www.pudn.com > ucosins3c2410.zip > ex1.c

/************************************************************************** 
*                                                                         * 
*   PROJECT     : ARM port for UCOS-II                                    * 
*                                                                         * 
*   MODULE      : EX1.c                                                   * 
*                                                                         * 
*   AUTHOR      : Michael Anburaj                                         * 
*                 URL  : http://geocities.com/michaelanburaj/             * 
*                 EMAIL: michaelanburaj@hotmail.com                       * 
*                                                                         * 
*   PROCESSOR   : Any processor                                           * 
*                                                                         * 
*   IDE         : Any IDE                                                 * 
*                                                                         * 
*   DESCRIPTION :                                                         * 
*   This is a sample code to test UCOS-II.                                * 
*                                                                         * 
**************************************************************************/ 
 
 
#include "includes.h" 
#include "consol.h" 
 
 
/* ********************************************************************* */ 
/* Global definitions */ 
 
 
/* ********************************************************************* */ 
/* File local definitions */ 
 
#define  TASK_STK_SIZE 256                      /* Size of each task's stacks (# of WORDs) */ 
#define  NO_TASKS           10                  /* Number of identical tasks */ 
 
OS_STK   TaskStk[NO_TASKS][TASK_STK_SIZE];      /* Tasks stacks */ 
OS_STK   TaskStartStk[TASK_STK_SIZE]; 
char     TaskData[NO_TASKS];                    /* Parameters to pass to each task */ 
OS_EVENT *RandomSem; 
 
 
/* ********************************************************************* */ 
/* Local functions */ 
 
void Task (void *data) 
{ 
        U8 err; 
 
        while(1) 
        { 
                OSSemPend(RandomSem, 0, &err);  /* Acquire semaphore to perform random numbers */ 
                OSSemPost(RandomSem);           /* Release semaphore */ 
                CONSOL_SendChar(*(char *)data); /* Display the task number on the screen */ 
                OSTimeDly(5);                   /* Delay 5 clock tick */ 
        } 
} 
 
void TaskStart (void *data) 
{ 
        U8 i; 
        char key; 
 
        data = data;                            /* Prevent compiler warning */ 
 
        CONSOL_Printf("uC/OS-II, The Real-Time Kernel ARM Ported version\n"); 
        CONSOL_Printf("Jean J. Labrosse/ (Ported by) Michael Anburaj\n"); 
        CONSOL_Printf("EXAMPLE #1\n"); 
 
        CONSOL_Printf("Determining  CPU's capacity ...\n"); 
 
//        FRMWRK_vStartTicker(OS_TICKS_PER_SEC);  /* The Tick timer is started much earlier */ 
 
        OSStatInit();                           /* Initialize uC/OS-II's statistics */ 
 
        for (i = 0; i < NO_TASKS; i++) 
        {                                       /* Create NO_TASKS identical tasks */ 
                TaskData[i] = '0' + i;          /* Each task will display its own letter */ 
                CONSOL_Printf("#%d",i); 
                OSTaskCreate(Task, (void *)&TaskData[i], (void *)&TaskStk[i][TASK_STK_SIZE - 1], i + 1); 
        } 
 
        CONSOL_Printf("\n# Parameter1: No. Tasks\n"); 
        CONSOL_Printf("# Parameter2: CPU Usage in %%\n"); 
        CONSOL_Printf("# Parameter3: No. Task switches/sec\n"); 
        CONSOL_Printf("<-PRESS 'ESC' TO QUIT->\n"); 
        while(1) 
        { 
                CONSOL_Printf(" %d", OSTaskCtr);    /* Display #tasks running */ 
                CONSOL_Printf(" %d", OSCPUUsage);   /* Display CPU usage in % */ 
                CONSOL_Printf(" %d\n", OSCtxSwCtr); /* Display #context switches per second */ 
                OSCtxSwCtr = 0; 
             
                if(CONSOL_GetChar(&key) == True) 
                {                               /* See if key has been pressed */          
                        if(key == 0x1B)         /* Yes, see if it's the ESCAPE key */ 
                                while(1);       /* Stay here for ever */ 
                } 
 
                OSTimeDlyHMSM(0, 0, 1, 0);      /* Wait one second */ 
        } 
} 
 
 
/* ********************************************************************* */ 
/* Global functions */ 
 
void APP_vMain (void) 
{ 
        OSInit();                               /* Initialize uC/OS-II                                      */ 
        RandomSem = OSSemCreate(1);             /* Random number semaphore                              */ 
        OSTaskCreate(TaskStart, (void *)0, (void *)&TaskStartStk[TASK_STK_SIZE - 1], 0); 
        FRMWRK_vStartTicker(OS_TICKS_PER_SEC);  /* os_cfg.h */ 
        OSStart();                              /* Start multitasking                                       */ 
} 
 
 
/* ********************************************************************* */