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<h1>glcd.c</h1><a href="glcd_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment">00001 <span class="comment">/*! \file glcd.c \brief Graphic LCD API functions. */</span>
00002 <span class="comment">//*****************************************************************************</span>
00003 <span class="comment">//</span>
00004 <span class="comment">// File Name : 'glcd.c'</span>
00005 <span class="comment">// Title : Graphic LCD API functions</span>
00006 <span class="comment">// Author : Pascal Stang - Copyright (C) 2002</span>
00007 <span class="comment">// Date : 5/30/2002</span>
00008 <span class="comment">// Revised : 5/30/2002</span>
00009 <span class="comment">// Version : 0.5</span>
00010 <span class="comment">// Target MCU : Atmel AVR</span>
00011 <span class="comment">// Editor Tabs : 4</span>
00012 <span class="comment">//</span>
00013 <span class="comment">// NOTE: This code is currently below version 1.0, and therefore is considered</span>
00014 <span class="comment">// to be lacking in some functionality or documentation, or may not be fully</span>
00015 <span class="comment">// tested. Nonetheless, you can expect most functions to work.</span>
00016 <span class="comment">//</span>
00017 <span class="comment">// This code is distributed under the GNU Public License</span>
00018 <span class="comment">// which can be found at http://www.gnu.org/licenses/gpl.txt</span>
00019 <span class="comment">//</span>
00020 <span class="comment">//*****************************************************************************</span>
00021
00022 <span class="preprocessor">#ifndef WIN32</span>
00023 <span class="preprocessor"></span><span class="comment">// AVR specific includes</span>
00024 <span class="preprocessor"> #include <avr/io.h></span>
00025 <span class="preprocessor"> #include <avr/pgmspace.h></span>
00026 <span class="preprocessor">#endif</span>
00027 <span class="preprocessor"></span>
00028 <span class="preprocessor">#include "<a class="code" href="glcd_8h.html">glcd.h</a>"</span>
00029
00030 <span class="comment">// include hardware support</span>
00031 <span class="preprocessor">#include "<a class="code" href="ks0108_8h.html">ks0108.h</a>"</span>
00032 <span class="comment">// include fonts</span>
00033 <span class="preprocessor">#include "<a class="code" href="font5x7_8h.html">font5x7.h</a>"</span>
00034 <span class="preprocessor">#include "<a class="code" href="fontgr_8h.html">fontgr.h</a>"</span>
00035
00036 <span class="comment">// graphic routines</span>
00037
00038 <span class="comment">// set dot</span>
<a name="l00039"></a><a class="code" href="glcd_8h.html#a10">00039</a> <span class="keywordtype">void</span> <a class="code" href="glcd_8c.html#a0">glcdSetDot</a>(u08 x, u08 y)
00040 {
00041 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> temp;
00042
00043 <a class="code" href="ks0108_8c.html#a15">glcdSetAddress</a>(x, y/8);
00044 temp = glcdDataRead(); <span class="comment">// dummy read</span>
00045 temp = glcdDataRead(); <span class="comment">// read back current value</span>
00046 <a class="code" href="ks0108_8c.html#a15">glcdSetAddress</a>(x, y/8);
00047 glcdDataWrite(temp | (1 << (y % 8)));
00048
00049 <a class="code" href="ks0108_8c.html#a14">glcdStartLine</a>(0);
00050 }
00051
00052 <span class="comment">// clear dot</span>
<a name="l00053"></a><a class="code" href="glcd_8h.html#a11">00053</a> <span class="keywordtype">void</span> <a class="code" href="glcd_8c.html#a1">glcdClearDot</a>(u08 x, u08 y)
00054 {
00055 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> temp;
00056
00057 <a class="code" href="ks0108_8c.html#a15">glcdSetAddress</a>(x, y/8);
00058 temp = glcdDataRead(); <span class="comment">// dummy read</span>
00059 temp = glcdDataRead(); <span class="comment">// read back current value</span>
00060 <a class="code" href="ks0108_8c.html#a15">glcdSetAddress</a>(x, y/8);
00061 glcdDataWrite(temp & ~(1 << (y % 8)));
00062
00063 <a class="code" href="ks0108_8c.html#a14">glcdStartLine</a>(0);
00064 }
00065
00066 <span class="comment">// draw line</span>
<a name="l00067"></a><a class="code" href="glcd_8h.html#a12">00067</a> <span class="keywordtype">void</span> <a class="code" href="glcd_8c.html#a2">glcdLine</a>(u08 x1, u08 y1, u08 x2, u08 y2)
00068 {
00069 };
00070
00071 <span class="comment">// draw rectangle</span>
<a name="l00072"></a><a class="code" href="glcd_8h.html#a13">00072</a> <span class="keywordtype">void</span> <a class="code" href="glcd_8c.html#a3">glcdRectangle</a>(u08 x, u08 y, u08 a, u08 b)
