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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>AVR446 - Linear speed control of stepper motor: Main Page</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.3.7 --><div class="qindex"><a class="qindexHL" href="main.html">Main Page</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> | <a class="qindex" href="pages.html">Related Pages</a></div><h1>AVR446 - Linear speed control of stepper motor Documentation</h1><p><h3 align="center">Atmel AVR Application Note </h3><h2><a class="anchor" name="Intro">Introduction</a></h2>This documents data structures, functions, variables, defines, enums, and typedefs in the software for application note AVR446.<h2><a class="anchor" name="CI">Compilation Info</a></h2>This software was written for the IAR Embedded Workbench 4.11A.<p>To make project: <ol><li>Add the file <a class="el" href="main_8c.html">main.c</a>, <a class="el" href="sm__driver_8c.html">sm_driver.c</a>, <a class="el" href="speed__cntr_8c.html">speed_cntr.c</a> and <a class="el" href="uart_8c.html">uart.c</a> to project. </li><li>Under processor configuration, select desired Atmel AVR device. </li><li>Enable bit definitions in I/O include files </li><li>Compiler optimizations must be size medium or high optimization to fit the code in a mega48.<ul><li>For size medium optimization CSTACK size must be >= 0x24.</li><li>For size high optimization CSTACK size must be >= 0x23. </li></ul></li></ol><h2><a class="anchor" name="DI">Device Info</a></h2>The included source code is written for all Atmel AVR devices with 16 bit timers.<h2><a class="anchor" name="HW">Hardware Setup</a></h2>Fuse settings: 0xFF, 0xDD, 0xC0 (External Clock running on 3,68Mhz).<p>Port Connections: <ol><li>PD0 - Serial RXD. </li><li>PD1 - Serial TXD. </li><li>PD4 - Stepper motor winding <a class="el" href="sm__driver_8h.html#a8">B2</a>. </li><li>PD5 - Stepper motor winding <a class="el" href="sm__driver_8h.html#a7">B1</a>. </li><li>PD6 - Stepper motor winding <a class="el" href="sm__driver_8h.html#a6">A2</a>. </li><li>PD7 - Stepper motor winding <a class="el" href="sm__driver_8h.html#a5">A1</a>. </li></ol><h2><a class="anchor" name="TDL">ToDo List</a></h2><dl compact><dt><b><a class="el" href="todo.html#_todo000001">Todo:</a></b></dt><dd>Specify the running frequency <a class="el" href="speed__cntr_8h.html#a0">T1_FREQ</a> according to the timer frequency <p>Specify the number of fullsteps in <a class="el" href="speed__cntr_8h.html#a1">FSPR</a> <p>Modify the <a class="el" href="sm__driver_8h.html#a3">SM_PORT</a> and <a class="el" href="sm__driver_8h.html#a4">SM_DRIVE</a> to support desired drive port. <p>Modify <a class="el" href="sm__driver_8h.html#a5">A1</a>, <a class="el" href="sm__driver_8h.html#a6">A2</a>, <a class="el" href="sm__driver_8h.html#a7">B1</a> and <a class="el" href="sm__driver_8h.html#a8">B2</a> to support the pins on the desired drive port. <p>Set the stepping mode in <a class="el" href="sm__driver_8h.html#a2">HALFSTEPS</a> to either halfsteps (HALFSTEPS) or fullsteps (FULLSTEPS) </dd></dl><hr size="1"><address style="align: right;"><small>Generated on Mon May 8 15:05:03 2006 for AVR446 - Linear speed control of stepper motor by<a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border=0 ></a> 1.3.7 </small></address></body></html>⌨️ 快捷键说明
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