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timer__cc读取频率问题

Other Parts Discussed in Thread: CC3200

我通过pin4脚对板子输入一个六七千赫兹左右频率的脉冲信号,在超级终端上显示的是超过一万赫兹的频率,并且我输入的信号的波动并不会在终端上显示出来,也就是说,终端上打印的值虽然一直在更新,但是不变化,我想不通这个,是什么情况