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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>VLSI Solution Oy Evaluation MP3 Player Source Code Documentation</title><link href="doxygen.css" rel="stylesheet" type="text/css"><img src="vlsi_small.gif" hspace="20" bordercolor="#ffffff" alt="VLSI Solution Oy"><b>VLSI Solution Oy Evaluation MP3 Player Source Code Documentation</b><p></p></head><body><!-- Generated by Doxygen 1.3.7 --><div class="qindex"><a class="qindex" href="index.html">Main Page</a> | <a class="qindex" href="annotated.html">Class List</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="functions.html">Class Members</a> | <a class="qindex" href="globals.html">File Members</a> | <a class="qindex" href="pages.html">Related Pages</a></div><h1>record.c</h1><a href="record_8c.html">Go to the documentation of this file.</a><pre class="fragment"><div>00001 00003 <span class="preprocessor">#include "<a class="code" href="record_8h.html">record.h</a>"</span>00004 <span class="preprocessor">#include "<a class="code" href="filesys_8h.html">filesys.h</a>"</span>00005 <span class="preprocessor">#include "<a class="code" href="storage_8h.html">storage.h</a>"</span>00006 <span class="preprocessor">#include "<a class="code" href="vs10xx_8h.html">vs10xx.h</a>"</span>00007 <span class="preprocessor">#include "console.h"</span>00008 <span class="preprocessor">#include "<a class="code" href="ui_8h.html">ui.h</a>"</span>00009 <span class="preprocessor">#include "<a class="code" href="display_8h.html">display.h</a>"</span>00010 00011 <a name="l00012"></a><a class="code" href="record_8c.html#a0">00012</a> <span class="keyword">extern</span> xdata <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="player_8c.html#a7">SPMax</a>;00013 <a name="l00015"></a><a class="code" href="record_8c.html#a1">00015</a> code <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="record_8c.html#a1">RIFFHeader0</a>[] = {00016 <span class="charliteral">'R'</span> , <span class="charliteral">'I'</span> , <span class="charliteral">'F'</span> , <span class="charliteral">'F'</span> , <span class="comment">// Chunk ID (RIFF)</span>00017 0x70, 0x70, 0x70, 0x70, <span class="comment">// Chunk payload size (calculate after rec!)</span>00018 <span class="charliteral">'W'</span> , <span class="charliteral">'A'</span> , <span class="charliteral">'V'</span> , <span class="charliteral">'E'</span> , <span class="comment">// RIFF resource format type</span>00019 00020 <span class="charliteral">'f'</span> , <span class="charliteral">'m'</span> , <span class="charliteral">'t'</span> , <span class="charliteral">' '</span> , <span class="comment">// Chunk ID (fmt )</span>00021 0x14, 0x00, 0x00, 0x00, <span class="comment">// Chunk payload size (0x14 = 20 bytes)</span>00022 0x11, 0x00, <span class="comment">// Format Tag (IMA ADPCM)</span>00023 0x01, 0x00, <span class="comment">// Channels (1)</span>00024 0x80, 0x3e, 0x00, 0x00, <span class="comment">// Sample Rate, 0x3e80 = 16.0kHz</span>00025 0xd7, 0x0f, 0x00, 0x00, <span class="comment">// Average Bytes Per Second</span>00026 0x00, 0x01, <span class="comment">// Data Block Size (256 bytes) </span>00027 0x04, 0x00, <span class="comment">// ADPCM encoded bits per sample (4 bits)</span>00028 0x02, 0x00, <span class="comment">// Extra data (2 bytes)</span>00029 0xf9, 0x01, <span class="comment">// Samples per Block (505 samples)</span>00030 00031 <span class="charliteral">'f'</span> , <span class="charliteral">'a'</span> , <span class="charliteral">'c'</span> , <span class="charliteral">'t'</span> , <span class="comment">// Chunk ID (fact)</span>00032 0xc8, 0x01, 0x00, 0x00, <span class="comment">// Chunk payload size (456 bytes (zeropad!))</span>00033 0xff, 0xff, 0xff, 0xff <span class="comment">// Number of Samples (calculate after rec!)</span>00034 <span class="comment">// Insert 448 zeroes here!