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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: Software Interrupt-driven UART Driver (uartsw2.c)</title><link href="dox.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.2 --><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="dirs.html">Directories</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>Software Interrupt-driven UART Driver (uartsw2.c)<br><small>[<a class="el" href="group__driver__sw.html">Drivers (software-based)</a>]</small></h1><div class="fragment"><pre class="fragment"><span class="preprocessor"> #include "<a class="code" href="uartsw2_8h.html">uartsw2.h</a>"</span> </pre></div> <dl compact><dt><b>Overview</b></dt><dd>This uart library emulates the operation of a UART (serial port) using the AVR's hardware timers, I/O pins, and some software.</dd></dl>Specifically, this code uses: -Timer 2 Output Capture for transmit timing -Timer 0 Output Capture for receive timing -External Interrupt 2 for receive triggering<p>The above resources cannot be used for other purposes while this software UART is enabled. The overflow interrupts from Timer0 and Timer2 can still be used for other timing, but the prescalers for these timers must not be changed.<p>Serial output from this UART can be routed to any I/O pin. Serial input for this UART must come from the External Interrupt 2 (INT2) I/O pin. These options should be configured by editing your local copy of "uartsw2conf.h". <p><table border="0" cellpadding="0" cellspacing="0"><tr><td></td></tr></table><hr size="1"><address style="align: right;"><small>Generated on Mon Oct 24 16:03:57 2005 for Procyon AVRlib by <a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.2 </small></address></body></html>⌨️ 快捷键说明
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