vs10xx_8c.html

MP3播放器源代码, VS1003B

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<a class="anchor" name="a2" doxytag="vs10xx.c::Mp3SoftReset" ></a><p>
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          <td class="md" nowrap valign="top"> void Mp3SoftReset           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
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<p>
Soft Reset of VS10xx (Between songs). 
<p>

<p>
Definition at line <a class="el" href="vs10xx_8c-source.html#l00035">35</a> of file <a class="el" href="vs10xx_8c-source.html">vs10xx.c</a>.
<p>
References <a class="el" href="board_8c-source.html#l00036">Delay()</a>, <a class="el" href="board_8h-source.html#l00070">MP3_DREQ</a>, <a class="el" href="board_8h-source.html#l00061">Mp3DeselectData</a>, <a class="el" href="board_8h-source.html#l00058">Mp3SelectData</a>, <a class="el" href="vs10xx_8h-source.html#l00068">Mp3WriteRegister</a>, <a class="el" href="vs10xx_8h-source.html#l00022">SPI_CLOCKF</a>, <a class="el" href="vs10xx_8h-source.html#l00019">SPI_MODE</a>, <a class="el" href="board_8h-source.html#l00235">SPIPutChar</a>, <a class="el" href="board_8h-source.html#l00238">SPIPutCharWithoutWaiting</a>, and <a class="el" href="board_8h-source.html#l00232">SPIWait</a>.
<p>
Referenced by <a class="el" href="player_8c-source.html#l00765">main()</a>, and <a class="el" href="vs10xx_8c-source.html#l00069">Mp3Reset()</a>.
<p>
<pre class="fragment"><div>00035                    {
00036 
00037   <span class="comment">/* Soft Reset of VS10xx */</span>
00038   <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a> (SPI_MODE, 0x08, 0x04); <span class="comment">/* Newmode, Reset, No L1-2 */</span>
00039 
00040   <a class="code" href="board_8h.html#a51">Delay</a>(1); <span class="comment">/* One millisecond delay */</span>
00041   <span class="keywordflow">while</span> (!<a class="code" href="board_8h.html#a9">MP3_DREQ</a>) <span class="comment">/* wait for startup */</span>
00042     ;
00043   
00044   <span class="comment">/* Set clock register, doubler etc. */</span>
00045 <span class="preprocessor">#ifdef VS1003</span>
00046 <span class="preprocessor"></span>  <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(SPI_CLOCKF, 0xa6, 0x96);
00047 <span class="preprocessor">#else</span>
00048 <span class="preprocessor"></span>  <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(SPI_CLOCKF, 156, 204);
00049 <span class="preprocessor">#endif</span>
00050 <span class="preprocessor"></span>  
00051   <a class="code" href="board_8h.html#a51">Delay</a>(1); <span class="comment">/* One millisecond delay */</span>
00052 
00053  
00054   <span class="comment">/* Send null bytes to data interface */</span>
00055   <a class="code" href="board_8h.html#a7">Mp3SelectData</a>();
00056   <a class="code" href="board_8h.html#a45">SPIPutCharWithoutWaiting</a>(0);
00057   <a class="code" href="board_8h.html#a44">SPIPutChar</a>(0);
00058   <a class="code" href="board_8h.html#a44">SPIPutChar</a>(0);
00059   <a class="code" href="board_8h.html#a44">SPIPutChar</a>(0);
00060   <a class="code" href="board_8h.html#a43">SPIWait</a>();
00061   <a class="code" href="board_8h.html#a8">Mp3DeselectData</a>();
00062 
00063 }
</div></pre>
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<a class="anchor" name="a6" doxytag="vs10xx.c::PlayDiskSectors" ></a><p>
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          <td class="md" nowrap valign="top"> unsigned char PlayDiskSectors           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">unsigned int&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>nSectorsToPlay</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
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<p>
Play disk sectors from disk. 
<p>
Starting from current value in global variable sectorAddress, sends a number of disk sectors to vs10xx and returns. 
<p>
How many sectors to send between ff/rew commands 
<p>
Definition at line <a class="el" href="vs10xx_8c-source.html#l00202">202</a> of file <a class="el" href="vs10xx_8c-source.html">vs10xx.c</a>.
