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发表于 2014-1-6 18:27:43
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astronomania 发表于 2014-1-6 18:25
_USE_LFN也一直是0,是不是编码转换的问题?
试下 这个 配置 文件:- /*---------------------------------------------------------------------------/
- / FatFs - FAT file system module configuration file R0.09 (C)ChaN, 2011
- /----------------------------------------------------------------------------/
- /
- / CAUTION! Do not forget to make clean the project after any changes to
- / the configuration options.
- /
- /----------------------------------------------------------------------------*/
- #ifndef _FFCONF
- #define _FFCONF 6502 /* Revision ID */
- /*---------------------------------------------------------------------------/
- / Functions and Buffer Configurations
- /----------------------------------------------------------------------------*/
- #define _FS_TINY 0 /* 0:Normal or 1:Tiny */
- /* When _FS_TINY is set to 1, FatFs uses the sector buffer in the file system
- / object instead of the sector buffer in the individual file object for file
- / data transfer. This reduces memory consumption 512 bytes each file object. */
- // 文件系统为标准的还是微型的,默认为标准的(0);
- #define _FS_READONLY 0 /* 0:Read/Write or 1:Read only */
- // 文件系统是否为只读,默认为可读写(0),若只读则f_write、f_sync、 f_unlink、
- // f_mkdir、f_chmod、f_rename、f_truncate和f_getfree不可用;
- #define _FS_MINIMIZE 0 /* 0 to 3 */
- //裁剪文件系统的功能,默认为全部功能(0),若为1、2则会移除大部分链接、目录等功能;
- /* The _FS_MINIMIZE option defines minimization level to remove some functions.
- /
- / 0: Full function.
- / 1: f_stat, f_getfree, f_unlink, f_mkdir, f_chmod, f_truncate and f_rename
- / are removed.
- / 2: f_opendir and f_readdir are removed in addition to 1.
- / 3: f_lseek is removed in addition to 2. */
- #define _USE_STRFUNC 2 /* 0:Disable or 1-2:Enable */
- /* To enable string functions, set _USE_STRFUNC to 1 or 2. */
- //是否允许字符串操作,默认为不允许(0),这个看个人需求,一般情况下设置为1即可,
- //如果工作在windows下,为保证文件兼容性(如换行符’\n’和回车符’\r’)建议将此项设置为2;
- #define _USE_MKFS 0 /* 0:Disable or 1:Enable */
- /* To enable f_mkfs function, set _USE_MKFS to 1 and set _FS_READONLY to 0 */
- //是否允许使用f_mkfs函数,默认为0,用于创建文件夹,建议开启;
- #define _USE_FORWARD 0 /* 0:Disable or 1:Enable */
- /* To enable f_forward function, set _USE_FORWARD to 1 and set _FS_TINY to 1. */
- //用于允许f_forward函数,只有开启tiny文件系统时才用到,该函数用于将读写的数据立即
- //转存到数据流中,以节省RAM空间;
- #define _USE_FASTSEEK 0 /* 0:Disable or 1:Enable */
- /* To enable fast seek feature, set _USE_FASTSEEK to 1. */
- //是否开启快速索引,默认为0,开启后,会使用FIL结构体中的cltbl元素来加快搜索;
- /*---------------------------------------------------------------------------/
- / Locale and Namespace Configurations
- /----------------------------------------------------------------------------*/
- #define _CODE_PAGE 936
- //指定目标系统使用的OEM代码页,默认为日语(932),改为936简体中文;
- //OEM是什么意思呢?在OS编码中,unicode是一种双字节字符编码,无论中文还是英文,
- //或者其他语言统一到2个字节,它与现有的任何编码(ASCII,GB等)都不兼容。
- //WindowsNT(2000)的内核即使用该编码,所有数据进入内核前转换成UNICODE,
- //退出内核后在转换成版本相关的编码(通常称为OEM,在简体中文版下即为GB);
- /* The _CODE_PAGE specifies the OEM code page to be used on the target system.
- / Incorrect setting of the code page can cause a file open failure.
- /
- / 932 - Japanese Shift-JIS (DBCS, OEM, Windows)
- / 936 - Simplified Chinese GBK (DBCS, OEM, Windows) 简体中文
- / 949 - Korean (DBCS, OEM, Windows)
- / 950 - Traditional Chinese Big5 (DBCS, OEM, Windows)
- / 1250 - Central Europe (Windows)
- / 1251 - Cyrillic (Windows)
- / 1252 - Latin 1 (Windows)
- / 1253 - Greek (Windows)
- / 1254 - Turkish (Windows)
- / 1255 - Hebrew (Windows)
- / 1256 - Arabic (Windows)
- / 1257 - Baltic (Windows)
- / 1258 - Vietnam (OEM, Windows)
- / 437 - U.S. (OEM)
- / 720 - Arabic (OEM)
- / 737 - Greek (OEM)
- / 775 - Baltic (OEM)
- / 850 - Multilingual Latin 1 (OEM)
- / 858 - Multilingual Latin 1 + Euro (OEM)
- / 852 - Latin 2 (OEM)
- / 855 - Cyrillic (OEM)
- / 866 - Russian (OEM)
- / 857 - Turkish (OEM)
- / 862 - Hebrew (OEM)
- / 874 - Thai (OEM, Windows)
- / 1 - ASCII only (Valid for non LFN cfg.)
- */
- #define _USE_LFN 0 /* 0 to 3 */ //LFN :Long File Name 长名字
- #define _MAX_LFN 255 /* Maximum LFN length to handle (12 to 255) */
- /* The _USE_LFN option switches the LFN support.
