定时器(Timer)最基本的功能就是定时了,比如定时发送USART数据、定时采集AD数据等等。如果把定时器与GPIO结合起来使用的话可以实现非常丰富的功能,可以测量输入信号的脉冲宽度,可以生产输出波形。定时器生产PWM控制电机状态是工业控制普遍方法,这方面知识非常有必要深入了解。 STM32F4xx系列控制器有2个高级控制定时器、10...
Timer_t *constpxTimer = ( Timer_t * )listGET_OWNER_OF_HEAD_ENTRY( pxCurrentTimerList );/* Remove the timer from the list of active timers. A check has already been performed to ensure the list is not empty. */(void)uxListRemove( &( pxTimer->xTimerListItem ) );traceTIMER_EXPIRED...
For instance a master timer can then be used as a prescaler for a slave timer. To connect the TRGO1 output of Timer 1 to Timer 2, Timer 2 must be configured in slave mode using ITR0 as internal trigger. You select this through the TS bits in theTIM2_SMCR register (writing TS...
#include "stm32f10x.h" #include "led.h" #include "delay.h" #include "key.h" #include "usart.h" #include <string.h> #include "timer.h" #include "oled.h" #include "rtc.h" /* 函数功能: 绘制时钟表盘框架 */ void DrawTimeFrame(void) { u8 i; OLED_Circle(32,32,31);//画外圆...
STM32L4定时器(TIMER)介绍
(GPIOA,GPIO_PIN_1);//设置PA1为高电平 // 假设这里1000个delay_us(1); delay_us(1);delay_us(1);delay_us(1);delay_us(1);delay_us(1); delay_us(1);delay_us(1);delay_us(1);delay_us(1);delay_us(1); ,,, ,,, //延迟1000个delay_us(1);的时间 gpio_bit_set(GPIOA,GPIO_PIN...
HAL_Delay(1000); /* USER CODEENDWHILE */ /* USER CODEBEGIN3*/ } /* USER CODEEND3*/ } /* REST OF MAIN.C */ In our code, note that we start the timer with HAL_TIM_Base_Start(&htim16). From there, we can use __HAL_TIM_GET_COUNTER(&htim16) to get th...
C语言的time函数应该如何使用 头文件time.h @函数名称: localtime 函数原型: struct tm *localtime(const time_t *timer) 函数功能: 返回一个以tm结构表达的机器时间信息 函数返回: 以tm结构表达的时间,结构tm定义如下: 2020-02-20 15:37:48
#define INCLUDE_vTaskDelayUntil 1 #define INCLUDE_vTaskDelay 1 #define INCLUDE_eTaskGetState 1 #define INCLUDE_xTimerPendFunctionCall 1 /***/ /* FreeRTOS与中断有关的配置选项 */ /***
l To generate a multi-shot timer with a period of N processor clock cycles, use a RELOADvalue of N-1. For example, if the SysTick interrupt is required every 100 clock pulses, setRELOAD to 99.l To deliver a single SysTick interrupt after a delay of N processor clock cycles, use a...