mklittlefs
Tool to build and unpack littlefs images. Based off of mkspiffs by Ivan Grokhotkov.
Usage
mklittlefs {-c <pack_dir>|-u <dest_dir>|-l|-i} [-d <0-5>] [-b <number>]
[-p <number>] [-s <number>] [--] [--version] [-h]
<image_file>
Where:
-c <pack_dir>, --create <pack_dir>
(OR required) create littlefs image from a directory
-- OR --
-u <dest_dir>, --unpack <dest_dir>
(OR required) unpack littlefs image to a directory
-- OR --
-l, --list
(OR required) list files in littlefs image
-- OR --
-d <0-5>, --debug <0-5>
Debug level. 0 means no debug output.
-b <number>, --block <number>
fs block size, in bytes
-p <number>, --page <number>
fs page size, in bytes
-s <number>, --size <number>
fs image size, in bytes
--, --ignore_rest
Ignores the rest of the labeled arguments following this flag.
--version
Displays version information and exits.
-h, --help
Displays usage information and exits.
<image_file>
(required) LittleFS image file
Build
You need gcc (≥4.8) or clang(≥600.0.57), and make. On Windows, use MinGW.
Run:
$ git submodule update --init
$ make distLittleFS configuration
Some LittleFS options which are set at mklittlefs build time affect the format of the generated filesystem image. Make sure such options are set to the same values when builing mklittlefs and when building the application which uses LittleFS.
These options include:
- LFS_NAME_MAX
- possibly others
To see the default values of these options, check MAkefile file in this repository.
To override some options at build time, pass extra CPPFLAGS to make. You can also set BUILD_CONFIG_NAME variable to distinguish the built binary:
$ make clean
$ make dist CPPFLAGS="-DLFS_NAME_MAX=128" BUILD_CONFIG_NAME=-customTo check which options were set when building mklittlefs, use --version command:
$ mklittlefs --version
./mklittlefs version: 0.2.3-6-g9a0e072
Cross-compiling
To build for all cross compiled targets, run
docker run --user $(id -u):$(id -g) --rm -v $(pwd):/workdir earlephilhower/gcc-cross bash -c "cd /workdir; bash build-cross.sh"
License
MIT
To do
- Add more debug output and print LittleFS debug output
- Error handling
- Code cleanup