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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>Procyon ARMlib-LPC2100: ad6620.c Source File</title><link href="dox.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.3.6 --><div class="qindex"><a class="qindex" href="main.html">Main Page</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="globals.html">Globals</a></div><h1>ad6620.c</h1><a href="ad6620_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <span class="comment">/*! \file ad6620.c \brief Analog Devices AD6620 Digital Receiver Driver. */</span>00002 <span class="comment">//*****************************************************************************</span>00003 <span class="comment">//</span>00004 <span class="comment">// File Name : 'ad6620.c'</span>00005 <span class="comment">// Title : Analog Devices AD6620 Digital Receiver Driver</span>00006 <span class="comment">// Author : Pascal Stang - Copyright (C) 2004</span>00007 <span class="comment">// Created : 2004.07.08</span>00008 <span class="comment">// Revised : 2004.07.12</span>00009 <span class="comment">// Version : 0.1</span>00010 <span class="comment">// Target MCU : ARM processors</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">#include "lpc210x.h"</span>00023 00024 <span class="preprocessor">#include "<a class="code" href="global_8h.html">global.h</a>"</span>00025 <span class="preprocessor">#include "<a class="code" href="timer_8h.html">timer.h</a>"</span>00026 <span class="preprocessor">#include "<a class="code" href="membus_8h.html">membus.h</a>"</span>00027 <span class="preprocessor">#include "<a class="code" href="rprintf_8h.html">rprintf.h</a>"</span>00028 <span class="preprocessor">#include "<a class="code" href="ad6620_8h.html">ad6620.h</a>"</span>00029 00030 <span class="comment">// global variables</span>00031 00032 <span class="keywordtype">void</span> ad6620Init(<span class="keywordtype">void</span>)00033 {00034 membusInit();00035 00036 <span class="comment">// reset device</span>00037 <span class="comment">//IOSET = AD9854_RESET;</span>00038 <span class="comment">//IODIR |= AD9854_RESET;</span>00039 <span class="comment">//delay(10000);</span>00040 <span class="comment">//IOCLR = AD9854_RESET;</span>00041 00042 <span class="comment">// initialize registers</span>00043 00044 <span class="comment">// initialize receiver - set soft reset</span>00045 ad6620WriteReg(AD6620_REG_MODE_CTRL, 0x01);00046 <span class="comment">// set NCO</span>00047 ad6620WriteReg(AD6620_REG_NCO_SYNC, 0);00048 ad6620WriteReg(AD6620_REG_NCO_PHASE, 0);00049 ad6620WriteReg(AD6620_REG_NCO_FREQ, 0);00050 <span class="comment">// set CIC2 filter</span>00051 ad6620WriteReg(AD6620_REG_CIC2_SCALE, 1);00052 ad6620WriteReg(AD6620_REG_CIC2_DECIM, 4-1);00053 <span class="comment">// set CIC5 filter</span>00054 ad6620WriteReg(AD6620_REG_CIC5_SCALE, 1);00055 ad6620WriteReg(AD6620_REG_CIC5_DECIM, 10-1);00056 <span class="comment">// set RCF filter</span>00057 ad6620WriteReg(AD6620_REG_RCF_CTRL, 1);00058 ad6620WriteReg(AD6620_REG_RCF_DECIM, 52-1);00059 ad6620WriteReg(AD6620_REG_RCFADDR_OFS, 0);00060 ad6620WriteReg(AD6620_REG_RCF_TAPS, 52-1);00061 <span class="comment">// set reserved register to zero</span>00062 ad6620WriteReg(AD6620_REG_RESERVED, 0x00);00063 <span class="comment">// initialize receiver - set operation mode</span>00064 ad6620WriteReg(AD6620_REG_MODE_CTRL, 0x08);00065 00066 }00067 00068 <span class="keywordtype">void</span> ad6620WriteReg(u16 reg, u32 data)00069 {00070 <span class="comment">// write address</span>00071 membusWrite(AD6620_REG_BASE+AD6620_REG_AMR, reg>>8);00072 membusRead(0);00073 membusWrite(AD6620_REG_BASE+AD6620_REG_LAR, reg);00074 membusRead(0);00075 <span class="comment">// write value</span>00076 membusWrite(AD6620_REG_BASE+AD6620_REG_DR3, data>>24);00077 membusRead(0);00078 membusWrite(AD6620_REG_BASE+AD6620_REG_DR2, data>>16);00079 membusRead(0);00080 membusWrite(AD6620_REG_BASE+AD6620_REG_DR1, data>>8);00081 membusRead(0);00082 membusWrite(AD6620_REG_BASE+AD6620_REG_DR0, data);00083 membusRead(0);00084 }00085 00086 00087 u32 ad6620ReadReg(u16 reg)00088 {00089 u32 data;00090 <span class="comment">// write address</span>00091 membusWrite(AD6620_REG_BASE+AD6620_REG_AMR, reg>>8);00092 membusRead(0);00093 membusWrite(AD6620_REG_BASE+AD6620_REG_LAR, reg);00094 membusRead(0);00095 <span class="comment">// read value</span>00096 data = (membusRead(AD6620_REG_BASE+AD6620_REG_DR0) & 0x000000FF);00097 membusRead(0);00098 data |= (membusRead(AD6620_REG_BASE+AD6620_REG_DR1) & 