lvgl/docs/libs/fsdrv.md

```eval_rst
.. include:: /header.rst 
:github_url: |github_link_base|/libs/fsdrv.md
```

# File System Interfaces

LVGL has a [File system](https://docs.lvgl.io/master/overview/file-system.html) module to provides an abstraction layer for various file system drivers.

LVG has build in support for
- [FATFS](http://elm-chan.org/fsw/ff/00index_e.html)
- STDIO (Linux and Windows using C standard function .e.g fopen, fread)
- POSIX (Linux and Windows using POSIX function .e.g open, read)

You still need to provide the drivers and libraries, this extensions provide only the bridge between FATFS, STDIO, POSIX and LVGL.

## Usage

In `lv_conf.h` set a driver letter for one or more `LV_FS_USE_...` define(s). After that you can access files using that driver letter. Setting `'\0'` will disable use of that interface.
arch add small 3rd party libs to lvgl (#2569) * move png, sjpg, bmp, gif, fs_if to extra/libs * reorganize the examples * update lv_conf_internal.h * fix warnings * add freetype * remove unused assets * add the new libs to build tests * update the docs 2021-10-04 14:34:11 +02:00			```eval_rst
			`.. include:: /header.rst`
fix(fsdrv) minor fs issue (#2682) * fix(fs): replace all tab to space and other minor style fix Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> * fix(extra/fs): rename lv_fs_libs.h to lv_fsdrv.h Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> * fix(extra/fs/stdio): fix the wrong directory path in fs_dir_open and remove the duplicated or platform specific code Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> * fix(extra/fs/posix): implement in fs_dir_read and fix the wrong directory path in fs_dir_open Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> * fix(extra/fs/posix): return file handle directly to avoid malloc Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> 2021-10-18 06:00:47 -05:00			`:github_url: \|github_link_base\|/libs/fsdrv.md`
arch add small 3rd party libs to lvgl (#2569) * move png, sjpg, bmp, gif, fs_if to extra/libs * reorganize the examples * update lv_conf_internal.h * fix warnings * add freetype * remove unused assets * add the new libs to build tests * update the docs 2021-10-04 14:34:11 +02:00			```

			`# File System Interfaces`

			`LVGL has a [File system](https://docs.lvgl.io/master/overview/file-system.html) module to provides an abstraction layer for various file system drivers.`

			`LVG has build in support for`
			`- [FATFS](http://elm-chan.org/fsw/ff/00index_e.html)`
			`- STDIO (Linux and Windows using C standard function .e.g fopen, fread)`
			`- POSIX (Linux and Windows using POSIX function .e.g open, read)`

			`You still need to provide the drivers and libraries, this extensions provide only the bridge between FATFS, STDIO, POSIX and LVGL.`

			`## Usage`

			In `lv_conf.h` set a driver letter for one or more `LV_FS_USE_...` define(s). After that you can access files using that driver letter. Setting `'\0'` will disable use of that interface.