STM8L 使用外部时钟源模式2计数功能时 (ETR),如何同时...
//TIM1 ETR触发副程式(PD3)TIM1->IER |= 0x40; //Enable触发中断
TIM1->ETR |= 0x00; //ETR触发极性 ETP=1
TIM1->ETR |= 0x30; //ETR预分频参数
TIM1->ETR |= 0x03; //外部触发滤波参数
TIM1->ETR |= 0x40; //使能ECE位
TIM1->IER |= 0x40; //Enable触发中断
TIM1->CR1 |= TIM1_CR1_CEN ; //enable TIM1
设定值如上,但无法进入中断副程式,请教原因是?
i = TIM1->SR1;
TIM1->SR1 &=0xBF;
i = TIM1->SR1;
tmpcntrh = TIM1->CNTRH;
tmpcntrl = TIM1->CNTRL;
tmpcntr= (uint16_t)(tmpcntrl);
tmpcntr |= (uint16_t)((uint16_t)tmpcntrh << 8);
Show_String1(tmpcntr,2,40);
有另外写一个副程式,可以确认ETR有正确收到计数值,并改变CONTER值,但无法进入中断副程式
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