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HTML
188 lines
7.8 KiB
HTML
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* GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann
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<div class="title"><a href='http://arduino.cc/en'>Arduino</a></div>
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<p><strong>Reference</strong> <a class='wikilink' href='index.html'>Language</a> | <a class='wikilink' href='Libraries.html'>Libraries</a> | <a class='wikilink' href='Comparison.html'>Comparison</a> | <a class='wikilink' href='Changes.html'>Changes</a>
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</p>
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<p class='vspace'></p><h2><span class='wikiword'>SoftwareSerial</span>: overflow()</h2>
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<h4>Description</h4>
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<p>Tests to see if a software serial buffer overflow has occurred. A software serial buffer can hold 64 bytes.
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</p>
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<p class='vspace'></p><h4>Syntax</h4>
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<p>mySerial.overflow()
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</p>
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<p class='vspace'></p><h4>Parameters</h4>
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<p>none
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</p>
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<p class='vspace'></p><h4>Returns</h4>
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<p>boolean
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</p>
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<p class='vspace'></p><h4>Example</h4>
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<p>
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<div class='sourceblock ' id='sourceblock1'>
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<div class='sourceblocktext'><div class="arduino"><span class="co2">#include <SoftwareSerial.h></span><br />
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<br />
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<span class="co1">// software serial : TX = digital pin 2, RX = digital pin 3</span><br />
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SoftwareSerial portOne<span class="br0">(</span><span class="nu0">2</span><span class="sy0">,</span> <span class="nu0">3</span><span class="br0">)</span><span class="sy0">;</span><br />
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<br />
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<span class="kw1">void</span> <span class="kw3">setup</span><span class="br0">(</span><span class="br0">)</span><br />
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<span class="br0">{</span><br />
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<span class="co1">// Start the hardware serial port</span><br />
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<span class="kw1">Serial</span>.<span class="kw1">begin</span><span class="br0">(</span><span class="nu0">9600</span><span class="br0">)</span><span class="sy0">;</span><br />
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<br />
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<span class="co1">// Start software serial port</span><br />
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portOne.<span class="kw1">begin</span><span class="br0">(</span><span class="nu0">9600</span><span class="br0">)</span><span class="sy0">;</span><br />
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<span class="br0">}</span><br />
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<br />
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<span class="kw1">void</span> <span class="kw3">loop</span><span class="br0">(</span><span class="br0">)</span><br />
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<span class="br0">{</span><br />
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<span class="kw1">if</span> <span class="br0">(</span>portOne.<span class="me1">overflow</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span> <span class="br0">{</span><br />
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<span class="kw1">Serial</span>.<span class="kw1">println</span><span class="br0">(</span><span class="st0">"SoftwareSerial overflow!"</span><span class="br0">)</span><span class="sy0">;</span> <br />
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<span class="br0">}</span></div></div>
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<div class='sourceblocklink'><a href='#' type='text/plain'>[Get Code]</a></div>
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</p>
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<p class='vspace'></p><h4>See also</h4>
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<ul><li><a class='wikilink' href='SoftwareSerialConstructor.html'>SoftwareSerial</a>()
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</li><li><a class='wikilink' href='SoftwareSerialRead.html'>read</a>()
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</li><li><a class='wikilink' href='SoftwareSerialPrint.html'>print</a>()
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</li><li><a class='wikilink' href='SoftwareSerialPrintln.html'>println</a>()
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</li></ul><p><a class='wikilink' href='index.html'>Reference Home</a>
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<p class='vspace'></p><p><em>Corrections, suggestions, and new documentation should be posted to the <a class='urllink' href='http://arduino.cc/forum/index.php/board,23.0.html' rel='nofollow'>Forum</a>.</em>
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</p>
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<p class='vspace'></p><p>The text of the Arduino reference is licensed under a
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<a class='urllink' href='http://creativecommons.org/licenses/by-sa/3.0/' rel='nofollow'>Creative Commons Attribution-ShareAlike 3.0 License</a>. Code samples in the reference are released into the public domain.
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