mi mi / SDFileSystemDMA Featured

first 2016/02 SDFileSystemDMA inherited from Official SDFileSystem.

Dependents:   SDFileSystemDMA-test DmdFullRGB_0_1

Fork of SDFileSystemDMA by mi mi

SDFileSystemDMA is enhanced SDFileSystem library for STM32 micros by using DMA functionality.
Max read transfer rate reaches over 2MByte/sec at 24MHz SPI clock if enough read buffer size is set.
Even though minimum read buffer size (512Byte) is set, read transfer rate will reach over 1MByte/sec at 24MHz SPI Clock.
( but depends on the ability of each SD card)

Test program is here.
https://developer.mbed.org/users/mimi3/code/SDFileSystemDMA-test/

/media/uploads/mimi3/sdfilesystemdma-speed-test3-read-buffer-512byte.png

/media/uploads/mimi3/sdfilesystemdma-speed-test-buffer-vs-spi-clock-nucleo-f411re-96mhz.png

Supported SPI port is shown below table.

(v): Verified. It works well.
(w): Probably it will work well. (not tested)
(c): Only compiled. (not tested)
(f): Over flash.
(r): Only read mode. (when _FS_READONLY==1)
(u) Under construction
(z): Dose not work.

Caution

If your board has SRAM less than or equal to 8KB, the buffer size must be set to 512 Bytes.

Supported Boards:
Cortex-M0

BoardSRAMSPI1SPI2SPI3
NUCLEO-F030R88KB(v)
DISCO-F051R88KB(w)
NUCLEO-F031K64KB(f)
NUCLEO-F042K66KB(r)
NUCLEO-F070RB16KB(w)
NUCLEO-F072RB16KB(w)
NUCLEO-F091RC32KB(c)

Cortex-L0

BoardSRAMSPI1SPI2SPI3
DISCO-L053C88KB(c)
NUCLEO-L053R88KB(c)
NUCLEO-L073RZ20KB(c)

Cortex-M3

BoardSRAMSPI1SPI2SPI3
DISCO-F100RB8KB(v)(v)-
BLUEPILL-F103CB20KB(w)(w)-
NUCLEO-F103RB20KB(v)(v)-
NUCLEO-L152RE80KB(v)(w)-
MOTE-L152RC32KB(w)(w)-

Cortex-M4
F3

BoardSRAMSPI1SPI2SPI3
DISCO-F303VC40KB-(v)(v)
NUCLEO-F303RE64KB(w)(w)(w)
NUCLEO-F302R816KB--(c)
NUCLEO-F303K812KB(c)--
DISCO-F334C812KB(c)--
NUCLEO-F334R812KB(c)--

F4

BoardSPI1SPI2SPI3
ELMO-F411RE(w)-(w)
MTS-MDOT-F411RE(u)-(u)
MTS-DRAGONFLY-F411RE(w)-(w)
NUCLEO-F411RE(v)-(v)
NUCLEO-F401RE(w)-(w)
MTS-MDOT-F405RG(u)-(u)
NUCLEO-F410RB(c)-(c)
NUCLEO-F446RE(c)-(c)
NUCLEO-F429ZI(c)-(c)
B96B-F446VE(c)-(c)
NUCLEO-F446ZE(c)-(c)
DISCO-F429ZI(u)-(u)
DISCO-F469NI(c)-(c)

Information

This library is set to use "short file name" in SDFileSystemDMA/FATFileSystem/ChaN/ffconf.h . ( _USE_LFN=0)
You can change this option to _USE_LFN=1 .

