config FS_LITTLEFS bool "LITTLEFS File System" default n depends on !DISABLE_MOUNTPOINT ---help--- Build the LITTLEFS file system. https://github.com/littlefs-project/littlefs. if FS_LITTLEFS config FS_LITTLEFS_PROGRAM_SIZE_FACTOR int "LITTLEFS Program size multiplication factor" default 4 ---help--- A factor used for multiplying program size. The result is used as the minimum size of a block program in bytes. All program operations will be a multiple of the result. config FS_LITTLEFS_READ_SIZE_FACTOR int "LITTLEFS Read size multiplication factor" default FS_LITTLEFS_PROGRAM_SIZE_FACTOR ---help--- A factor used for multiplying read size. The result is used as the minimum size of a block read in bytes. All read operations will be a multiple of the result. config FS_LITTLEFS_BLOCK_SIZE_FACTOR int "LITTLEFS Block size multiplication factor" default 1 ---help--- A factor used for multiplying block size and dividing block count. The result is size of an erasable block in bytes. This does not impact ram consumption and may be larger than the physical erase size. However, non-inlined files take up at minimum one block. Must be a multiple of the read and program sizes. config FS_LITTLEFS_CACHE_SIZE_FACTOR int "LITTLEFS Cache size multiplication factor" default FS_LITTLEFS_READ_SIZE_FACTOR ---help--- A factor used for multiplying cache size. The result is size of block caches in bytes. Each cache buffers a portion of a block in RAM. The littlefs needs a read cache, a program cache, and one additional cache per file. A larger cache can improve performance by storing more data and reducing the number of disk accesses. It must be a multiple of the read and program sizes, and a factor of the block size. config FS_LITTLEFS_LOOKAHEAD_SIZE int "LITTLEFS Lookahead size" default 0 ---help--- Size of the lookahead buffer in bytes. A larger lookahead buffer increases the number of blocks found during an allocation pass. The lookahead buffer is stored as a compact bitmap, so each byte of RAM can track 8 blocks. Must be a multiple of 8. Set value 0 for enabling internal calculation. config FS_LITTLEFS_BLOCK_CYCLE int "LITTLEFS Block cycle" default 200 ---help--- Number of erase cycles before littlefs evicts metadata logs and moves the metadata to another block. Suggested values are in the range 100-1000, with large values having better performance at the cost of less consistent wear distribution. Set to -1 to disable block-level wear-leveling. config FS_LITTLEFS_NAME_MAX int "LITTLEFS LFS_NAME_MAX" default NAME_MAX ---help--- Configure LFS_NAME_MAX value for LITTLEFS file systems. Note: Using a larger value for this configuration makes the lfs_info structure larger and thus increases the stack usage. Note: To mount a LITTLEFS filesystem, this configuration should equal to or larger than the corresponding on-disk parameter. Note: Many of tools to generate LITTLEFS images use 255 for this by default. Note: NuttX releases prior to 10.4.0 (exclusive) uses 255 for this. If you need to mount LITTLEFS filesystems used by previous versions of NuttX, it's safer to use 255. config FS_LITTLEFS_FILE_MAX int "LITTLEFS LFS_FILE_MAX" default 2147483647 ---help--- Configure LFS_FILE_MAX value for LITTLEFS file systems. Note: To mount a LITTLEFS filesystem, this configuration should equal to or larger than the corresponding on-disk parameter. Note: Many of tools to generate LITTLEFS images use 2147483647 for this by default. config FS_LITTLEFS_ATTR_MAX int "LITTLEFS LFS_ATTR_MAX" default 1022 ---help--- Configure LFS_ATTR_MAX value for LITTLEFS file systems. Note: To mount a LITTLEFS filesystem, this configuration should equal to or larger than the corresponding on-disk parameter. Note: because NuttX's LITTLEFS driver does never use custom attributes, the value of this configuration doesn't matter much. The default value here is chosen to be compatible with filesystems created by external tools. Unlike LFS_NAME_MAX, a large LFS_ATTR_MAX value doesn't have any runtime overhead, at least with the implementation as of writing this. Note: Many of tools to generate LITTLEFS images use 1022 for this by default. config FS_LITTLEFS_LOCAL_PATCHES bool depends on FS_LITTLEFS_VERSION = "v2.5.1" default y ---help--- For the internal use to control the application of NuttX local patches for LITTLEFS. This is NOT expected to be tweaked directly by users. config FS_LITTLEFS_HAS_LFS_DEFINES bool "Use LFS_DEFINES (available for littlefs >=2.10.0)" depends on !FS_LITTLEFS_LOCAL_PATCHES default y ---help--- Set this y if you are using littlefs versions which supports LFS_DEFINES. (that is, 2.10.0 and later) Otherwise, set this n. See the littlefs 2.10.0 release notes about what LFS_DEFINES is. https://github.com/littlefs-project/littlefs/releases/tag/v2.10.0 config FS_LITTLEFS_ATTR_UPDATE bool "LITTLEFS update attributes" depends on FS_LITTLEFS_ATTR_MAX > 0 depends on FS_LITTLEFS_LOCAL_PATCHES default y ---help--- Enable support for attributes when create a file. CAVEAT: This feature is implemented with NuttX specific modifications to LITTLEFS v2.5.1. The modifications might not be compatible with other versions of LITTLEFS. config FS_LITTLEFS_GETPATH bool "LITTLEFS FIOC_FILEPATH ioctl support" depends on FS_LITTLEFS_LOCAL_PATCHES default y ---help--- FIOC_FILEPATH ioctl support for LITTLEFS file system. CAVEAT: This feature is implemented with NuttX specific modifications to LITTLEFS v2.5.1. The modifications might not be compatible with other versions of LITTLEFS. config FS_LITTLEFS_VERSION string "LITTLEFS version to use" default "v2.5.1" ---help--- The LITTLEFS version to use. config FS_LITTLEFS_MULTI_VERSION bool "Support multiple on-disk versions" default n ---help--- Enable LFS_MULTIVERSION for LITTLEFS file system config FS_LITTLEFS_DISK_VERSION hex "LITTLEFS on-disk version" default 0x0 depends on FS_LITTLEFS_MULTI_VERSION ---help--- The LITTLEFS disk version to use. 0 means to leave it to the default from the LITTLEFS. 0x00020000 means 2.0. 0x00020001 means 2.1. endif