SD File System

Committer:
lucydamon
Date:
Thu Dec 01 23:57:53 2022 +0000
Revision:
0:4c17779d2cc6
1st commit- code but not working needs some debugs;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lucydamon 0:4c17779d2cc6 1 /*---------------------------------------------------------------------------/
lucydamon 0:4c17779d2cc6 2 / FatFs - FAT file system module configuration file R0.11a (C)ChaN, 2015
lucydamon 0:4c17779d2cc6 3 /---------------------------------------------------------------------------*/
lucydamon 0:4c17779d2cc6 4
lucydamon 0:4c17779d2cc6 5 #define _FFCONF 64180 /* Revision ID */
lucydamon 0:4c17779d2cc6 6
lucydamon 0:4c17779d2cc6 7 #define FFS_DBG 0
lucydamon 0:4c17779d2cc6 8
lucydamon 0:4c17779d2cc6 9 /*---------------------------------------------------------------------------/
lucydamon 0:4c17779d2cc6 10 / Function Configurations
lucydamon 0:4c17779d2cc6 11 /---------------------------------------------------------------------------*/
lucydamon 0:4c17779d2cc6 12
lucydamon 0:4c17779d2cc6 13 #define _FS_READONLY 0
lucydamon 0:4c17779d2cc6 14 /* This option switches read-only configuration. (0:Read/Write or 1:Read-only)
lucydamon 0:4c17779d2cc6 15 / Read-only configuration removes writing API functions, f_write(), f_sync(),
lucydamon 0:4c17779d2cc6 16 / f_unlink(), f_mkdir(), f_chmod(), f_rename(), f_truncate(), f_getfree()
lucydamon 0:4c17779d2cc6 17 / and optional writing functions as well. */
lucydamon 0:4c17779d2cc6 18
lucydamon 0:4c17779d2cc6 19
lucydamon 0:4c17779d2cc6 20 #define _FS_MINIMIZE 0
lucydamon 0:4c17779d2cc6 21 /* This option defines minimization level to remove some basic API functions.
lucydamon 0:4c17779d2cc6 22 /
lucydamon 0:4c17779d2cc6 23 / 0: All basic functions are enabled.
lucydamon 0:4c17779d2cc6 24 / 1: f_stat(), f_getfree(), f_unlink(), f_mkdir(), f_chmod(), f_utime(),
lucydamon 0:4c17779d2cc6 25 / f_truncate() and f_rename() function are removed.
lucydamon 0:4c17779d2cc6 26 / 2: f_opendir(), f_readdir() and f_closedir() are removed in addition to 1.
lucydamon 0:4c17779d2cc6 27 / 3: f_lseek() function is removed in addition to 2. */
lucydamon 0:4c17779d2cc6 28
lucydamon 0:4c17779d2cc6 29
lucydamon 0:4c17779d2cc6 30 #define _USE_STRFUNC 0
lucydamon 0:4c17779d2cc6 31 /* This option switches string functions, f_gets(), f_putc(), f_puts() and
lucydamon 0:4c17779d2cc6 32 / f_printf().
lucydamon 0:4c17779d2cc6 33 /
lucydamon 0:4c17779d2cc6 34 / 0: Disable string functions.
lucydamon 0:4c17779d2cc6 35 / 1: Enable without LF-CRLF conversion.
lucydamon 0:4c17779d2cc6 36 / 2: Enable with LF-CRLF conversion. */
lucydamon 0:4c17779d2cc6 37
lucydamon 0:4c17779d2cc6 38
lucydamon 0:4c17779d2cc6 39 #define _USE_FIND 0
lucydamon 0:4c17779d2cc6 40 /* This option switches filtered directory read feature and related functions,
lucydamon 0:4c17779d2cc6 41 / f_findfirst() and f_findnext(). (0:Disable or 1:Enable) */
lucydamon 0:4c17779d2cc6 42
lucydamon 0:4c17779d2cc6 43
lucydamon 0:4c17779d2cc6 44 #define _USE_MKFS 1
lucydamon 0:4c17779d2cc6 45 /* This option switches f_mkfs() function. (0:Disable or 1:Enable) */
lucydamon 0:4c17779d2cc6 46
lucydamon 0:4c17779d2cc6 47
lucydamon 0:4c17779d2cc6 48 #define _USE_FASTSEEK 0
lucydamon 0:4c17779d2cc6 49 /* This option switches fast seek feature. (0:Disable or 1:Enable) */
lucydamon 0:4c17779d2cc6 50
lucydamon 0:4c17779d2cc6 51
lucydamon 0:4c17779d2cc6 52 #define _USE_LABEL 0
lucydamon 0:4c17779d2cc6 53 /* This option switches volume label functions, f_getlabel() and f_setlabel().
