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README
Apache-2.0

TMT任务管理框架

一个采用面向对象思想封装的适用于裸机的前后台系统框架,本质是时间片运行机制,类似软件定时器。支持市面上所有常见的MCU,移植非常简单。

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详细描述

TMT任务管理框架的本质是时间片任务管理方法。该框架优化了这种分配时间任务的方式,更加灵活易用。

裸机开发中,我们常用的一种程序框架是前后台系统,即中断服务函数为前台,main函数内的无限循环体为后台。变量在前台计数,到达设定的计数值(即一定时间)后,置出相应的标志位,然后在后台判断,并执行相应的代码。

传统的前后台系统,虽然是一个比较合理的框架,但是有一些缺点,非常令人头疼。比如变量的传递,尤其设置标志位,一般都是全局变量,且跨文件调用,当分配的全局变量过多时,会降低代码的阅读性和维护性,大大影响我们的开发效率。

本框架在前后台系统的基础上,进行了优化,通过结构体封装+中断回调函数的方式(面向对象的封装思想),基本上避免了以上所述的问题,使我们整个的程序框架更加稳定简洁。

要说明的是,本模块根据时间片来管理任务的,无优先级。任务的执行顺序与分配的时间有关,时间越小,越先执行。如果两个任务被分配的时间相同,先分配的任务,先执行。

约束

  • TMT调度的时间,受两个方面影响:一个是本身设置的调度时间(单位ticks),一个是所有任务运行的总时间。
  • 一个任务只有等前面的任务运行完毕,才会得到运行。
  • 在任务中调用延时函数,会阻塞所有任务,直到退出延时。

API手册

只有七个API函数,可以根据需要,搭配使用,非常简单。

函数名 描述
TMT.run() TMT运行
TMT.Tick() TMT节拍
TMT.Create(void (*taskFunc) (void),uint16_t triTime) 创建任务
TMT.Delete(void (*taskFunc) (void)) 删除任务
TMT.TimeCtrl(void (*taskFunc) (void),uint16_t triTime) 任务时间控制
TMT.runCtrl(void (*taskFunc) (void),PRO_STATE state) 任务状态控制
void TMT_Init() TMT初始化

代码演示

  1. 在TMT.h文件里,配置相关参数 ;
/**
 * @brief     硬件平台相关的头文件,提供硬件运行的基本环境,一般是寄存器头文件。
 * @details   The header files related to the hardware platform provide 
 *            the basic environment for hardware operation, generally 
 *            register header files.
**/
#include 	  "STC8Ax_REG.h" 


/**
 * @brief     进入TMT临界区宏函数,需要关闭相关定时器的中断。
 * @details   Enter the TMT critical section macro function.
 *            It is necessary to turn off the interrupt of the related timer.
 * @note      需要根据硬件平台,移植合适的关定时器中断代码。
 *            It is necessary to transplant the appropriate off-timer 
 *            interrupt code according to the hardware platform.
**/
#define       ENTER_TMT_CRI_AREA()    do{ ET0 = 0; }while(0)


/**
 * @brief     退出TMT临界区宏函数,需要打开相关定时器的中断。
 * @details   Enter the TMT critical section macro function.
 *            It is necessary to turn on the interrupt of the related timer.
 * @note      需要根据硬件平台,移植合适的开定时器中断代码。
 *            It is necessary to transplant the appropriate on-timer 
 *            interrupt code according to the hardware platform.
**/
#define       EXTI_TMT_CRI_AREA()     do{ ET0 = 1; }while(0)


/**
 * @brief     TMT的变量类型重定义,如果有冲突,请配置为0。
 * @details   The variable type of TMT is redefined. 
 *            If there is a conflict, please configure it to 0..
**/
#if 		  (0)

	typedef  unsigned char   uint8_t; /*!<  8 bits */
	typedef  unsigned int   uint16_t; /*!< 16 bits */

#endif


/**
 * @brief     任务数量控制宏,用来确定TMT需要调度的最大任务数量。
 * @details   The number of tasks control macro is used to 
 *            determine the maximum number of tasks that TMT
 *            needs to schedule.
**/
#define 	  TMT_TASK_NUM  	 (8)

  1. 在定时器中断服务函数里,调用任务时间处理回调函数 ;
#include "TMT.h"  //调用头文件;

void TIMER0_ISRQ_Handler(void) //定时器0中断服务函数
{
    /*
    调用TMT节拍函数,为TMT提供心跳节拍,
    节拍时间根据你设置的定时器中断时间来决定
    */
    TMT.Tick(); 
}
  1. 在自己编写的C文件里,编写若干个任务。
void App_lamp1(void) //任务必须是void型 无形参
{
    GPIO_TOGGLE_PIN(GPIO_P1,Pin_0);
}

void App_lam2p(void) //任务必须是void型 无形参
{
    GPIO_TOGGLE_PIN(GPIO_P1,Pin_1);
}
  1. 在main里面调用进程初始化,同时在循环体里面调用TMT运行函数。

int main(void)  //main 函数
{
    extern void App_lamp1(void);
    extern void App_lamp2(void);

    STC8x_System_Init(); // 调用MCU外设初始化函数  主要初始化定时器,这里给定时器1ms中断一次 
    
    TMT_Init();  //TMT初始化函数。

    TMT.Create(App_lamp1,500); /* 创建一个任务,500tick执行一次 */
    TMT.Create(App_lamp2,500); /* 创建一个任务,500tick执行一次 */
    
    for(;;)  //无限循环体
    {
        TMT.Run();// 调用任务进程处理回调函数 
    }
}

运行仿真结果如下:

参与贡献

  1. 星标本仓库
  2. Fork 本仓库
  3. 新建 Feat_xxx 分支
  4. 提交代码
  5. 新建 Pull Request
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一个面向对象封装的适用于裸机的前后台系统框架,本质是时间片运行机制,类似软件定时器。 expand collapse
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