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34 lines
1.1 KiB
ReStructuredText
34 lines
1.1 KiB
ReStructuredText
================
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Sleep management
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================
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The MCU can go to sleep when no user input happens. In this case, the
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main ``while(1)`` should look like this:
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.. code:: c
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while(1) {
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/*Normal operation (no sleep) in < 1 sec inactivity*/
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if(lv_disp_get_inactive_time(NULL) < 1000) {
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lv_task_handler();
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}
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/*Sleep after 1 sec inactivity*/
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else {
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timer_stop(); /*Stop the timer where lv_tick_inc() is called*/
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sleep(); /*Sleep the MCU*/
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}
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my_delay_ms(5);
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}
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You should also add the following lines to your input device read
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function to signal a wake-up (press, touch or click etc.) has happened:
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.. code:: c
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lv_tick_inc(LV_DEF_REFR_PERIOD); /*Force task execution on wake-up*/
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timer_start(); /*Restart the timer where lv_tick_inc() is called*/
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lv_task_handler(); /*Call `lv_task_handler()` manually to process the wake-up event*/
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In addition to :cpp:func:`lv_disp_get_inactive_time` you can check
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:cpp:func:`lv_anim_count_running` to see if all animations have finished.
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