28 lines
996 B
Markdown
28 lines
996 B
Markdown
# Sleep management
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The MCU can go to sleep when no user input happens. In this case, the main `while(1)` should look like this:
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```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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```
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You should also add the following lines to your input device read function to signal a wake-up (press, touch or click etc.) has happened:
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```c
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lv_tick_inc(LV_DISP_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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```
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In addition to `lv_disp_get_inactive_time()` you can check `lv_anim_count_running()` to see if all animations have finished.
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