make_trigger.py
55b5c0e44cd4master

make_trigger.py
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			# inserted for trigger support by mveldmann

			from types import SimpleNamespace

			from pypulseq.opts import Opts


			def make_trigger(channel: str, delay: float = 0, duration: float = 0, system: Opts = Opts()) -> SimpleNamespace:
			"""
			Creates a trigger event.

			Parameters
			----------
			channel : str
			Must be one of 'physio1' or 'physio2'.
			delay : float, default=0
			Delay in seconds
			duration: float, default=0
			Duration in seconds.
			system : Opts, default=Opts()
			System limits.

			Returns
			-------
			trigger : SimpleNamespace
			Trigger event.

			Raises
			------
			ValueError
			If invalid `channel` is passed. Must be one of 'physio1' or 'physio2'.
			"""

			if channel not in ['physio1', 'physio2']:
			raise ValueError(f"Channel {channel} is invalid. Must be one of 'physio1' or 'physio2'.")

			trigger = SimpleNamespace()
			trigger.type = 'trigger'
			trigger.channel = channel
			trigger.delay = delay
			trigger.duration = duration
			if trigger.duration <= system.grad_raster_time:
			trigger.duration = system.grad_raster_time

			return trigger