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   <div id="projectbrief">LCD Library - LCD control class hierarchy library. Drop in replacement for the LiquidCrystal Library.</div>
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<div class="title">/Users/fmalpartida/development/ardWorkspace/LiquidCrystal_I2C/LiquiCrystal_I2C/LiquidCrystal_I2C.h</div>  </div>
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<a href="_liquid_crystal___i2_c_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// ---------------------------------------------------------------------------</span>
<a name="l00002"></a>00002 <span class="comment">// Created by Francisco Malpartida on 20/08/11.</span>
<a name="l00003"></a>00003 <span class="comment">// Copyright 2011 - Under creative commons license 3.0:</span>
<a name="l00004"></a>00004 <span class="comment">//        Attribution-ShareAlike CC BY-SA</span>
<a name="l00005"></a>00005 <span class="comment">//</span>
<a name="l00006"></a>00006 <span class="comment">// This software is furnished &quot;as is&quot;, without technical support, and with no </span>
<a name="l00007"></a>00007 <span class="comment">// warranty, express or implied, as to its usefulness for any purpose.</span>
<a name="l00008"></a>00008 <span class="comment">//</span>
<a name="l00009"></a>00009 <span class="comment">// Thread Safe: No</span>
<a name="l00010"></a>00010 <span class="comment">// Extendable: Yes</span>
<a name="l00011"></a>00011 <span class="comment">//</span>
<a name="l00012"></a>00012 <span class="comment">// @file LiquidCrystal_I2C.h</span>
<a name="l00013"></a>00013 <span class="comment">// This file implements a basic liquid crystal library that comes as standard</span>
<a name="l00014"></a>00014 <span class="comment">// in the Arduino SDK but using an I2C IO extension board.</span>
<a name="l00015"></a>00015 <span class="comment">// </span>
<a name="l00016"></a>00016 <span class="comment">// @brief </span>
<a name="l00017"></a>00017 <span class="comment">// This is a basic implementation of the LiquidCrystal library of the</span>
<a name="l00018"></a>00018 <span class="comment">// Arduino SDK. The original library has been reworked in such a way that </span>
<a name="l00019"></a>00019 <span class="comment">// this class implements the all methods to command an LCD based</span>
<a name="l00020"></a>00020 <span class="comment">// on the Hitachi HD44780 and compatible chipsets using I2C extension</span>
<a name="l00021"></a>00021 <span class="comment">// backpacks such as the I2CLCDextraIO with the PCF8574* I2C IO Expander ASIC.</span>
<a name="l00022"></a>00022 <span class="comment">//</span>
<a name="l00023"></a>00023 <span class="comment">// The functionality provided by this class and its base class is identical</span>
<a name="l00024"></a>00024 <span class="comment">// to the original functionality of the Arduino LiquidCrystal library.</span>
<a name="l00025"></a>00025 <span class="comment">//</span>
<a name="l00026"></a>00026 <span class="comment">//</span>
<a name="l00027"></a>00027 <span class="comment">// @author F. Malpartida - fmalpartida@gmail.com</span>
<a name="l00028"></a>00028 <span class="comment">// ---------------------------------------------------------------------------</span>
<a name="l00029"></a>00029 <span class="preprocessor">#ifndef LiquidCrystal_I2C_h</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#define LiquidCrystal_I2C_h</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor">#include &lt;inttypes.h&gt;</span>
<a name="l00032"></a>00032 <span class="preprocessor">#include &lt;Print.h&gt;</span>
<a name="l00033"></a>00033 
<a name="l00034"></a>00034 <span class="preprocessor">#include &quot;<a class="code" href="_i2_c_i_o_8h.html">I2CIO.h</a>&quot;</span>
<a name="l00035"></a>00035 <span class="preprocessor">#include &quot;<a class="code" href="_l_c_d_8h.html">LCD.h</a>&quot;</span>
<a name="l00036"></a>00036 
<a name="l00037"></a>00037 
<a name="l00038"></a><a class="code" href="class_liquid_crystal___i2_c.html">00038</a> <span class="keyword">class </span><a class="code" href="class_liquid_crystal___i2_c.html">LiquidCrystal_I2C</a> : <span class="keyword">public</span> <a class="code" href="class_l_c_d.html">LCD</a> 
<a name="l00039"></a>00039 {
<a name="l00040"></a>00040 <span class="keyword">public</span>:
<a name="l00041"></a>00041    
<a name="l00051"></a>00051    <a class="code" href="class_liquid_crystal___i2_c.html#aac537d195557e0b8afac1a71441a484c">LiquidCrystal_I2C</a> (uint8_t lcd_Addr);
<a name="l00052"></a>00052    <span class="comment">// Constructor with backlight control</span>
<a name="l00053"></a>00053    <a class="code" href="class_liquid_crystal___i2_c.html#aac537d195557e0b8afac1a71441a484c">LiquidCrystal_I2C</a> (uint8_t lcd_Addr, uint8_t backlighPin, <a class="code" href="_l_c_d_8h.html#aeeef728bf4726268aa5e99391a1502bc">t_backlighPol</a> pol);
