mirror of https://github.com/m-labs/artiq.git
74 lines
2.5 KiB
Python
Executable File
74 lines
2.5 KiB
Python
Executable File
#!/usr/bin/python
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# Copyright (C) 2012-2015 Robert Jordens <jordens@gmail.com>
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import argparse
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from scipy import interpolate
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import numpy as np
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from artiq.protocols.pc_rpc import Client
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from artiq.tools import verbosity_args, init_logger
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def get_argparser():
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parser = argparse.ArgumentParser(description="""PDQ2 client.
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Evaluates times and voltages, interpolates and uploads
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them to the controller.""")
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parser.add_argument("-s", "--server", default="::1",
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help="hostname or IP of the controller to connect to")
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parser.add_argument("--port", default=3252, type=int,
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help="TCP port to use to connect to the controller")
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parser.add_argument("-c", "--channel", default=0, type=int,
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help="channel: 3*board_num+dac_num [%(default)s]")
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parser.add_argument("-f", "--frame", default=0, type=int,
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help="frame [%(default)s]")
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parser.add_argument("-t", "--times", default="np.arange(5)*1e-6",
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help="sample times (s) [%(default)s]")
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parser.add_argument("-u", "--voltages",
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default="(1-np.cos(t/t[-1]*2*np.pi))/2",
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help="sample voltages (V) [%(default)s]")
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parser.add_argument("-o", "--order", default=3, type=int,
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help="interpolation (0: const, 1: lin, 2: quad,"
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" 3: cubic) [%(default)s]")
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parser.add_argument("-e", "--free", default=False, action="store_true",
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help="software trigger [%(default)s]")
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verbosity_args(parser)
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return parser
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def main():
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args = get_argparser().parse_args()
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init_logger(args)
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dev = Client(args.server, args.port, "pdq2")
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freq = dev.get_freq()
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times = np.around(eval(args.times, globals(), {})*freq)
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voltages = eval(args.voltages, globals(), dict(t=times/freq))
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dt = np.diff(times.astype(np.int))
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if args.order:
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tck = interpolate.splrep(times, voltages, k=args.order, s=0)
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u = interpolate.spalde(times, tck)
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else:
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u = voltages[:, None]
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segment = []
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for dti, ui in zip(dt, u):
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segment.append({
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"duration": int(dti),
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"channel_data": [{
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"bias": {
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"amplitude": [float(uij) for uij in ui]
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}
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}]
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})
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program = [[] for i in range(args.frame)]
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program.append(segment)
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dev.park()
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dev.program(program, [args.channel])
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dev.unpark()
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dev.cmd("TRIGGER", args.free)
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if __name__ == "__main__":
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main()
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