STM32中断初始化与PWM初始化冲突

中断函数初始化函数与PWM初始化函数冲突，两个只有一个是有效的，自己没搞明白，想让各位给看看问题究竟处在哪里

void RotaryInit(void)  //外部中断初始化
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);

GPIO_InitTypeDef GPIO_InitStructure;           //初始化GPIO为上拉输入
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOB,&GPIO_InitStructure);

GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource12);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource13);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource14);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource15);

EXTI_InitTypeDef EXTI_InitStructure;
EXTI_InitStructure.EXTI_Line=EXTI_Line12 | EXTI_Line13 | EXTI_Line14 | EXTI_Line15;
EXTI_InitStructure.EXTI_LineCmd=ENABLE;
EXTI_InitStructure.EXTI_Mode=EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Falling;
EXTI_Init(&EXTI_InitStructure);

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);      //中断分组2

NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel=EXTI15_10_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;
NVIC_Init(&NVIC_InitStructure);
}

void J1_J6PWM_Init(void)    //PWM初始化
{
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);

GPIO_InitTypeDef GPIO_InitStrcture;
GPIO_InitStrcture.GPIO_Mode=GPIO_Mode_AF_PP;
GPIO_InitStrcture.GPIO_Pin=GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStrcture.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStrcture);

GPIO_InitStrcture.GPIO_Mode=GPIO_Mode_AF_PP;
GPIO_InitStrcture.GPIO_Pin=GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_8 | GPIO_Pin_9;
GPIO_InitStrcture.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOB,&GPIO_InitStrcture);

TIM_InternalClockConfig(TIM3);
TIM_InternalClockConfig(TIM4);

TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStrcture;
TIM_TimeBaseInitStrcture.TIM_ClockDivision=TIM_CKD_DIV1;
TIM_TimeBaseInitStrcture.TIM_CounterMode=TIM_CounterMode_Up;
TIM_TimeBaseInitStrcture.TIM_Period=20000-1;
TIM_TimeBaseInitStrcture.TIM_Prescaler=72-1;
TIM_TimeBaseInitStrcture.TIM_RepetitionCounter=0;
TIM_TimeBaseInit(TIM3,&TIM_TimeBaseInitStrcture);

TIM_TimeBaseInitStrcture.TIM_ClockDivision=TIM_CKD_DIV1;
TIM_TimeBaseInitStrcture.TIM_CounterMode=TIM_CounterMode_Up;
TIM_TimeBaseInitStrcture.TIM_Period=20000-1;
TIM_TimeBaseInitStrcture.TIM_Prescaler=72-1;
TIM_TimeBaseInitStrcture.TIM_RepetitionCounter=0;
TIM_TimeBaseInit(TIM4,&TIM_TimeBaseInitStrcture);


TIM_OCInitTypeDef TIM_OCInitStrcture;
TIM_OCStructInit(&TIM_OCInitStrcture);
TIM_OCInitStrcture.TIM_OCMode=TIM_OCMode_PWM1;
TIM_OCInitStrcture.TIM_OCPolarity=TIM_OCPolarity_High ;
TIM_OCInitStrcture.TIM_OutputState=TIM_OutputState_Enable;
TIM_OCInitStrcture.TIM_Pulse=1500;
TIM_OC1Init(TIM3,&TIM_OCInitStrcture);

TIM_OCInitStrcture.TIM_OCMode=TIM_OCMode_PWM1;
TIM_OCInitStrcture.TIM_OCPolarity=TIM_OCPolarity_High ;
TIM_OCInitStrcture.TIM_OutputState=TIM_OutputState_Enable;
TIM_OCInitStrcture.TIM_Pulse=1500;
TIM_OC2Init(TIM3,&TIM_OCInitStrcture);

TIM_OCInitStrcture.TIM_OCMode=TIM_OCMode_PWM1;
TIM_OCInitStrcture.TIM_OCPolarity=TIM_OCPolarity_High ;
TIM_OCInitStrcture.TIM_OutputState=TIM_OutputState_Enable;
TIM_OCInitStrcture.TIM_Pulse=1500;
TIM_OC3Init(TIM3,&TIM_OCInitStrcture);

TIM_OCInitStrcture.TIM_OCMode=TIM_OCMode_PWM1;
TIM_OCInitStrcture.TIM_OCPolarity=TIM_OCPolarity_High ;
TIM_OCInitStrcture.TIM_OutputState=TIM_OutputState_Enable;
TIM_OCInitStrcture.TIM_Pulse=1500;
TIM_OC4Init(TIM3,&TIM_OCInitStrcture);

TIM_OCInitStrcture.TIM_OCMode=TIM_OCMode_PWM1;
TIM_OCInitStrcture.TIM_OCPolarity=TIM_OCPolarity_High ;
TIM_OCInitStrcture.TIM_OutputState=TIM_OutputState_Enable;
TIM_OCInitStrcture.TIM_Pulse=500;
TIM_OC3Init(TIM4,&TIM_OCInitStrcture);

TIM_OCInitStrcture.TIM_OCMode=TIM_OCMode_PWM1;
TIM_OCInitStrcture.TIM_OCPolarity=TIM_OCPolarity_High ;
TIM_OCInitStrcture.TIM_OutputState=TIM_OutputState_Enable;
TIM_OCInitStrcture.TIM_Pulse=1500;
TIM_OC4Init(TIM4,&TIM_OCInitStrcture);

TIM_Cmd(TIM3,ENABLE);
TIM_Cmd(TIM4,ENABLE);
}

编译无报错，可正常写入

最开始的问题是运行起来怎么都进不去中断函数，最开始以为是接线问题，于是把所有的线路都检查了一遍也没发现问题。然后我就想在调试模式看看，就发现不仅进不去中断函数，连这四个GPIO口竟然一直是低电平，哪怕我直接用3.3v接过去也是低电平，后来自己找到原因是这两个初始化函数相互冲突，不同时起作用，注释掉一个也不行，只能新建工程

有哪位好汉能给检查检查问题所在吗？

查看该引脚对应的原理图，看看这个引脚是不是有下拉电阻或者类似的器件，使其无法改变状态。
如果硬件没图的话，那就换个GPIO试试，找个官方引出的。

io口有烧坏的可能

原因我自己找到了，是和我另外一个PWM初始化的函数有冲突好像，两个只有一个能用，但是我把PWM初始化函数注释之后，中断还是进不去，只能新建一个工程