定时器TIM_ITConfig，初始化加上这个就不行了，有什么前提么

qq88714082010

[mw_shl_code=c,true]/***************************** * ?¨?±?÷2???? * *****************************/ void AD_CW_TIM2_Configuration(void) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; NVIC_InitTypeDef NVIC_InitStructure; TIM_DeInit(TIM2); /* TIM6 Periph clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); /* Time base configuration */ TIM_TimeBaseStructInit(&TIM_TimeBaseStructure); TIM_TimeBaseStructure.TIM_Period =10-1;//0X3D 20000-1 TIM_TimeBaseStructure.TIM_Prescaler = 840-1;//8400-1 TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); /* TIM6 TRGO selection */ TIM_SelectOutputTrigger(TIM2, TIM_TRGOSource_Update); NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE);//加上这句就跑飞了，为啥呢？ /* TIM6 enable counter */ TIM_Cmd(TIM2, ENABLE); //TIM_CtrlPWMOutputs(TIM2, ENABLE); }[/mw_shl_code]

chy712

中断程序呢？
你该不会中断程序都没写就开中断了吧？

BigWorld

我也遇到过类似问题。TIM3 4个通道都使能捕获了，但是只要一开CH3、CH4的中断，就不知道走了
CH1、CH2的中断可以。中断处理函数写了。
void Timer3ISR(void)
{
    int ret;

    //TIM3, CH2通道
    ret = TIM_GetFlagStatus(TIM3, TIM_FLAG_CC2);
    if (ret)
    {
        TIM_ClearITPendingBit(TIM3, TIM_IT_CC2);
        Tim3Ch2Isr();
    }

    //TIM3, CH1通道
    ret = TIM_GetFlagStatus(TIM3, TIM_FLAG_CC1);
    if (ret)
    {
        TIM_ClearITPendingBit(TIM3, TIM_IT_CC1);
        Tim3Ch1Isr();
    }

    //TIM3, CH3通道
    ret = TIM_GetFlagStatus(TIM3, TIM_FLAG_CC3);
    if (ret)
    {
        TIM_ClearITPendingBit(TIM3, TIM_IT_CC3);
        Tim3Ch3Isr();
    }

    //TIM3, CH4通道
    ret = TIM_GetFlagStatus(TIM3, TIM_FLAG_CC4);
    if (ret)
    {
        TIM_ClearITPendingBit(TIM3, TIM_IT_CC4);
        Tim3Ch4Isr();
    }
}