</span>00035 };00036 <a name="l00038"></a><a class="code" href="record_8c.html#a2">00038</a> code <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="record_8c.html#a2">RIFFHeader504</a>[] = {00039 <span class="charliteral">'d'</span> , <span class="charliteral">'a'</span> , <span class="charliteral">'t'</span> , <span class="charliteral">'a'</span> , <span class="comment">// Chunk ID (data)</span>00040 0x70, 0x70, 0x70, 0x70 <span class="comment">// Chunk payload size (calculate after rec!)</span>00041 };00042 00043 <a name="l00101"></a><a class="code" href="record_8h.html#a0">00101</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="record_8c.html#a3">Record</a>(){00102 00103 xdata <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> blockNumber;00104 xdata <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> sectorCount;00105 xdata <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> lastSector;00106 bit stopRecording = 0;00107 bit continueRecording = 0;00108 00109 <span class="keywordtype">char</span> oldlevel=0;00110 blockNumber = 0;00111 sectorCount = 1;00112 00113 <a class="code" href="player_8c.html#a3">playingState</a> = <a class="code" href="ui_8h.html#a25a23">PS_RECORDING</a>; <span class="comment">//Inform the world that rec mode is on.</span>00114 00115 <span class="comment">// Kick vs10xx into action!</span>00116 00117 <span class="comment">/* Set clock register, doubler etc. */</span>00118 <span class="preprocessor">#ifdef VS1003</span>00119 <span class="preprocessor"></span> <span class="comment">// Set base xtal 14.7456MHZ (0x0696) | multiplier:fixed 2.5 (0x600)</span>00120 <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(<a class="code" href="vs10xx_8h.html#a5">SPI_CLOCKF</a>,0x66,0x96); 00121 <span class="preprocessor">#else</span>00122 <span class="preprocessor"></span> <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(<a class="code" href="vs10xx_8h.html#a5">SPI_CLOCKF</a>,156,204); <span class="comment">//for 14.576MHz XTAL</span>00123 <span class="preprocessor">#endif</span>00124 <span class="preprocessor"></span> 00125 <span class="comment">//Set sample rate 16khz for VS1003 (6.4kHz for VS1002 :( )</span>00126 <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(<a class="code" href="vs10xx_8h.html#a14">SPI_AICTRL0</a>,0x00,0x09); <span class="comment">//Set sample rate divider=9</span>00127 <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(<a class="code" href="vs10xx_8h.html#a15">SPI_AICTRL1</a>,0x10,0x00); <span class="comment">//AutoGain OFF, reclevel 0x1000</span>00128 <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(<a class="code" href="vs10xx_8h.html#a2">SPI_MODE</a>,0x18,0x04); <span class="comment">//RECORD,NEWMODE,RESET</span>00129 <a class="code" href="board_8h.html#a49">Delay</a>(10);00130 00131 <span class="comment">/* Set clock register, doubler etc. */</span>00132 <span class="preprocessor">#ifdef VS1003</span>00133 <span class="preprocessor"></span> <span class="comment">// Set base xtal 14.7456MHZ (0x0696) | multiplier:fixed 2.5 (0x600)</span>00134 <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(<a class="code" href="vs10xx_8h.html#a5">SPI_CLOCKF</a>,0x66,0x96); 00135 <span class="preprocessor">#else</span>00136 <span class="preprocessor"></span> <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(<a class="code" href="vs10xx_8h.html#a5">SPI_CLOCKF</a>,156,204); <span class="comment">//for 14.576MHz XTAL</span>00137 <span class="preprocessor">#endif</span>00138 <span class="preprocessor"></span> 00139 00140 <span class="comment">// Locate free space</span>00151 <span class="comment"></span> <a class="code" href="filesys_8c.html#a10">freeSector</a> = 0;00152 <a class="code" href="filesys_8c.html#a17">ScanForFreeSector</a>();00153 <a class="code" href="buffer_8c.html#a2">sectorAddress</a>.<a class="code" href="unionAddress.html#o0">l</a> = <a class="code" href="filesys_8c.html#a10">freeSector</a>;00154 <a class="code" href="filesys_8c.html#a6">fragment</a>[0].<a class="code" href="structfragmentEntry.html#o0">start</a> = <a class="code" href="filesys_8c.html#a10">freeSector</a>;00155 00156 00164 <span class="keywordflow">for</span> (<a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o0">c</a>=0; <a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o0">c</a><56; <a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o0">c</a>++){ <span class="comment">//temp is unsafe global temp variable.