FATFileSystem/ChaN/ffconf.h@38:7077795dbf81, 2017-01-22 (annotated)

Committer:
mimi3
Date:
Sun Jan 22 23:13:11 2017 +0900
Revision:
38:7077795dbf81
Parent:
10:b48d3ace55db 
change: table.md

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mimi3 10:b48d3ace55db 1 /*---------------------------------------------------------------------------/
mimi3 10:b48d3ace55db 2 / FatFs - FAT file system module configuration file R0.11a (C)ChaN, 2015
mimi3 10:b48d3ace55db 3 /---------------------------------------------------------------------------*/
mimi3 10:b48d3ace55db 4
mimi3 10:b48d3ace55db 5 #define _FFCONF 64180 /* Revision ID */
mimi3 10:b48d3ace55db 6
mimi3 10:b48d3ace55db 7 #define FFS_DBG 0
mimi3 10:b48d3ace55db 8
mimi3 10:b48d3ace55db 9 /*---------------------------------------------------------------------------/
mimi3 10:b48d3ace55db 10 / Function Configurations
mimi3 10:b48d3ace55db 11 /---------------------------------------------------------------------------*/
mimi3 10:b48d3ace55db 12
mimi3 10:b48d3ace55db 13 #define _FS_READONLY 0
mimi3 10:b48d3ace55db 14 /* This option switches read-only configuration. (0:Read/Write or 1:Read-only)
mimi3 10:b48d3ace55db 15 / Read-only configuration removes writing API functions, f_write(), f_sync(),
mimi3 10:b48d3ace55db 16 / f_unlink(), f_mkdir(), f_chmod(), f_rename(), f_truncate(), f_getfree()
mimi3 10:b48d3ace55db 17 / and optional writing functions as well. */
mimi3 10:b48d3ace55db 18
mimi3 10:b48d3ace55db 19
mimi3 10:b48d3ace55db 20 #define _FS_MINIMIZE 0
mimi3 10:b48d3ace55db 21 /* This option defines minimization level to remove some basic API functions.
mimi3 10:b48d3ace55db 22 /
mimi3 10:b48d3ace55db 23 / 0: All basic functions are enabled.
mimi3 10:b48d3ace55db 24 / 1: f_stat(), f_getfree(), f_unlink(), f_mkdir(), f_chmod(), f_utime(),
mimi3 10:b48d3ace55db 25 / f_truncate() and f_rename() function are removed.
mimi3 10:b48d3ace55db 26 / 2: f_opendir(), f_readdir() and f_closedir() are removed in addition to 1.
mimi3 10:b48d3ace55db 27 / 3: f_lseek() function is removed in addition to 2. */
mimi3 10:b48d3ace55db 28
mimi3 10:b48d3ace55db 29
mimi3 10:b48d3ace55db 30 #define _USE_STRFUNC 0
mimi3 10:b48d3ace55db 31 /* This option switches string functions, f_gets(), f_putc(), f_puts() and
mimi3 10:b48d3ace55db 32 / f_printf().
mimi3 10:b48d3ace55db 33 /
mimi3 10:b48d3ace55db 34 / 0: Disable string functions.
mimi3 10:b48d3ace55db 35 / 1: Enable without LF-CRLF conversion.
mimi3 10:b48d3ace55db 36 / 2: Enable with LF-CRLF conversion. */
mimi3 10:b48d3ace55db 37
mimi3 10:b48d3ace55db 38
mimi3 10:b48d3ace55db 39 #define _USE_FIND 0
mimi3 10:b48d3ace55db 40 /* This option switches filtered directory read feature and related functions,
mimi3 10:b48d3ace55db 41 / f_findfirst() and f_findnext(). (0:Disable or 1:Enable) */
mimi3 10:b48d3ace55db 42
mimi3 10:b48d3ace55db 43
mimi3 10:b48d3ace55db 44 #define _USE_MKFS 1
mimi3 10:b48d3ace55db 45 /* This option switches f_mkfs() function. (0:Disable or 1:Enable) */
mimi3 10:b48d3ace55db 46
mimi3 10:b48d3ace55db 47
mimi3 10:b48d3ace55db 48 #define _USE_FASTSEEK 0