lucydamon 0:4c17779d2cc6 54 / (0:Disable or 1:Enable) */
lucydamon 0:4c17779d2cc6 55
lucydamon 0:4c17779d2cc6 56
lucydamon 0:4c17779d2cc6 57 #define _USE_FORWARD 0
lucydamon 0:4c17779d2cc6 58 /* This option switches f_forward() function. (0:Disable or 1:Enable)
lucydamon 0:4c17779d2cc6 59 / To enable it, also _FS_TINY need to be set to 1. */
lucydamon 0:4c17779d2cc6 60
lucydamon 0:4c17779d2cc6 61
lucydamon 0:4c17779d2cc6 62 /*---------------------------------------------------------------------------/
lucydamon 0:4c17779d2cc6 63 / Locale and Namespace Configurations
lucydamon 0:4c17779d2cc6 64 /---------------------------------------------------------------------------*/
lucydamon 0:4c17779d2cc6 65
lucydamon 0:4c17779d2cc6 66 #define _CODE_PAGE 850
lucydamon 0:4c17779d2cc6 67 /* This option specifies the OEM code page to be used on the target system.
lucydamon 0:4c17779d2cc6 68 / Incorrect setting of the code page can cause a file open failure.
lucydamon 0:4c17779d2cc6 69 /
lucydamon 0:4c17779d2cc6 70 / 1 - ASCII (No extended character. Non-LFN cfg. only)
lucydamon 0:4c17779d2cc6 71 / 437 - U.S.
lucydamon 0:4c17779d2cc6 72 / 720 - Arabic
lucydamon 0:4c17779d2cc6 73 / 737 - Greek
lucydamon 0:4c17779d2cc6 74 / 771 - KBL
lucydamon 0:4c17779d2cc6 75 / 775 - Baltic
lucydamon 0:4c17779d2cc6 76 / 850 - Latin 1
lucydamon 0:4c17779d2cc6 77 / 852 - Latin 2
lucydamon 0:4c17779d2cc6 78 / 855 - Cyrillic
lucydamon 0:4c17779d2cc6 79 / 857 - Turkish
lucydamon 0:4c17779d2cc6 80 / 860 - Portuguese
lucydamon 0:4c17779d2cc6 81 / 861 - Icelandic
lucydamon 0:4c17779d2cc6 82 / 862 - Hebrew
lucydamon 0:4c17779d2cc6 83 / 863 - Canadian French
lucydamon 0:4c17779d2cc6 84 / 864 - Arabic
lucydamon 0:4c17779d2cc6 85 / 865 - Nordic
lucydamon 0:4c17779d2cc6 86 / 866 - Russian
lucydamon 0:4c17779d2cc6 87 / 869 - Greek 2
lucydamon 0:4c17779d2cc6 88 / 932 - Japanese (DBCS)
lucydamon 0:4c17779d2cc6 89 / 936 - Simplified Chinese (DBCS)
lucydamon 0:4c17779d2cc6 90 / 949 - Korean (DBCS)
lucydamon 0:4c17779d2cc6 91 / 950 - Traditional Chinese (DBCS)
lucydamon 0:4c17779d2cc6 92 */
lucydamon 0:4c17779d2cc6 93
lucydamon 0:4c17779d2cc6 94
lucydamon 0:4c17779d2cc6 95 #define _USE_LFN 1
lucydamon 0:4c17779d2cc6 96 #define _MAX_LFN 255
lucydamon 0:4c17779d2cc6 97 /* The _USE_LFN option switches the LFN feature.
lucydamon 0:4c17779d2cc6 98 /
lucydamon 0:4c17779d2cc6 99 / 0: Disable LFN feature. _MAX_LFN has no effect.
lucydamon 0:4c17779d2cc6 100 / 1: Enable LFN with static working buffer on the BSS. Always NOT thread-safe.
lucydamon 0:4c17779d2cc6 101 / 2: Enable LFN with dynamic working buffer on the STACK.
