📄 os_tmr.lst
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/* simon delete end */
break;
case OS_TMR_OPT_CALLBACK_ARG:
pfnct = ptmr->OSTmrCallback; /* Execute callback function if availabl
-e ... */
C51 COMPILER V7.50 OS_TMR 12/14/2007 08:25:46 PAGE 13
/* simon delete for pass compiling */
#if 0
if (pfnct != (OS_TMR_CALLBACK)0) {
(*pfnct)((void *)ptmr, callback_arg); /* ... using the 'callback_arg' provided
- in call */
} else {
*perr = OS_ERR_TMR_NO_CALLBACK;
}
#endif
/* simon delete end */
break;
case OS_TMR_OPT_NONE:
break;
default:
*perr = OS_ERR_TMR_INVALID_OPT;
break;
}
OSTmr_Unlock();
return (OS_TRUE);
case OS_TMR_STATE_COMPLETED: /* Timer has already completed the ONE-S
-HOT or ... */
case OS_TMR_STATE_STOPPED: /* ... timer has not started yet.
- */
OSTmr_Unlock();
*perr = OS_ERR_TMR_STOPPED;
return (OS_TRUE);
case OS_TMR_STATE_UNUSED: /* Timer was not created
- */
OSTmr_Unlock();
*perr = OS_ERR_TMR_INACTIVE;
return (OS_FALSE);
default:
OSTmr_Unlock();
*perr = OS_ERR_TMR_INVALID_STATE;
return (OS_FALSE);
}
}
#endif
698
699 /*$PAGE*/
700 /*
701 **********************************************************************************************************
-**************
702 * SIGNAL THAT IT'S TIME TO UPDATE THE TIMERS
703 *
704 * Description: This function is typically called by the ISR that occurs at the timer tick rate and is used
- to signal to
705 * OSTmr_Task() that it's time to update the timers.
706 *
707 * Arguments : none
708 *
709 * Returns : OS_ERR_NONE The call was successful and the timer task was signaled.
710 * OS_ERR_SEM_OVF If OSTmrSignal() was called more often than OSTmr_Task() can handle the
- timers.
711 * This would indicate that your system is heavily loaded.
712 * OS_ERR_EVENT_TYPE Unlikely you would get this error because the semaphore used for signal
C51 COMPILER V7.50 OS_TMR 12/14/2007 08:25:46 PAGE 14
-ing is created
713 * by uC/OS-II.
714 * OS_ERR_PEVENT_NULL Again, unlikely you would ever get this error because the semaphore use
-d for signaling
715 * is created by uC/OS-II.
716 **********************************************************************************************************
-**************
717 */
718
719 #if OS_TMR_EN > 0
INT8U OSTmrSignal (void) reentrant
{
INT8U err;
err = OSSemPost(OSTmrSemSignal);
return (err);
}
#endif
729
730 /*$PAGE*/
731 /*
732 **********************************************************************************************************
-**************
733 * ALLOCATE AND FREE A TIMER
734 *
735 * Description: This function is called to allocate a timer.
736 *
737 * Arguments : none
738 *
739 * Returns : a pointer to a timer if one is available
740 **********************************************************************************************************
-**************
741 */
742
743 #if OS_TMR_EN > 0
static OS_TMR *OSTmr_Alloc (void) reentrant
{
OS_TMR *ptmr;
if (OSTmrFreeList == (OS_TMR *)0) {
return ((OS_TMR *)0);
}
ptmr = (OS_TMR *)OSTmrFreeList;
OSTmrFreeList = (OS_TMR *)ptmr->OSTmrNext;
ptmr->OSTmrNext = (OS_TCB *)0;
ptmr->OSTmrPrev = (OS_TCB *)0;
OSTmrUsed++;
OSTmrFree--;
return (ptmr);
}
#endif
761
762
763 /*
764 **********************************************************************************************************
-**************
765 * RETURN A TIMER TO THE FREE LIST
766 *
767 * Description: This function is called to return a timer object to the free list of timers.
