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第1章 系统节拍定时(SysTick)..............................................................................1 1.1 SysTick功能简介.........................................................................................................1 1.2 SysTick基本操作.........................................................................................................1 1.3 SysTick中断控制.........................................................................................................3 1.4 SysTick应用:模拟PC按键重复特性......................................................................5

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