2017-02-06 04:32:52 +00:00
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menu "FAT Filesystem support"
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2019-01-25 16:10:53 +00:00
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choice FATFS_CHOOSE_CODEPAGE
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prompt "OEM Code Page"
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default FATFS_CODEPAGE_437
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help
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OEM code page used for file name encodings.
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If "Dynamic" is selected, code page can be chosen at runtime using
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f_setcp function. Note that choosing this option will increase
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application size by ~480kB.
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config FATFS_CODEPAGE_DYNAMIC
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bool "Dynamic (all code pages supported)"
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config FATFS_CODEPAGE_437
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bool "US (CP437)"
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config FATFS_CODEPAGE_720
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bool "Arabic (CP720)"
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config FATFS_CODEPAGE_737
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bool "Greek (CP737)"
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config FATFS_CODEPAGE_771
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bool "KBL (CP771)"
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config FATFS_CODEPAGE_775
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bool "Baltic (CP775)"
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config FATFS_CODEPAGE_850
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bool "Latin 1 (CP850)"
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config FATFS_CODEPAGE_852
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bool "Latin 2 (CP852)"
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config FATFS_CODEPAGE_855
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bool "Cyrillic (CP855)"
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config FATFS_CODEPAGE_857
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bool "Turkish (CP857)"
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config FATFS_CODEPAGE_860
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bool "Portugese (CP860)"
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config FATFS_CODEPAGE_861
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bool "Icelandic (CP861)"
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config FATFS_CODEPAGE_862
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bool "Hebrew (CP862)"
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config FATFS_CODEPAGE_863
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bool "Canadian French (CP863)"
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config FATFS_CODEPAGE_864
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bool "Arabic (CP864)"
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config FATFS_CODEPAGE_865
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bool "Nordic (CP865)"
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config FATFS_CODEPAGE_866
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bool "Russian (CP866)"
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config FATFS_CODEPAGE_869
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bool "Greek 2 (CP869)"
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config FATFS_CODEPAGE_932
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bool "Japanese (DBCS) (CP932)"
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config FATFS_CODEPAGE_936
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bool "Simplified Chinese (DBCS) (CP936)"
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config FATFS_CODEPAGE_949
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bool "Korean (DBCS) (CP949)"
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config FATFS_CODEPAGE_950
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bool "Traditional Chinese (DBCS) (CP950)"
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endchoice
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config FATFS_CODEPAGE
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int
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default 0 if FATFS_CODEPAGE_DYNAMIC
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default 437 if FATFS_CODEPAGE_437
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default 720 if FATFS_CODEPAGE_720
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default 737 if FATFS_CODEPAGE_737
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default 771 if FATFS_CODEPAGE_771
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default 775 if FATFS_CODEPAGE_775
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default 850 if FATFS_CODEPAGE_850
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default 852 if FATFS_CODEPAGE_852
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default 855 if FATFS_CODEPAGE_855
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default 857 if FATFS_CODEPAGE_857
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default 860 if FATFS_CODEPAGE_860
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default 861 if FATFS_CODEPAGE_861
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default 862 if FATFS_CODEPAGE_862
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default 863 if FATFS_CODEPAGE_863
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default 864 if FATFS_CODEPAGE_864
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default 865 if FATFS_CODEPAGE_865
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default 866 if FATFS_CODEPAGE_866
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default 869 if FATFS_CODEPAGE_869
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default 932 if FATFS_CODEPAGE_932
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default 936 if FATFS_CODEPAGE_936
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default 949 if FATFS_CODEPAGE_949
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default 950 if FATFS_CODEPAGE_950
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default 437
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choice FATFS_LONG_FILENAMES
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prompt "Long filename support"
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default FATFS_LFN_NONE
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help
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Support long filenames in FAT. Long filename data increases
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memory usage. FATFS can be configured to store the buffer for
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long filename data in stack or heap.
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config FATFS_LFN_NONE
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bool "No long filenames"
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config FATFS_LFN_HEAP
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bool "Long filename buffer in heap"
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config FATFS_LFN_STACK
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bool "Long filename buffer on stack"
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endchoice
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config FATFS_MAX_LFN
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int "Max long filename length"
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depends on !FATFS_LFN_NONE
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default 255
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range 12 255
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help
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Maximum long filename length. Can be reduced to save RAM.
