26 lines
917 B
Markdown
26 lines
917 B
Markdown
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# File System Interface
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LVGL has a [File system](https://docs.lvgl.io/en/html/overview/file-system.html) module to attach memories which can manipulate with files. Here you can find interfaces to
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- FATFS
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- PC (Linux and Windows using C standard function .e.g fopen, fread)
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- POSIX (Linux and Windows using POSIX function .e.g open, read)
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file systems.
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You still need to provide the drivers and libraries, this repo gives "only" the bridge between FATFS/PC/etc and LittlevGL.
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## Usage
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1. Add these lines to you `lv_conf.h`:
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```c
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/*File system interface*/
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#define LV_USE_FS_IF 1
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#if LV_USE_FS_IF
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# define LV_FS_IF_FATFS '\0'
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# define LV_FS_IF_PC '\0'
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# define LV_FS_IF_POSIX '\0'
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#endif /*LV_USE_FS_IF*/
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```
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2. Enable an interface you need by changing `'\0'` to letter you want to use for that drive. E.g. `'S'` for SD card with FATFS.
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3. Call `lv_fs_if_init()` to register the enabled interfaces.
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