FatFs Module Source Files R0.12 FILES 00readme.txt This file. history.txt Revision history. ffconf.h Configuration file for FatFs module. ff.h Common include file for FatFs and application module. ff.c FatFs module. diskio.h Common include file for FatFs and disk I/O module. diskio.c An example of glue function to attach existing disk I/O module to FatFs. integer.h Integer type definitions for FatFs. option Optional external functions. Low level disk I/O module is not included in this archive because the FatFs module is only a generic file system layer and not depend on any specific storage device. You have to provide a low level disk I/O module that written to control the target storage device.