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semaphore in coroutine?

Posted by dcraw on December 8, 2007
Is it possible to simulate a semaphore for use in coroutines by creating a queue using xQueueCreate(1, 0); Would I have to pass a pointer to allocated storage in the pvItemToQueue parameter in the crQUEUE_SEND call or could I just set this parameter to zero?

Also, on a separate issue the docs say that crQUEUE_SEND can only be called from within the co-routine function itself and not from a function called by the co-routine. I was wondering if it was safe to violate this rule if the xTicksToWait parameter was set to zero and hence cause the crQUEUE_SEND call to be non-blocking?

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