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我想将某个GIO口作为中断输入口,捕获边沿触发,但是现在一直进不来中断?

1,具体的配置流程有没有,希望进行一下核实,查看是否存在配置遗漏

2,如果我希望捕获边沿,那么中断源有什么方式可以进行模拟(没有信号发生器)

谢谢各位大神!