ttl_clock module

class TTLClock

TTLClock class is used for counting the number of TTL pulses and the time of the last TTL pulse

get_time()

returns the current time of the clock :Returns: time (float) – the current time of the clock

reset(start_time=0)

resets the clock and ttl-counter :param start_time: the time in seconds to start the clock from :type start_time: float

update()

updates the ttl count and time of the last ttl pulse

wait_for_first_ttl(wait=True)

This function waits for the first TTL and then resets the clock appropriately :param wait: if True, the function will wait for the first TTL :type wait: bool

wait_until(time)

waits until the given time since the beginning of the run :param time: time in seconds :type time: float

Returns:

• real_time (float) – time that the real start occurs

• start_ttl (int) – Number of TRs recorded since the beginning of the run

• start_ttl_time (float) – Time since the last TR