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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Procyon AVRlib: pwmsw.h Source File</title><link href="dox.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.3.6 --><div class="qindex"><a class="qindex" href="main.html">Main Page</a> | <a class="qindex" href="modules.html">Modules</a> | <a class="qindex" href="annotated.html">Data Structures</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="functions.html">Data Fields</a> | <a class="qindex" href="globals.html">Globals</a></div><h1>pwmsw.h</h1><a href="pwmsw_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <span class="comment">/*! \file pwmsw.h \brief Software interrupt-driven multi-output PWM function library. */</span>00002 <span class="comment">//*****************************************************************************</span>00003 <span class="comment">//</span>00004 <span class="comment">// File Name : 'pwmsw.h'</span>00005 <span class="comment">// Title : Software interrupt-driven multi-output PWM function library</span>00006 <span class="comment">// Author : Pascal Stang - Copyright (C) 2002</span>00007 <span class="comment">// Created : 7/20/2002</span>00008 <span class="comment">// Revised : 7/31/2002</span>00009 <span class="comment">// Version : 0.1</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">// WARNING: this PWM library does not work perfectly. It has known and</span>00014 <span class="comment">// understood problems when two or more PWM outputs are set to nearly the</span>00015 <span class="comment">// same duty cycle. IT MAY NOT BE WORTH USING! YOU HAVE BEEN WARNED!</span>00016 <span class="comment">//</span>00017 <span class="comment">// This code is distributed under the GNU Public License</span>00018 <span class="comment">// which can be found at http://www.gnu.org/licenses/gpl.txt</span>00019 <span class="comment">//</span>00020 <span class="comment">//*****************************************************************************</span>00021 00022 <span class="preprocessor">#ifndef PWMSW_H</span>00023 <span class="preprocessor"></span><span class="preprocessor">#define PWMSW_H</span>00024 <span class="preprocessor"></span>00025 <span class="preprocessor">#include "<a class="code" href="global_8h.html">global.h</a>"</span>00026 <span class="preprocessor">#include "<a class="code" href="timer_8h.html">timer.h</a>"</span>00027 00028 <span class="comment">// constants/macros/typdefs</span>00029 <span class="keyword">typedef</span> <span class="keyword">struct </span>struct_SwPwmChannel00030 { 00031 u08 port; <span class="comment">///< channel's hardware I/O port</span>00032 <span class="comment"></span> u08 pin; <span class="comment">///< channel's hardware I/O pin</span>00033 <span class="comment"></span> u16 duty; <span class="comment">///< active PWM duty setting</span>00034 <span class="comment"></span> u16 setduty; <span class="comment">///< requested PWM duty setting</span>00035 <span class="comment"></span>} SwPwmChannelType;00036 00037 <span class="comment">// number of PWM channels</span>00038 <span class="preprocessor">#define SWPWM_NUM_CHANNELS 3</span>00039 <span class="preprocessor"></span><span class="comment">// define port </span>00040 <span class="preprocessor">#define SWPWMPORT PORTB</span>00041 <span class="preprocessor"></span><span class="preprocessor">#define SWPWMDDR DDRB</span>00042 <span class="preprocessor"></span>00043 <span class="comment">// functions</span>00044 <span class="comment"></span>00045 <span class="comment">//! initializes software PWM system</span>00046 <span class="comment"></span><span class="keywordtype">void</span> <a class="code" href="pwmsw_8h.html#a4">pwmswInit</a>(u16 periodTics);00047 <span class="comment"></span>00048 <span class="comment">//! turns off software PWM system</span>00049 <span class="comment"></span><span class="keywordtype">void</span> <a class="code" href="pwmsw_8c.html#a5">pwmswOff</a>(<span class="keywordtype">void</span>);00050 <span class="comment"></span>00051 <span class="comment">//! set duty on channel</span>00052 <span class="comment"></span><span class="keywordtype">void</span> <a class="code" href="pwmsw_8h.html#a6">pwmswPWMSet</a>(u08 channel, u16 duty);00053 <span class="comment"></span>00054 <span class="comment">//! software PWM interrupt service routine</span>00055 <span class="comment"></span><span class="keywordtype">void</span> <a class="code" href="pwmsw_8c.html#a7">pwmswService</a>(<span class="keywordtype">void</span>);00056 00057 <span class="preprocessor">#endif</span></pre></div><hr size="1"><address style="align: right;"><small>Generated on Fri Oct 15 03:50:22 2004 for Procyon AVRlib by<a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border=0 > </a>1.3.6 </small></address></body></html>⌨️ 快捷键说明
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