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我想对epwm1输出的一对互补波形的其中一路epwm1B在某一时刻(如电流大于阈值电流时)打低电平,待另一时刻(采样到的电流小于阈值时),恢复原来的互补输出,我想用TZ来做,可是按照epwm_trip_zone.c的例子调了半天还是做出,请高手指点,谢谢!