输入捕获TIM1的CH1（pa8）

流浪者转世

void TIM1_Cap_Init(u16 arr,u16 psc)
{
RCC->APB2ENR |=1<<11;//time1???±??
RCC->APB2ENR |=1<<2;//PA???±??

GPIOA->CRH   |=0XFFFFFFF0;
GPIOA->CRH   |=0x00000008;
GPIOA->ODR   |=1<<8;

TIM1 ->SC   |=psc;
TIM1 ->ARR   |=arr;

TIM1 ->CCMR1 |=1<<0;
TIM1 ->CCMR1 |=1<<4;
TIM1 ->CCMR1 |=1<<2;

TIM1 ->CCER  |=1<<1;
TIM1 ->CCER  |=1<<0;

TIM1 ->DIER  |=1<<1;
TIM1 ->DIER  |=1<<0;
TIM1 ->CR1   |=1<<0;
MY_NVIC_Init(2,0,TIM5_IRQn,2);//????2??×???????0??×é2   
}

u8  IC1Sta;
u16 count;
void TIM1_IRQHandler(void)
{
if(IC1Sta&0x80)
{
if((TIM1->SR)&0X01)//????
{
if(IC1Sta&0x40)
{
if((IC1Sta&0x3F)==0x3f)
{
IC1Sta |= 0x80;//±ê?????????????????????????í
count  |= 0XFFFF;
}
else
{
IC1Sta++;
printf("nishi shai\n");
}
}
}
}
if(IC1Sta&0x02)
{
if(IC1Sta&0x40)
{
IC1Sta |= 0x80;//±ê?????????????????????????í
IC1Sta = TIM1->CCR1;
TIM1->CCER |= 1<<1;//CC1P=1 ?è??????????????
}
else 
{
IC1Sta=0;//????
count =0;
IC1Sta |=0x40;//±ê????????????????
TIM1->CNT=0; //?????÷????
TIM1->CCER|=1<<1; //CC1P=1 ?è??????????????
}

}
}

为啥IO端口啥也没有，大家来看看吧！！到底是哪的问题？？

lycreturn

回复【3楼】流浪者转世:
---------------------------------
中断向量用 TIM1_CC_IRQn    中断函数 TIM1_CC_IRQHandler
其他配置和通用定时器都差不多，对照着改就行了

lycreturn

中断配置错了  应该是TIM1_CC_IRQn 不是定时器5的   中断函数也应该是 TIM1_CC_IRQHandler

流浪者转世

回复【2楼】lycreturn:
---------------------------------
我是模仿TIM5配置的，那tim1怎么配置？？？谢啦!!