record_8h.html

MP3 Player Source Code

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>(SPI_CLOCKF,0x66,0x96); 
00121 <span class="preprocessor">#else</span>
00122 <span class="preprocessor"></span>  <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(SPI_CLOCKF,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>(SPI_AICTRL0,0x00,0x09); <span class="comment">//Set sample rate divider=9</span>
00127   <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(SPI_AICTRL1,0x10,0x00); <span class="comment">//AutoGain OFF, reclevel 0x1000</span>
00128   <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(SPI_MODE,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>(SPI_CLOCKF,0x66,0x96); 
00135 <span class="preprocessor">#else</span>
00136 <span class="preprocessor"></span>  <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(SPI_CLOCKF,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>&lt;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>&lt;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>&lt;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>(freeSector);
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>(SPI_HDAT1)&gt;&gt;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         &amp;&amp; (!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>(SPI_HDAT1) &gt;= 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 
00210       <span class="comment">//dataBufPtr should point inside disk buffer, this should never fail:</span>
00211       <span class="keywordflow">if</span> (<a class="code" href="buffer_8c.html#a1">dataBufPtr</a>&gt;(<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>+511)){
00212         ConsoleWrite(<span class="stringliteral">"\rBuffer indexing error. Stop.\r"</span>);
00213         <span class="keywordflow">while</span>(1); <span class="comment">//stop</span>
00214       }
00215       
00216       <span class="comment">//Get the data</span>
00217       <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>&lt;128;<a class="code" href="board_8c.html#a0">temp</a>.<a class="code" href="unionTemp.html#o0">c</a>++){
00218         data <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;
00219         i = <a class="code" href="vs10xx_8h.html#a38">Mp3ReadRegister</a>(SPI_HDAT0);         
00220         *<a class="code" href="buffer_8c.html#a1">dataBufPtr</a>++ = (i&gt;&gt;8);
00221         *<a class="code" href="buffer_8c.html#a1">dataBufPtr</a>++ = (i&amp;0xff);
00222       }
00223       
00224       
00225       { <span class="comment">//Do basic SOUND LEVEL BAR calculation based on the 1 linear</span>
00226         <span class="comment">//sample in block[0] and [1]</span>
00227         <span class="keywordtype">signed</span> <span class="keywordtype">int</span> soundlevel;
00228         <span class="comment">// the user interface (level bar) calculation</span>
00229         <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a6">uiMode</a> == <a class="code" href="ui_8h.html#a24a2">UI_TITLE</a>){
00230           soundlevel = (<span class="keywordtype">signed</span> <span class="keywordtype">char</span>)<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>[1]&lt;&lt;7;
00231           soundlevel |= <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>[0]&gt;&gt;1;
00232           <span class="keywordflow">if</span> (soundlevel&lt;0) soundlevel = -soundlevel;
00233           <a class="code" href="display_8c.html#a5">displayValue</a>=0;
00234           <span class="keywordflow">while</span> (soundlevel&gt;31){
00235             <a class="code" href="display_8c.html#a5">displayValue</a>++;         
00236             soundlevel&gt;&gt;=1;
00237           }
00238           <span class="keywordflow">if</span> (soundlevel&gt;19) <a class="code" href="display_8c.html#a5">displayValue</a>++;
00239           <span class="keywordflow">if</span> (soundlevel&gt;12) <a class="code" href="display_8c.html#a5">displayValue</a>++;
00240           <span class="keywordflow">if</span> (soundlevel&gt;6) <a class="code" href="display_8c.html#a5">displayValue</a>++;
00241           <a class="code" href="display_8c.html#a5">displayValue</a>-=3;
00242           <a class="code" href="display_8c.html#a5">displayValue</a>*=13;
00243           <span class="keywordflow">if</span> (oldlevel&gt;<a class="code" href="display_8c.html#a5">displayValue</a>){
00244             <a class="code" href="display_8c.html#a5">displayValue</a>=oldlevel-3;
00245           }
00246           oldlevel=<a class="code" href="display_8c.html#a5">displayValue</a>;       
00247         }     
00248         <a class="code" href="player_8c.html#a12">AvailableProcessorTime</a>();
00249         
00250       }<span class="comment">//SOUND LEVEL BAR calculation</span>
00251       
00252     }<span class="comment">//if there was data to read</span>
00253     
00254     
00255     <span class="comment">//Release SCI chip select, we might want to use MMC card</span>
00256     <a class="code" href="board_8h.html#a5">Mp3DeselectControl</a>();
00257