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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: nrf24l01.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>nrf24l01.c</h1><a href="nrf24l01_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: nrf24l01.c</span><a name="l00003"></a>00003 <span class="comment"> * Purpose: nRF24L01 handler 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: 2007-10-14 11:29:32</span><a name="l00007"></a>00007 <span class="comment"> * Last modify: 2007-10-21 11:50:26 ivanovp {Time-stamp}</span><a name="l00008"></a>00008 <span class="comment"> * Copyright: (C) Peter Ivanov, 2007</span><a name="l00009"></a>00009 <span class="comment"> * Licence: GPL</span><a name="l00010"></a>00010 <span class="comment"> */</span><a name="l00019"></a>00019 <span class="preprocessor">#include <msp430xG461x.h></span><a name="l00020"></a>00020 <span class="preprocessor">#include "<a class="code" href="nrf24l01_8h.html">nrf24l01.h</a>"</span><a name="l00021"></a>00021 <span class="preprocessor">#include "<a class="code" href="time_8h.html">time.h</a>"</span><a name="l00022"></a>00022 <span class="preprocessor">#include "<a class="code" href="lcd_8h.html">lcd.h</a>"</span><a name="l00023"></a>00023 <a name="l00024"></a><a class="code" href="nrf24l01_8c.html#1ee449e13353fa96f1d8c600b1a0b104">00024</a> <span class="preprocessor">#define CSN_TIME 2</span><a name="l00025"></a><a class="code" href="nrf24l01_8c.html#2b4ea422141e26b91359dc29deb3c847">00025</a> <span class="preprocessor"></span><span class="preprocessor">#define CE_HIGH_TIME 10000</span><a name="l00026"></a>00026 <span class="preprocessor"></span><a name="l00028"></a><a class="code" href="nrf24l01_8c.html#713aeff525b77ebec6a0bd0067e94899">00028</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="nrf24l01_8c.html#713aeff525b77ebec6a0bd0067e94899">RX_ADDRESS_P0</a>[5] = {5,6,7,8,9};<a name="l00030"></a><a class="code" href="nrf24l01_8c.html#8c2490e789bd3a76ef4e5f56367c1344">00030</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="nrf24l01_8c.html#8c2490e789bd3a76ef4e5f56367c1344">RX_ADDRESS_P1</a>[5] = {0,1,2,3,4};<a name="l00032"></a><a class="code" href="nrf24l01_8c.html#dd5a3afac408f7f5cd5fa4258e50c7a3">00032</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="nrf24l01_8c.html#dd5a3afac408f7f5cd5fa4258e50c7a3">TX_ADDRESS</a>[5] = {5,6,7,8,9};<a name="l00033"></a><a class="code" href="nrf24l01_8c.html#c25c5572fcf926cadf10dc39c5e4ba28">00033</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="nrf24l01_8c.html#c25c5572fcf926cadf10dc39c5e4ba28">ADDRESS</a>[5];<a name="l00034"></a>00034 <a name="l00035"></a><a class="code" href="nrf24l01_8c.html#54849a1c58ce64ba16a055ad9555a027">00035</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="nrf24l01_8c.html#54849a1c58ce64ba16a055ad9555a027">status</a>;<a name="l00036"></a>00036 <a name="l00042"></a><a class="code" href="nrf24l01_8c.html#82350a7ddeb8d1e50d6375b520114a9a">00042</a> <span class="keywordtype">void</span> <a class="code" href="nrf24l01_8c.html#82350a7ddeb8d1e50d6375b520114a9a">Delay</a> (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> a)<a name="l00043"></a>00043 { <a name="l00044"></a>00044 <span class="keywordflow">while</span> (--a != 