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<h1>include/lc7981.h File Reference</h1><code>#include &lt;avr/io.h&gt;</code><br>
<code>#include &lt;util/delay.h&gt;</code><br>
<code>#include &lt;avr/pgmspace.h&gt;</code><br>
<p>
<a href="lc7981_8h-source.html">Go to the source code of this file.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#e6ff861bd55f4dc46f25f5f6abfca15f">LC7981_H_</a>&nbsp;&nbsp;&nbsp;LC7981_H_</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#8e945df7ca614325cafa08258e82a63c">LCD_CTRL</a>&nbsp;&nbsp;&nbsp;PORTC</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#4b6c8400da9a1ca3d4d83f3ef1f9c34a">LCD_CRTL_DDR</a>&nbsp;&nbsp;&nbsp;DDRC</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#4781e073871c6f27f89b9463ad3a4ed1">LCD_RS</a>&nbsp;&nbsp;&nbsp;PC4</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#26089a10ddd59a0dc7283c19ccc02533">LCD_RW</a>&nbsp;&nbsp;&nbsp;PC2</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#1640ffbc0d8ec0f7edb04a2b93918072">LCD_EN</a>&nbsp;&nbsp;&nbsp;PC0</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#25e9d818788f36ed74d7c4579f87f2a6">LCD_DATA</a>&nbsp;&nbsp;&nbsp;PORTD</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#0c114e723aa4c162c415fb6d4d963dd7">LCD_DATA_DDR</a>&nbsp;&nbsp;&nbsp;DDRD</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#795b48274d3f80bc744a707b67fd93e9">lcd_rs_high</a>()&nbsp;&nbsp;&nbsp;(LCD_CTRL |= (1 &lt;&lt; LCD_RS))</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#6edb13d59460246fb4cc32ada1c9f4a8">lcd_rs_low</a>()&nbsp;&nbsp;&nbsp;(LCD_CTRL &amp;= ~(1 &lt;&lt; LCD_RS))</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#d0ce3cd9b481370ad4de36eff08440c8">lcd_rw_high</a>()&nbsp;&nbsp;&nbsp;(LCD_CTRL |= (1 &lt;&lt; LCD_RW))</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#7f5ebe0ca71b1298a7d3423850cc82b1">lcd_rw_low</a>()&nbsp;&nbsp;&nbsp;(LCD_CTRL &amp;= ~(1 &lt;&lt; LCD_RW))</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#e14be306d3620577abc8613d40401b04">lcd_en_high</a>()&nbsp;&nbsp;&nbsp;(LCD_CTRL |= (1 &lt;&lt; LCD_EN))</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#d8dcdb36a9410fd96b2c936b7c9355dd">lcd_en_low</a>()&nbsp;&nbsp;&nbsp;(LCD_CTRL &amp;= ~(1 &lt;&lt; LCD_EN))</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#90a69d37f5c80f3ded970acf2dacf4c0">LCD_TEXT</a>&nbsp;&nbsp;&nbsp;0</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#720ef60606ac38ca3a5ab96a9c2b8168">LCD_TEXT_LINES</a>&nbsp;&nbsp;&nbsp;10</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#82f0a630f3c41b5233f2ceb07c7dd736">LCD_TEXT_COLUMNS</a>&nbsp;&nbsp;&nbsp;26</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#dfaedf8da8e73d39a98d709b519a3117">LCD_GRAPHIC</a>&nbsp;&nbsp;&nbsp;1</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#51e83be6f6929f2a29d5467cd937dfc6">LCD_GRAPHIC_WIDTH</a>&nbsp;&nbsp;&nbsp;160</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#70265c4f840ef78872243e91c923af2f">LCD_GRAPHIC_HEIGHT</a>&nbsp;&nbsp;&nbsp;80</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#eb2d212a26da4a5a4d3231b2773023e5">PIXEL_ON</a>&nbsp;&nbsp;&nbsp;1</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#cda2f1b1cf6310700d0d91643c40e068">PIXEL_OFF</a>&nbsp;&nbsp;&nbsp;0</td></tr>
<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#9b18aca098d68e55bd7dd4b83f4f36e9">lcd_init</a> (uint8_t mode)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">lcd_init set the to default values. <a href="#9b18aca098d68e55bd7dd4b83f4f36e9"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#35c08b1fa742e650f4873939707b893b">lcd_clear</a> ()</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Clears the display by setting the whole memory to 0. <a href="#35c08b1fa742e650f4873939707b893b"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#30251238a49999658455fdb0233757fb">lcd_write_text</a> (char *txt)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#dbf47a5efdf02367ded1ebf8f9edb5fe">lcd_gotoxy</a> (uint8_t x, uint8_t y)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Set the display cursor to a specific location. <a href="#dbf47a5efdf02367ded1ebf8f9edb5fe"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#735111507ed83172f58d5af2953e31c6">lcd_plot_pixel</a> (uint8_t x, uint8_t y, uint8_t set)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">set or unset a pixel at the specified location <a href="#735111507ed83172f58d5af2953e31c6"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#175d691feb304584c8c18e6456e07401">lcd_plot_bitmap</a> (uint8_t x, uint8_t y, const uint8_t *bitmap, uint8_t w, uint8_t h)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#b4f286d6a313df7a5f692e0b4a9509ad">lcd_strobe</a> ()</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Generates the strobe signal for writing data. <a href="#b4f286d6a313df7a5f692e0b4a9509ad"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#b69146a9179fc5b5deef3fc61cf0208c">lcd_write_command</a> (uint8_t cmd, uint8_t data)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Writes a command and a data byte to the lcd. <a href="#b69146a9179fc5b5deef3fc61cf0208c"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">uint8_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="lc7981_8h.html#6334333537ad1d0bd51cba1e80f32e74">lcd_read_byte</a> ()</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Reads a byte from the display memory. <a href="#6334333537ad1d0bd51cba1e80f32e74"></a><br></td></tr>
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<hr><h2>Define Documentation</h2>
<a class="anchor" name="e6ff861bd55f4dc46f25f5f6abfca15f"></a><!-- doxytag: member="lc7981.h::LC7981_H_" ref="e6ff861bd55f4dc46f25f5f6abfca15f" args="" -->
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<td class="memname">#define LC7981_H_&nbsp;&nbsp;&nbsp;LC7981_H_ </td>
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<a class="anchor" name="4b6c8400da9a1ca3d4d83f3ef1f9c34a"></a><!-- doxytag: member="lc7981.h::LCD_CRTL_DDR" ref="4b6c8400da9a1ca3d4d83f3ef1f9c34a" args="" -->
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<td class="memname">#define LCD_CRTL_DDR&nbsp;&nbsp;&nbsp;DDRC </td>
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<a class="anchor" name="8e945df7ca614325cafa08258e82a63c"></a><!-- doxytag: member="lc7981.h::LCD_CTRL" ref="8e945df7ca614325cafa08258e82a63c" args="" -->
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<td class="memname">#define LCD_CTRL&nbsp;&nbsp;&nbsp;PORTC </td>
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<a class="anchor" name="25e9d818788f36ed74d7c4579f87f2a6"></a><!-- doxytag: member="lc7981.h::LCD_DATA" ref="25e9d818788f36ed74d7c4579f87f2a6" args="" -->
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<td class="memname">#define LCD_DATA&nbsp;&nbsp;&nbsp;PORTD </td>
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<a class="anchor" name="0c114e723aa4c162c415fb6d4d963dd7"></a><!-- doxytag: member="lc7981.h::LCD_DATA_DDR" ref="0c114e723aa4c162c415fb6d4d963dd7" args="" -->
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<td class="memname">#define LCD_DATA_DDR&nbsp;&nbsp;&nbsp;DDRD </td>
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<a class="anchor" name="1640ffbc0d8ec0f7edb04a2b93918072"></a><!-- doxytag: member="lc7981.h::LCD_EN" ref="1640ffbc0d8ec0f7edb04a2b93918072" args="" -->
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<td class="memname">#define LCD_EN&nbsp;&nbsp;&nbsp;PC0 </td>
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<a class="anchor" name="e14be306d3620577abc8613d40401b04"></a><!-- doxytag: member="lc7981.h::lcd_en_high" ref="e14be306d3620577abc8613d40401b04" args="()" -->
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<td class="memname">#define lcd_en_high </td>
<td>(</td>
&nbsp;</td>
<td class="paramname"> </td>
