GD32F130定时中断一开定时器很快就进入中断

只看该作者 · 2023-4-3 13:53

void timer_config(void)
{
timer_parameter_struct TIM_TimeBaseStructure;  //定义时基单元初始化结构体
rcu_periph_clock_enable(RCU_TIMER1);
nvic_irq_enable(TIMER1_IRQn,3,0);

timer_deinit(TIMER1);
TIM_TimeBaseStructure.prescaler       =  9999;
TIM_TimeBaseStructure.period          =  47999;
TIM_TimeBaseStructure.repetitioncounter =  0;
TIM_TimeBaseStructure.alignedmode    =  TIMER_COUNTER_EDGE;
TIM_TimeBaseStructure.counterdirection  =  TIMER_COUNTER_UP;
TIM_TimeBaseStructure.clockdivision    =  TIMER_CKDIV_DIV1;
timer_init(TIMER1,&TIM_TimeBaseStructure);

timer_interrupt_flag_clear(TIMER1,TIMER_INT_FLAG_UP);
timer_interrupt_enable(TIMER1,TIMER_INT_UP);
timer_enable(TIMER1);
}

void TIMER1_IRQHandler(void)
{
if(timer_interrupt_flag_get(TIMER1,TIMER_INT_FLAG_UP))  //如果发生了更新事件中断
{
         timer_interrupt_flag_clear(TIMER1,TIMER_INT_FLAG_UP);
   }
}

设定定时器10s进入一次中断，但是将断点达到中断函数中运行，很快就进入了中断。  继续运行进入中断的时间为10s正常