00073 {
00074 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> j;
00075
00076 <span class="keywordflow">for</span> (j = 0; j < a; j++) {
00077 <a class="code" href="glcd_8c.html#a0">glcdSetDot</a>(x, y + j);
00078 <a class="code" href="glcd_8c.html#a0">glcdSetDot</a>(x + b - 1, y + j);
00079 }
00080 <span class="keywordflow">for</span> (j = 0; j < b; j++) {
00081 <a class="code" href="glcd_8c.html#a0">glcdSetDot</a>(x + j, y);
00082 <a class="code" href="glcd_8c.html#a0">glcdSetDot</a>(x + j, y + a - 1);
00083 }
00084 }
00085
00086 <span class="comment">// draw circle</span>
<a name="l00087"></a><a class="code" href="glcd_8h.html#a14">00087</a> <span class="keywordtype">void</span> <a class="code" href="glcd_8c.html#a4">glcdCircle</a>(u08 xcenter, u08 ycenter, u08 radius)
00088 {
00089 <span class="keywordtype">int</span> tswitch, y, x = 0;
00090 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> d;
00091
00092 d = ycenter - xcenter;
00093 y = radius;
00094 tswitch = 3 - 2 * radius;
00095 <span class="keywordflow">while</span> (x <= y) {
00096 <a class="code" href="glcd_8c.html#a0">glcdSetDot</a>(xcenter + x, ycenter + y); <a class="code" href="glcd_8c.html#a0">glcdSetDot</a>(xcenter + x, ycenter - y);
00097 <a class="code" href="glcd_8c.html#a0">glcdSetDot</a>(xcenter - x, ycenter + y); <a class="code" href="glcd_8c.html#a0">glcdSetDot</a>(xcenter - x, ycenter - y);
00098 <a class="code" href="glcd_8c.html#a0">glcdSetDot</a>(ycenter + y - d, ycenter + x); <a class="code" href="glcd_8c.html#a0">glcdSetDot</a>(ycenter + y - d, ycenter - x);
00099 <a class="code" href="glcd_8c.html#a0">glcdSetDot</a>(ycenter - y - d, ycenter + x); <a class="code" href="glcd_8c.html#a0">glcdSetDot</a>(ycenter - y - d, ycenter - x);
00100
00101 <span class="keywordflow">if</span> (tswitch < 0) tswitch += (4 * x + 6);
00102 <span class="keywordflow">else</span> {
00103 tswitch += (4 * (x - y) + 10);
00104 y--;
00105 }
00106 x++;
00107 }
00108 }
00109
00110 <span class="comment">// text routines</span>
00111
00112 <span class="comment">// write a character at the current position</span>
<a name="l00113"></a><a class="code" href="glcd_8h.html#a15">00113</a> <span class="keywordtype">void</span> <a class="code" href="glcd_8c.html#a5">glcdWriteChar</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> c)
00114 {
00115 u08 i = 0;
00116
00117 <span class="keywordflow">for</span>(i=0; i<5; i++)
00118 {
00119 glcdDataWrite(pgm_read_byte(&Font5x7[((c - 0x20) * 5) + i]));
00120 }
00121
00122 <span class="comment">// write a spacer line</span>
00123 glcdDataWrite(0x00);
00124 <span class="comment">// unless we're at the end of the display</span>
00125 <span class="comment">//if(xx == 128)</span>
00126 <span class="comment">// xx = 0;</span>
00127 <span class="comment">//else </span>
00128 <span class="comment">// glcdWriteData(0x00);</span>
00129
00130 <span class="comment">//cbi(GLCD_Control, GLCD_CS1);</span>
00131 <span class="comment">//cbi(GLCD_Control, GLCD_CS2);</span>
00132 <a class="code" href="ks0108_8c.html#a14">glcdStartLine</a>(0);
00133 }
00134
<a name="l00135"></a><a class="code" href="glcd_8h.html#a16">00135</a> <span class="keywordtype">void</span> <a class="code" href="glcd_8c.html#a6">glcdWriteCharGr</a>(u08 grCharIdx)
00136 {
00137 u08 idx;
00138 u08 grLength;
00139 u08 grStartIdx = 0;
00140
00141 <span class="comment">// get starting index of graphic bitmap</span>
00142 <span class="keywordflow">for</span>(idx=0; idx<grCharIdx; idx++)
00143 {
00144 <span class="comment">// add this graphic's length to the startIdx</span>
00145 <span class="comment">// to get the startIdx of the next one</span>
00146 grStartIdx += pgm_read_byte(FontGr+grStartIdx);
00147 }
00148 grLength = pgm_read_byte(FontGr+grStartIdx);
00149
00150 <span class="comment">// write the lines of the desired graphic to the display</span>
00151 <span class="keywordflow">for</span>(idx=0; idx<grLength; idx++)
00152 {
00153 <span class="comment">// write the line</span>
00154 glcdDataWrite(pgm_read_byte(FontGr+(grStartIdx+1)+idx));
00155 }
00156 }
00157
00158 <span class="keywordtype">void</span> glcdPutStr(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *data)
00159 {
00160 <span class="keywordflow">while</span> (*data) {
00161 <a class="code" href="glcd_8c.html#a5">glcdWriteChar</a>(*data);
00162 data++;
00163 }
00164 }
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Sun Oct 29 03:41:06 2006 for Procyon AVRlib by
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