多功能按键可以使用一系列的按键事件来触发某个程序是否执行下列程序单击可以切换LED的亮灭多功能按键的使用需要先声明动作（单击，双击等）与状态（按键按下的状态）分别改变动作条件，对比不同动作的特点按键未按下时应该固定上拉或者下拉悬空可设置为管脚上拉模式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