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我看到数据手册上说明28335可以最多输出18路PWM波形，但EPWM6个模块最多输出12路波形，请问下剩下6路从哪里输出？
另外，这6路输出占空比，频率怎么调节？
谢谢了。
eCAP模块可以当成APWM即辅助PWM来使用，故12PWM+6APWM=18PWM
每路APWM的CAP1(CAP3)设置周期，即所谓的频率，CAP2(CAP4)设置CMP值，即所谓的占空比。CAP1和CAP2是Active，CAP3和CAP4是Shadow。
