Check task queue without reading it?

Kernel
1

I would like to check whether there’s a message in a task queue without having to actually read/copy out the message. Is there a way to do this?

2

Do you know the comprehensive API docs like Queue Management - FreeRTOS™ (including e.g. uxQueueMessagesWaiting) ?

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3

I didn’t stumble upon those in my searching. I saw a list of API functions and thought that was it. I totally missed the link to the “extra” functions.

Thank you!

4

There is a very interesting instruction.

Called xQueuePeek()

It reads the data from the queue and does not remove it from the queue.

It may be interesting for you.

A little logic lets you see if messages have arrived.

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