STM32 定时器中断配置心得【自用】

1.IO配置 略

2.TIM配置 

void TIM2_Config(void)  

{  

    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;  

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);  

    /* Time base configuration */                                            

    TIM_TimeBaseStructure.TIM_Period =359999;  

    TIM_TimeBaseStructure.TIM_Prescaler = 99;                        

    TIM_TimeBaseStructure.TIM_ClockDivision = 0;

    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;    

    TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);  

    TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE );  务必使能定时器中断

    TIM_Cmd(TIM2, ENABLE);                                                      //????TIM32

} 

3.中断向量配置

 void NVIC_Configuration(void)

{

  NVIC_InitTypeDef NVIC_InitStructure;

  /* Configure one bit for preemption priority */

  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);   //中断组别    0抢占优先级  4位响应优先级  16个级别

  NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;  //中断通道设置

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;  //抢占优先级

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;   //响应优先级

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;  

  NVIC_Init(&NVIC_InitStructure);

}

4.中断服务函数
void TIM2_IRQHandler(void)
 {
   TIM_ClearITPendingBit(TIM2, TIM_IT_Update);//清除中断标志位
    /*写入函数*/
 }