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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Sample MSP430-4619LCD Project: irda.c Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.5.1 --><div class="tabs"> <ul> <li><a href="main.html"><span>Main Page</span></a></li> <li><a href="annotated.html"><span>Data Structures</span></a></li> <li id="current"><a href="files.html"><span>Files</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="files.html"><span>File List</span></a></li> <li><a href="globals.html"><span>Globals</span></a></li> </ul></div><h1>irda.c</h1><a href="irda_8c.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"> * File: irda.c</span><a name="l00003"></a>00003 <span class="comment"> * Purpose: IRDA handling functions</span><a name="l00004"></a>00004 <span class="comment"> * Author: Peter Ivanov, Olimex Ltd.</span><a name="l00005"></a>00005 <span class="comment"> * Modified by:</span><a name="l00006"></a>00006 <span class="comment"> * Created: 2007-05-19 11:29:32</span><a name="l00007"></a>00007 <span class="comment"> * Last modify: 2007-06-10 12:24:59 ivanovp {Time-stamp}</span><a name="l00008"></a>00008 <span class="comment"> * Copyright: (C) Peter Ivanov, Olimex Ltd., 2007</span><a name="l00009"></a>00009 <span class="comment"> * Licence: GPL</span><a name="l00010"></a>00010 <span class="comment"> */</span><a name="l00016"></a>00016 <span class="preprocessor">#include <msp430xG461x.h></span><a name="l00017"></a>00017 <span class="preprocessor">#include "<a class="code" href="irda_8h.html">irda.h</a>"</span><a name="l00018"></a>00018 <a name="l00019"></a><a class="code" href="irda_8h.html#6a5e2ebd1e802a98f67f2c79fd06a8aa">00019</a> <span class="keywordtype">void</span> <a class="code" href="irda_8c.html#6a5e2ebd1e802a98f67f2c79fd06a8aa">InitUCA_UART</a>(<span class="keywordtype">void</span>) <a name="l00020"></a>00020 {<a name="l00021"></a>00021 <a name="l00022"></a>00022 <span class="comment">// msb first, no parity, one stop, 8 bit</span><a name="l00023"></a>00023 UCA0CTL0 = 0x0;<a name="l00024"></a>00024 <a name="l00025"></a>00025 <span class="comment">// clock -> SMCLK</span><a name="l00026"></a>00026 UCA0CTL1 = UCSSEL1;<a name="l00027"></a>00027 <a name="l00028"></a>00028 <span class="comment">// Set 9600 baud rate</span><a name="l00029"></a>00029 <span class="comment">// UCBRx = 833</span><a name="l00030"></a>00030 <span class="comment">// UCBRSx = 2</span><a name="l00031"></a>00031 <span class="comment">// UCBRFx = 0</span><a name="l00032"></a>00032 <span class="comment">// SMCLK = 8 MHz</span><a name="l00033"></a>00033 UCA0BR0 = 0x41;<a name="l00034"></a>00034 UCA0BR1 = 0x03;<a name="l00035"></a>00035 UCA0MCTL = 0x04;<a name="l00036"></a>00036 <a name="l00037"></a>00037 <span class="comment">// Baud rate 115200</span><a name="l00038"></a>00038 <span class="comment">//UCA0BR0 = 0x45;</span><a name="l00039"></a>00039 <span class="comment">//UCA0BR1 = 0x00;</span><a name="l00040"></a>00040 <span class="comment">//UCA0MCTL = 0x04;</span><a name="l00041"></a>00041 <a name="l00042"></a>00042 <span class="comment">// Set 9600 baud rate</span><a name="l00043"></a>00043 <span class="comment">// UCBRx = 833</span><a name="l00044"></a>00044 <span class="comment">// UCBRSx = 2</span><a name="l00045"></a>00045 <span class="comment">// UCBRFx = 0</span><a name="l00046"></a>00046 <span class="comment">// SMCLK = 2 MHz</span><a name="l00047"></a>00047 <span class="comment">// UCA0BR0 = /*must to calculate*/0x00; </span><a name="l00048"></a>00048 <span class="comment">// UCA0BR1 = /*must to calculate*/0x00; </span><a name="l00049"></a>00049 <span class="comment">// UCA0MCTL = /*must to calculate*/0x00;</span><a name="l00050"></a>00050 <a name="l00051"></a>00051 <a name="l00052"></a>00052 <a name="l00053"></a>00053 <span class="comment">// IrDA encoder/decoder enabled - pulse length 5</span><a name="l00054"></a>00054 UCA0IRTCTL = UCIREN + UCIRTXPL5;<a name="l00055"></a>00055 <a name="l00056"></a>00056 <span class="comment">// second functionality of pin</span><a name="l00057"></a>00057 P4SEL |= 0xc0; <span class="comment">// P4.6,47 UART option select</span><a name="l00058"></a>00058 P4DIR |= 0x40; <span class="comment">// P4.6 output direction</span><a name="l00059"></a>00059 <a name="l00060"></a>00060 <span class="comment">// P7.7 - as otuput</span><a name="l00061"></a>00061 P7SEL &= ~0x80; <span class="comment">// gpio</span><a name="l00062"></a>00062 P7DIR |= 0x80; <span class="comment">// output</span><a name="l00063"></a>00063 P7OUT |= 0x80; <span class="comment">// high/disable</span><a name="l00064"></a>00064 }<a name="l00065"></a>00065 <a name="l00066"></a><a class="code" href="irda_8c.html#92641f39af892beaace86cd6b285215f">00066</a> <span class="keywordtype">void</span> <a class="code" href="irda_8c.html#92641f39af892beaace86cd6b285215f">IRDAEnable</a>(<span class="keywordtype">void</span>) <a name="l00067"></a>00067 {<a name="l00068"></a>00068 <span class="comment">// P7.7 to low</span><a name="l00069"></a>00069 P7OUT &= ~0x80;<a name="l00070"></a>00070 }<a name="l00071"></a>00071 <a name="l00072"></a><a class="code" href="irda_8c.html#4c9983d11ed1df46b8afca856f361d76">00072</a> <span class="keywordtype">void</span> <a class="code" href="irda_8c.html#4c9983d11ed1df46b8afca856f361d76">IRDADisable</a>(<span class="keywordtype">void</span>) <a name="l00073"></a>00073 {<a name="l00074"></a>00074 <span class="comment">// P7.7 to high</span><a name="l00075"></a>00075 P7OUT |= 0x80;<a name="l00076"></a>00076 }<a name="l00077"></a>00077 <a name="l00078"></a><a class="code" href="irda_8h.html#0903f3bc64089b00e1221b8933ae092c">00078</a> <span class="keywordtype">void</span> <a class="code" href="irda_8c.html#0903f3bc64089b00e1221b8933ae092c">WriteByteUCA_UART</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> data) <a name="l00079"></a>00079 {<a name="l00080"></a>00080 <a name="l00081"></a>00081 <span class="comment">//while ((IFG2&UCA0TXIFG)==0); // wait while not ready</span><a name="l00082"></a>00082 <span class="keywordflow">while</span>(UCA0STAT&UCBUSY);<a name="l00083"></a>00083 UCA0TXBUF = data; <span class="comment">// write</span><a name="l00084"></a>00084 }<a name="l00085"></a>00085 <a name="l00086"></a><a class="code" href="irda_8h.html#3e6642f95e79df5847047d51a8fc8222">00086</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="irda_8c.html#3e6642f95e79df5847047d51a8fc8222">ReadByteUCA_UART</a>(<span class="keywordtype">void</span>) <a name="l00087"></a>00087 {<a name="l00088"></a>00088 <span class="comment">//while ((IFG2&UCA0RXIFG)==0); // wait for RX buffer (full)</span><a name="l00089"></a>00089 <span class="keywordflow">while</span>(UCA0STAT&UCBUSY);<a name="l00090"></a>00090 <span class="keywordflow">return</span> (UCA0RXBUF);<a name="l00091"></a>00091 }<a name="l00092"></a>00092 <a name="l00093"></a>00093 <a name="l00094"></a><a class="code" href="irda_8h.html#3e0b1589f06d7619fd2c38d7c5b2e957">00094</a> <span class="keywordtype">void</span> <a class="code" href="irda_8c.html#3e0b1589f06d7619fd2c38d7c5b2e957">InitIRDA</a>(<span class="keywordtype">void</span>)<a name="l00095"></a>00095 {<a name="l00096"></a>00096 <span class="comment">// init uart interface</span><a name="l00097"></a>00097 <a class="code" href="irda_8c.html#6a5e2ebd1e802a98f67f2c79fd06a8aa">InitUCA_UART</a>();<a name="l00098"></a>00098 <a name="l00099"></a>00099 <span class="comment">// enable module</span><a name="l00100"></a>00100 <a class="code" href="irda_8c.html#92641f39af892beaace86cd6b285215f">IRDAEnable</a>();<a name="l00101"></a>00101 }<a name="l00102"></a>00102 <a name="l00103"></a><a class="code" href="irda_8h.html#a275b1bf4f077edbec2fee7befbdcae0">00103</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="irda_8c.html#a275b1bf4f077edbec2fee7befbdcae0">TestIRDA</a>(<span class="keywordtype">void</span>)<a name="l00104"></a>00104 {<a name="l00105"></a>00105 <span