mimi3 10:b48d3ace55db 49 /* This option switches fast seek feature. (0:Disable or 1:Enable) */
mimi3 10:b48d3ace55db 50
mimi3 10:b48d3ace55db 51
mimi3 10:b48d3ace55db 52 #define _USE_LABEL 0
mimi3 10:b48d3ace55db 53 /* This option switches volume label functions, f_getlabel() and f_setlabel().
mimi3 10:b48d3ace55db 54 / (0:Disable or 1:Enable) */
mimi3 10:b48d3ace55db 55
mimi3 10:b48d3ace55db 56
mimi3 10:b48d3ace55db 57 #define _USE_FORWARD 0
mimi3 10:b48d3ace55db 58 /* This option switches f_forward() function. (0:Disable or 1:Enable)
mimi3 10:b48d3ace55db 59 / To enable it, also _FS_TINY need to be set to 1. */
mimi3 10:b48d3ace55db 60
mimi3 10:b48d3ace55db 61
mimi3 10:b48d3ace55db 62 /*---------------------------------------------------------------------------/
mimi3 10:b48d3ace55db 63 / Locale and Namespace Configurations
mimi3 10:b48d3ace55db 64 /---------------------------------------------------------------------------*/
mimi3 10:b48d3ace55db 65
mimi3 10:b48d3ace55db 66 #define _CODE_PAGE 850
mimi3 10:b48d3ace55db 67 /* This option specifies the OEM code page to be used on the target system.
mimi3 10:b48d3ace55db 68 / Incorrect setting of the code page can cause a file open failure.
mimi3 10:b48d3ace55db 69 /
mimi3 10:b48d3ace55db 70 / 1 - ASCII (No extended character. Non-LFN cfg. only)
mimi3 10:b48d3ace55db 71 / 437 - U.S.
mimi3 10:b48d3ace55db 72 / 720 - Arabic
mimi3 10:b48d3ace55db 73 / 737 - Greek
mimi3 10:b48d3ace55db 74 / 771 - KBL
mimi3 10:b48d3ace55db 75 / 775 - Baltic
mimi3 10:b48d3ace55db 76 / 850 - Latin 1
mimi3 10:b48d3ace55db 77 / 852 - Latin 2
mimi3 10:b48d3ace55db 78 / 855 - Cyrillic
mimi3 10:b48d3ace55db 79 / 857 - Turkish
mimi3 10:b48d3ace55db 80 / 860 - Portuguese
mimi3 10:b48d3ace55db 81 / 861 - Icelandic
mimi3 10:b48d3ace55db 82 / 862 - Hebrew
mimi3 10:b48d3ace55db 83 / 863 - Canadian French
mimi3 10:b48d3ace55db 84 / 864 - Arabic
mimi3 10:b48d3ace55db 85 / 865 - Nordic
mimi3 10:b48d3ace55db 86 / 866 - Russian
mimi3 10:b48d3ace55db 87 / 869 - Greek 2
mimi3 10:b48d3ace55db 88 / 932 - Japanese (DBCS)
mimi3 10:b48d3ace55db 89 / 936 - Simplified Chinese (DBCS)
mimi3 10:b48d3ace55db 90 / 949 - Korean (DBCS)
mimi3 10:b48d3ace55db 91 / 950 - Traditional Chinese (DBCS)
mimi3 10:b48d3ace55db 92 */
mimi3 10:b48d3ace55db 93
mimi3 10:b48d3ace55db 94
mimi3 10:b48d3ace55db 95 #define _USE_LFN 0
mimi3 10:b48d3ace55db 96 #define _MAX_LFN 255
mimi3 10:b48d3ace55db 97 /* The _USE_LFN option switches the LFN feature.
mimi3 10:b48d3ace55db 98 /
mimi3 10:b48d3ace55db 99 / 0: Disable LFN feature. _MAX_LFN has no effect.
mimi3 10:b48d3ace55db 100 / 1: Enable LFN with static working buffer on the BSS. Always NOT thread-safe.
mimi3 10:b48d3ace55db 101 / 2: Enable LFN with dynamic working buffer on the STACK.
mimi3 10:b48d3ace55db 102 / 3: Enable LFN with dynamic working buffer on the HEAP.
mimi3 10:b48d3ace55db 103 /
mimi3 10:b48d3ace55db 104 / When enable the LFN feature, Unicode handling functions (option/unicode.c) must
mimi3 10:b48d3ace55db 105 / be added to the project. The LFN working buffer occupies (_MAX_LFN + 1) * 2 bytes.
