• uC/OS-II测试(TEST)块


    /*
    *********************************************************************************************************
    *                                                uC/OS-II
    *                                          The Real-Time Kernel
    *
    *                           (c) Copyright 1992-2002, Jean J. Labrosse, Weston, FL
    *                                           All Rights Reserved
    *
    *                                               EXAMPLE #1
    *********************************************************************************************************
    */
    //主函数
    #include "includes.h"

    /*
    *********************************************************************************************************
    *                                               CONSTANTS
    *********************************************************************************************************
    */
    //定义堆栈大小
    #define  TASK_STK_SIZE                 512       /* Size of each task's stacks (# of WORDs)            */
    //定义任务数
    #define  N_TASKS                        10       /* Number of identical tasks                          */

    /*
    *********************************************************************************************************
    *                                               VARIABLES
    *********************************************************************************************************
    */
    //定义任务堆栈数据
    OS_STK        TaskStk[N_TASKS][TASK_STK_SIZE];        /* Tasks stacks                                  */
    OS_STK        TaskStartStk[TASK_STK_SIZE];
    char          TaskData[N_TASKS];                      /* Parameters to pass to each task               */
    //定义事件变量
    OS_EVENT     *RandomSem;

    /*
    *********************************************************************************************************
    *                                           FUNCTION PROTOTYPES
    *********************************************************************************************************
    */
    //声明各种函数函数
            void  Task(void *data);                       /* Function prototypes of tasks                  */
    //一定要执行的函数  
            void  TaskStart(void *data);                  /* Function prototypes of Startup task           */
    static  void  TaskStartCreateTasks(void);
    static  void  TaskStartDispInit(void);
    static  void  TaskStartDisp(void);

    /*$PAGE*/
    /*
    *********************************************************************************************************
    *                                                MAIN
    *********************************************************************************************************
    */
    //主函数
    void  main (void)
    {
        //定义清屏函数
        PC_DispClrScr(DISP_FGND_WHITE + DISP_BGND_BLACK);      /* Clear the screen                         */
        //初始化uC/OS-II的各种变量
        OSInit();                                              /* Initialize uC/OS-II                      */
        //保存DOS环境
        PC_DOSSaveReturn();                                    /* Save environment to return to DOS        */
        //安装uC/OS-II任务切断中断向量,osTime放在优先级任务之前-Install uC/OS-II's clock tick ISR
        PC_VectSet(uCOS, OSCtxSw);                             /* Install uC/OS-II's context switch vector */
        //创建一个随机信号量
        RandomSem   = OSSemCreate(1);                          /* Random number semaphore                  */
        //创建任务
        OSTaskCreate(TaskStart, (void *)0, &TaskStartStk[TASK_STK_SIZE - 1], 0);
        //启动多任务管理
        OSStart();                                             /* Start multitasking                       */
    }


    /*
    *********************************************************************************************************
    *                                              STARTUP TASK
    *********************************************************************************************************
    */
    //开始任务
    void  TaskStart (void *pdata)
    {
    #if OS_CRITICAL_METHOD == 3                                /* Allocate storage for CPU status register */
        OS_CPU_SR  cpu_sr;
    #endif
        char       s[100];
        INT16S     key;
        
        //目的是防止编译器警告
        pdata = pdata;                                         /* Prevent compiler warning                 */
        //初始化dos
        TaskStartDispInit();                                   /* Initialize the display                   */
        //进入临界段
        OS_ENTER_CRITICAL();
        PC_VectSet(0x08, OSTickISR);                           /* Install uC/OS-II's clock tick ISR        */
        PC_SetTickRate(OS_TICKS_PER_SEC);                      /* Reprogram tick rate                      */
        OS_EXIT_CRITICAL();
        //初始化统计任务
        OSStatInit();                                          /* Initialize uC/OS-II's statistics         */
        //创建所有的任务
        TaskStartCreateTasks();                                /* Create all the application tasks         */

        for (;;) {
            TaskStartDisp();                                  /* Update the display                       */

            //当按下esc键时 触发此方法
            if (PC_GetKey(&key) == TRUE) {                     /* See if key has been pressed              */
                if (key == 0x1B) {                             /* Yes, see if it's the ESCAPE key          */
                    //返回DOS    
                    PC_DOSReturn();                            /* Return to DOS                            */
                }
            }
            //清除任务切换次数
            OSCtxSwCtr = 0;                                    /* Clear context switch counter             */
            //等待1秒
            OSTimeDlyHMSM(0, 0, 1, 0);                         /* Wait one second                          */
        }
    }