<a name="l00054"></a>00054    
<a name="l00067"></a>00067    <a class="code" href="class_liquid_crystal___i2_c.html#aac537d195557e0b8afac1a71441a484c">LiquidCrystal_I2C</a>( uint8_t lcd_Addr, uint8_t En, uint8_t Rw, uint8_t Rs);
<a name="l00068"></a>00068    <span class="comment">// Constructor with backlight control</span>
<a name="l00069"></a>00069    <a class="code" href="class_liquid_crystal___i2_c.html#aac537d195557e0b8afac1a71441a484c">LiquidCrystal_I2C</a>(uint8_t lcd_Addr, uint8_t En, uint8_t Rw, uint8_t Rs,
<a name="l00070"></a>00070                      uint8_t backlighPin, <a class="code" href="_l_c_d_8h.html#aeeef728bf4726268aa5e99391a1502bc">t_backlighPol</a> pol);   
<a name="l00071"></a>00071    
<a name="l00088"></a>00088    <a class="code" href="class_liquid_crystal___i2_c.html#aac537d195557e0b8afac1a71441a484c">LiquidCrystal_I2C</a>(uint8_t lcd_Addr, uint8_t En, uint8_t Rw, uint8_t Rs, 
<a name="l00089"></a>00089                      uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7 );
<a name="l00090"></a>00090    <span class="comment">// Constructor with backlight control</span>
<a name="l00091"></a>00091    <a class="code" href="class_liquid_crystal___i2_c.html#aac537d195557e0b8afac1a71441a484c">LiquidCrystal_I2C</a>(uint8_t lcd_Addr, uint8_t En, uint8_t Rw, uint8_t Rs, 
<a name="l00092"></a>00092                      uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7,
<a name="l00093"></a>00093                      uint8_t backlighPin, <a class="code" href="_l_c_d_8h.html#aeeef728bf4726268aa5e99391a1502bc">t_backlighPol</a> pol);
<a name="l00110"></a>00110    <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_liquid_crystal___i2_c.html#aeee2ada537f0cfbfda8613324b57c4a6">begin</a>(uint8_t cols, uint8_t rows, uint8_t charsize = <a class="code" href="_l_c_d_8h.html#a9ef57e724c1b846dae0f531aff6fb464">LCD_5x8DOTS</a>);   
<a name="l00111"></a>00111    
<a name="l00124"></a>00124    <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_liquid_crystal___i2_c.html#a8bf1fab7efe13e8b17b96c42d1f810b4">send</a>(uint8_t value, uint8_t mode);
<a name="l00125"></a>00125    
<a name="l00134"></a>00134    <span class="keywordtype">void</span> <a class="code" href="class_liquid_crystal___i2_c.html#a2eaf86f62d1f169b3763b03fbf88f70b">setBacklightPin</a> ( uint8_t value, <a class="code" href="_l_c_d_8h.html#aeeef728bf4726268aa5e99391a1502bc">t_backlighPol</a> pol );
<a name="l00135"></a>00135    
<a name="l00145"></a>00145    <span class="keywordtype">void</span> <a class="code" href="class_liquid_crystal___i2_c.html#af11b8fa0082616e2b6e6e4238589d8a8">setBacklight</a> ( uint8_t value );
<a name="l00146"></a>00146    
<a name="l00147"></a>00147 <span class="keyword">private</span>:
<a name="l00148"></a>00148    
<a name="l00154"></a>00154    <span class="keywordtype">int</span>  init();
<a name="l00155"></a>00155    
<a name="l00171"></a>00171    <span class="keywordtype">void</span> config (uint8_t lcd_Addr, uint8_t En, uint8_t Rw, uint8_t Rs, 
<a name="l00172"></a>00172                 uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7 );
<a name="l00173"></a>00173    
<a name="l00182"></a>00182    <span class="keywordtype">void</span> write4bits(uint8_t value, uint8_t mode);
<a name="l00183"></a>00183    
<a name="l00190"></a>00190    <span class="keywordtype">void</span> pulseEnable(uint8_t);
<a name="l00191"></a>00191    
<a name="l00192"></a>00192    
<a name="l00193"></a>00193    uint8_t _Addr;             <span class="comment">// I2C Address of the IO expander</span>
<a name="l00194"></a>00194    uint8_t _backlightPinMask; <span class="comment">// Backlight IO pin mask</span>
<a name="l00195"></a>00195    uint8_t _backlightStsMask; <span class="comment">// Backlight status mask</span>
<a name="l00196"></a>00196    <a class="code" href="class_i2_c_i_o.html">I2CIO</a>   _i2cio;            <span class="comment">// I2CIO PCF8574* expansion module driver I2CLCDextraIO</span>
<a name="l00197"></a>00197    uint8_t _En;               <span class="comment">// LCD expander word for enable pin</span>
<a name="l00198"></a>00198    uint8_t _Rw;               <span class="comment">// LCD expander word for R/W pin</span>
<a name="l00199"></a>00199    uint8_t _Rs;               <span class="comment">// LCD expander word for Register Select pin</span>
<a name="l00200"></a>00200    uint8_t _data_pins[4];     <span class="comment">// LCD data lines</span>
<a name="l00201"></a>00201    
<a name="l00202"></a>00202 };
<a name="l00203"></a>00203 
<a name="l00204"></a>00204 <span class="preprocessor">#endif</span>
</pre></div></div>
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