mimi3 10:b48d3ace55db 106 / When use stack for the working buffer, take care on stack overflow. When use heap
mimi3 10:b48d3ace55db 107 / memory for the working buffer, memory management functions, ff_memalloc() and
mimi3 10:b48d3ace55db 108 / ff_memfree(), must be added to the project. */
mimi3 10:b48d3ace55db 109
mimi3 10:b48d3ace55db 110
mimi3 10:b48d3ace55db 111 #define _LFN_UNICODE 0
mimi3 10:b48d3ace55db 112 /* This option switches character encoding on the API. (0:ANSI/OEM or 1:Unicode)
mimi3 10:b48d3ace55db 113 / To use Unicode string for the path name, enable LFN feature and set _LFN_UNICODE
mimi3 10:b48d3ace55db 114 / to 1. This option also affects behavior of string I/O functions. */
mimi3 10:b48d3ace55db 115
mimi3 10:b48d3ace55db 116
mimi3 10:b48d3ace55db 117 #define _STRF_ENCODE 3
mimi3 10:b48d3ace55db 118 /* When _LFN_UNICODE is 1, this option selects the character encoding on the file to
mimi3 10:b48d3ace55db 119 / be read/written via string I/O functions, f_gets(), f_putc(), f_puts and f_printf().
mimi3 10:b48d3ace55db 120 /
mimi3 10:b48d3ace55db 121 / 0: ANSI/OEM
mimi3 10:b48d3ace55db 122 / 1: UTF-16LE
mimi3 10:b48d3ace55db 123 / 2: UTF-16BE
mimi3 10:b48d3ace55db 124 / 3: UTF-8
mimi3 10:b48d3ace55db 125 /
mimi3 10:b48d3ace55db 126 / When _LFN_UNICODE is 0, this option has no effect. */
mimi3 10:b48d3ace55db 127
mimi3 10:b48d3ace55db 128
mimi3 10:b48d3ace55db 129 #define _FS_RPATH 0
mimi3 10:b48d3ace55db 130 /* This option configures relative path feature.
mimi3 10:b48d3ace55db 131 /
mimi3 10:b48d3ace55db 132 / 0: Disable relative path feature and remove related functions.
mimi3 10:b48d3ace55db 133 / 1: Enable relative path feature. f_chdir() and f_chdrive() are available.
mimi3 10:b48d3ace55db 134 / 2: f_getcwd() function is available in addition to 1.
mimi3 10:b48d3ace55db 135 /
mimi3 10:b48d3ace55db 136 / Note that directory items read via f_readdir() are affected by this option. */
mimi3 10:b48d3ace55db 137
mimi3 10:b48d3ace55db 138
mimi3 10:b48d3ace55db 139 /*---------------------------------------------------------------------------/
mimi3 10:b48d3ace55db 140 / Drive/Volume Configurations
mimi3 10:b48d3ace55db 141 /---------------------------------------------------------------------------*/
mimi3 10:b48d3ace55db 142
mimi3 10:b48d3ace55db 143 #define _VOLUMES 1
mimi3 10:b48d3ace55db 144 /* Number of volumes (logical drives) to be used. */
mimi3 10:b48d3ace55db 145
mimi3 10:b48d3ace55db 146
mimi3 10:b48d3ace55db 147 #define _STR_VOLUME_ID 0
mimi3 10:b48d3ace55db 148 #define _VOLUME_STRS "RAM","NAND","CF","SD1","SD2","USB1","USB2","USB3"
mimi3 10:b48d3ace55db 149 /* _STR_VOLUME_ID option switches string volume ID feature.
mimi3 10:b48d3ace55db 150 / When _STR_VOLUME_ID is set to 1, also pre-defined strings can be used as drive
mimi3 10:b48d3ace55db 151 / number in the path name. _VOLUME_STRS defines the drive ID strings for each
mimi3 10:b48d3ace55db 152 / logical drives. Number of items must be equal to _VOLUMES. Valid characters for
mimi3 10:b48d3ace55db 153 / the drive ID strings are: A-Z and 0-9. */
