stm32f030c8t6 定时器主从模式 TIM16主 TIM15从 标准库配置不成功

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void tim16_init(void)
{
/* Time Base configuration */
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef       TIM_OCInitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM16, ENABLE);
TIM_TimeBaseStructure.TIM_Prescaler = 8 - 1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = 1200 - 1;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM16, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 600;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OC1Init(TIM16, &TIM_OCInitStructure);

TIM_SelectMasterSlaveMode(TIM16, TIM_MasterSlaveMode_Enable);
TIM_SelectOutputTrigger(TIM16, TIM_TRGOSource_OC2Ref);
TIM_ARRPreloadConfig(TIM16, ENABLE);
TIM_CtrlPWMOutputs(TIM16, ENABLE);
TIM_Cmd(TIM16, ENABLE);
}

void TIM15_init(void)
{
GPIO_InitTypeDef         GPIO_InitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_OCInitTypeDef        TIM_OCInitStructure;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOA, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM15, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_0);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_1);
TIM_DeInit(TIM15);
TIM_TimeBaseStructure.TIM_Period = 1200 - 1;
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_RepetitionCounter = 8;  //repetition updta N trigger interrupte
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM15, &TIM_TimeBaseStructure);
/* PWM1 Mode configuration: Channel1 */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 600;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OC1Init(TIM15, &TIM_OCInitStructure);
TIM_OC2Init(TIM15, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM15, TIM_OCPreload_Enable);
TIM_OC2PreloadConfig(TIM15, TIM_OCPreload_Enable);
TIM_SelectSlaveMode(TIM15, TIM_SlaveMode_Gated);
TIM_SelectMasterSlaveMode(TIM15, TIM_MasterSlaveMode_Enable);
TIM_SelectInputTrigger(TIM15, TIM_TS_ITR2);
TIM_ARRPreloadConfig(TIM15, ENABLE);
TIM_CtrlPWMOutputs(TIM15, ENABLE);
TIM_Cmd(TIM15, ENABLE);
}

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当配置TIM16的PWM时，TIM15_CH1没有PWM输出，原先是有PWM输出的

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请问哪位配置过