tasks.c

一个测试端口测试程序

/**********************************************************************************************
  file   :   Tasks.c
  Author :   Farid LEZIAR   ( [e-mail] )
  Date   :   July 2002

    This file contains Tasks's implementations of the Test Port

**********************************************************************************************/
#include "librtos32\includes.h"
#include "Tasks.h"



/*********************************************************************************************
  void Task1();
    Initializes the timer, starts statistic task and creates other tasks
    This Task prints message every second and stops after 5 seconds.
*********************************************************************************************/
void Task1 (void *pdata)
{
  INT8U   err;
  INT32U  cpt = 0;
  
  OSNiosStartTicks((void*)ND_TIMER);                    /* starts the timer */

#if ND_USE_UCOSVIEW == 1
  OSStatInit();                                         /* OSCPUUsage = % of cpu usage */
  OSView_Init();                                        /* uC/OS-View */
#endif

  if (OSNiosInstallUserISR(20, UserTimerISR))
  {
      ((np_timer*)na_timer_for_test)->np_timerperiodl = 0xFFFF & (nasys_clock_freq/1);
      ((np_timer*)na_timer_for_test)->np_timerperiodh = 0xFFFF & ((nasys_clock_freq/1)>>16);
      ((np_timer*)na_timer_for_test)->np_timercontrol = np_timercontrol_cont_mask | np_timercontrol_start_mask | np_timercontrol_ito_mask;
  }
  
  /* Creates other Tasks */
  OSTaskCreateExt(Task2, (void*)0, &Task2Stk[TASK_STACKSIZE-1], 20,
                  20, &Task2Stk[0], TASK_STACKSIZE, (void*)0,
                  OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);
  OSTaskNameSet(20, "Task2", &err);
  
  OSTaskCreateExt(Task3, (void*)0, &Task3Stk[TASK_STACKSIZE-1], 30,
                  30, &Task3Stk[0], TASK_STACKSIZE, (void*)0,
                  OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);
  OSTaskNameSet(30, "Task3", &err);


  while(1)
  {
      printf("TASK 1 : cpt = %d\n", cpt++);
      OSTimeDlyHMSM(0,0,1,0);                           /* Waits 1 second */
      if (cpt > 500) OSTaskDel(OS_PRIO_SELF);             /* terminates current task */
  }

}




/*********************************************************************************************
  void Task2();
    This Task prints message every 2 seconds and never stops.
*********************************************************************************************/
void Task2 (void *pdata)
{
  INT32U  cpt = 0;
  
  while(1)
  {
      printf("TASK 2 : cpt = %d\n", cpt++);
      OSTimeDlyHMSM(0,0,2,0);
  }
}





/*********************************************************************************************
  void Task3();
    This Task prints message every 3 seconds and never stops.
*********************************************************************************************/
void Task3 (void *pdata)
{
  INT32U  cpt = 0;

  while(1)
  {
  	  for (cpt=0;cpt<10;cpt++)
        printf("TASK 3 : cpt = %d\n", cpt);
      OSTimeDlyHMSM(0,0,3,0);
  }
}



/*********************************************************************************************
  void UserTimerISR();
    This functions is C User ISR.
*********************************************************************************************/
void UserTimerISR()
{
  ((np_timer*)na_timer_for_test)->np_timerstatus = 0;   /* clears the interrupt */
  printf("UserTimerISR() : irq = %d\n", getIPRI());
}