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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [Common/] [FileSystem/] [FatFs-0.7e/] [doc/] [ja/] [sfatfs.html] - Rev 606

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<!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 - FATFS</title>
</head>
 
<body>
 
<div class="para">
<h2>FATFS</h2>
<p><tt>FATFS</tt>構造体は、個々の論理ドライブのダイナミック・ワーク・エリアを保持し、f_mount()でFatFsモジュールに登録されます。標準状態では次のようなメンバになっています。アプリケーションから書き換え可能なメンバはありません。</p>
 
<pre>
typedef struct _FATFS_ {
    BYTE    fs_type;      /* FAT sub type */
    BYTE    drive;        /* Physical drive number */
    BYTE    csize;        /* Number of sectors per cluster */
    BYTE    n_fats;       /* Number of FAT copies */
    BYTE    wflag;        /* win[] dirty flag (1:must be written back) */
    BYTE    fsi_flag;     /* fsinfo dirty flag (1:must be written back) */
    WORD    id;           /* File system mount ID */
    WORD    n_rootdir;    /* Number of root directory entries (0 on FAT32) */
#if _FS_REENTRANT
    HANDLE  h_mutex;      /* Handle to the mutex (Platform dependent) */
#endif
#if _MAX_SS != 512
    WORD    s_size;       /* Sector size */
#endif
#if !_FS_READONLY
    DWORD   last_clust;   /* Last allocated cluster */
    DWORD   free_clust;   /* Number of free clusters */
    DWORD   fsi_sector;   /* fsinfo sector */
#endif
    DWORD   sects_fat;    /* Sectors per fat */
    DWORD   max_clust;    /* Maximum cluster# + 1. Number of clusters is max_clust - 2 */
    DWORD   fatbase;      /* FAT start sector */
    DWORD   dirbase;      /* Root directory start sector (Cluster# on FAT32) */
    DWORD   database;     /* Data start sector */
    DWORD   winsect;      /* Current sector appearing in the win[] */
    BYTE    win[_MAX_SS]; /* Disk access window for Directory/FAT */
} FATFS;
</pre>
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