基于Cortex M3的微处理器STM32F103VG的IO口操作功能模块，C语言编程，Keil编译环境，利用寄存器直接编程。已编译成功，可直接利用。谢谢。-STM32F103VG Cortex M3 microprocessor-based IO port operation function module, C language programming, Keil compiler environment, use register direct programming. Has been