Function 

Description 

vm_pwr_get_battery_level 

Get a calculated battery level. This battery level is calculated based on the battery voltage and then feed to an algorithm to ensure the level is monotonically decreasing. 

vm_pwr_is_charging 

Get the current battery charging status. 

vm_pwr_lcd_sleep_in 

LCD module enter sleep mode. 

vm_pwr_lcd_sleep_out 

LCD module leave sleep mode. 

vm_pwr_reboot 

Reboot the system. The system will restart after normal shutdown flow, there is no need to press the power key. The applcation does not receive VM_EVENT_QUIT event. Therefore developers should ensure vital information are stored properly before calling this function. 

vm_pwr_scheduled_startup 

this interface will set device auto power on option, include time and check rules. the option will not save always, you need set it again after device reboot. 

vm_pwr_shutdown 

Shutdown the system. The shutdown flow will uninitialize the LinkIt runtime directly. The applcation does not receive VM_EVENT_QUIT event. Therefore developers should ensure vital information are stored properly before calling this function.