lucydamon 0:4c17779d2cc6 102 / 3: Enable LFN with dynamic working buffer on the HEAP.
lucydamon 0:4c17779d2cc6 103 /
lucydamon 0:4c17779d2cc6 104 / When enable the LFN feature, Unicode handling functions (option/unicode.c) must
lucydamon 0:4c17779d2cc6 105 / be added to the project. The LFN working buffer occupies (_MAX_LFN + 1) * 2 bytes.
lucydamon 0:4c17779d2cc6 106 / When use stack for the working buffer, take care on stack overflow. When use heap
lucydamon 0:4c17779d2cc6 107 / memory for the working buffer, memory management functions, ff_memalloc() and
lucydamon 0:4c17779d2cc6 108 / ff_memfree(), must be added to the project. */
lucydamon 0:4c17779d2cc6 109
lucydamon 0:4c17779d2cc6 110
lucydamon 0:4c17779d2cc6 111 #define _LFN_UNICODE 0
lucydamon 0:4c17779d2cc6 112 /* This option switches character encoding on the API. (0:ANSI/OEM or 1:Unicode)
lucydamon 0:4c17779d2cc6 113 / To use Unicode string for the path name, enable LFN feature and set _LFN_UNICODE
lucydamon 0:4c17779d2cc6 114 / to 1. This option also affects behavior of string I/O functions. */
lucydamon 0:4c17779d2cc6 115
lucydamon 0:4c17779d2cc6 116
lucydamon 0:4c17779d2cc6 117 #define _STRF_ENCODE 3
lucydamon 0:4c17779d2cc6 118 /* When _LFN_UNICODE is 1, this option selects the character encoding on the file to
lucydamon 0:4c17779d2cc6 119 / be read/written via string I/O functions, f_gets(), f_putc(), f_puts and f_printf().
lucydamon 0:4c17779d2cc6 120 /
lucydamon 0:4c17779d2cc6 121 / 0: ANSI/OEM
lucydamon 0:4c17779d2cc6 122 / 1: UTF-16LE
lucydamon 0:4c17779d2cc6 123 / 2: UTF-16BE
lucydamon 0:4c17779d2cc6 124 / 3: UTF-8
lucydamon 0:4c17779d2cc6 125 /
lucydamon 0:4c17779d2cc6 126 / When _LFN_UNICODE is 0, this option has no effect. */
lucydamon 0:4c17779d2cc6 127
lucydamon 0:4c17779d2cc6 128
lucydamon 0:4c17779d2cc6 129 #define _FS_RPATH 0
lucydamon 0:4c17779d2cc6 130 /* This option configures relative path feature.
lucydamon 0:4c17779d2cc6 131 /
lucydamon 0:4c17779d2cc6 132 / 0: Disable relative path feature and remove related functions.
lucydamon 0:4c17779d2cc6 133 / 1: Enable relative path feature. f_chdir() and f_chdrive() are available.
lucydamon 0:4c17779d2cc6 134 / 2: f_getcwd() function is available in addition to 1.
lucydamon 0:4c17779d2cc6 135 /
lucydamon 0:4c17779d2cc6 136 / Note that directory items read via f_readdir() are affected by this option. */
lucydamon 0:4c17779d2cc6 137
lucydamon 0:4c17779d2cc6 138
lucydamon 0:4c17779d2cc6 139 /*---------------------------------------------------------------------------/
lucydamon 0:4c17779d2cc6 140 / Drive/Volume Configurations
lucydamon 0:4c17779d2cc6 141 /---------------------------------------------------------------------------*/
lucydamon 0:4c17779d2cc6 142
lucydamon 0:4c17779d2cc6 143 #define _VOLUMES 1
lucydamon 0:4c17779d2cc6 144 /* Number of volumes (logical drives) to be used. */
lucydamon 0:4c17779d2cc6 145
lucydamon 0:4c17779d2cc6 146
lucydamon 0:4c17779d2cc6 147 #define _STR_VOLUME_ID 0
lucydamon 0:4c17779d2cc6 148 #define _VOLUME_STRS "RAM","NAND","CF","SD1","SD2","USB1","USB2","USB3"
lucydamon 0:4c17779d2cc6 149 /* _STR_VOLUME_ID option switches string volume ID feature.
