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资源使用说明:
默认硬件接口---调试串口 USART2(PA2,PA3)
默认硬件接口---毫秒定时器 tim4
默认硬件接口---调试指示灯 PA1
版本说明:
V1.0:初始化工程,配置好调试串口,调试指示灯,毫秒定时器,引入libiflytop_micro