test.c

/*
*********************************************************************************************************
*                                                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)            */
                       

OS_STK MyTaskStk[TASK_STK_SIZE];
OS_STK YouTaskStk[TASK_STK_SIZE];
INT16S key;
INT8U  x=0,y=0;
INT8U  times=0;
void MyTask(void *data);
void YouTask(void *data);
void  main (void)
{
    char* s_M="M";


    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 */

    

    OSTaskCreate(MyTask, s_M, &MyTaskStk[TASK_STK_SIZE - 1], 0);
    OSStart();                                             /* Start multitasking                       */
}


/*
*********************************************************************************************************
*                                              STARTUP TASK
*********************************************************************************************************
*/
void  MyTask(void *pdata)
{
	char* s_Y="Y";
#if OS_CRITICAL_METHOD == 3                                /* Allocate storage for CPU status register */
    OS_CPU_SR  cpu_sr;
#endif
    


    pdata = pdata;                                         /* Prevent compiler warning                 */

    

    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         */

    OSTaskCreate(&YouTask, s_Y, &YouTaskStk[TASK_STK_SIZE - 1], 2);

    for (;;) 
	{
        		
		if(x>50)
		{
			x=0;
			y+=2;
		}
		times+=1;
		if(times==10)
		{
			OSSchedLock();
		}
		if(times==80)
		{
			OSSchedUnlock();
		}
	   	PC_DispChar(
			x,y,
			*(char*)pdata,
			DISP_BGND_BLACK+DISP_FGND_WHITE
			);
			x+=1;
        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                            */
            }
        }

        
        OSTimeDlyHMSM(0, 0, 3, 0);                         /* Wait one second                          */
    }
}

void  YouTask(void *pdata)
{
	
#if OS_CRITICAL_METHOD == 3                                /* Allocate storage for CPU status register */
    OS_CPU_SR  cpu_sr;
#endif
    


    pdata = pdata;                                         /* Prevent compiler warning                 */

    

    
    for (;;) 
	{
        		
		if(x>50)
		{
			x=0;
			y+=2;
		}
	   	PC_DispChar(
			x,y,
			*(char*)pdata,
			DISP_BGND_BLACK+DISP_FGND_WHITE
			);
			x+=1;
        

        
        OSTimeDlyHMSM(0, 0, 1, 0);                         /* Wait one second                          */
    }
}

运行

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