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@ -22,6 +22,8 @@ |
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#ifndef SdFatStructs_h |
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#define SdFatStructs_h |
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#define PACKED __attribute__((__packed__)) |
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/**
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* \file |
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* \brief FAT file structures |
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@ -95,7 +97,7 @@ struct partitionTable { |
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uint32_t firstSector; |
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/** Length of the partition, in blocks. */ |
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uint32_t totalSectors; |
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}; |
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} PACKED; |
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/** Type name for partitionTable */ |
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typedef struct partitionTable part_t; |
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//------------------------------------------------------------------------------
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@ -119,7 +121,7 @@ struct masterBootRecord { |
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uint8_t mbrSig0; |
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/** Second MBR signature byte. Must be 0XAA */ |
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uint8_t mbrSig1; |
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}; |
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} PACKED; |
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/** Type name for masterBootRecord */ |
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typedef struct masterBootRecord mbr_t; |
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//------------------------------------------------------------------------------
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@ -247,7 +249,7 @@ struct fat_boot { |
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uint8_t bootSectorSig0; |
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/** must be 0XAA */ |
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uint8_t bootSectorSig1; |
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}; |
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} PACKED; |
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/** Type name for FAT Boot Sector */ |
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typedef struct fat_boot fat_boot_t; |
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//------------------------------------------------------------------------------
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@ -401,7 +403,7 @@ struct fat32_boot { |
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uint8_t bootSectorSig0; |
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/** must be 0XAA */ |
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uint8_t bootSectorSig1; |
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}; |
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} PACKED; |
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/** Type name for FAT32 Boot Sector */ |
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typedef struct fat32_boot fat32_boot_t; |
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//------------------------------------------------------------------------------
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@ -441,7 +443,7 @@ struct fat32_fsinfo { |
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uint8_t reserved2[12]; |
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/** must be 0X00, 0X00, 0X55, 0XAA */ |
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uint8_t tailSignature[4]; |
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}; |
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} PACKED; |
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/** Type name for FAT32 FSINFO Sector */ |
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typedef struct fat32_fsinfo fat32_fsinfo_t; |
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//------------------------------------------------------------------------------
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@ -539,12 +541,46 @@ struct directoryEntry { |
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uint16_t firstClusterLow; |
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/** 32-bit unsigned holding this file's size in bytes. */ |
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uint32_t fileSize; |
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}; |
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} PACKED; |
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/**
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* \struct directoryVFATEntry |
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* \brief VFAT long filename directory entry |
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* |
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* directoryVFATEntries are found in the same list as normal directoryEntry. |
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* But have the attribute field set to DIR_ATT_LONG_NAME. |
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* |
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* Long filenames are saved in multiple directoryVFATEntries. |
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* Each entry containing 13 UTF-16 characters. |
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*/ |
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struct directoryVFATEntry { |
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/**
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* Sequence number. Consists of 2 parts: |
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* bit 6: indicates first long filename block for the next file |
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* bit 0-4: the position of this long filename block (first block is 1) |
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*/ |
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uint8_t sequenceNumber; |
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/** First set of UTF-16 characters */ |
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uint16_t name1[5];//UTF-16
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/** attributes (at the same location as in directoryEntry), always 0x0F */ |
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uint8_t attributes; |
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/** Reserved for use by Windows NT. Always 0. */ |
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uint8_t reservedNT; |
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/** Checksum of the short 8.3 filename, can be used to checked if the file system as modified by a not-long-filename aware implementation. */ |
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uint8_t checksum; |
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/** Second set of UTF-16 characters */ |
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uint16_t name2[6];//UTF-16
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/** firstClusterLow is always zero for longFilenames */ |
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uint16_t firstClusterLow; |
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/** Third set of UTF-16 characters */ |
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uint16_t name3[2];//UTF-16
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} PACKED; |
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//------------------------------------------------------------------------------
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// Definitions for directory entries
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//
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/** Type name for directoryEntry */ |
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typedef struct directoryEntry dir_t; |
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/** Type name for directoryVFATEntry */ |
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typedef struct directoryVFATEntry vfat_t; |
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/** escape for name[0] = 0XE5 */ |
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uint8_t const DIR_NAME_0XE5 = 0X05; |
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/** name[0] value for entry that is free after being "deleted" */ |
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@ -607,4 +643,4 @@ static inline uint8_t DIR_IS_FILE_OR_SUBDIR(const dir_t* dir) { |
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#endif // SdFatStructs_h
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#endif |
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#endif |
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