esp_timer_impl_set_alarm() function
Set up the timer interrupt to fire at a particular time If the alarm time is too close in the future, implementation should set the alarm to the earliest time possible.
Syntax
void esp_timer_impl_set_alarm(uint64_t timestamp); Arguments
timestamp
time in microseconds when interrupt should fire (relative to boot time, i.e. as returned by esp_timer_impl_get_time)