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MSP430F6638IO端口中断问题,求解决。。



描述:MSP430F6638IO端口中断时,它的IO端口捕捉中断时是捕捉的上升沿还是下降沿?我知道能在PXIES中设置,相应的位为0时是上升沿,为1时是下降沿中断,但是如果不设置的话也就是默认的话是上升沿还是下降沿呢?手册上是说PXIES复位时值不确定,求解答。。