forked from M-Labs/artiq
move novatech409b out of tree (#887)
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4c1fb0c2a1
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62e9b2d85e
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@ -1,201 +0,0 @@
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# Written by Joe Britton, 2015
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import math
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import logging
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import asyncio
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import asyncserial
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logger = logging.getLogger(__name__)
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class UnexpectedResponse(Exception):
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pass
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class Novatech409B:
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"""Driver for Novatech 409B 4-channel DDS.
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All output channels are in range [0, 1, 2, 3].
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All frequencies are in Hz.
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All phases are in turns.
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All amplitudes are in volts.
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"""
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error_codes = {
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"?0": "Unrecognized Command",
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"?1": "Bad Frequency",
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"?2": "Bad AM Command",
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"?3": "Input line too long",
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"?4": "Bad Phase",
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"?5": "Bad Time",
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"?6": "Bad Mode",
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"?7": "Bad Amp",
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"?8": "Bad Constant",
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"?f": "Bad Byte"
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}
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def __init__(self, serial_dev):
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if serial_dev is None:
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self.simulation = True
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else:
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self.simulation = False
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self.port = asyncserial.AsyncSerial(
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serial_dev,
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baudrate=19200,
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bytesize=8,
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parity="N",
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stopbits=1,
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xonxoff=0)
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def close(self):
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"""Close the serial port."""
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if not self.simulation:
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self.port.close()
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async def _ser_readline(self):
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c = await self.port.read(1)
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r = c
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while c != b"\n":
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c = await self.port.read(1)
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r += c
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return r
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async def _ser_send(self, cmd, get_response=True):
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"""Send a string to the serial port."""
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# Low-level routine for sending serial commands to device. It sends
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# strings and listens for a response terminated by a carriage return.
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# example:
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# ser_send("F0 1.0") # sets the freq of channel 0 to 1.0 MHz
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if self.simulation:
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logger.info("simulation _ser_send(\"%s\")", cmd)
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else:
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logger.debug("_ser_send(\"%s\")", cmd)
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self.port.ser.reset_input_buffer()
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await self.port.write((cmd + "\r\n").encode())
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if get_response:
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result = (await self._ser_readline()).rstrip().decode()
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logger.debug("got response from device: %s", result)
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if result != "OK":
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errstr = self.error_codes.get(result, "Unrecognized reply")
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s = "Erroneous reply from device: {ec}, {ecs}".format(
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ec=result, ecs=errstr)
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raise ValueError(s)
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else:
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pass
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async def reset(self):
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"""Hardware reset of 409B."""
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await self._ser_send("R", get_response=False)
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await asyncio.sleep(1)
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await self.setup()
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async def setup(self):
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"""Initial setup of 409B."""
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# Setup the Novatech 409B with the following defaults:
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# * command echo off ("E d")
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# * external clock ("") 10 MHz sinusoid -1 to +7 dBm
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await self._ser_send("E d", get_response=False)
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await self.set_phase_continuous(True)
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await self.set_simultaneous_update(False)
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async def save_state_to_eeprom(self):
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"""Save current state to EEPROM."""
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await self._ser_send("S")
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async def set_phase_continuous(self, is_continuous):
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"""Toggle phase continuous mode.
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Sends the "M n" command. This turns off the automatic
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clearing of the phase register. In this mode, the phase
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register is left intact when a command is performed.
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Use this mode if you want frequency changes to remain
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phase synchronous, with no phase discontinuities.
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:param is_continuous: True or False
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"""
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if is_continuous:
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await self._ser_send("M n")
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else:
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await self._ser_send("M a")
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async def set_simultaneous_update(self, simultaneous):
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"""Set simultaneous update mode.
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Sends the "I m" command. In this mode an update
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pulse will not be sent to the DDS chip until
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an "I p" command is sent. This is useful when it is
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important to change all the outputs to new values
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simultaneously.
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"""
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if simultaneous:
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await self._ser_send("I m")
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else:
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await self._ser_send("I a")
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async def do_simultaneous_update(self):
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"""Apply update in simultaneous update mode."""
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await self._ser_send("I p")
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async def set_freq(self, ch_no, freq):
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"""Set frequency of one channel."""
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# Novatech expects MHz
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await self._ser_send("F{:d} {:f}".format(ch_no, freq/1e6))
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async def set_phase(self, ch_no, phase):
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"""Set phase of one channel."""
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# phase word is required by device
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# N is an integer from 0 to 16383. Phase is set to
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# N*360/16384 deg; in ARTIQ represent phase in cycles [0, 1]
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phase_word = round(phase*16383)
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cmd = "P{:d} {:d}".format(ch_no, phase_word)
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await self._ser_send(cmd)
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async def set_gain(self, ch_no, volts):
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"""Set amplitude of one channel."""
