RT-Thread Shell#

RT-Thread定时器#

软定时器：在系统线程timer中执行，通过shell可以查看到系统默认开启了一个timer进程
硬定时器：回调函数在中断上下文中执行

1. 定时器的创建过程#

1
/*
2
 * Copyright (c) 2006-2024, RT-Thread Development Team
3
 *
4
 * SPDX-License-Identifier: Apache-2.0
5
 *
6
 * Change Logs:
7
 * Date           Author       Notes
8
 * 2024-10-17     RT-Thread    first version
9
 */
10

11
#include <rtthread.h>
12

13
static rt_thread_t timer1; //定义定时器
14
static rt_thread_t timer2;
15

16
//定义超时回调函数
17
static void timerout1(void *paramer){
18
    rt_kprintf("one_shot timeout");
19
}
20

21
static void timerout2(void *paramer){
22
    rt_kprintf("periodic timeout");
23
}
24

25

26

27
int main(void)
28
{
29
    /*创建周期定时器*/
30
    timer1 = rt_timer_create("timer1",  //定时器名称
31
                              timerout1, //超时函数
32
                              RT_NULL,  //无参数
33
                              100,      //时间...
34
                              RT_TIMER_FLAG_PERIODIC);  //周期性
35

36
    //启动定时器
37
    if(timer1 != RT_NULL) rt_timer_start(timer1);
38

39
    /*创建单次定时器*/
40
    timer2 = rt_timer_create("timer2",  //定时器名称
41
                              timerout2, //超时函数
42
                              RT_NULL,  //无参数
43
                              100,      //时间...
44
                              RT_TIMER_FLAG_ONE_SHOT);  //单次
45

46
    if(timer2 != RT_NULL) rt_timer_start(timer2);
47

48
    return 0;
49
}