mimi3 10:b48d3ace55db 154
mimi3 10:b48d3ace55db 155
mimi3 10:b48d3ace55db 156 #define _MULTI_PARTITION 0
mimi3 10:b48d3ace55db 157 /* This option switches multi-partition feature. By default (0), each logical drive
mimi3 10:b48d3ace55db 158 / number is bound to the same physical drive number and only an FAT volume found on
mimi3 10:b48d3ace55db 159 / the physical drive will be mounted. When multi-partition feature is enabled (1),
mimi3 10:b48d3ace55db 160 / each logical drive number is bound to arbitrary physical drive and partition
mimi3 10:b48d3ace55db 161 / listed in the VolToPart[]. Also f_fdisk() funciton will be available. */
mimi3 10:b48d3ace55db 162
mimi3 10:b48d3ace55db 163
mimi3 10:b48d3ace55db 164 #define _MIN_SS 512
mimi3 10:b48d3ace55db 165 #define _MAX_SS 512
mimi3 10:b48d3ace55db 166 /* These options configure the range of sector size to be supported. (512, 1024,
mimi3 10:b48d3ace55db 167 / 2048 or 4096) Always set both 512 for most systems, all type of memory cards and
mimi3 10:b48d3ace55db 168 / harddisk. But a larger value may be required for on-board flash memory and some
mimi3 10:b48d3ace55db 169 / type of optical media. When _MAX_SS is larger than _MIN_SS, FatFs is configured
mimi3 10:b48d3ace55db 170 / to variable sector size and GET_SECTOR_SIZE command must be implemented to the
mimi3 10:b48d3ace55db 171 / disk_ioctl() function. */
mimi3 10:b48d3ace55db 172
mimi3 10:b48d3ace55db 173
mimi3 10:b48d3ace55db 174 #define _USE_TRIM 0
mimi3 10:b48d3ace55db 175 /* This option switches ATA-TRIM feature. (0:Disable or 1:Enable)
mimi3 10:b48d3ace55db 176 / To enable Trim feature, also CTRL_TRIM command should be implemented to the
mimi3 10:b48d3ace55db 177 / disk_ioctl() function. */
mimi3 10:b48d3ace55db 178
mimi3 10:b48d3ace55db 179
mimi3 10:b48d3ace55db 180 #define _FS_NOFSINFO 0
mimi3 10:b48d3ace55db 181 /* If you need to know correct free space on the FAT32 volume, set bit 0 of this
mimi3 10:b48d3ace55db 182 / option, and f_getfree() function at first time after volume mount will force
mimi3 10:b48d3ace55db 183 / a full FAT scan. Bit 1 controls the use of last allocated cluster number.
mimi3 10:b48d3ace55db 184 /
mimi3 10:b48d3ace55db 185 / bit0=0: Use free cluster count in the FSINFO if available.
mimi3 10:b48d3ace55db 186 / bit0=1: Do not trust free cluster count in the FSINFO.
mimi3 10:b48d3ace55db 187 / bit1=0: Use last allocated cluster number in the FSINFO if available.
mimi3 10:b48d3ace55db 188 / bit1=1: Do not trust last allocated cluster number in the FSINFO.
mimi3 10:b48d3ace55db 189 */
mimi3 10:b48d3ace55db 190
mimi3 10:b48d3ace55db 191
mimi3 10:b48d3ace55db 192
mimi3 10:b48d3ace55db 193 /*---------------------------------------------------------------------------/
mimi3 10:b48d3ace55db 194 / System Configurations
mimi3 10:b48d3ace55db 195 /---------------------------------------------------------------------------*/
mimi3 10:b48d3ace55db 196
mimi3 10:b48d3ace55db 197 #define _FS_TINY 0
mimi3 10:b48d3ace55db 198 /* This option switches tiny buffer configuration. (0:Normal or 1:Tiny)
