摘要：
先上代码，这是 core_cm3.h 中关于 SysTick 寄存器的一些定义。/* SysTick Control / Status Register Definitions */#define SysTick_CTRL_COUNTFLAG_Pos 16 /*!< SysTick CTRL: COUNTFLAG Position */#define SysTick_CTRL_COUNTFLAG_Msk (1ul << SysTick_CTRL_COUNTFLAG_Pos... 阅读全文
