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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>RoboLib: Display</title>
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<div id="projectname">RoboLib
 <span id="projectnumber">1.0</span>
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<div class="textblock"><p><b> file </b> <br />
robolib/display.h</p>
<p><b> description </b> <br />
The display modul contains functions for printing data to a Display.</p>
<p>The functions work with standard displays using the KS0070B controller.</p>
<p>The controller is initalized to use two or four lines and 5x7 dots for each character.</p>
<p>There will be no automatic linebreak check at the end of a display line. Due to the internal memory of the display line 0 relates to address 0x00-0x0F and display line 1 relates to address 0x40-0x4F.</p>
<p>The port connected to the control pins (RS, RW, E) will be set to PORTA if the preprocessor switch DISPLAY_PORTx is not set to an other value.</p>
<p>The pin number connected to the enable-signal will be set to pin 4 if the preprocessor switch DISPLAY_PIN_E is not set to an other value.</p>
<p>The pin number connected to the RS-signal will be set to pin 5 if the preprocessor switch DISPLAY_PIN_RS is not set to an other value.</p>
<p>The pin number connected to the RW-signal will be set to pin 6 if the preprocessor switch DISPLAY_PIN_RW is not set to an other value.</p>
<p>The port connected to the data pins 4-7 will be set to the same port as the control pins if the preprocessor switch DISPLAY_DATA_PORTx is not set to an other value.</p>
<p>The data pins 4-7 will be set to the pins 0-3 of the data port if the preprocessor switch DISPLAY_DATA_HI is not set. Otherwise the data pins 4-7 are set to pins 4-7.</p>
<p><b> dependencies </b> <br />
This modul depends on the following modules: <br />
</p><ul>
<li>string modul (robolib/string.h)</li>
<li>delay modul (robolib/delay.h)</li>
</ul>
<p>It uses the the following macros: <br />
</p><ul>
<li>DISPLAY_PORT (defaults to A (for PORTA) if not used)</li>
<li>DISPLAY_PIN_RS (defaults to 5 if not used)</li>
<li>DISPLAY_PIN_RW (defaults to 6 if not used)</li>
<li>DISPLAY_PIN_E (defaults to 4 if not used)</li>
<li>DISPLAY_DATA_PORT (defaults to DISPLAY_PORT if not used)</li>
<li>DISPLAY_DATA_HI</li>
</ul>
<p><b> example </b> <br />
Here is an examples for the overall usage:</p><ul>
<li><a class="el" href="display_2display_8c-example.html">display/display.c</a> </li>
</ul>
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