<p>
References <a class="el" href="player_8c-source.html#l00332">AvailableProcessorTime()</a>, <a class="el" href="buffer_8h-source.html#l00107">DiskBlock::Raw::buf</a>, <a class="el" href="buffer_8c-source.html#l00013">dataBufPtr</a>, <a class="el" href="buffer_8c-source.html#l00010">diskSect</a>, <a class="el" href="board_8h-source.html#l00081">GREEN_LED</a>, <a class="el" href="buffer_8h-source.html#l00129">Address::l</a>, <a class="el" href="board_8h-source.html#l00087">LED_OFF</a>, <a class="el" href="board_8h-source.html#l00084">LED_ON</a>, <a class="el" href="board_8h-source.html#l00070">MP3_DREQ</a>, <a class="el" href="board_8h-source.html#l00061">Mp3DeselectData</a>, <a class="el" href="vs10xx_8c-source.html#l00017">Mp3ReadRegister()</a>, <a class="el" href="board_8h-source.html#l00058">Mp3SelectData</a>, <a class="el" href="vs10xx_8h-source.html#l00068">Mp3WriteRegister</a>, <a class="el" href="aviplay_8c-source.html#l00144">PlayAvi()</a>, <a class="el" href="player_8c-source.html#l00226">playingState</a>, <a class="el" href="storage_8c-source.html#l00071">PrepareToReadDiskSector()</a>, <a class="el" href="ui_8h.html#a25a16">PS_CUE</a>, <a class="el" href="ui_8h.html#a25a18">PS_CUE_ACTION</a>, <a class="el" href="ui_8h.html#a25a17">PS_CUE_WAIT1003</a>, <a class="el" href="ui_8h.html#a25a13">PS_END_OF_SONG</a>, <a class="el" href="ui_8h.html#a25a21">PS_FALLBACK_1</a>, <a class="el" href="ui_8h.html#a25a22">PS_FALLBACK_N</a>, <a class="el" href="ui_8h.html#a25a14">PS_NEXT_SONG</a>, <a class="el" href="ui_8h.html#a25a12">PS_NORMAL</a>, <a class="el" href="ui_8h.html#a25a15">PS_PREVIOUS_SONG</a>, <a class="el" href="ui_8h.html#a25a23">PS_RECORDING</a>, <a class="el" href="ui_8h.html#a25a20">PS_REW_WAIT1003</a>, <a class="el" href="ui_8h.html#a25a19">PS_REWIND</a>, <a class="el" href="unionDiskBlock.html#o1">DiskBlock::raw</a>, <a class="el" href="storage_8c-source.html#l00110">ReadDiskSector()</a>, <a class="el" href="buffer_8c-source.html#l00015">sectorAddress</a>, <a class="el" href="vs10xx_8c-source.html#l00178">SendZerosToVS10xx()</a>, <a class="el" href="vs10xx_8h-source.html#l00033">SPI_AICTRL2</a>, <a class="el" href="vs10xx_8h-source.html#l00028">SPI_HDAT1</a>, <a class="el" href="board_8h-source.html#l00235">SPIPutChar</a>, <a class="el" href="board_8h-source.html#l00238">SPIPutCharWithoutWaiting</a>, and <a class="el" href="board_8h-source.html#l00232">SPIWait</a>.
<p>
Referenced by <a class="el" href="player_8c-source.html#l00724">PlayCurrentFile()</a>.
