GPIO简介每个IO口可以自由编程，单IO口寄存器必须要按32位字被访问-GPIO introduction each IO mouth can freely programmable, single IO mouth registers must be accessed by 32-bit character

对stm32107的所有外设进行统一管理，解决ucos下上层应用对硬件访问的互斥问题-All peripherals for stm32107 unified management solution ucos upper application under exclusive access to hardware problems