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想要给openmv的引脚外接按键,实现外部中断,只需要一端连接pin,一端连接openmv的GND就可以实现低电平触发吗,需要像单片机一样接上拉电阻一类的吗?
https://docs.singtown.com/micropython/zh/latest/openmvcam/library/pyb.Pin.html
可以开启芯片内部上拉电阻。