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我希望通过检测高低电平来使用按键，目前的都是下降沿或上升沿触发，那能不能设置为电平触发呢？
求各位大神指点下
cc2540/2541不支持电平中断！
好吧，看来只能放弃了，谢谢了
按键做电平触发是很危险的，不适用啊，因为你按键的关键指标是去抖，没必要电平触发
