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xQueueReceive example conflict

Posted by alsaleem on July 17, 2016


I was viewing the xQueueReceive example in web-site (http://www.freertos.org/a00118.html).

The code for (vADifferentTask) makes a pointer to struct AMessage *pxRxedMessage

The description for this function says :


Pointer to the buffer into which the received item will be copied

So, when calling this function, is it supposed to copy the message to my buffer or will provide a pointer to it?

There is a conflict here. I assume queue item will be deleted after call finishes, correct?



xQueueReceive example conflict

Posted by richard_damon on July 17, 2016

The parameter is a pointer to the buffer, often expressed as &buffer (where buffer is the buffer to put the data into). Note that you tend to pass buffers to functions by actually passing their address as a pointer.


alternate (5320 bytes)

xQueueReceive example conflict

Posted by rtel on July 18, 2016

Perhaps the following will help? http://www.freertos.org/Embedded-RTOS-Queues.html


alternate (5320 bytes)

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