CTL message queue Event not triggered

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Peter Lissenburg

• January 30, 2014 11:41

I use a

ctl_message_queue_post_nb function to pass a message, and I have used

ctl_message_queue_setup_events to associate the Queue with an event.

All works fine... most of the time, but after a short time, or a few dozen posts, the event doesn't get set anymore. If I manually set the event bit it all fires off nicely. But the posting of a new pointer to the Queue does not set the event. The Queue is also not empty and no event is being written.

I have tried understanding the ASM code, but fail to see where it's going.

Any ideas on how to debug this one?

Pete L.

 

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  Paul Curtis

  • January 30, 2014 17:42

  ...events only get set when the queue becomes non-empty or non-full...  That is, on the transition.  You don't get the non-empty event being set when the queue is already non-empty.

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  Peter Lissenburg

  • February 01, 2014 00:32

  Thanks Paul,

  so if the event gets cleared for some reason and the queue has not been read, I need to poll the queue with

  ctl_message_queue_num_used

  and process what ever is there? Will add the code, but the previous behavior has stopped for some reason :-\

  (sorry for the delay in reply, but I have been distracted by a "hardfault" which I'll post next.)

  Thank you for your time.

  Pete L.

   

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