<p>
<pre class="fragment"><div>00202                                                            {
00203   
00205   <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> fallbackCount = 0;
00206 
00207 
00208 <span class="preprocessor">#ifdef AVIPLAY</span>
00209 <span class="preprocessor"></span>  <span class="keywordflow">if</span> (!<a class="code" href="aviplay_8c.html#a6">PlayAvi</a>()) <span class="keywordflow">return</span> 0; <span class="comment">//try to play AVI file soundtrack starting from</span>
00210                             <span class="comment">//current sector, if avifile is played, return.</span>
00211 <span class="preprocessor">#endif</span>
00212 <span class="preprocessor"></span>
00213 
00214   <a class="code" href="storage_8h.html#a1">PrepareToReadDiskSector</a>(<a class="code" href="buffer_8c.html#a2">sectorAddress</a>.<a class="code" href="unionAddress.html#o0">l</a>);
00215   <span class="keywordflow">while</span> (nSectorsToPlay--){
00216 
00217     <a class="code" href="player_8c.html#a12">AvailableProcessorTime</a>();
00218 
00219     <a class="code" href="storage_8h.html#a2">ReadDiskSector</a>(<a class="code" href="buffer_8c.html#a2">sectorAddress</a>.<a class="code" href="unionAddress.html#o0">l</a>);
00220 
00221     <span class="comment">/* If playing state is something else than "play normally",</span>
00222 <span class="comment">       exit returning the request number. */</span>
00223     <span class="keywordflow">if</span> ((<a class="code" href="player_8c.html#a3">playingState</a>==<a class="code" href="ui_8h.html#a25a13">PS_END_OF_SONG</a>)||
00224         (<a class="code" href="player_8c.html#a3">playingState</a>==<a class="code" href="ui_8h.html#a25a14">PS_NEXT_SONG</a>)||
00225         (<a class="code" href="player_8c.html#a3">playingState</a>==<a class="code" href="ui_8h.html#a25a23">PS_RECORDING</a>)||
00226         (<a class="code" href="player_8c.html#a3">playingState</a>==<a class="code" href="ui_8h.html#a25a15">PS_PREVIOUS_SONG</a>)){
00227       <span class="keywordflow">return</span> <a class="code" href="player_8c.html#a3">playingState</a>;
00228     }
00229 
00230 
00231     <span class="comment">/* === REWIND / FAST FORWARD FUNCTIONALITY CODE BEGINS === */</span>
00232     <span class="comment">/* If you don't implement rewind / fast forward, leave these lines out */</span>
00233 
00234     <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a3">playingState</a>==<a class="code" href="ui_8h.html#a25a22">PS_FALLBACK_N</a>){
00235       <span class="keywordflow">if</span> ((--fallbackCount)==0){
00236         <a class="code" href="player_8c.html#a3">playingState</a>=<a class="code" href="ui_8h.html#a25a12">PS_NORMAL</a>;
00237       }
00238     }
00239 
00240     <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a3">playingState</a>==<a class="code" href="ui_8h.html#a25a21">PS_FALLBACK_1</a>){
00241       <span class="comment">/* Now we should have brand new sector in memory ready for sending to</span>
00242 <span class="comment">         VS1003, so let's send zeroes between old and new data. */</span>
00243       ConsoleWrite(<span class="stringliteral">"(Zeros)"</span>);
00244       <a class="code" href="vs10xx_8c.html#a5">SendZerosToVS10xx</a>();
00245       ConsoleWrite(<span class="stringliteral">"-&gt;Fallback to normal"</span>);
00246       fallbackCount = 24;
00247       <a class="code" href="player_8c.html#a3">playingState</a> = <a class="code" href="ui_8h.html#a25a22">PS_FALLBACK_N</a>;
00248     }
00249 
00250 
00251     <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a3">playingState</a>==<a class="code" href="ui_8h.html#a25a16">PS_CUE</a>){ <span class="comment">//Request to start fast forward      </span>
00252       <span class="keywordflow">if</span> (<a class="code" href="vs10xx_8h.html#a38">Mp3ReadRegister</a>(SPI_HDAT1)==((<span class="keywordtype">int</span>)<span class="charliteral">'W'</span>&lt;&lt; 8)+<span class="charliteral">'m'</span>){
00253         ConsoleWrite(<span class="stringliteral">"\rWmCUE-&gt;Wait"</span>);
00254         <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(SPI_AICTRL2, 0x12, 0x34);
00255         <a class="code" href="player_8c.html#a3">playingState</a> = <a class="code" href="ui_8h.html#a25a17">PS_CUE_WAIT1003</a>;
00256       }<span class="keywordflow">else</span>{
00257         <a class="code" href="player_8c.html#a3">playingState</a> = <a class="code" href="ui_8h.html#a25a18">PS_CUE_ACTION</a>;