mimi3 10:b48d3ace55db 199 / At the tiny configuration, size of the file object (FIL) is reduced _MAX_SS
mimi3 10:b48d3ace55db 200 / bytes. Instead of private sector buffer eliminated from the file object,
mimi3 10:b48d3ace55db 201 / common sector buffer in the file system object (FATFS) is used for the file
mimi3 10:b48d3ace55db 202 / data transfer. */
mimi3 10:b48d3ace55db 203
mimi3 10:b48d3ace55db 204
mimi3 10:b48d3ace55db 205 #define _FS_NORTC 0
mimi3 10:b48d3ace55db 206 #define _NORTC_MON 1
mimi3 10:b48d3ace55db 207 #define _NORTC_MDAY 1
mimi3 10:b48d3ace55db 208 #define _NORTC_YEAR 2015
mimi3 10:b48d3ace55db 209 /* The _FS_NORTC option switches timestamp feature. If the system does not have
mimi3 10:b48d3ace55db 210 / an RTC function or valid timestamp is not needed, set _FS_NORTC to 1 to disable
mimi3 10:b48d3ace55db 211 / the timestamp feature. All objects modified by FatFs will have a fixed timestamp
mimi3 10:b48d3ace55db 212 / defined by _NORTC_MON, _NORTC_MDAY and _NORTC_YEAR.
mimi3 10:b48d3ace55db 213 / When timestamp feature is enabled (_FS_NORTC == 0), get_fattime() function need
mimi3 10:b48d3ace55db 214 / to be added to the project to read current time form RTC. _NORTC_MON,
mimi3 10:b48d3ace55db 215 / _NORTC_MDAY and _NORTC_YEAR have no effect.
mimi3 10:b48d3ace55db 216 / These options have no effect at read-only configuration (_FS_READONLY == 1). */
mimi3 10:b48d3ace55db 217
mimi3 10:b48d3ace55db 218
mimi3 10:b48d3ace55db 219 #define _FS_LOCK 0
mimi3 10:b48d3ace55db 220 /* The _FS_LOCK option switches file lock feature to control duplicated file open
mimi3 10:b48d3ace55db 221 / and illegal operation to open objects. This option must be 0 when _FS_READONLY
mimi3 10:b48d3ace55db 222 / is 1.
mimi3 10:b48d3ace55db 223 /
mimi3 10:b48d3ace55db 224 / 0: Disable file lock feature. To avoid volume corruption, application program
mimi3 10:b48d3ace55db 225 / should avoid illegal open, remove and rename to the open objects.
mimi3 10:b48d3ace55db 226 / >0: Enable file lock feature. The value defines how many files/sub-directories
mimi3 10:b48d3ace55db 227 / can be opened simultaneously under file lock control. Note that the file
mimi3 10:b48d3ace55db 228 / lock feature is independent of re-entrancy. */
mimi3 10:b48d3ace55db 229
mimi3 10:b48d3ace55db 230
mimi3 10:b48d3ace55db 231 #define _FS_REENTRANT 0
mimi3 10:b48d3ace55db 232 #define _FS_TIMEOUT 1000
mimi3 10:b48d3ace55db 233 #define _SYNC_t HANDLE
mimi3 10:b48d3ace55db 234 /* The _FS_REENTRANT option switches the re-entrancy (thread safe) of the FatFs
mimi3 10:b48d3ace55db 235 / module itself. Note that regardless of this option, file access to different
mimi3 10:b48d3ace55db 236 / volume is always re-entrant and volume control functions, f_mount(), f_mkfs()
mimi3 10:b48d3ace55db 237 / and f_fdisk() function, are always not re-entrant. Only file/directory access
mimi3 10:b48d3ace55db 238 / to the same volume is under control of this feature.
mimi3 10:b48d3ace55db 239 /
mimi3 10:b48d3ace55db 240 / 0: Disable re-entrancy. _FS_TIMEOUT and _SYNC_t have no effect.
