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Add FAT size calculation

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@803 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2008-08-09 15:55:42 +00:00
parent 8a30c6b64a
commit a88a6ecb67
4 changed files with 190 additions and 6 deletions
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include/nuttx/mkfatfs.h
+2 -2
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@@ -49,7 +49,7 @@
#define MKFATFS_DEFAULT_BBCHECK FALSE /* FALSE: No bad block check */
#define MKFATFS_DEFAULT_NFATS 2 /* 2: Default number of FATs */
#define MKFATFS_DEFAULT_FATSIZE 0 /* 0: Autoselect FAT size */
#define MKFATFS_DEFAULT_FATSIZE 0xff /* 0: Autoselect FAT size */
#define MKFATFS_DEFAULT_CLUSTSIZE 0 /* 0: Autoselect cluster size */
#define MKFATFS_DEFAULT_VOLUMELABEL { ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ' }
#define MKFATFS_DEFAULT_BKUPBOOT 0 /* 0: Determine sector number of the backup boot sector */
@@ -86,7 +86,7 @@ struct fat_format_s
{
ubyte ff_nfats; /* Number of FATs */
ubyte ff_fatsize; /* FAT size: 0 (autoselect), 12, 16, or 32 */
ubyte ff_clustsize; /* Number of sectors per cluster: 0 (autoselect) */
ubyte ff_clustshift; /* Log2 of sectors per cluster: 0-5, 0xff (autoselect) */
ubyte ff_volumelabel[11]; /* Volume label */
uint16 ff_backupboot; /* Sector number of the backup boot sector (0=use default)*/
uint16 ff_rootdirentries; /* Number of root directory entries */