stm32F103zet6 SD卡驱动代码，相互交流一下

MSP430单片机的SD卡驱动程序。在一些开发板的案例程序中拷贝过来，修改了其中的严重BUG，亲测可用。-MSP430 microcontroller SD card driver. In the case of some of the development board to copy the program, and modify the severity of BUG, pro test available.

SD card实现对SD卡的初始化，寄存器参数配置，读写控制-SD read and write