TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //High TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low; // TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //High TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCPolarity_High; // 这里控制具体是什么意思或有何区别？
