STM32 TIM1不能正常工作

takent · 发表于 2015-3-20 14:42:41

将原子的例子的TIM3改为TIM1就不正常了。
void TIM3_Int_Init(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE); //?±??????

//?¨?±?÷TIM3??????
TIM_TimeBaseStructure.TIM_Period = arr; //?è???????????ü??????×°????????×?????×°???????÷????????
TIM_TimeBaseStructure.TIM_Prescaler =psc; //?è??????×÷??TIMx?±?????????????¤·?????
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //?è???±??·???:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM?ò??????????
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); //?ù?????¨????????????TIMx???±???ù??????

TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE ); //???????¨??TIM3????,???í?ü??????

//??????????NVIC?è??
NVIC_InitStructure.NVIC_IRQChannel = TIM1_UP_IRQn; //TIM3????
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //??????????0??
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //????????3??
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ?¨??±?????
NVIC_Init(&NVIC_InitStructure); //??????NVIC?????÷

TIM_Cmd(TIM1, ENABLE); //????TIMx
}
//?¨?±?÷3????·??????ò
void TIM1_UP_IRQHandler(void) //TIM3????
{
if (TIM_GetITStatus(TIM1, TIM_IT_Update) != RESET) //?ì?éTIM3?ü??????·??ú??·?
{
TIM_ClearITPendingBit(TIM1, TIM_IT_Update ); //????TIMx?ü??????±ê??
LED1=!LED1;
}
}