\details Initializes the System Timer and its interrupt, and starts the System Tick Timer. Counter is in free running mode to generate periodic interrupts. \param [in] ticks Number of ticks between two interrupts. \return 0 Function succeeded. \return 1 Function failed. \note When the variabl...
us级延时: voiddelay_us(uint32_tus){uint32_tload_before = SysTick->LOAD;uint32_ttmp;if(us <=0)return; SysTick->CTRL &= ~SysTick_CTRL_TICKINT_Msk;//关闭滴答定时器中断SysTick->LOAD = us*(load_before+1)/1000-1;//设置重装载值SysTick->VAL =0x00;//将定时器归零//这里通过循环判断...
内部触发输入(ITRx,Internal TRigger(x=0,1,2,3))(编码器模式):使用一个定时器作为另一个定时器的预分频器,如可以配置一个定时器Timer1作为另一个定时器Timer2的预分频器。 如上图,TIM1、TIM8、TIM10、TIM11使用的是APB2时钟,而其余定时器使用的是APB1时钟,具体可参考 STM32 - 时钟系统详解 2.2 时基...
使能 SysTick 中断 (HAL_SYSTICK_Config 内部通常会使能) // HAL_NVIC_EnableIRQ(SysTick_IRQn); g_soft_timer_tick_flag = 0; // 清除初始标志位 } SoftTimerID_t SoftTimer_Create(SoftTimerMode_t mode, uint32_t period_ms, SoftTimerCallback_t callback) { if (callback == NULL || period_...
댓글 수: 1 Malitha 2024년 12월 24일 Hi Vikky, Thank you so much for reaching out. In the case of the update event, do I still have to tick the update interrupt in the timer configuration? and also can you elaborate on the sample time please? 댓글을 달려...
外部时钟模式1:外部输入脚(TIx) 外部时钟模式2:外部触发输入(ETR) 内部触发输入(ITRx):使用一个定时器作为另一个定时器的预分频器,如可以配置一个定时器Timer1而作为另一个定时器Timer2的预分频器。 具体如何选择,可参考《STM32数据手册》第14章的时钟选择和从模式控制寄存器(TIMx_SMCR)的描述相关内容。
/* set Priority for Systick Interrupt 这个是与中断相关的,还没学,后面再介绍*/SysTick->VAL=0;/* Load the SysTick Counter Value */SysTick->CTRL=SysTick_CTRL_CLKSOURCE_Msk|SysTick_CTRL_TICKINT_Msk|SysTick_CTRL_ENABLE_Msk;/* Enable SysTick IRQ and SysTick Timer ,开启中断,使能定时器*/...
TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE);/* Enable the TIM1 global Interrupt */ NVIC_...
This is an interrupt handler. The HAL libraries will manage the main interrupt service routine (ISR) when the timer interrupt occurs (feel free to examine it in stm32l4xx_it.c). At some point in that ISR, the code will call HAL_TIM_PeriodElapsedCallback(), which we ...
key_exit.EXTI_Mode = EXTI_Mode_Interrupt; //定义为中断模式 key_exit.EXTI_Trigger = EXTI_...