0); <a name="l00045"></a>00045 }<a name="l00046"></a>00046 <a name="l00050"></a><a class="code" href="nrf24l01_8c.html#a1524daee320c91b750c08cd1b2e0766">00050</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="nrf24l01_8c.html#a1524daee320c91b750c08cd1b2e0766">CSN_HIGH</a> (<span class="keywordtype">void</span>)<a name="l00051"></a>00051 {<a name="l00052"></a>00052 P8OUT |= BIT3; <span class="comment">// P8.3 HIGH</span><a name="l00053"></a>00053 }<a name="l00054"></a>00054 <a name="l00058"></a><a class="code" href="nrf24l01_8c.html#3a1123d2eede99fdf677f173602826ee">00058</a> <span class="keywordtype">void</span> <a class="code" href="nrf24l01_8c.html#3a1123d2eede99fdf677f173602826ee">CSN_LOW</a> (<span class="keywordtype">void</span>)<a name="l00059"></a>00059 { <a name="l00060"></a>00060 <a class="code" href="nrf24l01_8c.html#82350a7ddeb8d1e50d6375b520114a9a">Delay</a> (<a class="code" href="nrf24l01_8c.html#1ee449e13353fa96f1d8c600b1a0b104">CSN_TIME</a>);<a name="l00061"></a>00061 P8OUT &= ~BIT3; <span class="comment">// P8.3 LOW</span><a name="l00062"></a>00062 }<a name="l00063"></a>00063 <a name="l00067"></a><a class="code" href="nrf24l01_8c.html#46de8521b533215eafef482a6dee9a7d">00067</a> <span class="keywordtype">void</span> <a class="code" href="nrf24l01_8c.html#46de8521b533215eafef482a6dee9a7d">CE_HIGH</a>(<span class="keywordtype">void</span>)<a name="l00068"></a>00068 { <a name="l00069"></a>00069 P8OUT |= BIT4; <span class="comment">// P8.4 HIGH</span><a name="l00070"></a>00070 <a class="code" href="nrf24l01_8c.html#82350a7ddeb8d1e50d6375b520114a9a">Delay</a> (<a class="code" href="nrf24l01_8c.html#2b4ea422141e26b91359dc29deb3c847">CE_HIGH_TIME</a>); <a name="l00071"></a>00071 }<a name="l00072"></a>00072 <a name="l00076"></a><a class="code" href="nrf24l01_8c.html#2e2fcc38fc7a1cbb847a00bf8bb59d18">00076</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="nrf24l01_8c.html#2e2fcc38fc7a1cbb847a00bf8bb59d18">CE_LOW</a>(<span class="keywordtype">void</span>)<a name="l00077"></a>00077 {<a name="l00078"></a>00078 P8OUT &= ~BIT4; <span class="comment">// P8.4 LOW</span><a name="l00079"></a>00079 }<a name="l00080"></a>00080 <a name="l00087"></a><a class="code" href="nrf24l01_8c.html#6b137ec6ccdeb9cd7c3ff97fc2f57247">00087</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="nrf24l01_8c.html#6b137ec6ccdeb9cd7c3ff97fc2f57247">SPI_SendByte</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> data)<a name="l00088"></a>00088 {<a name="l00089"></a>00089 <span class="keywordflow">while</span> ((IFG2 & UCA0TXIFG) == 0); <span class="comment">// wait while not ready / for RX</span><a name="l00090"></a>00090 UCA0TXBUF = data; <span class="comment">// write</span><a name="l00091"></a>00091 <span class="keywordflow">while</span> ((IFG2 & UCA0RXIFG) == 0); <span class="comment">// wait for RX buffer (full)</span><a name="l00092"></a>00092 <span class="keywordflow">return</span> (UCA0RXBUF);<a name="l00093"></a>00093 }<a name="l00094"></a>00094 <a name="l00103"></a><a class="code" href="nrf24l01_8c.html#af5c055cad67312ebfb0361c281cbd34">00103</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="nrf24l01_8c.html#af5c055cad67312ebfb0361c281cbd34">SPI_Send_command_with_ADDR</a> (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> cmd, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> addr, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> data_byte)<a