STM32高级定时器为什么开启不了定时中断？

只看该作者 · 2022-3-22 11:00

STM32f103c8t6的tiM1的开启不了定时中断，以下是我的代码。希望各位大佬能指出其中的错误。

int n=0；
void TIM1_Init(void)
{
RCC_APB2PeriphclockCmd(RCC_APB2Periph_TIM1,ENABLE);//使能APB2时钟
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;//时钟分频，设置定时器时钟 CK_INT 频率与数字滤波器采样时钟频率分频比
TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up;//向上计数模式
TIM_TimeBaseInitStructure.TIM_Period=100-1;//重装载值
TIM_TimeBaseInitStructure.TIM_Prescaler=7200-1;//预分频
TIM_TimeBaseInitStructure.TIM_RepetitionCounter=0x00;//重复计数器
TIM_TimeBaseInit(TIM1,&TIM_TimeBaseInitStructure);
TIM_CleaRFlag(TIM1,TIM_FLAG_Update);
TIM_ITConfig( TIM1, TIM_IT_Update| TIM_IT_trigger, ENABLE );
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel=TIM1_UP_IRQn;//TIM1中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1; //先占优先级0级
NVIC_InitStructure.NVIC_IRQChannelSubPriority=1; //从优先级3级
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure);
TIM_Cmd(TIM1,ENABLE);//使能定时器
}
void TIM1_UP_IRQHandle(void)
{
if(TIM_GetITStatus(TIM1,TIM_IT_Update))
{
n++;
}
TIM_ClearITPendingBit(TIM1,TIM_IT_Update);//清除中断标志位
}