rtc_counter_handler
This handler executes a repeating timer that counts the ticks while an event is going on.
rtc_example_create_sched_oneshot
Call this function to run a 1000-tick timer once. The timer will not be rescheduled in the associated callback function.
rtc_example_create_sched_periodic
Call this function to run a 1000-tick timer continuously. The callback function reschedules the timer continuously.