FATFS里的FILINFO结构体详解

当调用FatFS中的f_readdir函数返回FILINFO值的时候,大家如果直接看FILINFO里面的值可能看不懂。因为里面的值需要大家转换一下,FILINFO的具体格式如下:
/* File information structure (FILINFO) */

typedef struct {
	FSIZE_t	fsize;			/* File size */
	WORD	fdate;			/* Modified date */
	WORD	ftime;			/* Modified time */
	BYTE	fattrib;		/* File attribute */
#if FF_USE_LFN
	TCHAR	altname[FF_SFN_BUF + 1];/* Altenative file name */
	TCHAR	fname[FF_LFN_BUF + 1];	/* Primary file name */
#else
	TCHAR	fname[12 + 1];	/* File name */
#endif
} FILINFO;
The FILINFO structure holds a file information returned by f_stat and f_readdir function.
typedef struct {
    DWORD fsize;      /* File size */
    WORD  fdate;      /* Last modified date */
    WORD  ftime;      /* Last modified time */
    BYTE  fattrib;    /* Attribute */
    TCHAR fname[13];  /* Short file name (8.3 format) */
#if _USE_LFN
    TCHAR* lfname;    /* Pointer to the LFN buffer */
    int   lfsize;     /* Size of the LFN buffer in unit of TCHAR */
#endif
} FILINFO;
Members
fsize:Indicates size of the file in unit of byte. Always zero for directories.
fdate:Indicates the date that the file was modified or the directory was created.

            bit15:9
                Year origin from 1980 (0..127)
            bit8:5
                Month (1..12)
            bit4:0
                Day (1..31)
ftime:Indicates the time that the file was modified or the directory was created.
            bit15:11
                Hour (0..23)
            bit10:5
                Minute (0..59)
            bit4:0
                Second / 2 (0..29)

fattrib:Indicates the file/directory attribute in combination of AM_DIR, AM_RDO, AM_HID, AM_SYS and                 AM_ARC.


fname[]:Indicates the file/directory name in 8.3 format null-terminated string. It is always returnd with upper           case on  non-LFN configuration but it can be returned with lower case on LFN configuration.


lfname:Pointer to the LFN buffer to store the read LFN. This member must be initialized by application prior          to use this str ucture. Not available on non-LFN configuration.


lfsize:Size of the LFN buffer in unit of TCHAR. This member must be initialized by application prior to use this             structure. Not available on non-LFN configuration.

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