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在上电程序运行时,在特殊的时刻PWM信号会丢失掉一个。我查过DSP的供电是正常的,程序里面也没有设置占空比等于0的情况。请问,有哪些情况会导致PWM信号丢失呢?如果是干扰,那是干扰了什么,RAM?丢失了一个信号,其它的PWM信号都是正常的。求高手指教!