor">#define GNUC_PACKED __attribute__((packed)) </span>
00070 <span class="preprocessor"></span>
00071 <span class="comment">// port address helpers</span>
00072 <span class="preprocessor">#define DDR(x) ((x)-1) // address of data direction register of port x</span>
00073 <span class="preprocessor"></span><span class="preprocessor">#define PIN(x) ((x)-2) // address of input register of port x</span>
00074 <span class="preprocessor"></span>
00075 <span class="comment">// MIN/MAX/ABS macros</span>
00076 <span class="preprocessor">#define MIN(a,b) ((a<b)?(a):(b))</span>
00077 <span class="preprocessor"></span><span class="preprocessor">#define MAX(a,b) ((a>b)?(a):(b))</span>
00078 <span class="preprocessor"></span><span class="preprocessor">#define ABS(x) ((x>0)?(x):(-x))</span>
00079 <span class="preprocessor"></span>
00080 <span class="comment">// constants</span>
00081 <span class="preprocessor">#define PI 3.14159265359</span>
00082 <span class="preprocessor"></span>
00083 <span class="preprocessor">#endif</span>
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