</span>00165 <a class="code" href="buffer_8c.html#a0">diskSect</a>.<a class="code" href="unionDiskBlock.html#o1">raw</a>.<a class="code" href="structDiskBlock_1_1Raw.html#o0">buf</a>[<a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o0">c</a>] = <a class="code" href="record_8c.html#a1">RIFFHeader0</a>[<a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o0">c</a>];00166 }00167 <span class="keywordflow">for</span> (<a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o1">i</a>=52; <a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o1">i</a><504; <a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o1">i</a>++){00168 <a class="code" href="buffer_8c.html#a0">diskSect</a>.<a class="code" href="unionDiskBlock.html#o1">raw</a>.<a class="code" href="structDiskBlock_1_1Raw.html#o0">buf</a>[<a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o1">i</a>] = 0;00169 }00170 <span class="keywordflow">for</span> (<a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o1">i</a>=504; <a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o1">i</a><512; <a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o1">i</a>++){00171 <a class="code" href="buffer_8c.html#a0">diskSect</a>.<a class="code" href="unionDiskBlock.html#o1">raw</a>.<a class="code" href="structDiskBlock_1_1Raw.html#o0">buf</a>[<a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o1">i</a>] = <a class="code" href="record_8c.html#a2">RIFFHeader504</a>[<a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o1">i</a>-504];00172 }00173 00180 lastSector = <a class="code" href="filesys_8c.html#a10">freeSector</a>;00181 <a class="code" href="storage_8h.html#a4">WriteDiskSector</a>(<a class="code" href="filesys_8c.html#a10">freeSector</a>);00182 00183 <span class="comment">/* Get a new free sector */</span>00184 <a class="code" href="filesys_8c.html#a17">ScanForFreeSector</a>();00185 <a class="code" href="buffer_8c.html#a2">sectorAddress</a>.<a class="code" href="unionAddress.html#o0">l</a> = <a class="code" href="filesys_8c.html#a10">freeSector</a>;00186 <a class="code" href="buffer_8c.html#a1">dataBufPtr</a> = <a class="code" href="buffer_8c.html#a0">diskSect</a>.<a class="code" href="unionDiskBlock.html#o1">raw</a>.<a class="code" href="structDiskBlock_1_1Raw.html#o0">buf</a>;00187 00188 <a class="code" href="board_8h.html#a49">Delay</a>(10);00189 <span class="comment">//Sync to incoming audio frame...</span>00190 <span class="keywordflow">while</span> (<a class="code" href="vs10xx_8h.html#a38">Mp3ReadRegister</a>(<a class="code" href="vs10xx_8h.html#a11">SPI_HDAT1</a>)>>8) <span class="comment">//lots of data in buffer</span>00191 ; <span class="comment">//Wait until buffer level restarts from 0</span>00192 00193 <a class="code" href="buffer_8c.html#a1">dataBufPtr</a> = <a class="code" href="buffer_8c.html#a0">diskSect</a>.<a class="code" href="unionDiskBlock.html#o1">raw</a>.<a class="code" href="structDiskBlock_1_1Raw.html#o0">buf</a>; <span class="comment">//reset dataBufPtr to start of filebuffer</span>00194 blockNumber = 0;00195 00196 ConsoleWrite(<span class="stringliteral">"\rRecording, push button to stop..."</span>);00197 <span class="keywordflow">while</span>((!<a class="code" href="board_8h.html#a14">KEY_BUTTON</a> 00198 || (blockNumber!=0)00199 || ((sectorCount)%(<a class="code" href="filesys_8c.html#a5">fatSectorsPerCluster</a>)!=0))00200 && (!stopRecording)){ 00201 00202 <a class="code" href="board_8h.html#a11">GREEN_LED</a> = <a class="code" href="board_8h.html#a12">LED_ON</a>;00203 00204 <span class="comment">//Check for data</span>00205 <span class="keywordflow">if</span> (<a class="code" href="vs10xx_8h.html#a38">Mp3ReadRegister</a>(<a class="code" href="vs10xx_8h.html#a11">SPI_HDAT1</a>) >= 128){ 00206 <span class="comment">//there is a data block to be read...</span>00207 <a class="code" href="board_8h.html#a11">GREEN_LED</a> = <a class="code" href="board_8h.html#a13">LED_OFF</a>;00208 blockNumber++;00209 ⌨️ 快捷键说明
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