savelij13
238747ef97
- Added FAT12. Removed unbuffered mode. - Fixed a problem on small (<32M) patition.
60 lines
2.3 KiB
HTML
60 lines
2.3 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="ja">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=Shift_JIS">
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<meta http-equiv="Content-Style-Type" content="text/css">
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<link rel="up" title="FatFs" href="../00index_j.html">
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<link rel="stylesheet" href="../css_j.css" type="text/css" media="screen" title="ELM Default">
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<title>FatFs - FATFS</title>
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</head>
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<body>
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<div class="para">
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<h2>FATFS</h2>
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<p><tt>FATFS</tt>構造体は、FatFsモジュールのダイナミックワークエリアを保持し、アプリケーション側で確保・管理されます。アプリケーションから変更可能なメンバはありません。</p>
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<h4>FatFs</h4>
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<pre>
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typedef struct _FATFS {
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BYTE fs_type; // FAT type
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BYTE files; // Number of files currently opend
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BYTE sects_clust; // Sectors per cluster
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BYTE n_fats; // Number of FAT copies
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WORD n_rootdir; // Number of root directory entry
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BYTE winflag; // win[] dirty flag (1:must be written back)
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BYTE pad1;
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DWORD sects_fat; // Sectors per fat
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DWORD max_clust; // Maximum cluster# + 1
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DWORD fatbase; // FAT start sector
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DWORD dirbase; // Root directory start sector (cluster# for FAT32)
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DWORD database; // Data start sector
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DWORD winsect; // Current sector# appearing in the win[]
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BYTE win[512]; // Disk access window for Directory/FAT area
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} FATFS;
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</pre>
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<h4>Tiny-FatFs</h4>
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<pre>
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typedef struct _FATFS {
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BYTE fs_type; // FAT type
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BYTE files; // Number of files currently opend
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BYTE sects_clust; // Sectors per cluster
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BYTE n_fats; // Number of FAT copies
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WORD n_rootdir; // Number of root directory entry
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BYTE winflag; // win[] dirty flag (1:must be written back)
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BYTE pad1;
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WORD sects_fat; // Sectors per fat
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WORD max_clust; // Maximum cluster# + 1
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DWORD fatbase; // FAT start sector
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DWORD dirbase; // Root directory start sector (cluster# for FAT32)
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DWORD database; // Data start sector
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DWORD winsect; // Current sector# appearing in the win[]
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BYTE win[512]; // Disk access window
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} FATFS;
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</pre>
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</div>
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<p class="foot"><a href="../00index_j.html">戻る</a></p>
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</body>
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</html>
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