<td>&nbsp;)&nbsp;</td>
<td width="100%">&nbsp;&nbsp;&nbsp;(LCD_CTRL |= (1 &lt;&lt; LCD_EN))</td>
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<a class="anchor" name="d8dcdb36a9410fd96b2c936b7c9355dd"></a><!-- doxytag: member="lc7981.h::lcd_en_low" ref="d8dcdb36a9410fd96b2c936b7c9355dd" args="()" -->
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<td class="memname">#define lcd_en_low </td>
<td>(</td>
&nbsp;</td>
<td class="paramname"> </td>
<td>&nbsp;)&nbsp;</td>
<td width="100%">&nbsp;&nbsp;&nbsp;(LCD_CTRL &amp;= ~(1 &lt;&lt; LCD_EN))</td>
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<a class="anchor" name="dfaedf8da8e73d39a98d709b519a3117"></a><!-- doxytag: member="lc7981.h::LCD_GRAPHIC" ref="dfaedf8da8e73d39a98d709b519a3117" args="" -->
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<td class="memname">#define LCD_GRAPHIC&nbsp;&nbsp;&nbsp;1 </td>
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<a class="anchor" name="70265c4f840ef78872243e91c923af2f"></a><!-- doxytag: member="lc7981.h::LCD_GRAPHIC_HEIGHT" ref="70265c4f840ef78872243e91c923af2f" args="" -->
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<td class="memname">#define LCD_GRAPHIC_HEIGHT&nbsp;&nbsp;&nbsp;80 </td>
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<a class="anchor" name="51e83be6f6929f2a29d5467cd937dfc6"></a><!-- doxytag: member="lc7981.h::LCD_GRAPHIC_WIDTH" ref="51e83be6f6929f2a29d5467cd937dfc6" args="" -->
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<td class="memname">#define LCD_GRAPHIC_WIDTH&nbsp;&nbsp;&nbsp;160 </td>
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<a class="anchor" name="4781e073871c6f27f89b9463ad3a4ed1"></a><!-- doxytag: member="lc7981.h::LCD_RS" ref="4781e073871c6f27f89b9463ad3a4ed1" args="" -->
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<td class="memname">#define LCD_RS&nbsp;&nbsp;&nbsp;PC4 </td>
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<a class="anchor" name="795b48274d3f80bc744a707b67fd93e9"></a><!-- doxytag: member="lc7981.h::lcd_rs_high" ref="795b48274d3f80bc744a707b67fd93e9" args="()" -->
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<td class="memname">#define lcd_rs_high </td>
<td>(</td>
&nbsp;</td>
<td class="paramname"> </td>
<td>&nbsp;)&nbsp;</td>
<td width="100%">&nbsp;&nbsp;&nbsp;(LCD_CTRL |= (1 &lt;&lt; LCD_RS))</td>
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<a class="anchor" name="6edb13d59460246fb4cc32ada1c9f4a8"></a><!-- doxytag: member="lc7981.h::lcd_rs_low" ref="6edb13d59460246fb4cc32ada1c9f4a8" args="()" -->
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<td class="memname">#define lcd_rs_low </td>
<td>(</td>
&nbsp;</td>
<td class="paramname"> </td>
<td>&nbsp;)&nbsp;</td>
<td width="100%">&nbsp;&nbsp;&nbsp;(LCD_CTRL &amp;= ~(1 &lt;&lt; LCD_RS))</td>
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<a class="anchor" name="26089a10ddd59a0dc7283c19ccc02533"></a><!-- doxytag: member="lc7981.h::LCD_RW" ref="26089a10ddd59a0dc7283c19ccc02533" args="" -->
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<td class="memname">#define LCD_RW&nbsp;&nbsp;&nbsp;PC2 </td>
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<a class="anchor" name="d0ce3cd9b481370ad4de36eff08440c8"></a><!-- doxytag: member="lc7981.h::lcd_rw_high" ref="d0ce3cd9b481370ad4de36eff08440c8" args="()" -->
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<td class="memname">#define lcd_rw_high </td>
<td>(</td>
&nbsp;</td>
<td class="paramname"> </td>
<td>&nbsp;)&nbsp;</td>
<td width="100%">&nbsp;&nbsp;&nbsp;(LCD_CTRL |= (1 &lt;&lt; LCD_RW))</td>
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<a class="anchor" name="7f5ebe0ca71b1298a7d3423850cc82b1"></a><!-- doxytag: member="lc7981.h::lcd_rw_low" ref="7f5ebe0ca71b1298a7d3423850cc82b1" args="()" -->
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<td class="memname">#define lcd_rw_low </td>
<td>(</td>
&nbsp;</td>
