stm32 TIM3中断一直进不去,求大虾指点
void TIM3_Configuration(){
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
TIM_DeInit(TIM3);
TIM_TimeBaseStructure.TIM_Period=2000; //ARR的值
TIM_TimeBaseStructure.TIM_Prescaler=36000;
TIM_TimeBaseStructure.TIM_ClockDivision=0; //采样分频
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
TIM_ClearFlag(TIM3, TIM_FLAG_Update);
TIM_ARRPreloadConfig(TIM3, DISABLE);//禁止ARR预装载缓冲器
TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE);
TIM_Cmd(TIM3, ENABLE); //开启时钟
}
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x20000000 [设置中断向量表的起始位置0x20000000]*/
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else /* VECT_TAB_FLASH */
/* Set the Vector Table base location at 0x08000000[设置中断向量表的起始位置0x0x08000000] */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void TIM3_IRQHandler(void)
{
if(TIM_GetFlagStatus(TIM3,TIM_IT_Update)!=RESET)
{
//TIM_ClearITPendingBit(TIM3,TIM_FLAG_Update);
GPIO_ResetBits(GPIOB,GPIO_Pin_3);
count++;
if(count>100)count=0;
}
}
回复:stm32 TIM3中断一直进不去,求大虾指点
没人吗????求大虾指点!!!在线等!!!RE:stm32 TIM3中断一直进不去,求大虾指点
TIM_ClearITPendingBit(TIM3,TIM_FLAG_Update);你都把这句话屏蔽了,进入中断服务函数怎么出来呢
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