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51单片机矩阵键盘(检测按键按下,长按,抬起)

矩阵键盘原理图如图所示

image text

最终检测效果

image text

多按键按下的结果

image text

有个bug仍需要解决就是多按键按下后触发事件之后,抬起其中一个按键,按道理应该有个先抬和后抬按键的事件触发,但是目前现在就是必须两个按键全都抬起后才能重新按下触发事件,所以现在在解决这个问题

目前还在补充多按键中出现的bug

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