lucydamon 0:4c17779d2cc6 150 / When _STR_VOLUME_ID is set to 1, also pre-defined strings can be used as drive
lucydamon 0:4c17779d2cc6 151 / number in the path name. _VOLUME_STRS defines the drive ID strings for each
lucydamon 0:4c17779d2cc6 152 / logical drives. Number of items must be equal to _VOLUMES. Valid characters for
lucydamon 0:4c17779d2cc6 153 / the drive ID strings are: A-Z and 0-9. */
lucydamon 0:4c17779d2cc6 154
lucydamon 0:4c17779d2cc6 155
lucydamon 0:4c17779d2cc6 156 #define _MULTI_PARTITION 0
lucydamon 0:4c17779d2cc6 157 /* This option switches multi-partition feature. By default (0), each logical drive
lucydamon 0:4c17779d2cc6 158 / number is bound to the same physical drive number and only an FAT volume found on
lucydamon 0:4c17779d2cc6 159 / the physical drive will be mounted. When multi-partition feature is enabled (1),
lucydamon 0:4c17779d2cc6 160 / each logical drive number is bound to arbitrary physical drive and partition
lucydamon 0:4c17779d2cc6 161 / listed in the VolToPart[]. Also f_fdisk() funciton will be available. */
lucydamon 0:4c17779d2cc6 162
lucydamon 0:4c17779d2cc6 163
lucydamon 0:4c17779d2cc6 164 #define _MIN_SS 512
lucydamon 0:4c17779d2cc6 165 #define _MAX_SS 512
lucydamon 0:4c17779d2cc6 166 /* These options configure the range of sector size to be supported. (512, 1024,
lucydamon 0:4c17779d2cc6 167 / 2048 or 4096) Always set both 512 for most systems, all type of memory cards and
lucydamon 0:4c17779d2cc6 168 / harddisk. But a larger value may be required for on-board flash memory and some
lucydamon 0:4c17779d2cc6 169 / type of optical media. When _MAX_SS is larger than _MIN_SS, FatFs is configured
lucydamon 0:4c17779d2cc6 170 / to variable sector size and GET_SECTOR_SIZE command must be implemented to the
lucydamon 0:4c17779d2cc6 171 / disk_ioctl() function. */
lucydamon 0:4c17779d2cc6 172
lucydamon 0:4c17779d2cc6 173
lucydamon 0:4c17779d2cc6 174 #define _USE_TRIM 0
lucydamon 0:4c17779d2cc6 175 /* This option switches ATA-TRIM feature. (0:Disable or 1:Enable)
lucydamon 0:4c17779d2cc6 176 / To enable Trim feature, also CTRL_TRIM command should be implemented to the
lucydamon 0:4c17779d2cc6 177 / disk_ioctl() function. */
lucydamon 0:4c17779d2cc6 178
lucydamon 0:4c17779d2cc6 179
lucydamon 0:4c17779d2cc6 180 #define _FS_NOFSINFO 0
lucydamon 0:4c17779d2cc6 181 /* If you need to know correct free space on the FAT32 volume, set bit 0 of this
lucydamon 0:4c17779d2cc6 182 / option, and f_getfree() function at first time after volume mount will force
lucydamon 0:4c17779d2cc6 183 / a full FAT scan. Bit 1 controls the use of last allocated cluster number.
lucydamon 0:4c17779d2cc6 184 /
lucydamon 0:4c17779d2cc6 185 / bit0=0: Use free cluster count in the FSINFO if available.
lucydamon 0:4c17779d2cc6 186 / bit0=1: Do not trust free cluster count in the FSINFO.
lucydamon 0:4c17779d2cc6 187 / bit1=0: Use last allocated cluster number in the FSINFO if available.
lucydamon 0:4c17779d2cc6 188 / bit1=1: Do not trust last allocated cluster number in the FSINFO.
