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Arduino/build/linux/work/reference/LiquidCrystalConstructor.html
2012-04-06 12:59:54 +02:00

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<p class='vspace'></p><p><a class='wikilink' href='LiquidCrystal.html'>LiquidCrystal</a>
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<p class='vspace'></p><h2><span class='wikiword'>LiquidCrystal</span>()</h2>
<h4>Description</h4>
<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 class='vspace'></p><h4>Syntax</h4>
<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)
</p>
<p class='vspace'></p><h4>Parameters</h4>
<p>rs: the number of the Arduino pin that is connected to the RS pin on the LCD
</p>
<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>)
</p>
<p class='vspace'></p><p>enable: the number of the Arduino pin that is connected to the enable pin on the LCD
</p>
<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).
</p>
<p class='vspace'></p><h4>Example</h4>
<pre>
#include &lt;LiquidCrystal.h&gt;
LiquidCrystal lcd(12, 11, 10, 5, 4, 3, 2);
void setup()
{
lcd.print("hello, world!");
}
void loop() {}
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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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