os_core.c

dsp常用例程UCOS程序源代码 基于TIDSP

*/
#if ((OS_Q_EN > 0) && (OS_MAX_QS > 0)) || (OS_MBOX_EN > 0) || (OS_SEM_EN > 0) || (OS_MUTEX_EN > 0)
void  OS_EventWaitListInit (OS_EVENT *pevent)
{
    INT8U  *ptbl;


    pevent->OSEventGrp = 0x00;                   /* No task waiting on event                           */
    ptbl               = &pevent->OSEventTbl[0];

#if OS_EVENT_TBL_SIZE > 0
    *ptbl++            = 0x00;
#endif

#if OS_EVENT_TBL_SIZE > 1
    *ptbl++            = 0x00;
#endif

#if OS_EVENT_TBL_SIZE > 2
    *ptbl++            = 0x00;
#endif

#if OS_EVENT_TBL_SIZE > 3
    *ptbl++            = 0x00;
#endif

#if OS_EVENT_TBL_SIZE > 4
    *ptbl++            = 0x00;
#endif

#if OS_EVENT_TBL_SIZE > 5
    *ptbl++            = 0x00;
#endif

#if OS_EVENT_TBL_SIZE > 6
    *ptbl++            = 0x00;
#endif

#if OS_EVENT_TBL_SIZE > 7
    *ptbl              = 0x00;
#endif
}
#endif
/*$PAGE*/
/*
*********************************************************************************************************
*                                             INITIALIZATION
*                           INITIALIZE THE FREE LIST OF EVENT CONTROL BLOCKS
*
* Description: This function is called by OSInit() to initialize the free list of event control blocks.
*
* Arguments  : none
*
* Returns    : none
*********************************************************************************************************
*/

static  void  OS_InitEventList (void)
{
#if (OS_EVENT_EN > 0) && (OS_MAX_EVENTS > 0)
#if (OS_MAX_EVENTS > 1)
    INT16U     i;
    OS_EVENT  *pevent1;
    OS_EVENT  *pevent2;


    pevent1 = &OSEventTbl[0];
    pevent2 = &OSEventTbl[1];
    for (i = 0; i < (OS_MAX_EVENTS - 1); i++) {                  /* Init. list of free EVENT control blocks  */
        pevent1->OSEventType = OS_EVENT_TYPE_UNUSED;
        pevent1->OSEventPtr  = pevent2;
        pevent1++;
        pevent2++;
    }
    pevent1->OSEventType = OS_EVENT_TYPE_UNUSED;
    pevent1->OSEventPtr  = (OS_EVENT *)0;
    OSEventFreeList      = &OSEventTbl[0];
#else
    OSEventFreeList              = &OSEventTbl[0];               /* Only have ONE event control block        */
    OSEventFreeList->OSEventType = OS_EVENT_TYPE_UNUSED;
    OSEventFreeList->OSEventPtr  = (OS_EVENT *)0;
#endif
#endif
}
/*$PAGE*/
/*
*********************************************************************************************************
*                                             INITIALIZATION
*                                    INITIALIZE MISCELLANEOUS VARIABLES
*
* Description: This function is called by OSInit() to initialize miscellaneous variables.
*
* Arguments  : none
*
* Returns    : none
*********************************************************************************************************
*/

static  void  OS_InitMisc (void)
{
#if OS_TIME_GET_SET_EN > 0   
    OSTime        = 0L;                                          /* Clear the 32-bit system clock            */
#endif

    OSIntNesting  = 0;                                           /* Clear the interrupt nesting counter      */
    OSLockNesting = 0;                                           /* Clear the scheduling lock counter        */

    OSTaskCtr     = 0;                                           /* Clear the number of tasks                */

    OSRunning     = FALSE;                                       /* Indicate that multitasking not started   */
    
    OSCtxSwCtr    = 0;                                           /* Clear the context switch counter         */
    OSIdleCtr     = 0L;                                          /* Clear the 32-bit idle counter            */

#if (OS_TASK_STAT_EN > 0) && (OS_TASK_CREATE_EXT_EN > 0)
    OSIdleCtrRun  = 0L;
    OSIdleCtrMax  = 0L;
    OSStatRdy     = FALSE;                                       /* Statistic task is not ready              */
#endif
}
/*$PAGE*/
/*
*********************************************************************************************************
*                                             INITIALIZATION
*                                       INITIALIZE THE READY LIST
*
* Description: This function is called by OSInit() to initialize the Ready List.
*
* Arguments  : none
*
* Returns    : none
*********************************************************************************************************
*/

static  void  OS_InitRdyList (void)
{
    INT16U   i;
    INT8U   *prdytbl;


    OSRdyGrp      = 0x00;                                        /* Clear the ready list                     */
    prdytbl       = &OSRdyTbl[0];
    for (i = 0; i < OS_RDY_TBL_SIZE; i++) {
        *prdytbl++ = 0x00;
    }

    OSPrioCur     = 0;
    OSPrioHighRdy = 0;

    OSTCBHighRdy  = (OS_TCB *)0;                                 
    OSTCBCur      = (OS_TCB *)0;
}