768 *
C51 COMPILER V7.50 OS_TMR 12/14/2007 08:25:46 PAGE 15
769 * Arguments : ptmr is a pointer to the timer to free
770 *
771 * Returns : none
772 **********************************************************************************************************
-**************
773 */
774
775 #if OS_TMR_EN > 0
static void OSTmr_Free (OS_TMR *ptmr) reentrant
{
ptmr->OSTmrState = OS_TMR_STATE_UNUSED; /* Clear timer object fields
- */
ptmr->OSTmrOpt = OS_TMR_OPT_NONE;
ptmr->OSTmrPeriod = 0;
ptmr->OSTmrMatch = 0;
ptmr->OSTmrCallback = (OS_TMR_CALLBACK)0;
ptmr->OSTmrCallbackArg = (void *)0;
#if OS_TMR_CFG_NAME_SIZE > 1
ptmr->OSTmrName[0] = '?'; /* Unknown name
- */
ptmr->OSTmrName[1] = OS_ASCII_NUL;
#endif
ptmr->OSTmrPrev = (OS_TCB *)0; /* Chain timer to free list
- */
ptmr->OSTmrNext = OSTmrFreeList;
OSTmrFreeList = ptmr;
OSTmrUsed--; /* Update timer object statistics
- */
OSTmrFree++;
}
#endif
797
798 /*$PAGE*/
799 /*
800 **********************************************************************************************************
-**************
801 * INITIALIZATION
802 * INITIALIZE THE FREE LIST OF TIMERS
803 *
804 * Description: This function is called by OSInit() to initialize the free list of OS_TMRs.
805 *
806 * Arguments : none
807 *
808 * Returns : none
809 **********************************************************************************************************
-**************
810 */
811
812 #if OS_TMR_EN > 0
void OSTmr_Init (void) reentrant
{
#if OS_EVENT_NAME_SIZE > 10
INT8U err;
#endif
INT16U i;
OS_TMR *ptmr1;
OS_TMR *ptmr2;
OS_MemClr((INT8U *)&OSTmrTbl[0], sizeof(OSTmrTbl)); /* Clear all the TMRs
C51 COMPILER V7.50 OS_TMR 12/14/2007 08:25:46 PAGE 16
- */
OS_MemClr((INT8U *)&OSTmrWheelTbl[0], sizeof(OSTmrWheelTbl)); /* Clear the timer wheel
- */
ptmr1 = &OSTmrTbl[0];
ptmr2 = &OSTmrTbl[1];
for (i = 0; i < (OS_TMR_CFG_MAX - 1); i++) { /* Init. list of free TMRs
- */
ptmr1->OSTmrType = OS_TMR_TYPE;
ptmr1->OSTmrState = OS_TMR_STATE_UNUSED; /* Indicate that timer is inactive
- */
ptmr1->OSTmrNext = (void *)ptmr2; /* Link to next timer
- */
#if OS_TMR_CFG_NAME_SIZE > 1
ptmr1->OSTmrName[0] = '?'; /* Unknown name
- */
ptmr1->OSTmrName[1] = OS_ASCII_NUL;
#endif
ptmr1++;
ptmr2++;
}
ptmr1->OSTmrType = OS_TMR_TYPE;
ptmr1->OSTmrState = OS_TMR_STATE_UNUSED; /* Indicate that timer is inactive
- */
ptmr1->OSTmrNext = (void *)0; /* Last OS_TMR
- */
#if OS_TMR_CFG_NAME_SIZE > 1
ptmr1->OSTmrName[0] = '?'; /* Unknown name
- */
ptmr1->OSTmrName[1] = OS_ASCII_NUL;
#endif
OSTmrTime = 0;
OSTmrUsed = 0;
OSTmrFree = OS_TMR_CFG_MAX;
OSTmrFreeList = &OSTmrTbl[0];
OSTmrSem = OSSemCreate(1);
OSTmrSemSignal = OSSemCreate(0);
#if OS_EVENT_NAME_SIZE > 18
OSEventNameSet(OSTmrSem, (INT8U *)"uC/OS-II TmrLock", &err);/* Assign names to semaphores
- */
#else
#if OS_EVENT_NAME_SIZE > 10
OSEventNameSet(OSTmrSem, (INT8U *)"OS-TmrLock", &err);
#endif
#endif
#if OS_EVENT_NAME_SIZE > 18
OSEventNameSet(OSTmrSemSignal, (INT8U *)"uC/OS-II TmrSignal", &err);
#else
#if OS_EVENT_NAME_SIZE > 10
OSEventNameSet(OSTmrSemSignal, (INT8U *)"OS-TmrSig", &err);
#endif
#endif
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