时间管理相关（os_time.c）

Task延迟

void  OSTimeDly (INT32U ticks)
{INT8U      y;
#if OS_CRITICAL_METHOD == 3u                     /* Allocate storage for CPU status register           */OS_CPU_SR  cpu_sr = 0u;
#endifif (OSIntNesting > 0u)                       /* See if trying to call from an ISR                  */{return;}if (OSLockNesting > 0u)                      /* See if called with scheduler locked                */{return;}if (ticks > 0u)                              /* 0 means no delay!                                  */{OS_ENTER_CRITICAL();y            =  OSTCBCur->OSTCBY;        /* Delay current task                                 */OSRdyTbl[y] &= (OS_PRIO)~OSTCBCur->OSTCBBitX;if (OSRdyTbl[y] == 0u){OSRdyGrp &= (OS_PRIO)~OSTCBCur->OSTCBBitY;}OSTCBCur->OSTCBDly = ticks;              /* Load ticks in TCB                                  */OS_EXIT_CRITICAL();OS_Sched();                              /* Find next task to run!                             */}
}

按时、分、秒、毫秒延时

#if OS_TIME_DLY_HMSM_EN > 0u
INT8U  OSTimeDlyHMSM (INT8U   hours,INT8U   minutes,INT8U   seconds,INT16U  ms)
{INT32U ticks;if (OSIntNesting > 0u)                       /* See if trying to call from an ISR                  */{return (OS_ERR_TIME_DLY_ISR);}if (OSLockNesting > 0u)                      /* See if called with scheduler locked                */{return (OS_ERR_SCHED_LOCKED);}#if OS_ARG_CHK_EN > 0uif (hours == 0u){if (minutes == 0u){if (seconds == 0u){if (ms == 0u){return (OS_ERR_TIME_ZERO_DLY);}}}}if (minutes > 59u){return (OS_ERR_TIME_INVALID_MINUTES);    /* Validate arguments to be within range              */}if (seconds > 59u){return (OS_ERR_TIME_INVALID_SECONDS);}if (ms > 999u){return (OS_ERR_TIME_INVALID_MS);}#endif/* Compute the total number of clock ticks required.. *//* .. (rounded to the nearest tick)                   */ticks = ((INT32U)hours * 3600uL + (INT32U)minutes * 60uL + (INT32U)seconds) * OS_TICKS_PER_SEC+ OS_TICKS_PER_SEC * ((INT32U)ms + 500uL / OS_TICKS_PER_SEC) / 1000uL;OSTimeDly (ticks);return (OS_ERR_NONE);
}
#endif

恢复被延时的Task

#if OS_TIME_DLY_RESUME_EN > 0u
INT8U  OSTimeDlyResume (INT8U prio)
{OS_TCB    *ptcb;
#if OS_CRITICAL_METHOD == 3u                                   /* Storage for CPU status register      */OS_CPU_SR  cpu_sr = 0u;
#endifif (prio >= OS_LOWEST_PRIO){return (OS_ERR_PRIO_INVALID);}OS_ENTER_CRITICAL();ptcb = OSTCBPrioTbl[prio];                                 /* Make sure that task exist            */if (ptcb == (OS_TCB *)0){OS_EXIT_CRITICAL();return (OS_ERR_TASK_NOT_EXIST);                        /* The task does not exist              */}if (ptcb == OS_TCB_RESERVED){OS_EXIT_CRITICAL();return (OS_ERR_TASK_NOT_EXIST);                        /* The task does not exist              */}if (ptcb->OSTCBDly == 0u)                                  /* See if task is delayed               */{OS_EXIT_CRITICAL();return (OS_ERR_TIME_NOT_DLY);                          /* Indicate that task was not delayed   */}ptcb->OSTCBDly = 0u;                                       /* Clear the time delay                 */if ((ptcb->OSTCBStat & OS_STAT_PEND_ANY) != OS_STAT_RDY){ptcb->OSTCBStat     &= ~OS_STAT_PEND_ANY;              /* Yes, Clear status flag               */ptcb->OSTCBStatPend  =  OS_STAT_PEND_TO;               /* Indicate PEND timeout                */}else{ptcb->OSTCBStatPend  =  OS_STAT_PEND_OK;}if ((ptcb->OSTCBStat & OS_STAT_SUSPEND) == OS_STAT_RDY)    /* Is task suspended?                   */{OSRdyGrp               |= ptcb->OSTCBBitY;             /* No,  Make ready                      */OSRdyTbl[ptcb->OSTCBY] |= ptcb->OSTCBBitX;OS_EXIT_CRITICAL();OS_Sched();                                            /* See if this is new highest priority  */}else{OS_EXIT_CRITICAL();                                    /* Task may be suspended                */}return (OS_ERR_NONE);
}
#endif

返回系统当前的Tick计数值

#if OS_TIME_GET_SET_EN > 0u
INT32U  OSTimeGet (void)
{INT32U     ticks;
#if OS_CRITICAL_METHOD == 3u                     /* Allocate storage for CPU status register           */OS_CPU_SR  cpu_sr = 0u;
#endifOS_ENTER_CRITICAL();ticks = OSTime;OS_EXIT_CRITICAL();return (ticks);
}
#endif

设置系统的Tick计数值

#if OS_TIME_GET_SET_EN > 0u
void  OSTimeSet (INT32U ticks)
{
#if OS_CRITICAL_METHOD == 3u                     /* Allocate storage for CPU status register           */OS_CPU_SR  cpu_sr = 0u;
#endifOS_ENTER_CRITICAL();OSTime = ticks;OS_EXIT_CRITICAL();
}
#endif