lucydamon 0:4c17779d2cc6 189 */
lucydamon 0:4c17779d2cc6 190
lucydamon 0:4c17779d2cc6 191
lucydamon 0:4c17779d2cc6 192
lucydamon 0:4c17779d2cc6 193 /*---------------------------------------------------------------------------/
lucydamon 0:4c17779d2cc6 194 / System Configurations
lucydamon 0:4c17779d2cc6 195 /---------------------------------------------------------------------------*/
lucydamon 0:4c17779d2cc6 196
lucydamon 0:4c17779d2cc6 197 #define _FS_TINY 0
lucydamon 0:4c17779d2cc6 198 /* This option switches tiny buffer configuration. (0:Normal or 1:Tiny)
lucydamon 0:4c17779d2cc6 199 / At the tiny configuration, size of the file object (FIL) is reduced _MAX_SS
lucydamon 0:4c17779d2cc6 200 / bytes. Instead of private sector buffer eliminated from the file object,
lucydamon 0:4c17779d2cc6 201 / common sector buffer in the file system object (FATFS) is used for the file
lucydamon 0:4c17779d2cc6 202 / data transfer. */
lucydamon 0:4c17779d2cc6 203
lucydamon 0:4c17779d2cc6 204
lucydamon 0:4c17779d2cc6 205 #define _FS_NORTC 0
lucydamon 0:4c17779d2cc6 206 #define _NORTC_MON 1
lucydamon 0:4c17779d2cc6 207 #define _NORTC_MDAY 1
lucydamon 0:4c17779d2cc6 208 #define _NORTC_YEAR 2015
lucydamon 0:4c17779d2cc6 209 /* The _FS_NORTC option switches timestamp feature. If the system does not have
lucydamon 0:4c17779d2cc6 210 / an RTC function or valid timestamp is not needed, set _FS_NORTC to 1 to disable
lucydamon 0:4c17779d2cc6 211 / the timestamp feature. All objects modified by FatFs will have a fixed timestamp
lucydamon 0:4c17779d2cc6 212 / defined by _NORTC_MON, _NORTC_MDAY and _NORTC_YEAR.
lucydamon 0:4c17779d2cc6 213 / When timestamp feature is enabled (_FS_NORTC == 0), get_fattime() function need
lucydamon 0:4c17779d2cc6 214 / to be added to the project to read current time form RTC. _NORTC_MON,
lucydamon 0:4c17779d2cc6 215 / _NORTC_MDAY and _NORTC_YEAR have no effect.
lucydamon 0:4c17779d2cc6 216 / These options have no effect at read-only configuration (_FS_READONLY == 1). */
lucydamon 0:4c17779d2cc6 217
lucydamon 0:4c17779d2cc6 218
lucydamon 0:4c17779d2cc6 219 #define _FS_LOCK 0
lucydamon 0:4c17779d2cc6 220 /* The _FS_LOCK option switches file lock feature to control duplicated file open
lucydamon 0:4c17779d2cc6 221 / and illegal operation to open objects. This option must be 0 when _FS_READONLY
lucydamon 0:4c17779d2cc6 222 / is 1.
lucydamon 0:4c17779d2cc6 223 /
lucydamon 0:4c17779d2cc6 224 / 0: Disable file lock feature. To avoid volume corruption, application program
lucydamon 0:4c17779d2cc6 225 / should avoid illegal open, remove and rename to the open objects.
lucydamon 0:4c17779d2cc6 226 / >0: Enable file lock feature. The value defines how many files/sub-directories
lucydamon 0:4c17779d2cc6 227 / can be opened simultaneously under file lock control. Note that the file
lucydamon 0:4c17779d2cc6 228 / lock feature is independent of re-entrancy. */
lucydamon 0:4c17779d2cc6 229
lucydamon 0:4c17779d2cc6 230
lucydamon 0:4c17779d2cc6 231 #define _FS_REENTRANT 0
lucydamon 0:4c17779d2cc6 232 #define _FS_TIMEOUT 1000
lucydamon 0:4c17779d2cc6 233 #define _SYNC_t HANDLE
lucydamon 0:4c17779d2cc6 234 /* The _FS_REENTRANT option switches the re-entrancy (thread safe) of the FatFs
lucydamon 0:4c17779d2cc6 235 / module itself. Note that regardless of this option, file access to different
lucydamon 0:4c17779d2cc6 236 / volume is always re-entrant and volume control functions, f_mount(), f_mkfs()
lucydamon 0:4c17779d2cc6 237 / and f_fdisk() function, are always not re-entrant. Only file/directory access
lucydamon 0:4c17779d2cc6 238 / to the same volume is under control of this feature.
lucydamon 0:4c17779d2cc6 239 /
lucydamon 0:4c17779d2cc6 240 / 0: Disable re-entrancy. _FS_TIMEOUT and _SYNC_t have no effect.
