savelij13
8e92305484
- Supported multiple partitions on a plysical drive. (FatFs) - Fixed an endian sensitive code in f_mkfs(). (FatFs) - Added a capability of extending the file size to f_lseek(). - Added minimization level 3. - Fixed a problem that can collapse a sector when recreate an - existing file in any sub-directory at non FAT32 cfg. (Tiny-FatFs)
66 lines
2.0 KiB
HTML
66 lines
2.0 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<html lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<meta http-equiv="Content-Style-Type" content="text/css">
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<link rel="up" title="FatFs" href="../00index_e.html">
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<link rel="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default">
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<title>FatFs - disk_ioctl</title>
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</head>
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<body>
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<div class="para">
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<h2>disk_ioctl</h2>
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<p>The disk_ioctl function cntrols device specified features and miscellaneous functions other than disk read/write.</p>
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<pre>
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DRESULT disk_ioctl (
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BYTE <em>Drive</em>, /* Drive number */
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BYTE <em>Command</em>, /* Control command code */
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void* <em>Buffer</em> /* Data transfer buffer */
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);
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</pre>
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</div>
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<div class="para">
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<h4>Parameters</h4>
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<dl class="par">
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<dt>Drive</dt>
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<dd>Specifies drive number (0-9).</dd>
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<dt>Command</dt>
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<dd>Specifies the command code.</dd>
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<dt>Buffer</dt>
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<dd>Pointer to the parameter buffer depends on the command code. When it is not used, specify a NULL pointer.</dd>
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</dl>
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</div>
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<div class="para">
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<h4>Return Value</h4>
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<dl class="ret">
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<dt>RES_OK (0)</dt>
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<dd>The function succeeded.</dd>
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<dt>RES_ERROR</dt>
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<dd>Any error occured.</dd>
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<dt>RES_PARERR</dt>
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<dd>Invalid command code.</dd>
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<dt>RES_NOTRDY</dt>
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<dd>The disk dirve has not been initialized.</dd>
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</dl>
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</div>
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<div class="para">
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<h4>Description</h4>
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<p>The FatFs module uses only device independent commands described below. Any device dependent function is not used. In read-only configuration, This function is not needed.</p>
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<table class="lst">
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<tr><th>Command</th><th>Description</td></tr>
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<tr><td>GET_SECTOR_COUNT</td><td>Returns total sectors on the drive into the DWORD variable pointed by Buffer.</td></tr>
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<tr><td>CTRL_SYNC</td><td>Make sure that the drive has finished to write data. When the module has a write back cache, write back the dirty sector immediately.</td></tr>
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</table>
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</div>
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<p class="foot"><a href="../00index_e.html">Return</a></p>
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</body>
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</html>
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