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choice FATFS_API_ENCODING
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prompt "API character encoding"
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depends on !FATFS_LFN_NONE
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default FATFS_API_ENCODING_ANSI_OEM
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help
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Choose encoding for character and string arguments/returns when using
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FATFS APIs. The encoding of arguments will usually depend on text
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editor settings.
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config FATFS_API_ENCODING_ANSI_OEM
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bool "API uses ANSI/OEM encoding"
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config FATFS_API_ENCODING_UTF_16
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bool "API uses UTF-16 encoding"
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config FATFS_API_ENCODING_UTF_8
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bool "API uses UTF-8 encoding"
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endchoice
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config FATFS_FS_LOCK
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int "Number of simultaneously open files protected by lock function"
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default 0
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range 0 65535
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help
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This option sets the FATFS configuration value _FS_LOCK.
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The option _FS_LOCK switches file lock function to control duplicated file open
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and illegal operation to open objects.
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* 0: Disable file lock function. To avoid volume corruption, application
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should avoid illegal open, remove and rename to the open objects.
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* >0: Enable file lock function. The value defines how many files/sub-directories
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can be opened simultaneously under file lock control.
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Note that the file lock control is independent of re-entrancy.
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config FATFS_TIMEOUT_MS
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int "Timeout for acquiring a file lock, ms"
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default 10000
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help
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This option sets FATFS configuration value _FS_TIMEOUT, scaled to milliseconds.
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Sets the number of milliseconds FATFS will wait to acquire a mutex when
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operating on an open file. For example, if one task is performing a lenghty
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operation, another task will wait for the first task to release the lock,
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and time out after amount of time set by this option.
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config FATFS_PER_FILE_CACHE
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bool "Use separate cache for each file"
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default y
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help
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This option affects FATFS configuration value _FS_TINY.
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If this option is set, _FS_TINY is 0, and each open file has its own cache,
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size of the cache is equal to the _MAX_SS variable (512 or 4096 bytes).
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This option uses more RAM if more than 1 file is open, but needs less reads
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and writes to the storage for some operations.
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If this option is not set, _FS_TINY is 1, and single cache is used for
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all open files, size is also equal to _MAX_SS variable. This reduces the
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amount of heap used when multiple files are open, but increases the number
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of read and write operations which FATFS needs to make.
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config FATFS_ALLOC_PREFER_EXTRAM
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bool "Perfer external RAM when allocating FATFS buffers"
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default y
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depends on SPIRAM_USE_CAPS_ALLOC || SPIRAM_USE_MALLOC
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help
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When the option is enabled, internal buffers used by FATFS will be allocated
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from external RAM. If the allocation from external RAM fails, the buffer will
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be allocated from the internal RAM.
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Disable this option if optimizing for performance. Enable this option if
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optimizing for internal memory size.
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2017-10-17 10:27:40 +00:00
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2020-08-03 17:26:59 +00:00
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config FATFS_USE_FASTSEEK
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2020-08-31 20:57:30 +00:00
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bool "Enable fast seek algorithm when using lseek function through VFS FAT"
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2020-08-03 17:26:59 +00:00
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default n
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help
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The fast seek feature enables fast backward/long seek operations without
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FAT access by using an in-memory CLMT (cluster link map table).
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2020-11-05 20:01:41 +00:00
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Please note, fast-seek is only allowed for read-mode files, if a
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file is opened in write-mode, the seek mechanism will automatically fallback
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to the default implementation.
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2020-08-03 17:26:59 +00:00
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2020-08-31 20:57:30 +00:00
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config FATFS_FAST_SEEK_BUFFER_SIZE
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int "Fast seek CLMT buffer size"
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default 64
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depends on FATFS_USE_FASTSEEK
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help
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If fast seek algorithm is enabled, this defines the size of
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CLMT buffer used by this algorithm in 32-bit word units.
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This value should be chosen based on prior knowledge of
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maximum elements of each file entry would store.
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2017-02-06 04:32:52 +00:00
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endmenu
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