Function	Purpose
• ENERGEST_TIME_T ENERGEST_CURRENT_TIME()	• Get the system time from the Energest time source.
• ENERGEST_SECOND	• The number of ticks per second from the Energest time source.
• ENERGEST_ON(type)	• Set the specified type to on and start tracking the time.
• ENERGEST_OFF(type)	• Set the specified type to off and update the total time.
• ENERGEST_SWITCH(type_off, type_on)	• Switch from tracking time for the first type to the second type.
• ENERGEST_GET_TOTAL_TIME()	• Get the total time Energest has been tracking.
• void energest_flush(void)	• Flush the Energest times for all components that are currently turned on.
• uint64_t energest_type_time(energest_type_t type)	• Read the total time the specified type has been turned on.
• void energest_init(void)	• Initialize the Energest module.



• The macro ENERGEST_CURRENT_TIME returns a platform dependent system time for use by the Energest module and the constant ENERGEST_SECOND specifies the number of ticks per second.
• The macros ENERGEST_ON, ENERGEST_OFF, and ENERGEST_SWITCH are used to tell the Energest module when a component changes mode and is normally only called by platforms and device drivers. When a component switches from one mode to another, it is recommended to use ENERGEST_SWITCH as it provides better accuracy.
• The macro ENERGEST_GET_TOTAL_TIME() returns the total time the Energest module has been tracking. This is normally the same as CPU + LPM + DEEP_LPM but can be overridden by platforms that provide additional Energest types.
• The function energest_flush updates the total time for all types that are currently turned on.
• The function energest_type_time returns the total time the specified type has been turned on. energy_flush should be called before reading the total time to ensure the total time has been updated.
• 6. The function energest_init() is called by the system during the boot-up procedure to initialize the Energest module.