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-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
-<html lang="en">
-<head>
-<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
-<meta http-equiv="Content-Style-Type" content="text/css">
-<link rel="up" title="FatFs" href="../00index_e.html">
-<link rel="alternate" hreflang="ja" title="Japanese" href="../ja/sfatfs.html">
-<link rel="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default">
-<title>FatFs - FATFS</title>
-</head>
-
-<body>
-
-<div class="para">
-<h2>FATFS</h2>
-<p>The <tt>FATFS</tt> structure (file system object) holds dynamic work area of individual logical drives. It is given by application program and registerd/unregisterd to the FatFs module with <tt>f_mount</tt> function. Initialization is done on first API call after <tt>f_mount</tt> function or media change. Application program must not modify any member in this structure, or any data on the FAT volume can be collapsed.</p>
-<pre>
-<span class="k">typedef</span> <span class="k">struct</span> {
- BYTE fs_type; <span class="c">/* File system type (0, FS_FAT12, FS_FAT16, FS_FAT32 or FS_EXFAT) */</span>
- BYTE drv; <span class="c">/* Physical drive number */</span>
- BYTE n_fats; <span class="c">/* Number of FAT copies (1,2) */</span>
- BYTE wflag; <span class="c">/* win[] flag (b0:win[] is dirty) */</span>
- BYTE fsi_flag; <span class="c">/* FSINFO flags (b7:Disabled, b0:Dirty) */</span>
- WORD id; <span class="c">/* File system mount ID */</span>
- WORD n_rootdir; <span class="c">/* Number of root directory entries (FAT12/16) */</span>
- WORD csize; <span class="c">/* Sectors per cluster */</span>
-<span class="k">#if</span> _MAX_SS != _MIN_SS
- WORD ssize; <span class="c">/* Sector size (512,1024,2048 or 4096) */</span>
-<span class="k">#endif</span>
-<span class="k">#if _FS_EXFAT</span>
- BYTE* dirbuf; <span class="c">/* Directory entry block scratchpad buffer */</span>
-<span class="k">#endif</span>
-<span class="k">#if</span> _FS_REENTRANT
- _SYNC_t sobj; <span class="c">/* Identifier of sync object */</span>
-<span class="k">#endif</span>
-<span class="k">#if</span> !_FS_READONLY
- DWORD last_clust; <span class="c">/* FSINFO: Last allocated cluster (0xFFFFFFFF if invalid) */</span>
- DWORD free_clust; <span class="c">/* FSINFO: Number of free clusters (0xFFFFFFFF if invalid) */</span>
-<span class="k">#endif</span>
-<span class="k">#if</span> _FS_RPATH
- DWORD cdir; <span class="c">/* Cluster number of current directory (0:root) */</span>
-<span class="k">#if _FS_EXFAT</span>
- DWORD cdc_scl; <span class="c">/* Containing directory start cluster (invalid when cdir is 0) */</span>
- DWORD cdc_size; <span class="c">/* b31-b8:Size of containing directory, b7-b0: Chain status */</span>
- DWORD cdc_ofs; <span class="c">/* Offset in the containing directory (invalid when cdir is 0) */</span>
-<span class="k">#endif</span>
-<span class="k">#endif</span>
- DWORD n_fatent; <span class="c">/* Number of FAT entries (Number of clusters + 2) */</span>
- DWORD fsize; <span class="c">/* Sectors per FAT */</span>
- DWORD volbase; <span class="c">/* Volume base LBA */</span>
- DWORD fatbase; <span class="c">/* FAT base LBA */</span>
- DWORD dirbase; <span class="c">/* Root directory base (LBA|Cluster) */</span>
- DWORD database; <span class="c">/* Data base LBA */</span>
- DWORD winsect; <span class="c">/* Sector LBA appearing in the win[] */</span>
- BYTE win[_MAX_SS]; <span class="c">/* Disk access window for directory, FAT (and file data at tiny cfg) */</span>
-} FATFS;
-</pre>
-</div>
-
-<p class="foot"><a href="../00index_e.html">Return</a></p>
-</body>
-</html>