lucydamon 0:4c17779d2cc6 241 / 1: Enable re-entrancy. Also user provided synchronization handlers,
lucydamon 0:4c17779d2cc6 242 / ff_req_grant(), ff_rel_grant(), ff_del_syncobj() and ff_cre_syncobj()
lucydamon 0:4c17779d2cc6 243 / function, must be added to the project. Samples are available in
lucydamon 0:4c17779d2cc6 244 / option/syscall.c.
lucydamon 0:4c17779d2cc6 245 /
lucydamon 0:4c17779d2cc6 246 / The _FS_TIMEOUT defines timeout period in unit of time tick.
lucydamon 0:4c17779d2cc6 247 / The _SYNC_t defines O/S dependent sync object type. e.g. HANDLE, ID, OS_EVENT*,
lucydamon 0:4c17779d2cc6 248 / SemaphoreHandle_t and etc.. A header file for O/S definitions needs to be
lucydamon 0:4c17779d2cc6 249 / included somewhere in the scope of ff.c. */
lucydamon 0:4c17779d2cc6 250
lucydamon 0:4c17779d2cc6 251
lucydamon 0:4c17779d2cc6 252 #define _WORD_ACCESS 0
lucydamon 0:4c17779d2cc6 253 /* The _WORD_ACCESS option is an only platform dependent option. It defines
lucydamon 0:4c17779d2cc6 254 / which access method is used to the word data on the FAT volume.
lucydamon 0:4c17779d2cc6 255 /
lucydamon 0:4c17779d2cc6 256 / 0: Byte-by-byte access. Always compatible with all platforms.
lucydamon 0:4c17779d2cc6 257 / 1: Word access. Do not choose this unless under both the following conditions.
lucydamon 0:4c17779d2cc6 258 /
lucydamon 0:4c17779d2cc6 259 / * Address misaligned memory access is always allowed to ALL instructions.
lucydamon 0:4c17779d2cc6 260 / * Byte order on the memory is little-endian.
lucydamon 0:4c17779d2cc6 261 /
lucydamon 0:4c17779d2cc6 262 / If it is the case, _WORD_ACCESS can also be set to 1 to reduce code size.
lucydamon 0:4c17779d2cc6 263 / Following table shows allowable settings of some type of processors.
lucydamon 0:4c17779d2cc6 264 /
lucydamon 0:4c17779d2cc6 265 / ARM7TDMI 0 *2 ColdFire 0 *1 V850E 0 *2
lucydamon 0:4c17779d2cc6 266 / Cortex-M3 0 *3 Z80 0/1 V850ES 0/1
lucydamon 0:4c17779d2cc6 267 / Cortex-M0 0 *2 x86 0/1 TLCS-870 0/1
lucydamon 0:4c17779d2cc6 268 / AVR 0/1 RX600(LE) 0/1 TLCS-900 0/1
lucydamon 0:4c17779d2cc6 269 / AVR32 0 *1 RL78 0 *2 R32C 0 *2
lucydamon 0:4c17779d2cc6 270 / PIC18 0/1 SH-2 0 *1 M16C 0/1
lucydamon 0:4c17779d2cc6 271 / PIC24 0 *2 H8S 0 *1 MSP430 0 *2
lucydamon 0:4c17779d2cc6 272 / PIC32 0 *1 H8/300H 0 *1 8051 0/1
lucydamon 0:4c17779d2cc6 273 /
lucydamon 0:4c17779d2cc6 274 / *1:Big-endian.
lucydamon 0:4c17779d2cc6 275 / *2:Unaligned memory access is not supported.
lucydamon 0:4c17779d2cc6 276 / *3:Some compilers generate LDM/STM for mem_cpy function.
lucydamon 0:4c17779d2cc6 277 */
lucydamon 0:4c17779d2cc6 278
lucydamon 0:4c17779d2cc6 279 #define FLUSH_ON_NEW_CLUSTER 0 /* Sync the file on every new cluster */
lucydamon 0:4c17779d2cc6 280 #define FLUSH_ON_NEW_SECTOR 1 /* Sync the file on every new sector */
lucydamon 0:4c17779d2cc6 281 /* Only one of these two defines needs to be set to 1. If both are set to 0
lucydamon 0:4c17779d2cc6 282 the file is only sync when closed.
lucydamon 0:4c17779d2cc6 283 Clusters are group of sectors (eg: 8 sectors). Flushing on new cluster means
lucydamon 0:4c17779d2cc6 284 it would be less often than flushing on new sector. Sectors are generally
lucydamon 0:4c17779d2cc6 285 512 Bytes long. */