STM32 内部nand 文件系统

代码说明：

FILES   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.   integer.h  Alternative type definitions for integer variables.   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 your storage device.