00258       }
00259     }
00260     
00261     <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a3">playingState</a>==<a class="code" href="ui_8h.html#a25a17">PS_CUE_WAIT1003</a>){ <span class="comment">//Wait for permission to break data flow</span>
00262       <span class="keywordflow">if</span> (<a class="code" href="vs10xx_8h.html#a38">Mp3ReadRegister</a>(SPI_AICTRL2)==0x2345){ <span class="comment">//permission granted</span>
00263         ConsoleWrite(<span class="stringliteral">"-&gt;Action"</span>);
00264         <a class="code" href="player_8c.html#a3">playingState</a> = <a class="code" href="ui_8h.html#a25a18">PS_CUE_ACTION</a>;
00265       }
00266     }
00267     
00268     <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a3">playingState</a>==<a class="code" href="ui_8h.html#a25a18">PS_CUE_ACTION</a>){
00269       <span class="keywordflow">if</span> (nSectorsToPlay&gt;128){
00270         <a class="code" href="buffer_8c.html#a2">sectorAddress</a>.<a class="code" href="unionAddress.html#o0">l</a> += 128; <span class="comment">//Skip sectors</span>
00271         nSectorsToPlay -= 128;
00272         <span class="comment">//adjust vs1003 song left </span>
00273         ConsoleWrite(<span class="stringliteral">"-&gt;Fallback(5)"</span>);
00274         <a class="code" href="player_8c.html#a3">playingState</a> = <a class="code" href="ui_8h.html#a25a21">PS_FALLBACK_1</a>; <span class="comment">//Sector already in memory still goes.</span>
00275       }
00276     }
00277 
00278     <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a3">playingState</a>==<a class="code" href="ui_8h.html#a25a19">PS_REWIND</a>){ <span class="comment">//Request to start fast forward      </span>
00279       <a class="code" href="vs10xx_8h.html#a32">Mp3WriteRegister</a>(SPI_AICTRL2, 0x12, 0x34);
00280       <a class="code" href="player_8c.html#a3">playingState</a> = <a class="code" href="ui_8h.html#a25a20">PS_REW_WAIT1003</a>;
00281     }
00282 
00283     <span class="keywordflow">if</span> (<a class="code" href="player_8c.html#a3">playingState</a>==<a class="code" href="ui_8h.html#a25a20">PS_REW_WAIT1003</a>){ <span class="comment">//Wait for permission to break data flow</span>
00284       <span class="keywordflow">if</span> (1){
00285         <span class="keywordflow">if</span> (1 || (<a class="code" href="vs10xx_8h.html#a38">Mp3ReadRegister</a>(SPI_AICTRL2)==0x2345)){ <span class="comment">//permission granted</span>
00286           <a class="code" href="buffer_8c.html#a2">sectorAddress</a>.<a class="code" href="unionAddress.html#o0">l</a> -= 128;
00287           nSectorsToPlay += 128;
00288           <a class="code" href="player_8c.html#a3">playingState</a> = <a class="code" href="ui_8h.html#a25a21">PS_FALLBACK_1</a>; <span class="comment">//Sector already in memory still goes.</span>
00289         }
00290       }
00291     }
00292     
00293 
00294     <span class="comment">/* === END OF REWIND / FAST FORWARD FUNCTIONALITY CODE === */</span>
00295     
00296  
00297   
00298     <a class="code" href="buffer_8c.html#a2">sectorAddress</a>.<a class="code" href="unionAddress.html#o0">l</a>++;
00299     <span class="keywordflow">if</span> (nSectorsToPlay){
00300       <span class="comment">/*Do not seek after the last sector*/</span>
00301       <a class="code" href="storage_8h.html#a1">PrepareToReadDiskSector</a>(<a class="code" href="buffer_8c.html#a2">sectorAddress</a>.<a class="code" href="unionAddress.html#o0">l</a>);
00302     }
00303 
00304     <a class="code" href="board_8h.html#a7">Mp3SelectData</a>();
00305 
00306     <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>;
00307     <span class="keywordflow">while</span> (<a class="code" href="buffer_8c.html#a1">dataBufPtr</a> &lt; <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>+512){
00308 
00309       <span class="keywordflow">if</span> (!<a class="code" href="board_8h.html#a9">MP3_DREQ</a>){
00310         <a class="code" href="board_8h.html#a11">GREEN_LED</a> = <a class="code" href="board_8h.html#a12">LED_ON</a>;
00311         <span class="keywordflow">while</span> (!<a class="code" href="board_8h.html#a9">MP3_DREQ</a>){
00312           <a class="code" href="board_8h.html#a8">Mp3DeselectData</a>();
00313           <a class="code" href="player_8c.html#a12">AvailableProcessorTime</a>();
00314           <a class="code" href="board_8h.html#a7">Mp3SelectData</a>();