0x000000FF)<<8;00099 membusRead(0);00100 data |= (membusRead(AD6620_REG_BASE+AD6620_REG_DR2) & 0x000000FF)<<16;00101 membusRead(0);00102 data |= (membusRead(AD6620_REG_BASE+AD6620_REG_DR3) & 0x000000FF)<<24;00103 membusRead(0);00104 <span class="keywordflow">return</span> data;00105 }00106 00107 <span class="keywordtype">void</span> ad6620ShowRegisters(<span class="keywordtype">void</span>)00108 {00109 <span class="comment">// read and print all registers</span>00110 00111 <a class="code" href="rprintf_8h.html#a8">rprintfStr</a>(<span class="stringliteral">"Mode Control : "</span>);00112 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ad6620ReadReg(AD6620_REG_MODE_CTRL));00113 <a class="code" href="rprintf_8c.html#a10">rprintfCRLF</a>();00114 00115 <a class="code" href="rprintf_8h.html#a8">rprintfStr</a>(<span class="stringliteral">"NCO Control : "</span>);00116 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ad6620ReadReg(AD6620_REG_NCO_CTRL));00117 <a class="code" href="rprintf_8c.html#a10">rprintfCRLF</a>();00118 00119 <a class="code" href="rprintf_8h.html#a8">rprintfStr</a>(<span class="stringliteral">"NCO SYNC Control : "</span>);00120 <a class="code" href="rprintf_8h.html#a15">rprintfu32</a>(ad6620ReadReg(AD6620_REG_NCO_SYNC));00121 <a class="code" href="rprintf_8c.html#a10">rprintfCRLF</a>();00122 00123 <a class="code" href="rprintf_8h.html#a8">rprintfStr</a>(<span class="stringliteral">"NCO Frequency : "</span>);00124 <a class="code" href="rprintf_8h.html#a15">rprintfu32</a>(ad6620ReadReg(AD6620_REG_NCO_FREQ));00125 <a class="code" href="rprintf_8c.html#a10">rprintfCRLF</a>();00126 00127 <a class="code" href="rprintf_8h.html#a8">rprintfStr</a>(<span class="stringliteral">"NCO Phase Offset : "</span>);00128 <a class="code" href="rprintf_8h.html#a14">rprintfu16</a>(ad6620ReadReg(AD6620_REG_NCO_PHASE));00129 <a class="code" href="rprintf_8c.html#a10">rprintfCRLF</a>();00130 00131 <a class="code" href="rprintf_8h.html#a8">rprintfStr</a>(<span class="stringliteral">"INPUT/CIC2 Scale : "</span>);00132 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ad6620ReadReg(AD6620_REG_CIC2_SCALE));00133 <a class="code" href="rprintf_8c.html#a10">rprintfCRLF</a>();00134 00135 <a class="code" href="rprintf_8h.html#a8">rprintfStr</a>(<span class="stringliteral">"CIC2 Decimation : "</span>);00136 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ad6620ReadReg(AD6620_REG_CIC2_DECIM));00137 <a class="code" href="rprintf_8c.html#a10">rprintfCRLF</a>();00138 00139 <a class="code" href="rprintf_8h.html#a8">rprintfStr</a>(<span class="stringliteral">"CIC5 Scale : "</span>);00140 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ad6620ReadReg(AD6620_REG_CIC5_SCALE));00141 <a class="code" href="rprintf_8c.html#a10">rprintfCRLF</a>();00142 00143 <a class="code" href="rprintf_8h.html#a8">rprintfStr</a>(<span class="stringliteral">"CIC5 Decimation : "</span>);00144 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ad6620ReadReg(AD6620_REG_CIC5_DECIM));00145 <a class="code" href="rprintf_8c.html#a10">rprintfCRLF</a>();00146 00147 <a class="code" href="rprintf_8h.html#a8">rprintfStr</a>(<span class="stringliteral">"OUTPUT/RCF Control: "</span>);00148 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ad6620ReadReg(AD6620_REG_RCF_CTRL));00149 <a class="code" href="rprintf_8c.html#a10">rprintfCRLF</a>();00150 00151 <a class="code" href="rprintf_8h.html#a8">rprintfStr</a>(<span class="stringliteral">"RCF Decimation : "</span>);00152 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ad6620ReadReg(AD6620_REG_RCF_DECIM));00153 <a class="code" href="rprintf_8c.html#a10">rprintfCRLF</a>();00154 00155 <a class="code" href="rprintf_8h.html#a8">rprintfStr</a>(<span class="stringliteral">"RCF Address Offset: "</span>);00156 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ad6620ReadReg(AD6620_REG_RCFADDR_OFS));00157 <a class="code" href="rprintf_8c.html#a10">rprintfCRLF</a>();00158 00159 <a class="code" href="rprintf_8h.html#a8">rprintfStr</a>(<span class="stringliteral">"RCF Taps : "</span>);00160 <a class="code" href="rprintf_8h.html#a13">rprintfu08</a>(ad6620ReadReg(AD6620_REG_RCF_TAPS));00161 <a class="code" href="rprintf_8c.html#a10">rprintfCRLF</a>();00162 }00163 </pre></div><hr size="1"><address style="align: right;"><small>Generated on Tue Jul 13 03:38:11 2004 for Procyon ARMlib-LPC2100 by<a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border=0 > </a>1.3.6 </small></address></body></html>⌨️ 快捷键说明
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