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上电debug运行程序,自动进入控制PWM波的中断



你好,我用的芯片上C6747,ccsv5.3

,将对PWM波的控制连接到CPU中断12,手动进行中断控制,现在出现这样的现象:上电debug运行程序后,自动进入中断12,但在这之前并没有手动将中断12置位,而且进入一次后不会再进入中断12,除非将中断12手动置位。请问这是什么原因