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28335 PWM可否用GPIO的GPAMUX1来切换



想控制切换输出两路PWM的一路,让一路输出PWM,另一路拉低,然后再回复两路PWM。由于配置的是互补型,当一路从PWM输出用GPIO控制拉低后,可以实现,但是当从GPIO切换回PWM时没有输出波形。。有没有什么好的方法?还是我从GPIO改回PWM后要对PWM寄存器重新使能一次?