class="comment">// This test is make with other board, which return echo via IRDA interface</span><a name="l00106"></a>00106 <a name="l00107"></a>00107 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> i;<a name="l00108"></a>00108 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> sample;<a name="l00109"></a>00109 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> success;<a name="l00110"></a>00110 <a name="l00111"></a>00111 sample = 32;<a name="l00112"></a>00112 success = 0;<a name="l00113"></a>00113 <a name="l00114"></a>00114 <a class="code" href="irda_8c.html#3e0b1589f06d7619fd2c38d7c5b2e957">InitIRDA</a>();<a name="l00115"></a>00115 <a name="l00116"></a>00116 <a name="l00117"></a>00117 <span class="keywordflow">for</span>(i=0; i<sample; i++) <a name="l00118"></a>00118 {<a name="l00119"></a>00119 <a name="l00120"></a>00120 <a class="code" href="irda_8c.html#0903f3bc64089b00e1221b8933ae092c">WriteByteUCA_UART</a>(0x55);<a name="l00121"></a>00121 <a name="l00122"></a>00122 <span class="keywordflow">if</span>(<a class="code" href="irda_8c.html#3e6642f95e79df5847047d51a8fc8222">ReadByteUCA_UART</a>() == 0x55) <a name="l00123"></a>00123 {<a name="l00124"></a>00124 success++;<a name="l00125"></a>00125 <span class="keywordflow">break</span>;<a name="l00126"></a>00126 }<a name="l00127"></a>00127 }<a name="l00128"></a>00128 <a name="l00129"></a>00129 <a name="l00130"></a>00130 <span class="keywordflow">for</span>(i=0; i<sample; i++) <a name="l00131"></a>00131 {<a name="l00132"></a>00132 <a name="l00133"></a>00133 <a class="code" href="irda_8c.html#0903f3bc64089b00e1221b8933ae092c">WriteByteUCA_UART</a>(0x11);<a name="l00134"></a>00134 <a name="l00135"></a>00135 <span class="keywordflow">if</span>(<a class="code" href="irda_8c.html#3e6642f95e79df5847047d51a8fc8222">ReadByteUCA_UART</a>() == 0x11) <a name="l00136"></a>00136 {<a name="l00137"></a>00137 success++;<a name="l00138"></a>00138 <span class="keywordflow">break</span>;<a name="l00139"></a>00139 }<a name="l00140"></a>00140 }<a name="l00141"></a>00141 <a name="l00142"></a>00142 <span class="keywordflow">for</span>(i=0; i<sample; i++) <a name="l00143"></a>00143 {<a name="l00144"></a>00144 <a class="code" href="irda_8c.html#0903f3bc64089b00e1221b8933ae092c">WriteByteUCA_UART</a>(0xA0);<a name="l00145"></a>00145 <a name="l00146"></a>00146 <span class="keywordflow">if</span>(<a class="code" href="irda_8c.html#3e6642f95e79df5847047d51a8fc8222">ReadByteUCA_UART</a>() == 0xA0) <a name="l00147"></a>00147 {<a name="l00148"></a>00148 success++;<a name="l00149"></a>00149 <span class="keywordflow">break</span>;<a name="l00150"></a>00150 }<a name="l00151"></a>00151 }<a name="l00152"></a>00152 <a name="l00153"></a>00153 <span class="keywordflow">for</span>(i=0; i<sample; i++) <a name="l00154"></a>00154 {<a name="l00155"></a>00155 <a name="l00156"></a>00156 <a class="code" href="irda_8c.html#0903f3bc64089b00e1221b8933ae092c">WriteByteUCA_UART</a>(0x66);<a name="l00157"></a>00157 <a name="l00158"></a>00158 <span class="keywordflow">if</span>(<a class="code" href="irda_8c.html#3e6642f95e79df5847047d51a8fc8222">ReadByteUCA_UART</a>() == 0x66) <a name="l00159"></a>00159 {<a name="l00160"></a>00160 success++;<a name="l00161"></a>00161 <span class="keywordflow">break</span>;<a name="l00162"></a>00162 }<a name="l00163"></a>00163 }<a name="l00164"></a>00164 <a name="l00165"></a>00165 <span class="keywordflow">if</span>(success == 4)<a name="l00166"></a>00166 <span class="keywordflow">return</span> 0;<a name="l00167"></a>00167 <span class="keywordflow">else</span><a name="l00168"></a>00168 <span class="keywordflow">return</span> 1;<a name="l00169"></a>00169 }<a name="l00170"></a>00170 </pre></div><hr size="1"><address style="align: right;"><small>Generated on Sun Oct 21 19:25:34 2007 for Sample MSP430-4619LCD Project by <a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.1 </small></address></body></html>⌨️ 快捷键说明
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