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专家您好:
我在使用28335的epwm模块时,需要根据一些外部条件来更新脉冲的高、低有效方式,可通过在epwm1中断里设置AQCTLA.bit.CAD与AQCTLA.bit.CAU实现,但是由于此寄存器与CMPCTL不同,没有映射模式,会立即生效,而我希望是在TBCTR=0时才改变脉冲配置方式,请问如何实现相关功能?谢谢