FreeRTOS/Demo/Common/FileSystem/FatFs-0.7e/doc/ja/lseek.html - third_party/github/FreeRTOS/FreeRTOS-Kernel - Git at Google

 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
 <html lang="ja">
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=Shift_JIS">
 <meta http-equiv="Content-Style-Type" content="text/css">
 <link rel="up" title="FatFs" href="../00index_j.html">
 <link rel="stylesheet" href="../css_j.css" type="text/css" media="screen" title="ELM Default">
 <title>FatFs - f_lseek</title>
 </head>

 <body>

 <div class="para">
 <h2>f_lseek</h2>
 <p>t@CÌR/W|C^ðÚ®µÜ·B</p>
 <pre>
 FRESULT f_lseek (
   FIL* <em>FileObject</em>,   /* t@CEIuWFNg\¢ÌÖÌ|C^ */
   DWORD <em>Offset</em>       /* Ú®æItZbg */
 );
 </pre>
 </div>

 <div class="para">
 <h4>ø</h4>
 <dl class="par">
 <dt>FileObject</dt>
 <dd>ÎÛÆÈét@CEIuWFNg\¢ÌÖÌ|C^ðwèµÜ·B</dd>
 <dt>Offset</dt>
 <dd>Ú®æÌItZbgiR/W|C^jlBt@Cæª©çÌItZbgðoCgPÊÅwèµÜ·B</dd>
 </dl>
 </div>


 <div class="para">
 <h4>ßèl</h4>
 <dl class="ret">
 <dt>FR_OK (0)</dt>
 <dd>³íI¹B</dd>
 <dt>FR_DISK_ERR</dt>
 <dd>fBXNEG[Éæé¸sB</dd>
 <dt>FR_INT_ERR</dt>
 <dd>s³ÈFAT\¢Ü½ÍàG[Éæé¸sB</dd>
 <dt>FR_NOT_READY</dt>
 <dd>fBAªZbg³êÄ¢È¢ÈÇA¨hCuª®ìs\óÔB</dd>
 <dt>FR_INVALID_OBJECT</dt>
 <dd>³øÈt@CEIuWFNgB</dd>
 </dl>
 </div>


 <div class="para">
 <h4>ðà</h4>
 <p>t@CR/W|C^(t@CEIuWFNgàÌfptroÅAÉÇÝoµE«Ý³êéoCgÌItZbgð¦·)ðÚ®µÜ·BItZbgÌ´_Ít@Cæª©çÅ·B«Ý[hÅt@CETCYæèå«Èlðwè·éÆA»±ÜÅt@Cªg£³êAg£³ê½ªÌf[^Í¢è`ÆÈèÜ·Bf[^ðx³¬É«Ý½¢Æ«ÍA\ß±ÌÖÅKvÈTCYÜÅt@CETCYðg£µÄ¨ÆÇ¢Åµå¤Bf_lseekÖª³íI¹µ½ ÆÍAt@CR/W|C^ª³µÚ®µ½©fptrð`FbN·é×«Å·Bt@CR/W|C^ªwèæè¬³¢Æ«ÍAÌ´öªl¦çêÜ·B</p>
 <ul>
 <li>ñ«Ý[hÌ½ßAt@CETCYÅNbv³ê½B</li>
 <li>t@Cg£ÉfBXNªtÉÈÁ½B</li>
 </ul>
 </div>


 <div class="para">
 <h4>Îîñ</h4>
 <p><tt>_FS_MINIMIZE &lt; 3</tt>ÌÆ«gpÂ\Å·B</p>
 </div>


 <div class="para">
 <h4>gpá</h4>
 <pre>
     /* ItZbg5000ÖÚ® */
     res = f_lseek(&amp;file, 5000);

     /* t@CÇLÌõ (t@CI[ÖÚ®) */
     res = f_lseek(&amp;file, file.fsize);

     /* 3000oCgißé */
     res = f_lseek(&amp;file, file.fptr + 3000);

     /* 2000oCgß· (I[o[t[ÉÓ) */
     res = f_lseek(&amp;file, file.fptr - 2000);
 </pre>
 <pre>
     /* NX^æsèÄ (Xg[~OECgÌobt@EI[o[h~) */

     res = f_open(&amp;file, "record.wav", FA_CREATE_NEW | FA_WRITE); /* t@Cì¬ */

     res = f_lseek(&amp;file, MAX_SIZE);        /* \ªÈNX^ÌæsèÄ */
     if (res || file.fptr != PRE_SIZE) .... /* ³µt@Cªg£³ê½©`FbN */

     res = f_lseek(&amp;file, DATA_START);      /* f[^EXg[ÌL^(AP[VfBC³µ) */
     ...

     res = f_truncate(&amp;file);              /* svÌæÌØèÌÄ */
     res = f_lseek(&amp;file, 0);              /* wb_ÌL^ */
     ...

     res = f_close(&amp;file);
 </pre>
 </div>


 <div class="para">
 <h4>QÆ</h4>
 <p><tt><a href="open.html">f_open</a>, <a href="sfile.html">FIL</a></tt></p>
 </div>

