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https://github.com/zephyrproject-rtos/zephyr
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e43ec70d4f
The commit adds FS_FATFS_READ_ONLY Kconfig option; the option, when selected, excludes write supporting code within ELM FAT driver. When write support to FAT FS volumes is not desired, this option may be selected to slightly reduce code size. Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>
132 lines
3.1 KiB
Plaintext
132 lines
3.1 KiB
Plaintext
# Copyright (c) 2016 Intel Corporation
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# Copyright (c) 2020 Nordic Semiconductor ASA
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# SPDX-License-Identifier: Apache-2.0
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config FAT_FILESYSTEM_ELM
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bool "ELM FAT file system support"
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depends on FILE_SYSTEM
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select DISK_ACCESS
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help
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Use the ELM FAT File system implementation.
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if FAT_FILESYSTEM_ELM
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menu "ELM FAT file system settings"
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visible if FAT_FILESYSTEM_ELM
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config FS_FATFS_READ_ONLY
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bool "Read-only support for all volumes"
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help
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The option excludes write code from ELM FAT file system driver;
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when selected, it no longer will be possible to write data on
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the FAT FS.
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If write support is not needed, enabling this flag will slightly
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reduce application size.
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This option translates to _FS_READONLY within ELM FAT file system
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driver; it enables exclusion, from compilation, of write supporting
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code.
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config FS_FATFS_MKFS
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bool
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help
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This option translates to _USE_MKFS within ELM FAT file system
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driver; it enables additional code that is required for formatting
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volumes to ELM FAT.
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config FS_FATFS_MOUNT_MKFS
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bool "Allow formatting volume when mounting fails"
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default y
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select FS_FATFS_MKFS
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help
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This option adds code that allows fs_mount to attempt to format
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a volume if no file system is found.
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If formatting is not needed, disabling this flag will slightly
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reduce application size.
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config FS_FATFS_EXFAT
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bool "Enable exFAT support"
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select FS_FATFS_LFN
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help
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Enable the exFAT format support for FatFs.
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config FS_FATFS_NUM_FILES
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int "Maximum number of opened files"
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default 4
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config FS_FATFS_NUM_DIRS
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int "Maximum number of opened directories"
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default 4
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config FS_FATFS_LFN
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bool "Enable long filenames (LFN)"
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help
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Without long filenames enabled, file names are limited to 8.3 format.
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This option increases working buffer size.
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if FS_FATFS_LFN
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choice
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prompt "LFN memory mode"
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default FS_FATFS_LFN_MODE_BSS
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config FS_FATFS_LFN_MODE_BSS
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bool "Static buffer"
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help
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Enable LFN with static working buffer on the BSS. Always NOT thread-safe.
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config FS_FATFS_LFN_MODE_STACK
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bool "Stack buffer"
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help
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Enable LFN with dynamic working buffer on the STACK.
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config FS_FATFS_LFN_MODE_HEAP
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bool "Heap buffer"
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help
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Enable LFN with dynamic working buffer on the HEAP.
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endchoice
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config FS_FATFS_MAX_LFN
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int "Max filename length"
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range 12 255
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default 255
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help
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The working buffer occupies (FS_FATFS_MAX_LFN + 1) * 2 bytes and
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additional 608 bytes at exFAT enabled.
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It should be set 255 to support full featured LFN operations.
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endif # FS_FATFS_LFN
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config FS_FATFS_CODEPAGE
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int "FatFS code page (character set)"
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default 437 if FS_FATFS_LFN
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default 1
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help
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Valid code page values:
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1 - ASCII (No extended character. Non-LFN cfg. only)
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437 - U.S.
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720 - Arabic
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737 - Greek
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771 - KBL
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775 - Baltic
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850 - Latin 1
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852 - Latin 2
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855 - Cyrillic
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857 - Turkish
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860 - Portuguese
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861 - Icelandic
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862 - Hebrew
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863 - Canadian French
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864 - Arabic
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865 - Nordic
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866 - Russian
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869 - Greek 2
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932 - Japanese (DBCS)
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936 - Simplified Chinese (DBCS)
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949 - Korean (DBCS)
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950 - Traditional Chinese (DBCS)
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endmenu
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endif # FAT_FILESYSTEM_ELM
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