fs_confdefaults.h

嵌入式文件系统 ucfs.包含全部源代码

/*
**********************************************************************
*                          Micrium, Inc.
*                      949 Crestview Circle
*                     Weston,  FL 33327-1848
*
*                            uC/FS
*
*             (c) Copyright 2001 - 2003, Micrium, Inc.
*                      All rights reserved.
*
***********************************************************************

----------------------------------------------------------------------
File    : FS_ConfDefault.h
Purpose : File system configuration defaults
--------  END-OF-HEADER  ---------------------------------------------
*/

#ifndef _FS_CONFDEFAULT_H_
#define _FS_CONFDEFAULT_H_

#include "fs_conf.h"

/*********************************************************************
*
*       define global data types
*
**********************************************************************
*/
#ifndef FS_U32
  #define FS_U32        unsigned long       /* 32 bit unsigned */
#endif
#ifndef FS_I32
  #define FS_I32          signed long       /* 32 bit   signed */
#endif
#ifndef FS_U16
  #define FS_U16        unsigned short      /* 16 bit unsigned */
#endif
#ifndef FS_I16
  #define FS_I16          signed short      /* 16 bit   signed */
#endif
#ifndef FS_U8
  #define FS_U8         unsigned char       /*  8 bit unsigned */
#endif
#ifndef FS_SIZE_T
  #define FS_SIZE_T     FS_U32
#endif

/*********************************************************************
*
*       Defaults for optimizations
*
**********************************************************************
*/
#ifndef FS_IS_LITTLE_ENDIAN
  #define FS_IS_LITTLE_ENDIAN   0
#endif

#if FS_IS_LITTLE_ENDIAN
  #define FS_WRITE_U16(pBuffer, Data)  *(FS_U16*)pBuffer = Data
  #define FS_READ_U16(pBuffer)         (*(FS_U16*)pBuffer)
#else
  #define FS_WRITE_U16(pBuffer, Data)             \
              * (FS_U8*)pBuffer      = Data;      \
              *((FS_U8*)pBuffer + 1) = Data >> 8;
  #define FS_READ_U16(pBuffer)     ((*(FS_U8*)pBuffer)  |  (*((FS_U8*)pBuffer + 1) << 8))
#endif

/*********************************************************************
*
*       Device Driver Support
*
**********************************************************************
*/

#ifndef   FS_USE_SMC_DRIVER
  #define FS_USE_SMC_DRIVER       0    /* SmartMedia card driver       */
#endif
#ifndef   FS_USE_IDE_DRIVER
  #define FS_USE_IDE_DRIVER       0    /* IDE driver                   */
#endif
#ifndef   FS_USE_WINDRIVE_DRIVER
  #define FS_USE_WINDRIVE_DRIVER  0    /* Windows Logical Drive driver */
#endif
#ifndef   FS_USE_RAMDISK_DRIVER
  #define FS_USE_RAMDISK_DRIVER   0    /* RAM Disk driver              */
#endif
#ifndef   FS_USE_MMC_DRIVER
  #define FS_USE_MMC_DRIVER       0    /* MMC/SD card driver           */
#endif
#ifndef   FS_USE_FLASH_DRIVER
  #define FS_USE_FLASH_DRIVER     0    /* Generic flash driver         */
#endif

#ifndef   FS_USE_GENDEV_DRIVER
  #define FS_USE_GENDEV_DRIVER    0   /* Generic device driver         */
#endif

#ifndef   FS_USE_SFLASH_DRIVER
  #define FS_USE_SFLASH_DRIVER 0
#endif

#if (FS_USE_SMC_DRIVER     == 0) && (FS_USE_IDE_DRIVER == 0)        && \
    (FS_USE_RAMDISK_DRIVER == 0) && (FS_USE_MMC_DRIVER == 0)        && \
    (FS_USE_FLASH_DRIVER   == 0) && (FS_USE_WINDRIVE_DRIVER   == 0) && \
    (FS_USE_GENDEV_DRIVER  == 0) && (FS_USE_SFLASH_DRIVER == 0)
  #error Please define which Medium you want to use
#endif

#if (!defined(_WIN32) && (FS_USE_WINDRIVE_DRIVER))
  #error Windows Logical Drive driver needs Windows API
#endif


/*********************************************************************
*
*       File system defaults
*
**********************************************************************
*/

#ifndef   FS_MAXOPEN
  #define FS_MAXOPEN              2     /* Maximum number of file handles */
#endif

#ifndef   FS_POSIX_DIR_SUPPORT
  #define FS_POSIX_DIR_SUPPORT    1     /* POSIX 1003.1 like directory support */
#endif

#ifndef   FS_DIR_MAXOPEN                /* Maximum number of directory handles */
  #define FS_DIR_MAXOPEN          FS_POSIX_DIR_SUPPORT
#endif

#ifndef   FS_SUPPORT_FAT
  #define FS_SUPPORT_FAT         1   /* Support the FAT file system if enabled */
#endif

#ifndef   FS_SUPPORT_EFS
  #define FS_SUPPORT_EFS         0   /* Support the EFS file system if enabled */
#endif

