FatFs - Generic FAT Filesystem Module


layer

FatFs is a generic FAT/exFAT filesystem module for small embedded systems. The FatFs module is written in compliance with ANSI C (C89) and completely separated from the disk control layer. Therefore it is independent of the platforms and storage devices. It can be incorporated into small microcontrollers with limited resource, such as 8051, PIC, AVR, ARM, Z80, RX and etc. Also Petit FatFs module for tiny microcontrollers is available here.

Features

Application Interface

layer

FatFs provides various filesystem functions for the applications as shown below.

Media Access Interface

layer

Since FatFs module is the Filesystem Layer independent of platforms and storage media, it is completely separated from the physical devices, such as memory card, harddisk and any type of storage device. The storage device control module is not a part of FatFs module and it needs to be provided by implementer. FatFs controls the storage devices via a simple media access interface shown below. Also sample implementations for some platforms are available in the downloads. A function checker for storage device control module is available here.

Resources

The FatFs module is a free software opened for education, research and development. You can use, modify and/or redistribute it for any purpose without any restriction under your responsibility. For further information, refer to the application note.


Return