GUI_Init

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  • GUI_Init

    Hello,

    Is there a way to deinit GUI so we can reinit using GUI_Init. For battery powered applications, we need to kill display task and shut down LCD. Upon keypress, we need to restart LCD and emwin stack. As we can kill display task in the middle of doing something, resuming might be harmful for the emwin stack internal states. As it will looses sync with LCD

    In fact, there is a function available in emwin. Tried it. It does not seem to work.

    Thanks

    Kerem

  • Hello Kerem,

    we have added the function GUI_Exit() to the latest emWin version (V5.34).
    This function de-initializes emWin and the task can be killed or restarted.

    Regards,
    Sven
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  • I have 5.28 version of emWin library.
    In its manual I already see description of GUI_Exit() function.
    And i have such function prototype in 'GUI.h' file.
    I want to use it for re-initialization process after emWin runs out of memory (another bug in ...Ex() functions):
    This is my code:

    if (GUI_ALLOC_GetNumFreeBytes() < 2 * 1024) {
    taskENTER_CRITICAL();
    GUI_Exit();
    LCD_reset();
    GUI_Init(); //hardfault here, somewhere in hidden part after LCD_X_Config()
    taskEXIT_CRITICAL();
    }

    But when I try to use it i catch hardfault error.
    Could you comment such behaviour?
    My full project you can take here:
    yadi.sk/d/B0ewihUcvqFac