<td class="paramname"> </td>
<td>&nbsp;)&nbsp;</td>
<td width="100%">&nbsp;&nbsp;&nbsp;(LCD_CTRL &amp;= ~(1 &lt;&lt; LCD_RW))</td>
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<a class="anchor" name="90a69d37f5c80f3ded970acf2dacf4c0"></a><!-- doxytag: member="lc7981.h::LCD_TEXT" ref="90a69d37f5c80f3ded970acf2dacf4c0" args="" -->
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<td class="memname">#define LCD_TEXT&nbsp;&nbsp;&nbsp;0 </td>
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<a class="anchor" name="82f0a630f3c41b5233f2ceb07c7dd736"></a><!-- doxytag: member="lc7981.h::LCD_TEXT_COLUMNS" ref="82f0a630f3c41b5233f2ceb07c7dd736" args="" -->
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<td class="memname">#define LCD_TEXT_COLUMNS&nbsp;&nbsp;&nbsp;26 </td>
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<a class="anchor" name="720ef60606ac38ca3a5ab96a9c2b8168"></a><!-- doxytag: member="lc7981.h::LCD_TEXT_LINES" ref="720ef60606ac38ca3a5ab96a9c2b8168" args="" -->
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<td class="memname">#define LCD_TEXT_LINES&nbsp;&nbsp;&nbsp;10 </td>
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<a class="anchor" name="cda2f1b1cf6310700d0d91643c40e068"></a><!-- doxytag: member="lc7981.h::PIXEL_OFF" ref="cda2f1b1cf6310700d0d91643c40e068" args="" -->
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<td class="memname">#define PIXEL_OFF&nbsp;&nbsp;&nbsp;0 </td>
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<a class="anchor" name="eb2d212a26da4a5a4d3231b2773023e5"></a><!-- doxytag: member="lc7981.h::PIXEL_ON" ref="eb2d212a26da4a5a4d3231b2773023e5" args="" -->
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<td class="memname">#define PIXEL_ON&nbsp;&nbsp;&nbsp;1 </td>
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<hr><h2>Function Documentation</h2>
<a class="anchor" name="35c08b1fa742e650f4873939707b893b"></a><!-- doxytag: member="lc7981.h::lcd_clear" ref="35c08b1fa742e650f4873939707b893b" args="()" -->
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<td class="memname">void lcd_clear </td>
<td>(</td>
<td class="paramname"> </td>
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<p>
Clears the display by setting the whole memory to 0.
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<a class="anchor" name="dbf47a5efdf02367ded1ebf8f9edb5fe"></a><!-- doxytag: member="lc7981.h::lcd_gotoxy" ref="dbf47a5efdf02367ded1ebf8f9edb5fe" args="(uint8_t x, uint8_t y)" -->
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<td class="memname">void lcd_gotoxy </td>
<td>(</td>
<td class="paramtype">uint8_t&nbsp;</td>
<td class="paramname"> <em>x</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint8_t&nbsp;</td>
<td class="paramname"> <em>y</em></td><td>&nbsp;</td>
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<td></td><td></td><td width="100%"><code> [inline]</code></td>
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<p>
Set the display cursor to a specific location.
<p>
Right now this does only work in text mode, since there's no need for it now in graphics mode. <br>
If the x and y values are to big, the function does nothing.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>x</em>&nbsp;</td><td>the horizontal cursorposition (starts at 0) </td></tr>
<tr><td valign="top"></td><td valign="top"><em>y</em>&nbsp;</td><td>the vertical cursorposition (starts at 0) </td></tr>
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<a class="anchor" name="9b18aca098d68e55bd7dd4b83f4f36e9"></a><!-- doxytag: member="lc7981.h::lcd_init" ref="9b18aca098d68e55bd7dd4b83f4f36e9" args="(uint8_t mode)" -->
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<td class="memname">void lcd_init </td>
<td>(</td>
<td class="paramtype">uint8_t&nbsp;</td>
<td class="paramname"> <em>mode</em> </td>
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lcd_init set the to default values.
