STM32F107系列的底层驱动代码.

该源码是arm芯片stm32实现OTG功能的驱动-The source is the arm chip stm32 drive to achieve OTG function

基于stm32的USB-OTG的,对U盘文件（FATfs文件系统）读写操作的的程序源码。工程文件有IAR和mdk两个版本了。-Stm32 USB-OTG, U disk file read and write (file system FatFs to) the operation of the program source code. IAR and MDK two versions of project files.

OTG功能-对U盘的访问，使用USB功能的STM32微处理器-The OTG function on the U disk access, use the USB function of the STM32 microprocessor