//将互补CH1N 输出pwm与CH1输出相同的波形
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; //输出极性:TIM输出比较极性高
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High; //输出极性:TIM输出比较极性高
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
将输出极性 相反输出和空闲状态期间的TIM输出比较引脚状态输出相反,两者需要同时设置,只设置一个无法完成反转