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/*
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**************************************************************************************************************
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* NXP USB Host Stack
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*
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* (c) Copyright 2008, NXP SemiConductors
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* (c) Copyright 2008, OnChip Technologies LLC
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* All Rights Reserved
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*
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* www.nxp.com
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* www.onchiptech.com
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*
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* File : usbhost_fat.h
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* Programmer(s) : Ravikanth.P
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* Version :
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*
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**************************************************************************************************************
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*/
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#ifndef USBHOST_FAT_H
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#define USBHOST_FAT_H
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/*
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**************************************************************************************************************
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* INCLUDE HEADER FILES
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**************************************************************************************************************
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*/
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#include "usbhost_inc.h"
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/*
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**************************************************************************************************************
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* FAT DEFINITIONS
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**************************************************************************************************************
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*/
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#define FAT_16 1
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#define LAST_ENTRY 1
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#define FREE_ENTRY 2
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#define LFN_ENTRY 3
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#define SFN_ENTRY 4
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#define RDONLY 1
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#define RDWR 2
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/*
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**************************************************************************************************************
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* TYPE DEFINITIONS
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**************************************************************************************************************
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*/
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typedef struct boot_sec {
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USB_INT32U BootSecOffset; /* Offset of the boot sector from sector 0 */
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USB_INT16U BytsPerSec; /* Bytes per sector */
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USB_INT08U SecPerClus; /* Sectors per cluster */
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USB_INT32U BytsPerClus; /* Bytes per cluster */
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USB_INT16U RsvdSecCnt; /* Reserved sector count */
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USB_INT08U NumFATs; /* Number of FAT copies */
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USB_INT16U RootEntCnt; /* Root entry count */
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USB_INT16U TotSec16; /* Total sectors in the disk. !=0 if TotSec32 = 0 */
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USB_INT32U TotSec32; /* Total sectors in the disk. !=0 if TotSec16 = 0 */
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USB_INT16U FATSz16; /* Sectors occupied by single FAT table */
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USB_INT08U FATType; /* File system type */
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USB_INT32U RootDirSec; /* Sectors occupied by root directory */
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USB_INT32U RootDirStartSec; /* Starting sector of the root directory */
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USB_INT32U FirstDataSec; /* Starting sector of the first data cluster */
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} BOOT_SEC;
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typedef struct file_entry {
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USB_INT32U FileSize; /* Total size of the file */
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USB_INT16U CurrClus; /* Current cluster of the cluster offset */
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USB_INT32U CurrClusOffset; /* Current cluster offset */
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USB_INT32U EntrySec; /* Sector where the file entry is located */
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USB_INT32U EntrySecOffset; /* Offset in the entry sector from where the file is located */
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USB_INT08U FileStatus; /* File's open status */
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} FILE_ENTRY;
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/*
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**************************************************************************************************************
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* FUNCTION PROTOTYPES
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**************************************************************************************************************
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*/
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USB_INT32S FAT_Init (void);
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USB_INT08U FAT_GetFATType (void);
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void PrintBootSec (void);
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USB_INT32S FILE_Open ( USB_INT08U *file_name,
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USB_INT08U flags);
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USB_INT32S FAT_FindEntry ( USB_INT08U *ent_name_given,
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FILE_ENTRY *entry);
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void FAT_GetSFN (volatile USB_INT08U *entry,
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USB_INT08U *name);
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void FAT_GetSfnName (volatile USB_INT08U *entry,
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USB_INT08U *name);
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void FAT_GetSfnExt (volatile USB_INT08U *entry,
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USB_INT08U *ext_ptr);
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USB_INT32S FAT_StrCaseCmp ( USB_INT08U *str1,
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USB_INT08U *str2);
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USB_INT32U FAT_ChkEntType (volatile USB_INT08U *ent);
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USB_INT32U FAT_ClusRead ( USB_INT16U curr_clus,
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USB_INT32U clus_offset,
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volatile USB_INT08U *buffer,
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USB_INT32U num_bytes);
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USB_INT32U FILE_Read ( USB_INT32S fd,
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volatile USB_INT08U *buffer,
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USB_INT32U num_bytes);
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USB_INT16U FAT_GetNextClus ( USB_INT16U clus_no);
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USB_INT32U FAT_ClusWrite ( USB_INT16U curr_clus,
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USB_INT32U clus_offset,
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volatile USB_INT08U *buffer,
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USB_INT32U num_bytes);
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USB_INT32U FILE_Write ( USB_INT32S fd,
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volatile USB_INT08U *buffer,
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USB_INT32U num_bytes);
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void FAT_UpdateEntry ( FILE_ENTRY *entry);
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void FAT_UpdateFAT ( USB_INT16U curr_clus,
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USB_INT16U value);
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USB_INT16U FAT_GetFreeClus (void);
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USB_INT32S FAT_GetFreeEntry( FILE_ENTRY *entry);
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void FAT_PutSFN ( USB_INT08U *ent_name_given,
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FILE_ENTRY *entry);
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USB_INT32S FAT_CreateEntry ( USB_INT08U *ent_name_given,
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FILE_ENTRY *entry);
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void FILE_Close ( USB_INT32S fd);
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USB_INT16U FAT_GetEndClus ( USB_INT16U clus_no);
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#endif
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Ilya I