mimi3 10:b48d3ace55db 241 / 1: Enable re-entrancy. Also user provided synchronization handlers,
mimi3 10:b48d3ace55db 242 / ff_req_grant(), ff_rel_grant(), ff_del_syncobj() and ff_cre_syncobj()
mimi3 10:b48d3ace55db 243 / function, must be added to the project. Samples are available in
mimi3 10:b48d3ace55db 244 / option/syscall.c.
mimi3 10:b48d3ace55db 245 /
mimi3 10:b48d3ace55db 246 / The _FS_TIMEOUT defines timeout period in unit of time tick.
mimi3 10:b48d3ace55db 247 / The _SYNC_t defines O/S dependent sync object type. e.g. HANDLE, ID, OS_EVENT*,
mimi3 10:b48d3ace55db 248 / SemaphoreHandle_t and etc.. A header file for O/S definitions needs to be
mimi3 10:b48d3ace55db 249 / included somewhere in the scope of ff.c. */
mimi3 10:b48d3ace55db 250
mimi3 10:b48d3ace55db 251
mimi3 10:b48d3ace55db 252 #define _WORD_ACCESS 0
mimi3 10:b48d3ace55db 253 /* The _WORD_ACCESS option is an only platform dependent option. It defines
mimi3 10:b48d3ace55db 254 / which access method is used to the word data on the FAT volume.
mimi3 10:b48d3ace55db 255 /
mimi3 10:b48d3ace55db 256 / 0: Byte-by-byte access. Always compatible with all platforms.
mimi3 10:b48d3ace55db 257 / 1: Word access. Do not choose this unless under both the following conditions.
mimi3 10:b48d3ace55db 258 /
mimi3 10:b48d3ace55db 259 / * Address misaligned memory access is always allowed to ALL instructions.
mimi3 10:b48d3ace55db 260 / * Byte order on the memory is little-endian.
mimi3 10:b48d3ace55db 261 /
mimi3 10:b48d3ace55db 262 / If it is the case, _WORD_ACCESS can also be set to 1 to reduce code size.
mimi3 10:b48d3ace55db 263 / Following table shows allowable settings of some type of processors.
mimi3 10:b48d3ace55db 264 /
mimi3 10:b48d3ace55db 265 / ARM7TDMI 0 *2 ColdFire 0 *1 V850E 0 *2
mimi3 10:b48d3ace55db 266 / Cortex-M3 0 *3 Z80 0/1 V850ES 0/1
mimi3 10:b48d3ace55db 267 / Cortex-M0 0 *2 x86 0/1 TLCS-870 0/1
mimi3 10:b48d3ace55db 268 / AVR 0/1 RX600(LE) 0/1 TLCS-900 0/1
mimi3 10:b48d3ace55db 269 / AVR32 0 *1 RL78 0 *2 R32C 0 *2
mimi3 10:b48d3ace55db 270 / PIC18 0/1 SH-2 0 *1 M16C 0/1
mimi3 10:b48d3ace55db 271 / PIC24 0 *2 H8S 0 *1 MSP430 0 *2
mimi3 10:b48d3ace55db 272 / PIC32 0 *1 H8/300H 0 *1 8051 0/1
mimi3 10:b48d3ace55db 273 /
mimi3 10:b48d3ace55db 274 / *1:Big-endian.
mimi3 10:b48d3ace55db 275 / *2:Unaligned memory access is not supported.
mimi3 10:b48d3ace55db 276 / *3:Some compilers generate LDM/STM for mem_cpy function.
mimi3 10:b48d3ace55db 277 */
mimi3 10:b48d3ace55db 278
mimi3 10:b48d3ace55db 279 #define FLUSH_ON_NEW_CLUSTER 0 /* Sync the file on every new cluster */
mimi3 10:b48d3ace55db 280 #define FLUSH_ON_NEW_SECTOR 1 /* Sync the file on every new sector */
mimi3 10:b48d3ace55db 281 /* Only one of these two defines needs to be set to 1. If both are set to 0
mimi3 10:b48d3ace55db 282 the file is only sync when closed.
mimi3 10:b48d3ace55db 283 Clusters are group of sectors (eg: 8 sectors). Flushing on new cluster means
mimi3 10:b48d3ace55db 284 it would be less often than flushing on new sector. Sectors are generally
mimi3 10:b48d3ace55db 285 512 Bytes long. */