STM32 定时器如何设置启动后只触发一次中断

xiaoluoshan · 发表于 2019-6-28 20:55:30

STM32 定时器如何设置启动后只触发一次中断：
//放到主函数的初始化中初始化
void Timer1CountInitial(void)
{
//定时=36000/72000x2=0.001s=1ms;
      TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
      ///////////////////////////////////////////////////////////////
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);

      TIM_TimeBaseStructure.TIM_Period = 100-1;//自动重装值（此时改为100ms）
      TIM_TimeBaseStructure.TIM_Prescaler = 7200-1;//时钟预分频
      TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数
      TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;       //时钟分频1
      TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
      TIM_TimeBaseInit(TIM1,&TIM_TimeBaseStructure);

      TIM_ClearFlag(TIM1,TIM_FLAG_Update);
      TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE);
      TIM_Cmd(TIM1, ENABLE);
}

void TIM1_UP_IRQHandler(void)
{

if (TIM_GetITStatus(TIM1, TIM_IT_Update) != RESET)
{

//清除标志位 TIM_ClearFlag(TIM1,TIM_IT_Update);
｝

}