    /*$PAGE*/
    /*
    *********************************************************************************************************
    *                                        INITIALIZE THE DISPLAY
    *********************************************************************************************************
    */

    static  void  TaskStartDispInit (void)
    {
    /*                                1111111111222222222233333333334444444444555555555566666666667777777777 */
    /*                      01234567890123456789012345678901234567890123456789012345678901234567890123456789 */
        PC_DispStr( 0,  0, "                         uC/OS-II, The Real-Time Kernel                         ", DISP_FGND_WHITE + DISP_BGND_RED + DISP_BLINK);
        PC_DispStr( 0,  1, "                                Jean J. Labrosse                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0,  2, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0,  3, "                                    EXAMPLE #1                                  ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0,  4, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0,  5, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0,  6, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0,  7, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0,  8, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0,  9, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 10, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 11, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 12, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 13, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 14, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 15, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 16, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 17, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 18, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 19, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 20, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 21, "                                                                                ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 22, "#Tasks          :        CPU Usage:     %                                       ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 23, "#Task switch/sec:                                                               ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
        PC_DispStr( 0, 24, "                            <-PRESS 'ESC' TO QUIT->                             ", DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY + DISP_BLINK);
    /*                                1111111111222222222233333333334444444444555555555566666666667777777777 */
    /*                      01234567890123456789012345678901234567890123456789012345678901234567890123456789 */
    }

    /*$PAGE*/
    /*
    *********************************************************************************************************
    *                                           UPDATE THE DISPLAY
    *********************************************************************************************************
    */

    static  void  TaskStartDisp (void)
    {
        char   s[80];


        sprintf(s, "%5d", OSTaskCtr);                                  /* Display #tasks running               */
        PC_DispStr(18, 22, s, DISP_FGND_YELLOW + DISP_BGND_BLUE);

    #if OS_TASK_STAT_EN > 0
        sprintf(s, "%3d", OSCPUUsage);                                 /* Display CPU usage in %               */
        PC_DispStr(36, 22, s, DISP_FGND_YELLOW + DISP_BGND_BLUE);
    #endif

        sprintf(s, "%5d", OSCtxSwCtr);                                 /* Display #context switches per second */
        PC_DispStr(18, 23, s, DISP_FGND_YELLOW + DISP_BGND_BLUE);

        sprintf(s, "V%1d.%02d", OSVersion() / 100, OSVersion() % 100); /* Display uC/OS-II's version number    */
        PC_DispStr(75, 24, s, DISP_FGND_YELLOW + DISP_BGND_BLUE);

        switch (_8087) {                                               /* Display whether FPU present          */
            case 0:
                 PC_DispStr(71, 22, " NO  FPU ", DISP_FGND_YELLOW + DISP_BGND_BLUE);
                 break;

            case 1:
                 PC_DispStr(71, 22, " 8087 FPU", DISP_FGND_YELLOW + DISP_BGND_BLUE);
                 break;

            case 2:
                 PC_DispStr(71, 22, "80287 FPU", DISP_FGND_YELLOW + DISP_BGND_BLUE);
                 break;

            case 3:
                 PC_DispStr(71, 22, "80387 FPU", DISP_FGND_YELLOW + DISP_BGND_BLUE);
                 break;
        }
    }

    /*$PAGE*/
    /*
    *********************************************************************************************************
    *                                             CREATE TASKS
    *********************************************************************************************************
    */
    //创建系统任务
    static  void  TaskStartCreateTasks (void)
    {
        INT8U  i;


        for (i = 0; i < N_TASKS; i++) {                        /* Create N_TASKS identical tasks           */
            TaskData[i] = '0' + i;                             /* Each task will display its own letter    */
            OSTaskCreate(Task, (void *)&TaskData[i], &TaskStk[i][TASK_STK_SIZE - 1], i + 1);
        }
    }

    /*
    *********************************************************************************************************
    *                                                  TASKS
    *********************************************************************************************************
    */
    //实现任务
    void  Task (void *pdata)
    {
        INT8U  x;
        INT8U  y;
        INT8U  err;
        

        for (;;) {
            //申请一个信号量
            OSSemPend(RandomSem, 0, &err);           /* Acquire semaphore to perform random numbers        */
            x = random(80);                          /* Find X position where task number will appear      */
            y = random(16);                          /* Find Y position where task number will appear      */
            //发出一个信号量
            OSSemPost(RandomSem);                    /* Release semaphore                                  */
            //打印一个字符                                         /* Display the task number on the screen              */
            PC_DispChar(x, y + 5, *(char *)pdata, DISP_FGND_BLACK + DISP_BGND_LIGHT_GRAY);
            //延迟1个节拍
            OSTimeDly(1);                            /* Delay 1 clock tick                                 */
        }
    }

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  • 原文地址:https://www.cnblogs.com/wxb20/p/6230852.html
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