100 lines
4.9 KiB
HTML
100 lines
4.9 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>Arduino - LiquidCrystalConstructor </title>
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<p><strong>Reference</strong> <a class='wikilink' href='index.html'>Language</a> (<a class='wikilink' href='Extended.html'>extended</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><p><a class='wikilink' href='LiquidCrystal.html'>LiquidCrystal</a>
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</p>
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<p class='vspace'></p><h2><span class='wikiword'>LiquidCrystal</span>()</h2>
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<h4>Description</h4>
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<p>Creates a variable of type <span class='wikiword'>LiquidCrystal</span>. The display can be controlled using 4 or 8 data lines. If the former, omit the pin numbers for d0 to d3 and leave those lines unconnected. The RW pin can be tied to ground instead of connected to a pin on the Arduino; if so, omit it from this function's parameters.
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</p>
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<p class='vspace'></p><h4>Syntax</h4>
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<p><span class='wikiword'>LiquidCrystal</span>(rs, enable, d4, d5, d6, d7) <br /><span class='wikiword'>LiquidCrystal</span>(rs, rw, enable, d4, d5, d6, d7) <br /><span class='wikiword'>LiquidCrystal</span>(rs, enable, d0, d1, d2, d3, d4, d5, d6, d7) <br /><span class='wikiword'>LiquidCrystal</span>(rs, rw, enable, d0, d1, d2, d3, d4, d5, d6, d7)
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</p>
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<p class='vspace'></p><h4>Parameters</h4>
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<p>rs: the number of the Arduino pin that is connected to the RS pin on the LCD
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</p>
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<p class='vspace'></p><p>rw: the number of the Arduino pin that is connected to the RW pin on the LCD (<em>optional</em>)
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</p>
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<p class='vspace'></p><p>enable: the number of the Arduino pin that is connected to the enable pin on the LCD
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</p>
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<p class='vspace'></p><p>d0, d1, d2, d3, d4, d5, d6, d7: the numbers of the Arduino pins that are connected to the corresponding data pins on the LCD. d0, d1, d2, and d3 are optional; if omitted, the LCD will be controlled using only the four data lines (d4, d5, d6, d7).
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</p>
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<p class='vspace'></p><h4>Example</h4>
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<pre>
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#include <LiquidCrystal.h>
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LiquidCrystal lcd(12, 11, 10, 5, 4, 3, 2);
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void setup()
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{
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lcd.print("hello, world!");
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}
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void loop() {}
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</pre>
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<p class='vspace'></p><p><a class='wikilink' href='index.html'>Reference Home</a>
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</p>
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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://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?board=swbugs' 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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