3.2 systick 定时器中断 1volatileuint32_ttick_counter =0;23voidsys_tick_handler(void)4{5tick_counter++;6} 这里在中断函数里进行计数; 3.3 使用 一般这个systick定时器在cortex-m芯片中都存在,因此比较通用,可以用作RTOS的时基或用作延时功能,比如根据上面的tick_counter计数可以实现类似Arduino中的millis方式...
1#definexPortSysTickHandler sys_tick_handler 就可以通过systick中断提供FreeRTOS时钟; LED任务函数 1staticvoidled1_task(void *args)2{3rcc_periph_clock_enable(RCC_GPIOC);4gpio_mode_setup(GPIOC,GPIO_MODE_OUTPUT,GPIO_PUPD_NONE,GPIO12);56while(1)7{8gpio_toggle(GPIOC,GPIO12);9vTaskDelay(pdMS...
// stm32 systick 1ms 中断voidSysTick_Handler(void){BSP_Time_IncTick();// 时间片轮询时基} 2、创建轮询任务 intmain(void){BSP_Time_Init();// 时间片轮询初始化while(1){if(BSP_Time_CheckTick()==1){// 500ms轮询任务,绿色led闪烁if(BSP_Time_CheckSlice(500)==1){BSP_LED_Toggle(GREEN);...
继续执行HAL_ResumeTick()语句回复系统滴答定时器。 */ static void EnterSleepMode(PowerMode mode) { /* Suspend Tick increment to prevent wakeup by Systick interrupt. Otherwise the Systick interrupt will wake up the device within 1ms (HAL time base) */ HAL_SuspendTick(); /* Request to enter...
肏AL_SuspendTick()函数挂起系统滴答定时器,否则将会被系统滴答定时器(SysTick )中断在1ms内唤醒。程序运行到HAL_PWR_EnterSLEEPMode ()函数时,系统进入睡眠模式,程序停止运行。当按下WAKEUP按键时,触发外部中断0 ,此时系统被唤醒。继续执行HAL_ResumeTick()语句回复系统滴答定时器。
下面是配置代码 #if ADC_CONFIG_ENABLE #define ADC_CHANNEL_COUN 1 #define ADC_ADD_COUN 1 #...
Error_Handler(); } /** Initializes the CPU, AHB and APB buses clocks */ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK |RCC_CLOCKTYPE_PCLK1; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_Clk...
Error_Handler(); } /** Initializes the CPU, AHB and APB buses clocks */ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK |RCC_CLOCKTYPE_PCLK1; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_Clk...
74 00000038 00000000 DCD PendSV_Handler ; PendSV Handler 75 0000003C 00000000 DCD SysTick_Handler ; SysTick Handler 76 00000040 77 00000040 ; External Interrupts 78 00000040 00000000 DCD WWDG_IRQHandler ; Window Watchdog 79 00000044 00000000 DCD 0 ; Reserved 80 00000048 00000000 DCD...
This file contains the exceptions handler and peripherals interrupt service routine, and calls HAL_IncTick() at regular time intervals to increment a local variable (declared in stm32g0xx_hal.c) stm32g0xx_it.c/.h used as HAL timebase. By default, this function is called each 1ms in Sys...