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<h2>FATFS</h2>
<p>The <tt>FATFS</tt> structure holds dynamic work area of the FatFs modlue and it is allocated by an application program. There is no members that can be changed from the application program.</p>
<h4>FatFs</h4>
<pre>
typedef struct _FATFS {
BYTE fs_type; // FAT type
BYTE files; // Number of files currently opend
BYTE sects_clust; // Sectors per cluster
BYTE n_fats; // Number of FAT copies
WORD n_rootdir; // Number of root directory entry (always 0 in FAT32)
BYTE winflag; // win[] dirty flag (1:must be written back)
BYTE pad1;
DWORD sects_fat; // Sectors per fat
DWORD max_clust; // Maximum cluster# + 1
DWORD fatbase; // FAT start sector
DWORD dirbase; // Root directory start sector (cluster# for FAT32)
DWORD database; // Data start sector
DWORD winsect; // Current sector# appearing in the win[]
BYTE win[512]; // Disk access window for directory and FAT
} FATFS;
</pre>
<h4>Tiny-FatFs</h4>
<pre>
typedef struct _FATFS {
BYTE fs_type; // FAT type
BYTE files; // Number of files currently opend
BYTE sects_clust; // Sectors per cluster
BYTE n_fats; // Number of FAT copies
WORD n_rootdir; // Number of root directory entry
BYTE winflag; // win[] dirty flag (1:must be written back)
BYTE pad1;
WORD sects_fat; // Sectors per fat
WORD max_clust; // Maximum cluster# + 1
DWORD fatbase; // FAT start sector
DWORD dirbase; // Root directory start sector
DWORD database; // Data start sector
DWORD winsect; // Current sector# appearing in the win[]
BYTE win[512]; // Disk access window for directory, FAT and file
} FATFS;
</pre>
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