test.c

这是一个修改ucos的操作系统

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

#include "includes.h"

/*
*********************************************************************************************************
*                                               CONSTANTS
*********************************************************************************************************
*/

#define  TASK_STK_SIZE                 512       /* Size of each task's stacks (# of WORDs)            */
#define  NRM_TASKS                       1
#define  RM_TASKS                        1
#define  N_TASKS                        2       /* Number of identical tasks                          */

/*
*********************************************************************************************************
*                                               VARIABLES
*********************************************************************************************************
*/

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               */
OS_EVENT     *RandomSem;

/*
*********************************************************************************************************
*                                           FUNCTION PROTOTYPES
*********************************************************************************************************
*/

		  void  Task(void *data);                       /* Function prototypes of tasks                  */
		  void  Task1(void *data);                       /* Function prototypes of tasks                  */
		  void  TaskStart(void *data);                  /* Function prototypes of Startup task           */
static  void  TaskStartCreateTasks(void);
static  void  TaskStartDispInit(void);
static  void  TaskStartDisp(void);

/*$PAGE*/
/*
*********************************************************************************************************
*                                                MAIN
*********************************************************************************************************
*/

void  main (void)
{
    INT8U  i;
	 INT16U rmerr;
    PC_DispClrScr(DISP_FGND_WHITE + DISP_BGND_BLACK);      /* Clear the screen                         */

    OSInit();                                              /* Initialize uC/OS-II                      */

    PC_DOSSaveReturn();                                    /* Save environment to return to DOS        */
    PC_VectSet(uCOS, OSCtxSw);                             /* Install uC/OS-II's context switch vector */

    RandomSem   = OSSemCreate(1);                          /* Random number semaphore                  */

	 OSTaskCreate(TaskStart, (void *)0, &TaskStartStk[TASK_STK_SIZE - 1], 0);

	// -------------------------------------------------------
	 // for (i = RM_TASKS; i < N_TASKS; i++) {                        /* Create N_TASKS identical tasks           */
	  //	  TaskData[i] = 'A' ;                             /* Each task will display its own letter    */
	 //	  OSTaskCreate(Task, (void *)&TaskData[i], &TaskStk[i][TASK_STK_SIZE - 1], i + 1);
  //	}
	  for (i = 0; i < RM_TASKS; i++) {                        /* Create N_TASKS identical tasks           */
		  TaskData[i] = 'B' ;                             /* Each task will display its own letter    */
	 //	  OSTaskCreate(Task1, (void *)&TaskData[i], &TaskStk[i][TASK_STK_SIZE - 1], i + 1);
		RMTaskCreate (Task1, (void *)&TaskData[i], &TaskStk[i][TASK_STK_SIZE - 1], 0, 1, 2, -1);
	 }
	// for (i = 0; i < RM_TASKS; i++) {                        /* Create N_TASKS identical tasks           */
	 //	  TaskData[i] = 'B' ;                             /* Each task will display its own letter    */
		  //OSTaskCreate(Task, (void *)&TaskData[i], &TaskStk[i][TASK_STK_SIZE - 1], i + 1);
	 //		rmerr = RMTaskCreate (Task1, (void *)&TaskData[i], &TaskStk[i][TASK_STK_SIZE - 1], 0, 1, 2, -1);
	//}
	 //--------------------------------------------------------------------

	 OSStart();                                             /* Start multitasking                       */
}


/*
*********************************************************************************************************
*                                              STARTUP TASK
*********************************************************************************************************
*/
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;


	 pdata = pdata;                                         /* Prevent compiler warning                 */

	 TaskStartDispInit();                                   /* Initialize the display                   */

	 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();

	 OSStatInit();                                          /* Initialize uC/OS-II's statistics         */

	 //TaskStartCreateTasks();                                /* Create all the application tasks         */


	 //---------------------





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


		  if (PC_GetKey(&key) == TRUE) {                     /* See if key has been pressed              */
				if (key == 0x1B) {                             /* Yes, see if it's the ESCAPE key          */
					 PC_DOSReturn();                            /* Return to DOS                            */
				}
		  }

		  OSCtxSwCtr = 0;                                    /* Clear context switch counter             */
		  OSTimeDlyHMSM(0, 0, 1, 0);                         /* Wait one second                          */
	 }
}

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