如:主频8MHz,预分频为128,定时器频率等于8000000 / 128 = 62500 (Hz),周期为16us。 整个代码没有使用库函数,诸如TIM4_SR TIM4_CR1之类的定义在stm8s103k.h,其他的头也可以。 定时器2 (16位计时器) 的简单实用与此类似,但需要注意设置初值的方法,如: void Init_Tim2(void) { TIM2_EGR=0x01; //...
若此时计数资源控制寄存器TIMx_CR1中的UDIS位为0,则产生一个更新事件UEV,且状态寄存器TIMx_SR中的UIF位(更新事件中断标志)被硬件自动置1 若使能了更新中断功能(即中断使能寄存器TIMx_IER中的UIE位设置为1)则在产生更新事件的同时,产生一个更新事件中断UIF,进入中断服务程序 一般在中断程序中把UIF位清零,以此让...
TIM4_SR_bit.UIF = 0; //计数完成1毫秒，清除相应的标志 } TIM4_CR1_bit.CEN = 0; /...
TIM4->SR=0X00; TIM4->DIER|=1<<0;//允许更新 TIM4->DIER|=1<<4;//允许CH4中断 TIM4->EGR|=1<<4; TIM4->CR1|=0x01; //使能计数器 MY_NVIC_Init(1,3,TIM4_IRQn,2);//中断 } void TIM4_IRQHandler(void) { if(TIM4->SR&0X0010) { TIM4->SR&=~(1<<4); } } 0 20...
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45. TIMx->SR = (uint16_t)~TIM_IT_CC3; /* 清除CC3中断标志 */ 46. TIMx->DIER |= TIM_IT_CC3; /* 使能CC3中断 */ 47. } 48. else if (_CC == 4) 49. { 50. s_TIM_CallBack4 = (void (*)(void))_pCallBack;
因为回调函数可能需要重启定时器*/35. s_TIM_CallBack2();36. }37.38. itstatus = TIMx->SR &TIM_IT_CC3;39. itenable = TIMx->DIER &TIM_IT_CC3;40.if((itstatus != (uint16_t)RESET) && (itenable !=(uint16_t)RESET))41. {42. TIMx->SR = (uint16_t)~TIM_IT_CC3;43. TI...
*htim){uint32_t itsource = htim->Instance->DIER;uint32_t itflag = htim->Instance->SR...
Ampomah PB, Cai B, Sukka SR, et al. Macrophages use apoptotic cell-derived methionine and DNMT3A during efferocytosis to promote tissue resolution. Nat Metab. 2022;4:444–57. https://doi.org/10.1038/s42255-022-00551-7. Article PubMed PubMed Central CAS Google Scholar Zhang Y, Wang Y...