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TMS 320 F28026 AIO pin 如何用作中断源



在我的使用场景下,需要给AIO4 管脚输入PWM波形,然后根据上升沿设置中断, 请教一下如何才能将AIO管脚设置为中断源?

或者有没有其他办法能捕获到上升沿呢(前提不变,PWM波形接入AIO4管脚)?

谢谢