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上传时间: 2010-07-19
详细说明： µC/OS-II now contains a new function called OSEventPendMulti() which allows a task to pend on multiple events (semaphores, mailboxes and queues) in any combination (see example diagram below). This new function is found in OS_CORE.C and is enabled by setting OS_EVENT_MULTI_EN to 1 in OS_CFG.H. With OSEventPendMulti() it’s possible to pend on any number of semaphores, mailboxes and message queues at the same time (we don’t support Mutex and Event Flags at this time). If a task pends on a combination of the above ‘e vents’ then, as soon an event is posted (and the pending task is the highest priority task pending on the event), the waiting task will wake up and be ‘handed’ the event. If events are present as the task pends then ALL the available events will be provided to the task ...展开收缩
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