Hi haifeng,
由RT1050的RM这个章节：
可以知道，其实扫描是由软件来决定的。
如果你要放慢扫描速度，你可以看看这个API，把定时器调时间长点
希望能帮到你。
如果还有问题，欢迎继续交流。
Have a great day,
Kerry
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