esp-idf/components/fatfs/Kconfig

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menu "FAT Filesystem support"
choice FATFS_CHOOSE_CODEPAGE
prompt "OEM Code Page"
default FATFS_CODEPAGE_ASCII
help
OEM code page used for file name encodings. Required to
be set to a non-ASCII value to use Long Filenames.
config FATFS_CODEPAGE_ASCII
bool "ASCII (CP1, no long filenames)"
config FATFS_CODEPAGE_437
bool "US (CP437)"
config FATFS_CODEPAGE_720
bool "Arabic (CP720)"
config FATFS_CODEPAGE_737
bool "Greek (CP737)"
config FATFS_CODEPAGE_771
bool "KBL (CP771)"
config FATFS_CODEPAGE_775
bool "Baltic (CP775)"
config FATFS_CODEPAGE_850
bool "Latin 1 (CP850)"
config FATFS_CODEPAGE_852
bool "Latin 2 (CP852)"
config FATFS_CODEPAGE_855
bool "Cyrillic (CP855)"
config FATFS_CODEPAGE_857
bool "Turkish (CP857)"
config FATFS_CODEPAGE_860
bool "Portugese (CP860)"
config FATFS_CODEPAGE_861
bool "Icelandic (CP861)"
config FATFS_CODEPAGE_862
bool "Hebrew (CP862)"
config FATFS_CODEPAGE_863
bool "Canadian French (CP863)"
config FATFS_CODEPAGE_864
bool "Arabic (CP864)"
config FATFS_CODEPAGE_865
bool "Nordic (CP865)"
config FATFS_CODEPAGE_866
bool "Russian (CP866)"
config FATFS_CODEPAGE_869
bool "Greek 2 (CP869)"
config FATFS_CODEPAGE_932
bool "Japanese (DBCS) (CP932)"
config FATFS_CODEPAGE_936
bool "Simplified Chinese (DBCS) (CP936)"
config FATFS_CODEPAGE_949
bool "Korean (DBCS) (CP949)"
config FATFS_CODEPAGE_950
bool "Traditional Chinese (DBCS) (CP950)"
endchoice
config FATFS_CODEPAGE
int
default 1 if FATFS_CODEPAGE_ASCII
default 437 if FATFS_CODEPAGE_437
default 720 if FATFS_CODEPAGE_720
default 737 if FATFS_CODEPAGE_737
default 771 if FATFS_CODEPAGE_771
default 775 if FATFS_CODEPAGE_775
default 850 if FATFS_CODEPAGE_850
default 852 if FATFS_CODEPAGE_852
default 855 if FATFS_CODEPAGE_855
default 857 if FATFS_CODEPAGE_857
default 860 if FATFS_CODEPAGE_860
default 861 if FATFS_CODEPAGE_861
default 862 if FATFS_CODEPAGE_862
default 863 if FATFS_CODEPAGE_863
default 864 if FATFS_CODEPAGE_864
default 865 if FATFS_CODEPAGE_865
default 866 if FATFS_CODEPAGE_866
default 869 if FATFS_CODEPAGE_869
default 932 if FATFS_CODEPAGE_932
default 936 if FATFS_CODEPAGE_936
default 949 if FATFS_CODEPAGE_949
default 950 if FATFS_CODEPAGE_950
default 1
choice FATFS_LONG_FILENAMES
prompt "Long filename support"
default FATFS_LFN_NONE
depends on !FATFS_CODEPAGE_ASCII
help
Support long filenames in FAT. Long filename data increases
memory usage. FATFS can be configured to store the buffer for
long filename data in stack or heap.
config FATFS_LFN_NONE
bool "No long filenames"
config FATFS_LFN_HEAP
bool "Long filename buffer in heap"
config FATFS_LFN_STACK
bool "Long filename buffer on stack"
endchoice
config FATFS_MAX_LFN
int "Max long filename length"
depends on !FATFS_LFN_NONE
default 255
range 12 255
help
Maximum long filename length. Can be reduced to save RAM.
config FATFS_FS_LOCK
int "Number of simultaneously open files protected by lock function"
default 0
range 0 65535
help
This option sets the FATFS configuration value _FS_LOCK.
The option _FS_LOCK switches file lock function to control duplicated file open
and illegal operation to open objects.
* 0: Disable file lock function. To avoid volume corruption, application
should avoid illegal open, remove and rename to the open objects.
* >0: Enable file lock function. The value defines how many files/sub-directories
can be opened simultaneously under file lock control.
Note that the file lock control is independent of re-entrancy.
config FATFS_TIMEOUT_MS
int "Timeout for acquiring a file lock, ms"
default 10000
help
This option sets FATFS configuration value _FS_TIMEOUT, scaled to milliseconds.
Sets the number of milliseconds FATFS will wait to acquire a mutex when
operating on an open file. For example, if one task is performing a lenghty
operation, another task will wait for the first task to release the lock,
and time out after amount of time set by this option.
config FATFS_PER_FILE_CACHE
bool "Use separate cache for each file"
default y
help
This option affects FATFS configuration value _FS_TINY.
If this option is set, _FS_TINY is 0, and each open file has its own cache,
size of the cache is equal to the _MAX_SS variable (512 or 4096 bytes).
This option uses more RAM if more than 1 file is open, but needs less reads
and writes to the storage for some operations.
If this option is not set, _FS_TINY is 1, and single cache is used for
all open files, size is also equal to _MAX_SS variable. This reduces the
amount of heap used when multiple files are open, but increases the number
of read and write operations which FATFS needs to make.
endmenu