FATFS.H

#ifndef __FATFS_H
#define __FATFS_H

typedef struct
{
    u32     FS_Size;
    u32     FAT_Addr;
    u32     Data_Addr;
    u32     Sec_PerFAT;
    u8      Sec_PerClus;
    u32     Bytes_PerClus;
    u32     Root_Clus;
} FATFS;

typedef struct
{
    u8 *Name;           //文件名
    u8  Attrib;         //文件属性
    u16 CurSec;         //当前扇区
    u32 CurClus;        //当前簇
    u32 Size;           //文件大小
    u32 FstClus;        //文件起始簇
    u32 DirEntryAddr;   //文件目录项地址
} FS_Object;

typedef u8  FS_Status;

#define FAT_NUM         2
#define BYTES_PERSEC    512

#define FILE_NOTEXIST   0X00
#define FILE_EXIST      0X01
#define NAME_ERROR      0X02
#define FILE_SUCCESSED  0X03
#define FILE_FAILED     0X04

#define FST_CLUS    0x00

#define EMPTY       0X00
#define DELETED     0XE5

#define READ_ONLY   0X01
#define HIDDEN      0X02
#define SYSTEM      0X04
#define VOLUME_ID   0X08
#define DIR         0X10
#define ARCHIVE     0X20
#define LONG_NAME   0X0F
#define FILE        ARCHIVE

#define LAST_LONGENTRY  0X40

#define FSINFO_ADDR 512
#define BPB_ADDR    0
#define FS_EOF      0X0FFFFFFF
#define BAD_CLUS    0X0FFFFFF7
#define DIRENT_SIZE 0X20

#define SUCCESSED   1
#define FAILED      0

void FATFS_Init(void);
void FS_Test(void);

FS_Status   Search_inDir(FS_Object *CurDir, FS_Object *Target, u8 *Target_Name, u8 Object);
u8         *ReadFile(FS_Object *Target_File);
void        SetFileClustoFst(FS_Object *Target_File);
FS_Status   OpenFile(FS_Object *Target, u8 *FullName);
void        LsDir(FS_Object *CurDir);

FS_Status   CreateNewObject(FS_Object *CurDir, FS_Object *Target, u8 *Target_Name, u8 Object);
void        WriteFile(FS_Object *Target_File, u8 *dataBuf, u32 dataLength);

#endif