stm32 hal使用sysTick定时器非阻塞延时方法

简介

一种在stm32 hal库中实现非阻塞任务处理扫描的方式。

stm32f1xx_it.c

/* USER CODE BEGIN 0 */
uint8_t Time_1ms = 0;
uint8_t Time_10ms = 0;/* USER CODE END 0 *//*** @brief This function handles System tick timer.*/
void SysTick_Handler(void)
{/* USER CODE BEGIN SysTick_IRQn 0 */Time_1ms++;Time_10ms++;/* USER CODE END SysTick_IRQn 0 */HAL_IncTick();/* USER CODE BEGIN SysTick_IRQn 1 *//* USER CODE END SysTick_IRQn 1 */
}

main.c

/*
* 变量定义
*/
#define TIMER_FLAG_SET      1U
#define TIMER_FLAG_CLR      0U
#define TASK_TIMER_1MS      1U
#define TASK_TIMER_10MS     10U
//#define TASK_TIMER_30MS     30U/*  扫描函数1ms10ms*/
extern uint8_t Time_1ms;
extern uint8_t Time_10ms;uint8_t Get1msFlag(void)
{uint8_t tempReturn = TIMER_FLAG_CLR;if(Time_1ms >= TASK_TIMER_1MS){Time_1ms = TIMER_FLAG_CLR;tempReturn = TIMER_FLAG_SET;}else{}return tempReturn;
}uint8_t Get10msFlag(void)
{uint8_t tempReturn = TIMER_FLAG_CLR;if(Time_10ms >= TASK_TIMER_10MS){Time_10ms = TIMER_FLAG_CLR;tempReturn = TIMER_FLAG_SET;}else{}return tempReturn;
}int main(void)
{HAL_Init();SystemClock_Config();while(1){if(Get1msFlag() == TIMER_FLAG_SET){//task1();}if(Get10msFlag() == TIMER_FLAG_SET){//task2();}}
}