avrfat16.h

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#include "types.h"
#include "uart.h"

#define PARTITION_START         446     ///< Start address of partition 1 in MBR

//-----------------------------------------------------------------------------
// FAT32 File Attributes and Types
//-----------------------------------------------------------------------------
#define FILE_ATTR_READ_ONLY     0x01
#define FILE_ATTR_HIDDEN                0x02
#define FILE_ATTR_SYSTEM                0x04
#define FILE_ATTR_SYSHID                0x06
#define FILE_ATTR_VOLUME_ID     0x08
#define FILE_ATTR_DIRECTORY             0x10
#define FILE_ATTR_ARCHIVE               0x20
#define FILE_ATTR_LFN_TEXT              0x0F
#define FILE_ATTR_LFN_MASK              0x3F
#define FILE_HEADER_BLANK               0x00
#define FILE_HEADER_DELETED             0xE5
#define FILE_TYPE_DIR                   0x10
#define FILE_TYPE_FILE                  0x20
#define FILE_TYPE_MP3                   0x55
#define FAT16_LDIR_Ord                  0
#define FAT16_LDIR_Name1                1
#define FAT16_LDIR_Attr                 11
#define FAT16_LDIR_Type                 12
#define FAT16_LDIR_Chksum               13
#define FAT16_LDIR_Name2                14
#define FAT16_LDIR_FstClusLO    26
#define FAT16_LDIR_Name3                28

// For ID3 tags
#define LFN_TYPE_INDEX        208
#define LFN_TYPE_FILENAME     0x00        ///< No bits set
#define LFN_TYPE_ID3_TITLE    0x01        ///< Bit 0
#define LFN_TYPE_ID3_ARTIST   0x02        ///< Bit 1
#define LFN_BUFFER_LENGTH     208
#define LFN_TITLE_INDEX       0
#define LFN_TITLE_LENGTH      100      ///< Title length including '\0'
#define LFN_ARTIST_INDEX      100
#define LFN_ARTIST_LENGTH     100      ///< Artist length including '\0'
#define LFN_FREE_INDEX        200
#define LFN_FREE_LEN          8        


uint32  FAT16_fat_begin_lba;
uint32  FAT16_cluster_begin_lba;
uint8   FAT16_sectors_per_cluster;
uint32  FAT16_dir_first_sector;
uint32  FAT16_root_dir_first_sector;
uint32  FAT16_parent_dir_first_sector;

uint8   FAT16_filetype;
uint8   FAT16_longfilename[LFN_BUFFER_LENGTH+1]; 
uint8   FAT16_LFNTitleLen;
uint8   FAT16_LFNArtistLen;
uint16  FAT16_entryMAX;         
uint16  FAT16_entryMIN;         

uint8 *FAT_buffer; 
uint8 *FAT_scratch; 
uint8 (*FAT_read)(uint32 lba); 
uint8 (*FAT_write)(uint32 lba);

uint8 FAT_initFat16(void); 
uint8 FAT_readCluster(uint32 cluster, uint8 sector_offset); 
//uint8 FAT_get_label(uint8 label[]); 
uint32 FAT_NextCluster(uint32 cluster); //
//uint8 FAT_NextnCluster(uint16 cluster, uint16 fatBuf[], uint8 buffer_size);
//uint8 FAT_getLongFilename(uint32 filenumber);
uint32 FAT_getNextSong(uint32 filenumber,uint32 dir_lba);
uint32 FAT_getPrevSong(uint32 filenumber,uint32 dir_lba);

uint32 FAT_getNumberedSong(char songNumber,uint32 dir_lba);


uint8 FAT_ChkSum(uint8 *pFcbName); 

//uint8 FAT_readRoot(uint32 filenumber);

uint8   FAT_readFile(uint32 filenumber, uint32 dir_first_sector);

uint8 FAT_scanDir(uint32 directory_cluster);

uint8 FAT_scanDir_lba(uint32 lba_addr);

uint32 FAT_cluster2lba(uint32 cluster);

uint32 FAT_lba2cluster(uint32 lba_addr);

uint32 FAT_getParentDir(uint32 lba_addr);

void FAT_Scratch2Cluster(void);