make_adc.py
822297d0cbf0feature-spiral

make_adc.py
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			from decimal import *

			from pulseq.core.holder import Holder
			from pulseq.core.opts import Opts


			def makeadc(kwargs):
			"""
			Makes a Holder object for an ADC Event.

			Parameters
			----------
			kwargs : dict
			Key value mappings of ADC Event parameters_params and values.

			Returns
			-------
			adc : Holder
			ADC Event.
			"""

			num_samples = kwargs.get("num_samples", 0)
			system = kwargs.get("system", Opts())
			dwell = kwargs.get("dwell", 0)
			duration = kwargs.get("duration", 0)
			delay = kwargs.get("delay", 0)
			freq_offset = kwargs.get("freq_offset", 0)
			phase_offset = kwargs.get("phase_offset", 0)

			adc = Holder()
			adc.type = 'adc'
			adc.num_samples = num_samples
			adc.dwell = dwell
			adc.delay = delay
			adc.freq_offset = freq_offset
			adc.phase_offset = phase_offset
			adc.dead_time = system.adc_dead_time

			if (dwell == 0 and duration == 0) or (dwell > 0 and duration > 0):
			raise ValueError("Either dwell or duration must be defined, not both")

			if duration > 0:
			# getcontext().prec = 4
			adc.dwell = float(Decimal(duration) / Decimal(num_samples))
			adc.duration = dwell * num_samples if dwell > 0 else 0
			return adc