如题，要用TIM1从PB1输出PWM，查看数据手册，PB1支持TIM1_CH3N互补输出，部分复用，代码如下，为啥没输出？

	GPIO_InitTypeDef?GPIO_InitStructure={0};
	TIM_OCInitTypeDef?TIM_OCInitStructure={0};
	TIM_TimeBaseInitTypeDef?TIM_TimeBaseInitStructure={0};

	RCC_APB2PeriphClockCmd(?RCC_APB2Periph_AFIO?|?RCC_APB2Periph_GPIOB?|?RCC_APB2Periph_TIM1,?ENABLE?);
	GPIO_PinRemapConfig(GPIO_PartialRemap_TIM1,?ENABLE);

	GPIO_InitStructure.GPIO_Pin?=?GPIO_Pin_1;
	GPIO_InitStructure.GPIO_Mode?=?GPIO_Mode_AF_PP;
	GPIO_InitStructure.GPIO_Speed?=?GPIO_Speed_50MHz;
	GPIO_Init(GPIOB,?&GPIO_InitStructure);

	TIM_TimeBaseInitStructure.TIM_Period?=?arr;
	TIM_TimeBaseInitStructure.TIM_Prescaler?=?psc;
	TIM_TimeBaseInitStructure.TIM_ClockDivision?=?TIM_CKD_DIV1;
	TIM_TimeBaseInitStructure.TIM_CounterMode?=?TIM_CounterMode_Up;
	TIM_TimeBaseInit(TIM1,?&TIM_TimeBaseInitStructure);

#if?(PWM_MODE?==?PWM_MODE1)
??TIM_OCInitStructure.TIM_OCMode?=?TIM_OCMode_PWM1;

#elif?(PWM_MODE?==?PWM_MODE2)
	TIM_OCInitStructure.TIM_OCMode?=?TIM_OCMode_PWM2;

#endif

	TIM_OCInitStructure.TIM_OutputState?=?TIM_OutputState_Disable;
	TIM_OCInitStructure.TIM_OCPolarity?=?TIM_OCPolarity_High;
	TIM_OCInitStructure.TIM_OCIdleState?=?TIM_OCIdleState_Reset;

	TIM_OCInitStructure.TIM_OutputNState?=?TIM_OutputNState_Enable;
	TIM_OCInitStructure.TIM_OCNPolarity?=?TIM_OCPolarity_High;
	TIM_OCInitStructure.TIM_OCNIdleState?=?TIM_OCIdleState_Set;

	TIM_OCInitStructure.TIM_Pulse?=?ccp;

	TIM_OC3Init(TIM1,?&TIM_OCInitStructure?);
	TIM_CtrlPWMOutputs(TIM1,?ENABLE?);
	TIM_OC3PreloadConfig(?TIM1,?TIM_OCPreload_Enable?);
	TIM_ARRPreloadConfig(?TIM1,?ENABLE?);

	TIM_Cmd(?TIM1,?ENABLE?);

有输出，是我的开发板有问题，谢谢。