/*$PAGE*/
/*
*********************************************************************************************************
*                                             INITIALIZATION
*                                         CREATING THE IDLE TASK
*
* Description: This function creates the Idle Task.
*
* Arguments  : none
*
* Returns    : none
*********************************************************************************************************
*/

static  void  OS_InitTaskIdle (void)
{
#if OS_TASK_CREATE_EXT_EN > 0
    #if OS_STK_GROWTH == 1
    (void)OSTaskCreateExt(OS_TaskIdle,
                          (void *)0,                                 /* No arguments passed to OS_TaskIdle() */
                          &OSTaskIdleStk[OS_TASK_IDLE_STK_SIZE - 1], /* Set Top-Of-Stack                     */
                          OS_IDLE_PRIO,                              /* Lowest priority level                */
                          OS_TASK_IDLE_ID,
                          &OSTaskIdleStk[0],                         /* Set Bottom-Of-Stack                  */
                          OS_TASK_IDLE_STK_SIZE,
                          (void *)0,                                 /* No TCB extension                     */
                          OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);/* Enable stack checking + clear stack  */
    #else
    (void)OSTaskCreateExt(OS_TaskIdle,
                          (void *)0,                                 /* No arguments passed to OS_TaskIdle() */
                          &OSTaskIdleStk[0],                         /* Set Top-Of-Stack                     */
                          OS_IDLE_PRIO,                              /* Lowest priority level                */
                          OS_TASK_IDLE_ID,
                          &OSTaskIdleStk[OS_TASK_IDLE_STK_SIZE - 1], /* Set Bottom-Of-Stack                  */
                          OS_TASK_IDLE_STK_SIZE,
                          (void *)0,                                 /* No TCB extension                     */
                          OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);/* Enable stack checking + clear stack  */
    #endif
#else
    #if OS_STK_GROWTH == 1
    (void)OSTaskCreate(OS_TaskIdle,
                       (void *)0,
                       &OSTaskIdleStk[OS_TASK_IDLE_STK_SIZE - 1],
                       OS_IDLE_PRIO);
    #else
    (void)OSTaskCreate(OS_TaskIdle,
                       (void *)0,
                       &OSTaskIdleStk[0],
                       OS_IDLE_PRIO);
    #endif
#endif
}
/*$PAGE*/
/*
*********************************************************************************************************
*                                             INITIALIZATION
*                                      CREATING THE STATISTIC TASK
*
* Description: This function creates the Statistic Task.
*
* Arguments  : none
*
* Returns    : none
*********************************************************************************************************
*/

#if OS_TASK_STAT_EN > 0
static  void  OS_InitTaskStat (void)
{
#if OS_TASK_CREATE_EXT_EN > 0
    #if OS_STK_GROWTH == 1
    (void)OSTaskCreateExt(OS_TaskStat,
                          (void *)0,                                   /* No args passed to OS_TaskStat()*/
                          &OSTaskStatStk[OS_TASK_STAT_STK_SIZE - 1],   /* Set Top-Of-Stack               */
                          OS_STAT_PRIO,                                /* One higher than the idle task  */
                          OS_TASK_STAT_ID,
                          &OSTaskStatStk[0],                           /* Set Bottom-Of-Stack            */
                          OS_TASK_STAT_STK_SIZE,
                          (void *)0,                                   /* No TCB extension               */
                          OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);  /* Enable stack checking + clear  */
    #else
    (void)OSTaskCreateExt(OS_TaskStat,
                          (void *)0,                                   /* No args passed to OS_TaskStat()*/
                          &OSTaskStatStk[0],                           /* Set Top-Of-Stack               */
                          OS_STAT_PRIO,                                /* One higher than the idle task  */
                          OS_TASK_STAT_ID,
                          &OSTaskStatStk[OS_TASK_STAT_STK_SIZE - 1],   /* Set Bottom-Of-Stack            */
                          OS_TASK_STAT_STK_SIZE,
                          (void *)0,                                   /* No TCB extension               */
                          OS_TASK_OPT_STK_CHK | OS_TASK_OPT_STK_CLR);  /* Enable stack checking + clear  */
    #endif
#else
    #if OS_STK_GROWTH == 1
    (void)OSTaskCreate(OS_TaskStat,
                       (void *)0,                                      /* No args passed to OS_TaskStat()*/
                       &OSTaskStatStk[OS_TASK_STAT_STK_SIZE - 1],      /* Set Top-Of-Stack               */
                       OS_STAT_PRIO);                                  /* One higher than the idle task  */
    #else
    (void)OSTaskCreate(OS_TaskStat,
                       (void *)0,                                      /* No args passed to OS_TaskStat()*/
                       &OSTaskStatStk[0],                              /* Set Top-Of-Stack               */
                       OS_STAT_PRIO);                                  /* One higher than the idle task  */
    #endif
#endif
}
#endif
/*$PAGE*/
/*
*********************************************************************************************************
*                                             INITIALIZATION
*                            INITIALIZE THE FREE LIST OF TASK CONTROL BLOCKS
*
* Description: This function is called by OSInit() to initialize the free list of OS_TCBs.
*
* Arguments  : none
*
* Returns    : none
*********************************************************************************************************
*/

static  void  OS_InitTCBList (void)
{
    INT8U    i;
    OS_TCB  *ptcb1;
    OS_TCB  *ptcb2;