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关于msp430f149独立按键的问题,求解答,谢谢~

Other Parts Discussed in Thread: MSP430F149

我用msp430f149做独立按键时,直接将按键一段接P1口,一端接地,如果我将端口设置为输出,然后通过检查低电平来判断按键是否按下可以吗?