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TIVA graphics library

gkonzak
Intellectual 470 points

May I suggest that the WidgetMessageQueueProcess function be changed? Looping continuously processing all the messages in the queue can take a long time, and if you are communicating with a serial trunk that is timing critical, a device can fall off the trunk. Instead of:

while(g_ui32MQRead != g_ui32MQWrite)


change the while to if. That way the function can be called on a regular basis along with serial processing functions without having to make the serial functions interrupt routines. I haven't seen any difference in screen write time.  

  • 0
    TI__Genius 10040 points

    I have opened up an issue with the software team containing your suggestion.  They will need to ensure that the change will not have any adverse affects on other use-cases that may exist for this API.  I do not have any estimate as to when they might be able to investigate and/or implement this change

    --Bobby

  • 0 in reply to Bobby Bradford
    Intellectual 470 points

    No problem. I understand others may expect all messages be processed at once, but if you have a large screen that can take a long time to switch between screens and precludes doing anything else during that time except interrupts. The slider can be a big offender. If the customer slides back and forth quickly it basically hangs everything up until they stop.

    What about my other suggestion? There hasn't been any comment on that.

    http://e2e.ti.com/support/microcontrollers/tiva_arm/f/908/t/334112.aspx

  • 0 in reply to gkonzak
    TI__Genius 10040 points

    I've added a note to the software issue to refer to that forum post as well.

    --Bobby