实例：在任务中创建一个新的任务 - 曲径通幽论坛

#include "includes.h"

#define TASK_STK_SIZE                 512

OS_STK        DispCharMStk[TASK_STK_SIZE];

OS_STK    DispCharYStk[TASK_STK_SIZE];



    void DispCharM(void *data);

    void DispCharY(void *data);



void main (void)
{

char *s_M = "M";

PC_DispClrScr(DISP_FGND_WHITE + DISP_BGND_BLACK);

OSInit();

PC_DOSSaveReturn();

PC_VectSet(uCOS, OSCtxSw);

OSTaskCreate(DispCharM, s_M, &DispCharMStk[TASK_STK_SIZE - 1], 0);
OSStart();

}

void DispCharM (void *pdata)
{
#if OS_CRITICAL_METHOD == 3                                /* Allocate storage for CPU status register */
OS_CPU_SR cpu_sr;
#endif
INT16S     key;
char *s_Y = "Y";
INT8U x = 0;
INT8U y = 0;

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(DispCharY, s_Y, &DispCharYStk[TASK_STK_SIZE - 1], 1);

for (;;)
   {

PC_DispChar( x, y, *(char *)pdata, DISP_FGND_WHITE);

if( PC_GetKey(&key) == TRUE )
{
   if( key == 0x1B )
   {
    PC_DOSReturn();
    }

}
         x += 2;
       if( x > (DISP_MAX_X - 1) )
     {
    y++;
    x = 0;
     }

   if( y >= (DISP_MAX_Y - 1) )
    {
     y = 0;
     x = 0;
    }

     OSTimeDlyHMSM(0,0,2,0);            //waitt for 1s

   }

}

void DispCharY(void *pdata)
{
#if OS_CRITICAL_METHOD == 3                                /* Allocate storage for CPU status register */
OS_CPU_SR cpu_sr;
#endif
  INT8U x = 1;
  INT8U y = 0;
  INT16S     key;

  pdata = pdata;

for (;;)
   {

OSTimeDlyHMSM(0,0,1,0);        /*此时只有空闲任务和统计任务在运行*/



PC_DispChar( x, y, *(char *)pdata, DISP_FGND_WHITE);

if( PC_GetKey(&key) == TRUE )
{
   if( key == 0x1B )
   {
    PC_DOSReturn();
    }

}

    x += 2;
            if( x > DISP_MAX_X - 1)
     {
    y++;
    x = 1;
     }
    if( y > DISP_MAX_Y - 1)
    {
     y = 0;
     x = 1;
    }
     OSTimeDlyHMSM(0,0,1,0);            //waitt for 1s
}
}