 <p class="foot"><a href="../00index_j.html">ßé</a></p>
 </body>
 </html>
	<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
	<html lang="ja">
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=Shift_JIS">
	<meta http-equiv="Content-Style-Type" content="text/css">
	<link rel="up" title="FatFs" href="../00index_j.html">
	<link rel="stylesheet" href="../css_j.css" type="text/css" media="screen" title="ELM Default">
	<title>FatFs - f_lseek</title>
	</head>

	<body>

	<div class="para">
	<h2>f_lseek</h2>
	<p>t@CÌR/W\|C^ðÚ®µÜ·B</p>
	<pre>
	FRESULT f_lseek (
	FIL* <em>FileObject</em>, /* t@CEIuWFNg\¢ÌÖÌ\|C^ */
	DWORD <em>Offset</em> /* Ú®æItZbg */
	);
	</pre>
	</div>

	<div class="para">
	<h4>ø</h4>
	<dl class="par">
	<dt>FileObject</dt>
	<dd>ÎÛÆÈét@CEIuWFNg\¢ÌÖÌ\|C^ðwèµÜ·B</dd>
	<dt>Offset</dt>
	<dd>Ú®æÌItZbgiR/W\|C^jlBt@Cæª©çÌItZbgðoCgPÊÅwèµÜ·B</dd>
	</dl>
	</div>


	<div class="para">
	<h4>ßèl</h4>
	<dl class="ret">
	<dt>FR_OK (0)</dt>
	<dd>³íI¹B</dd>
	<dt>FR_DISK_ERR</dt>
	<dd>fBXNEG[Éæé¸sB</dd>
	<dt>FR_INT_ERR</dt>
	<dd>s³ÈFAT\¢Ü½ÍàG[Éæé¸sB</dd>
	<dt>FR_NOT_READY</dt>
	<dd>fBAªZbg³êÄ¢È¢ÈÇA¨hCuª®ìs\óÔB</dd>
	<dt>FR_INVALID_OBJECT</dt>
	<dd>³øÈt@CEIuWFNgB</dd>
	</dl>
	</div>


	<div class="para">
	<h4>ðà</h4>
	<p>t@CR/W\|C^(t@CEIuWFNgàÌfptroÅAÉÇÝoµE«Ý³êéoCgÌItZbgð¦·)ðÚ®µÜ·BItZbgÌ´_Ít@Cæª©çÅ·B«Ý[hÅt@CETCYæèå«Èlðwè·éÆA»±ÜÅt@Cªg£³êAg£³ê½ªÌf[^Í¢è`ÆÈèÜ·Bf[^ðx³¬É«Ý½¢Æ«ÍA\ß±ÌÖÅKvÈTCYÜÅt@CETCYðg£µÄ¨ÆÇ¢Åµå¤Bf_lseekÖª³íI¹µ½ ÆÍAt@CR/W\|C^ª³µÚ®µ½©fptrð`FbN·é×«Å·Bt@CR/W\|C^ªwèæè¬³¢Æ«ÍAÌ´öªl¦çêÜ·B</p>
	<ul>
	<li>ñ«Ý[hÌ½ßAt@CETCYÅNbv³ê½B</li>
	<li>t@Cg£ÉfBXNªtÉÈÁ½B</li>
	</ul>
	</div>


	<div class="para">
	<h4>Îîñ</h4>
	<p><tt>_FS_MINIMIZE < 3</tt>ÌÆ«gpÂ\Å·B</p>
	</div>


	<div class="para">
	<h4>gpá</h4>
	<pre>
	/* ItZbg5000ÖÚ® */
	res = f_lseek(&file, 5000);

	/* t@CÇLÌõ (t@CI[ÖÚ®) */
	res = f_lseek(&file, file.fsize);

	/* 3000oCgißé */
	res = f_lseek(&file, file.fptr + 3000);

	/* 2000oCgß· (I[o[t[ÉÓ) */
	res = f_lseek(&file, file.fptr - 2000);
	</pre>
	<pre>
	/* NX^æsèÄ (Xg[~OECgÌobt@EI[o[h~) */

	res = f_open(&file, "record.wav", FA_CREATE_NEW \| FA_WRITE); /* t@Cì¬ */

	res = f_lseek(&file, MAX_SIZE); /* \ªÈNX^ÌæsèÄ */
	if (res \|\| file.fptr != PRE_SIZE) .... /* ³µt@Cªg£³ê½©`FbN */

	res = f_lseek(&file, DATA_START); /* f[^EXg[ÌL^(AP[VfBC³µ) */
	...

	res = f_truncate(&file); /* svÌæÌØèÌÄ */
	res = f_lseek(&file, 0); /* wb_ÌL^ */
	...

	res = f_close(&file);
	</pre>
	</div>


	<div class="para">
	<h4>QÆ</h4>
	<p><tt><a href="open.html">f_open</a>, <a href="sfile.html">FIL</a></tt></p>
	</div>

	<p class="foot"><a href="../00index_j.html">ßé</a></p>
	</body>
	</html>