- /
- / 0: Disable LFN feature. _MAX_LFN and _LFN_UNICODE have no effect.
- / 1: Enable LFN with static working buffer on the BSS. Always NOT reentrant.
- / 2: Enable LFN with dynamic working buffer on the STACK.
- / 3: Enable LFN with dynamic working buffer on the HEAP.
- /
- / The LFN working buffer occupies (_MAX_LFN + 1) * 2 bytes. To enable LFN,
- / Unicode handling functions ff_convert() and ff_wtoupper() must be added
- / to the project. When enable to use heap, memory control functions
- / ff_memalloc() and ff_memfree() must be added to the project. */
- #define _LFN_UNICODE 0 /* 0:ANSI/OEM or 1:Unicode */
- /* To switch the character code set on FatFs API to Unicode,
- / enable LFN feature and set _LFN_UNICODE to 1. */
- #define _FS_RPATH 0 /* 0 to 2 */
- //是否允许相对路径,让我选择就不开启,否则逻辑变得复杂不说,代码量也变多了一些;
- /* The _FS_RPATH option configures relative path feature.
- /
- / 0: Disable relative path feature and remove related functions.
- / 1: Enable relative path. f_chdrive() and f_chdir() are available.
- / 2: f_getcwd() is available in addition to 1.
- /
- / Note that output of the f_readdir fnction is affected by this option. */
- /*---------------------------------------------------------------------------/
- / Physical Drive Configurations
- /----------------------------------------------------------------------------*/
- #define _VOLUMES 1
- //磁盘(flash)逻辑卷数,默认为1,不建议修改;
- /* Number of volumes (logical drives) to be used. */
- #define _MAX_SS 512 /* 512, 1024, 2048 or 4096 */
- // 扇区大小,默认512Byte,最大可设置4096Byte;
- /* Maximum sector size to be handled.
- / Always set 512 for memory card and hard disk but a larger value may be
- / required for on-board flash memory, floppy disk and optical disk.
- / When _MAX_SS is larger than 512, it configures FatFs to variable sector size
- / and GET_SECTOR_SIZE command must be implememted to the disk_ioctl function. */
- #define _MULTI_PARTITION 0 /* 0:Single partition, 1/2:Enable multiple partition */
- //分区选项,默认为0,即一个分区,若想要多分区可自行设置;
- /* When set to 0, each volume is bound to the same physical drive number and
- / it can mount only first primaly partition. When it is set to 1, each volume
- / is tied to the partitions listed in VolToPart[]. */
- #define _USE_ERASE 0 /* 0:Disable or 1:Enable */
- //是否允许扇区擦除,默认为0,若开启则要在disk_ioctl函数中添加擦除命令代码;
- /* To enable sector erase feature, set _USE_ERASE to 1. CTRL_ERASE_SECTOR command
- / should be added to the disk_ioctl functio. */
- /*---------------------------------------------------------------------------/
- / System Configurations
- /----------------------------------------------------------------------------*/
- #define _WORD_ACCESS 0 /* 0 or 1 */
- //数据递进格式,默认为0,即以字节为单位递进,兼容性更强,
- //若你的系统最新单位为字(2Byte),则可设为1;
- /* Set 0 first and it is always compatible with all platforms. The _WORD_ACCESS
- / option defines which access method is used to the word data on the FAT volume.
- /
- / 0: Byte-by-byte access.
- / 1: Word access. Do not choose this unless following condition is met.
- /
- / When the byte order on the memory is big-endian or address miss-aligned word
- / access results incorrect behavior, the _WORD_ACCESS must be set to 0.
- / If it is not the case, the value can also be set to 1 to improve the
- / performance and code size.
- */
- /* A header file that defines sync object types on the O/S, such as
- / windows.h, ucos_ii.h and semphr.h, must be included prior to ff.h. */
- #define _FS_REENTRANT 0 /* 0:Disable or 1:Enable */
- #define _FS_TIMEOUT 1000 /* Timeout period in unit of time ticks */
- #define _SYNC_t HANDLE /* O/S dependent type of sync object. e.g. HANDLE, OS_EVENT*, ID and etc.. */
- //这三个选项与文件系统是否允许重入有关,说直白点,就是能否被多线程同时访问,
- //像RTOS中,一般建议开启,_SYNC_t可定义为对应OS中的操作对象,windows下为HANDLE,
- //uCos中为OS_EVENT,vxWorks中为SEMAPHORE。另外,开启后还需要添加ff_req_grant、
- //ff_rel_grant和ff_del_syncobj三个函数,实际上实现的功能就是申请互斥量、
- //释放互斥量和删除互斥量的意思,可以定义OS封装即可;
- /* The _FS_REENTRANT option switches the reentrancy (thread safe) of the FatFs module.
- /
- / 0: Disable reentrancy. _SYNC_t and _FS_TIMEOUT have no effect.
- / 1: Enable reentrancy. Also user provided synchronization handlers,
- / ff_req_grant, ff_rel_grant, ff_del_syncobj and ff_cre_syncobj
- / function must be added to the project. */
- #define _FS_SHARE 0 /* 0:Disable or >=1:Enable */
- /* To enable file shareing feature, set _FS_SHARE to 1 or greater. The value
- defines how many files can be opened simultaneously. */
- // 和上面的类似,表示文件系统最大允许同时打开多少文件,默认为0,即只能打开一个。
- #endif /* _FFCONFIG */
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