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CMPA 值通过外部输入（input port）， 那么CMPA 的初始值怎么设置（CMPA initial value), 一般设置多少？
从手册看到 CMPA
R/W-0LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
看你的PWM动作是怎么设计的，一般来讲，CMPA初始值为0.你可以看一下初始值为0是PWM波形是什么。
Eric