#ifndef   FS_SUPPORT_MULTIPLE_FS
  #define FS_SUPPORT_MULTIPLE_FS 0   /* Currently, only FAT is supported -> No need to switch it on */
#endif

#ifndef   FS_SUPPORT_BURST           /* Burst support, allows read/write of multiple sectors at a time (speed opt.) */
  #define FS_SUPPORT_BURST (FS_USE_IDE_DRIVER || FS_USE_SMC_DRIVER || FS_USE_WINDRIVE_DRIVER || FS_USE_RAMDISK_DRIVER)
#endif

#ifndef   FS_SUPPORT_VAR_SECTOR_SIZE
  #define FS_SUPPORT_VAR_SECTOR_SIZE 0    /* Support for variabled, non standard sector sizes (!= 512) */
#endif

#ifndef   FS_SUPPORT_FREE_SECTOR
  #define FS_SUPPORT_FREE_SECTOR  FS_USE_FLASH_DRIVER      /* Informs lower layer of unused sectors ... Makes sense only for drivers which use it */
#endif

#ifndef   FS_SUPPORT_CACHE
  #define FS_SUPPORT_CACHE 0
#endif

#if (FS_SUPPORT_EFS==1) && (FS_SUPPORT_FAT==1)
  #error EFS and FAT can not be used simultaneously
#endif

/*********************************************************************
*
*       FAT File System Layer defines
*
*  For each media in your system using FAT, the file system reserves
*  memory to keep required information of the boot sector of that media.
*  FS_MAXDEV is the number of device drivers in your system used
*  with FAT, FS_FAT_MAXUNIT is the maximum number of logical units
*  supported by one of the activated drivers.
*/

/* For compatibility */
#ifdef  FS_FAT_NOFORMAT                 /* 1 disables code for formatting a media */
  #define FS_FAT_SUPPORT_FORMAT  (!FS_FAT_NOFORMAT)
#endif

/* For compatibility */
#ifdef    FS_FAT_NOFAT32                  /* 1 disables FAT32 support */
  #define FS_FAT_SUPPORT_FAT32      (!FS_FAT_NOFAT32)
#endif

#ifndef   FS_FAT_SUPPORT_FORMAT           /* 0 disables code for formatting a media */
  #define FS_FAT_SUPPORT_FORMAT     1
#endif

#ifndef   FS_FAT_SUPPORT_FAT32            /* 0  disables FAT32 support */
  #define FS_FAT_SUPPORT_FAT32      1
#endif
#ifndef   FS_FAT_DISKINFO                 /* 0 disables command FS_CMD_GET_DISKFREE */
  #define FS_FAT_DISKINFO           1
#endif

#ifndef FS_FAT_SUPPORT_LFN                /* 1 enables long file name support */
  #define FS_FAT_SUPPORT_LFN        0
#endif

#ifndef   FS_FAT_FWRITE_UPDATE_DIR       /* 1:  FS_FWrite updates directory entry (safer, but slower) */
                                         /* 0:  Directory entry is updated by FS_FClose (faster) */
  #define FS_FAT_FWRITE_UPDATE_DIR  1
#endif

#ifndef   FS_SEC_SIZE
  #define FS_SEC_SIZE                 512  /* standard value for FAT system. */
#endif

#ifndef   FS_MAINTAIN_FAT_COPY
  #define FS_MAINTAIN_FAT_COPY      0
#endif


/*********************************************************************
*
*       EFS File System Layer defines
*
*/
#ifndef   FS_EFS_SUPPORT_FORMAT                 /* 0 disables code for formatting a media */
  #define FS_EFS_SUPPORT_FORMAT     1
#endif

#ifndef   FS_EFS_SUPPORT_DISKINFO                 /* 0 disables command FS_CMD_GET_DISKFREE */
  #define FS_EFS_SUPPORT_DISKINFO   1
#endif

#ifndef   FS_EFS_FWRITE_UPDATE_DIR        /* 1 FS_FWrite modifies directory (default), 0 directory is modified by FS_FClose */
  #define FS_EFS_FWRITE_UPDATE_DIR  0
#endif

#ifndef   FS_EFS_CASE_SENSITIVE
  #define FS_EFS_CASE_SENSITIVE     0    /* Should the file/directory names be case sensitively compared */
#endif


/*********************************************************************
*
*       File system support sector access
*/

#ifndef    FS_SUPPORT_SEC_ACCESS
  #define  FS_SUPPORT_SEC_ACCESS 1
#endif


/*********************************************************************
*
*       Directory name length
*/
#ifndef FS_DIRNAME_MAX
  #if FS_SUPPORT_FAT
    #if FS_FAT_SUPPORT_LFN
      #define FS_DIRNAME_MAX            150  /* Maximum size of a directory name */
    #else
      #define FS_DIRNAME_MAX             13  /* Maximum size of a directory name */
    #endif
  #endif
  #if FS_SUPPORT_EFS
    #define FS_DIRNAME_MAX              150  /* Maximum size of a directory name */
  #endif
#endif