关于捕获输入，我试着去用其他的引脚来实现，但是结果很奇怪!!

381426068

关于捕获输入，我试着去用其他的引脚来实现，但是结果很奇怪!!
硬件上PA7和PA0直连，就改了红色框出来的地方，其他没做任何改动，库函数版本的捕获输入实验，
但是输出的us值如图，很奇怪，求救！！！！

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串口不断输出:

HIGH:9 us
HIGH:9 us
HIGH:9 us
HIGH:9 us
HIGH:9 us
HIGH:9 us
HIGH:9 us
HIGH:9 us

HIGH:9 us
HIGH:9 us
HIGH:9 us
HIGH:9 us
HIGH:9 us
HIGH:9 us

HIGH:9 us
HIGH:9 us
HIGH:9 us
HIGH:9 us
HIGH:9 us
HIGH:9 us
HIGH:9 us
HIGH:8 us

HIGH:8 us
HIGH:9 us
HIGH:8 us
HIGH:8 us
HIGH:9 us
HIGH:8 us

HIGH:8 us
HIGH:9 us
HIGH:8 us
HIGH:8 us
HIGH:9 us
HIGH:8 us
HIGH:8 us
HIGH:9 us

HIGH:8 us
HIGH:8 us
HIGH:9 us
HIGH:8 us
HIGH:8 us
HIGH:9 us

HIGH:8 us
HIGH:8 us
HIGH:9 us
HIGH:8 us
HIGH:8 us
HIGH:9 us
HIGH:8 us
HIGH:8 us

HIGH:9 us
HIGH:8 us
HIGH:8 us
HIGH:9 us
HIGH:8 us
HIGH:8 us

HIGH:9 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us

HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us

HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us

HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us

HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us
HIGH:8 us

HIGH:8 us
HIGH:8 us
HIGH:7 us
HIGH:8 us
HIGH:7 us
HIGH:7 us

HIGH:8 us
HIGH:7 us
HIGH:7 us
HIGH:8 us
HIGH:7 us
HIGH:7 us
HIGH:8 us
HIGH:7 us

HIGH:7 us
HIGH:8 us
HIGH:7 us
HIGH:7 us
HIGH:8 us
HIGH:7 us

HIGH:7 us
HIGH:8 us
HIGH:7 us
HIGH:7 us
HIGH:8 us
HIGH:7 us
HIGH:7 us
HIGH:8 us

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到底哪里错了???求助!!!!

wghfbj

开了AFIO时钟？   A7没开启重映射功能吧？？？

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不需要重映射，看参考手册截图

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其实AFIO都不需要开的

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有问题的源代码

简述途

楼主现在有解决么？呜呜，我也是这个问题