name="l00104"></a>00104 {<a name="l00105"></a>00105 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> temp,command = 0;<a name="l00106"></a>00106 <span class="keywordtype">int</span> j, k;<a name="l00107"></a>00107 command = (cmd << 5) | addr;<a name="l00108"></a>00108 <a class="code" href="nrf24l01_8c.html#3a1123d2eede99fdf677f173602826ee">CSN_LOW</a>();<a name="l00109"></a>00109 <span class="keywordflow">if</span> (cmd == <a class="code" href="nrf24l01_8h.html#fb0b251378d3b14c508e51fd2c3157d6">R_REGISTER</a>)<a name="l00110"></a>00110 {<a name="l00111"></a>00111 <span class="keywordflow">if</span> (addr == <a class="code" href="nrf24l01_8h.html#dc82a1b0dee303d8b783b9b9a89ae5aa">RX_ADDR_P0</a> || addr == <a class="code" href="nrf24l01_8h.html#d4b44f18e4b27b07af84783d8f11726d">RX_ADDR_P1</a> || addr == <a class="code" href="nrf24l01_8h.html#a734c6e08b9f794436eacbabe466a6c4">TX_ADDR</a>)<a name="l00112"></a>00112 {<a name="l00113"></a>00113 <a name="l00114"></a>00114 <a class="code" href="nrf24l01_8c.html#54849a1c58ce64ba16a055ad9555a027">status</a> = <a class="code" href="nrf24l01_8c.html#6b137ec6ccdeb9cd7c3ff97fc2f57247">SPI_SendByte</a>(command);<a name="l00115"></a>00115 <span class="keywordflow">for</span> (k = 0; k < 5; k++)<a name="l00116"></a>00116 {<a name="l00117"></a>00117 <a class="code" href="nrf24l01_8c.html#c25c5572fcf926cadf10dc39c5e4ba28">ADDRESS</a>[k] = <a class="code" href="nrf24l01_8c.html#6b137ec6ccdeb9cd7c3ff97fc2f57247">SPI_SendByte</a>(<a class="code" href="nrf24l01_8h.html#7b5a6dc6c173a198aedd1eb7808d6992">NRF_NOP</a>);<a name="l00118"></a>00118 }<a name="l00119"></a>00119 <a class="code" href="nrf24l01_8c.html#a1524daee320c91b750c08cd1b2e0766">CSN_HIGH</a>();<a name="l00120"></a>00120 <span class="keywordflow">return</span> <a class="code" href="nrf24l01_8c.html#54849a1c58ce64ba16a055ad9555a027">status</a>;<a name="l00121"></a>00121 }<a name="l00122"></a>00122 <span class="keywordflow">else</span><a name="l00123"></a>00123 {<a name="l00124"></a>00124 <a class="code" href="nrf24l01_8c.html#54849a1c58ce64ba16a055ad9555a027">status</a> = <a class="code" href="nrf24l01_8c.html#6b137ec6ccdeb9cd7c3ff97fc2f57247">SPI_SendByte</a>(command);<a name="l00125"></a>00125 temp = <a class="code" href="nrf24l01_8c.html#6b137ec6ccdeb9cd7c3ff97fc2f57247">SPI_SendByte</a>(<a class="code" href="nrf24l01_8h.html#7b5a6dc6c173a198aedd1eb7808d6992">NRF_NOP</a>);<a name="l00126"></a>00126 <a class="code" href="nrf24l01_8c.html#a1524daee320c91b750c08cd1b2e0766">CSN_HIGH</a>();<a name="l00127"></a>00127 <span class="keywordflow">return</span> temp;<a name="l00128"></a>00128 }<a name="l00129"></a>00129 }<a name="l00130"></a>00130 <span class="keywordflow">if</span> (cmd == <a class="code" href="nrf24l01_8h.html#3b68b214d5753039d2c156ad57cd7153">W_REGISTER</a>)<a name="l00131"></a>00131 {<a name="l00132"></a>00132 <span class="keywordflow">if</span> (addr == <a class="code" href="nrf24l01_8h.html#dc82a1b0dee303d8b783b9b9a89ae5aa">RX_ADDR_P0</a>)<a name="l00133"></a>00133 {⌨️ 快捷键说明
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