IAR PowerPac RTOS User Guide

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Additional InformationIf none of the specified events are signaled, the task is suspended. The first of the specified events will wake the task.These events are signaled by another task, a S/W timer or an interrupt handler. Any bit in the 8-bit event mask mayenable the corresponding event.ExampleOS_WaitEvent(3); /* Wait for event 1 or 2 to be signaled */For a further example, see OS_SignalEvent().OS_WaitSingleEvent()DescriptionWaits for one of the events specified by the bitmask and clears only that event after it occurs.Prototypechar OS_WaitSingleEvent (char EventMask);ParameterDescriptionEventMaskTable 83: OS_WaitSingleEvent() parameter listReturn valueAll masked events that have actually occurred.Additional InformationIf none of the specified events are signaled, the task is suspended. The first of the specified events will wake the task.These events are signaled by another task, a S/W timer, or an interrupt handler. Any bit in the 8-bit event mask mayenable the corresponding event. All unmasked events remain unchanged.ExampleOS_WaitSingleEvent(3); /* Wait for event 1 or 2 to be signaled */OS_WaitEventTimed()DescriptionWaits for the specified events for a given time, and clears the event memory after an event occurs.Prototypechar OS_WaitEventTimed (char EventMask,OS_TIME TimeOut);ParameterDescriptionEventMaskTimeoutTable 84: OS_WaitEventTimed() parameter listReturn valueThe events that have actually occurred within the specified time.0 if no events were signaled in time.Additional InformationThe events that the task will be waiting for.The events that the task will be waiting for.Maximum time in timer ticks until the events have to be signaled.The data type OS_TIME defaults to an integer, therefore valid values are1
Task eventsExampleOS_WaitEventTimed(3, 10); /* Wait for event 1 or 2 to be signaled within 10 ms */OS_WaitSingleEventTimed()DescriptionWaits for the specified events for a given time; after an event occurs, only that event is cleared.Prototypechar OS_WaitSingleEventTimed (char EventMask,OS_TIME TimeOut);ParameterDescriptionEventMaskThe events that the task will be waiting for.TimeoutMaximum time in timer ticks until the events have to be signaled. The data type OS_TIMEdefaults to an integer, therefore valid values are1
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IAR PowerPac RTOSUser GuidePPRTOS-2
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PrefaceWelcome to the IAR PowerPac
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ContentsPreface ...................
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ContentsOS_WaitCSema() ............
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ContentsOS_LeaveInterrupt() .......
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Introduction to IAR PowerPacRTOSWha
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Basic conceptsTasksIn this context,
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Basic conceptsPREEMPTIVES MULTITASK
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Basic conceptsMAILBOXES AND QUEUESA
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Basic conceptsThe active task may b
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Basic conceptsThe flowchart below i
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Basic conceptsLIST OF LIBRARIESIn y
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Task routinesIntroductionA task tha
Page 27 and 28: Task routinesOS_CREATETASK() can be
Page 29 and 30: Task routinesExampleThe following e
Page 31 and 32: Task routinesExampleint sec,min;voi
Page 33 and 34: Task routinesAdditional Information
Page 35 and 36: Task routinesReturn valueOS_TASKID:
Page 37 and 38: Software timersSoftware timerA soft
Page 39 and 40: Software timers#define OS_CREATETIM
Page 41 and 42: Software timersOS_SetTimerPeriod()D
Page 43 and 44: Software timersAdditional Informati
Page 45 and 46: Software timersAdditional Informati
Page 47 and 48: Software timersExampleOS_TIMER TIME
Page 49 and 50: Resource semaphoresIntroductionReso
Page 51 and 52: Resource semaphoresResource semapho
Page 53 and 54: Resource semaphoresOS_Request()Desc
Page 55 and 56: Counting SemaphoresIntroductionCoun
Page 57 and 58: Counting SemaphoresPrototypevoid OS
Page 59 and 60: Counting SemaphoresReturn value0: I
Page 61 and 62: MailboxesWhy mailboxes?In the prece
Page 63 and 64: MailboxesMailboxes API function ove
Page 65 and 66: MailboxesExampleSingle-byte mailbox
Page 67 and 68: MailboxesPrototypevoid OS_GetMail (
Page 69 and 70: MailboxesOS_WaitMail()DescriptionWa
Page 71 and 72: QueuesWhy queues?In the preceding c
Page 73 and 74: QueuesReturn valueThe size of the r
Page 75 and 76: QueuesExamplestatic void MemoryTask
Page 77: Task eventsIntroductionTask events
Page 81 and 82: Task eventsPrototypechar OS_ClearEv
Page 83 and 84: Event objectsIntroductionEvent obje
Page 85 and 86: Event objectsExampleif (OS_EVENT_Wa
Page 87 and 88: Event objectsExampleOS_EVENT_Reset(
Page 89 and 90: Heap type memory managementANSI C o
Page 91 and 92: Fixed block size memory poolsIntrod
Page 93 and 94: Fixed block size memory poolsProtot
Page 95 and 96: Fixed block size memory poolsProtot
Page 97 and 98: StacksIntroductionThe stack is the
Page 99 and 100: InterruptsIntroductionIn this chapt
Page 101 and 102: InterruptsRules for interrupt handl
Page 103 and 104: InterruptsOS_LeaveInterruptNoSwitch
Page 105 and 106: InterruptsNesting interrupt routine
Page 107 and 108: Critical RegionsIntroductionCritica
Page 109 and 110: System variablesIntroductionThe sys
Page 111 and 112: Configuration for your targetsystem
Page 113 and 114: Time measurementIntroductionIAR Pow
Page 115 and 116: Time measurementPrototypeU32 OS_Get
Page 117 and 118: Time measurementPrototypeOS_U32 OS_
Page 119 and 120: RTOS-aware debuggingThis chapter de
Page 121 and 122: RTOS-aware debuggingTimersA softwar
Page 123 and 124: DebuggingRuntime errorsSome error c
Page 125 and 126: DebuggingValue Define Description17
Page 127 and 128: Performance and resource usageThis
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Performance and resource usageThe c
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Performance and resource usage*/sta
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ReentranceAll routines that can be
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LimitationsThe following limitation
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Source code of kernel and libraryIn
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Additional modulesKeyboard manager:
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FAQ (frequently asked questions)Q:
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GlossaryActive TaskCooperativemulti
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IndexIndexAAdditional modules . . .
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IndexOS_WaitSingleEventTimed(). . .
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IAR PowerPac RTOS User Guide

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