TIM5输入捕获实验死也调试不出来啊。，初始化函数照抄的。。。。###可以打印，***不能啊，

xxoospring · 发表于 2015-8-5 17:32:11

void TIM5_Cap_Init(u32 arr,u32 psc)
{
GPIO_InitTypeDef GPIO_InitStruct;
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;
TIM_ICInitTypeDef TIM_ICInitStruct;
NVIC_InitTypeDef NVIC_InitStruct;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5,ENABLE);

GPIO_PinAFConfig(GPIOA,GPIO_PinSource0,GPIO_AF_TIM5);
GPIO_InitStruct.GPIO_Pin = GPIO_PinSource0;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_DOWN;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_Init(GPIOA,&GPIO_InitStruct);

TIM_TimeBaseInitStruct.TIM_Prescaler = psc;
TIM_TimeBaseInitStruct.TIM_Period = arr;
TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInit(TIM5,&TIM_TimeBaseInitStruct);

TIM_ICInitStruct.TIM_Channel = TIM_Channel_1;//TI1
TIM_ICInitStruct.TIM_ICPolarity = TIM_ICPolarity_Rising;//上升沿捕获
TIM_ICInitStruct.TIM_ICFilter = 0;//不滤波
TIM_ICInitStruct.TIM_ICSelection = TIM_ICSelection_DirectTI;//直接映射
TIM_ICInitStruct.TIM_ICPrescaler = TIM_ICPSC_DIV1;//预分频，不分频
TIM_ICInit(TIM5,&TIM_ICInitStruct);

TIM_ITConfig(TIM5,TIM_IT_Update|TIM_IT_CC1,ENABLE);
TIM_Cmd(TIM5,ENABLE);

NVIC_InitStruct.NVIC_IRQChannel = TIM5_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
}

void TIM5_IRQHandler(void)
{
if(TIM_GetITStatus(TIM5,TIM_IT_CC1)==SET)
printf("***\n");
if(TIM_GetITStatus(TIM5,TIM_IT_Update)==SET)
printf("###%d\n",TIM5->CNT);
}