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<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>mode</em>&nbsp;</td><td>LCD_TEXT for text mode and LCD_GRAPHIC for graphic mode </td></tr>
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<a class="anchor" name="175d691feb304584c8c18e6456e07401"></a><!-- doxytag: member="lc7981.h::lcd_plot_bitmap" ref="175d691feb304584c8c18e6456e07401" args="(uint8_t x, uint8_t y, const uint8_t *bitmap, uint8_t w, uint8_t h)" -->
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<td class="memname">void lcd_plot_bitmap </td>
<td>(</td>
<td class="paramtype">uint8_t&nbsp;</td>
<td class="paramname"> <em>x</em>, </td>
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<td class="paramtype">uint8_t&nbsp;</td>
<td class="paramname"> <em>y</em>, </td>
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<td class="paramtype">uint8_t&nbsp;</td>
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<td class="paramtype">uint8_t&nbsp;</td>
<td class="paramname"> <em>h</em></td><td>&nbsp;</td>
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<a class="anchor" name="735111507ed83172f58d5af2953e31c6"></a><!-- doxytag: member="lc7981.h::lcd_plot_pixel" ref="735111507ed83172f58d5af2953e31c6" args="(uint8_t x, uint8_t y, uint8_t set)" -->
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<td class="memname">void lcd_plot_pixel </td>
<td>(</td>
<td class="paramtype">uint8_t&nbsp;</td>
<td class="paramname"> <em>x</em>, </td>
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<td class="paramtype">uint8_t&nbsp;</td>
<td class="paramname"> <em>y</em>, </td>
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<td class="paramtype">uint8_t&nbsp;</td>
<td class="paramname"> <em>set</em></td><td>&nbsp;</td>
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<p>
set or unset a pixel at the specified location
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>x</em>&nbsp;</td><td>horizontal position of the pixel (starts at 0) </td></tr>
<tr><td valign="top"></td><td valign="top"><em>y</em>&nbsp;</td><td>horizontal position of the pixel (starts at 0) </td></tr>
<tr><td valign="top"></td><td valign="top"><em>set</em>&nbsp;</td><td>can be PIXEL_ON or PIXEL_OFF </td></tr>
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</dl>
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<a class="anchor" name="6334333537ad1d0bd51cba1e80f32e74"></a><!-- doxytag: member="lc7981.h::lcd_read_byte" ref="6334333537ad1d0bd51cba1e80f32e74" args="()" -->
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<td class="memname">uint8_t lcd_read_byte </td>
<td>(</td>
<td class="paramname"> </td>
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<p>
Reads a byte from the display memory.
<p>
lcd_gotoxy can be used to set the location. Important : lcd_gotoxy doesn't work in graphics mode yet.<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>the byte which has been read </dd></dl>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="lc7981_8h.html#dbf47a5efdf02367ded1ebf8f9edb5fe" title="Set the display cursor to a specific location.">lcd_gotoxy</a> </dd></dl>
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<a class="anchor" name="b4f286d6a313df7a5f692e0b4a9509ad"></a><!-- doxytag: member="lc7981.h::lcd_strobe" ref="b4f286d6a313df7a5f692e0b4a9509ad" args="()" -->
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<td class="memname">void lcd_strobe </td>
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<p>
Generates the strobe signal for writing data.
<p>
This function is meant for internal usage only.
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<a class="anchor" name="b69146a9179fc5b5deef3fc61cf0208c"></a><!-- doxytag: member="lc7981.h::lcd_write_command" ref="b69146a9179fc5b5deef3fc61cf0208c" args="(uint8_t cmd, uint8_t data)" -->
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<td class="memname">void lcd_write_command </td>
<td>(</td>
<td class="paramtype">uint8_t&nbsp;</td>
<td class="paramname"> <em>cmd</em>, </td>
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<td class="paramtype">uint8_t&nbsp;</td>
<td class="paramname"> <em>data</em></td><td>&nbsp;</td>
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<td></td><td></td><td width="100%"><code> [inline]</code></td>
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<p>
Writes a command and a data byte to the lcd.
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<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>cmd</em>&nbsp;</td><td>the command byte </td></tr>
<tr><td valign="top"></td><td valign="top"><em>data</em>&nbsp;</td><td>the data that is going to be written after the command </td></tr>
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<a class="anchor" name="30251238a49999658455fdb0233757fb"></a><!-- doxytag: member="lc7981.h::lcd_write_text" ref="30251238a49999658455fdb0233757fb" args="(char *txt)" -->
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<td class="memname">void lcd_write_text </td>
<td>(</td>
<td class="paramtype">char *&nbsp;</td>
<td class="paramname"> <em>txt</em> </td>
<td>&nbsp;)&nbsp;</td>
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<hr size="1"><address style="text-align: right;"><small>Generated on Sat May 16 13:46:33 2009 for glcd by&nbsp;
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