LVGL stops running,but the system is running normally

Bug (archived)
2

Hi @real23355 ,

Your while() loop in main has too longer sleep time to give you a workable solution. Depending on your system performance I would call lv_task_handler() somewhere between every 10 and 50mS. You either need to create a static counter in main to trigger the mode change or create an lv_task as I have described here, this link explains how to structure your code to deal with events with out blocking the system processing, which also applies to your scenario.

A quick solution using a static counter would be something like this:

int mode_test=0;
int main(int argc, char** argv)
{
    static uint32_t timer;
    lv_init();
    hal_init();
    test();

    while (1) {
        if( timer++ > 100 )  {    // Do this every 5 seconds
	        mode_test++;
		    if (mode_test > 3)mode_test = 1;
		    change_mode(mode_test);
            timer = 0;
        }
        lv_task_handler();   //  Always call lv_task_handler() every ~50mS to keep GUI responsive
        usleep(50000);     
    }
}

I hope that is helpful.

Kind Regards,

Pete