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# due to error in Novatech it doesn't generate an error for
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# dac_value>1024, so need to trap.
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dac_value = int(math.floor(volts/0.51*1024))
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if dac_value < 0 or dac_value > 1023:
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s = "Amplitude out of range {v}".format(v=volts)
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raise ValueError(s)
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s = "V{:d} {:d}".format(ch_no, dac_value)
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await self._ser_send(s)
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async def get_status(self):
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if self.simulation:
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return ["00989680 2000 01F5 0000 00000000 00000000 000301",
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"00989680 2000 01F5 0000 00000000 00000000 000301",
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"00989680 2000 01F5 0000 00000000 00000000 000301",
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"00989680 2000 01F5 0000 00000000 00000000 000301",
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"80 BC0000 0000 0102 21"]
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else:
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self.port.ser.reset_input_buffer()
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result = []
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await self.port.write(("QUE" + "\r\n").encode())
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for i in range(5):
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m = (await self._ser_readline()).rstrip().decode()
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result.append(m)
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logger.debug("got device status: %s", result)
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return result
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async def ping(self):
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try:
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stat = await self.get_status()
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except asyncio.CancelledError:
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raise
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except:
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return False
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# check that version number matches is "21"
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if stat[4][20:] == "21":
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logger.debug("ping successful")
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return True
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else:
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return False
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@ -1,54 +0,0 @@
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#!/usr/bin/env python3
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# Written by Joe Britton, 2015
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import argparse
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import logging
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import sys
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import os
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import asyncio
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from artiq.devices.novatech409b.driver import Novatech409B
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from artiq.protocols.pc_rpc import simple_server_loop
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from artiq.tools import *
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logger = logging.getLogger(__name__)
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def get_argparser():
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parser = argparse.ArgumentParser(
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description="ARTIQ controller for the Novatech 409B 4-channel DDS box")
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simple_network_args(parser, 3254)
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parser.add_argument(
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"-d", "--device", default=None,
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help="serial port.")
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parser.add_argument(
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"--simulation", action="store_true",
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help="Put the driver in simulation mode, even if --device is used.")
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add_common_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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if os.name == "nt":
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asyncio.set_event_loop(asyncio.ProactorEventLoop())
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if not args.simulation and args.device is None:
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print("You need to specify either --simulation or -d/--device "
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"argument. Use --help for more information.")
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sys.exit(1)
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dev = Novatech409B(args.device if not args.simulation else None)
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asyncio.get_event_loop().run_until_complete(dev.setup())
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try:
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simple_server_loop(
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{"novatech409b": dev}, bind_address_from_args(args), args.port)
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finally:
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dev.close()
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if __name__ == "__main__":
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main()
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@ -10,8 +10,7 @@ class TestFrontends(unittest.TestCase):
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# Skip tests for GUI programs on headless CI environments.
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commands = {
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"aqctl": [
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"corelog", "lda", "novatech409b",
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"thorlabs_tcube"
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"corelog", "lda", "thorlabs_tcube"
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],
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"artiq": [
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"client", "compile", "coreanalyzer", "coremgmt", "ctlmgr",
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@ -1,46 +0,0 @@
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import sys
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import unittest
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from artiq.test.hardware_testbench import GenericControllerCase, ControllerCase
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class GenericNovatech409BTest:
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def test_parameters_readback(self):
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# write sample data and read it back
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for i in range(4):
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self.driver.set_freq(i, 1e6)
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self.driver.set_phase(i, 0.5)
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self.driver.set_gain(i, 0.25)
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result = self.driver.get_status()
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# check for expected status message; ignore all but first 23 bytes
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# compare with previous result extracted from Novatech
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for i in range(4):
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r = result[i]
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self.assertEqual(r[0:23], "00989680 2000 01F5 0000")
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class TestNovatech409B(GenericNovatech409BTest, ControllerCase):
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def setUp(self):
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ControllerCase.setUp(self)
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self.start_controller("novatech409b")
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self.driver = self.device_mgr.get("novatech409b")
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class TestNovatech409BSim(GenericNovatech409BTest, GenericControllerCase):
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def get_device_db(self):
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return {
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"novatech409b": {
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"type": "controller",
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"host": "::1",
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"port": 3254,
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"command": (sys.executable.replace("\\", "\\\\")
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+ " -m artiq.frontend.aqctl_novatech409b "
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+ "-p {port} --simulation")
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}
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}
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def setUp(self):
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GenericControllerCase.setUp(self)
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self.start_controller("novatech409b")
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self.driver = self.device_mgr.get("novatech409b")
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@ -46,21 +46,6 @@ You can choose the LDA model with the ``-P`` parameter. The default is LDA-102.
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:ref: artiq.frontend.aqctl_lda.get_argparser
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:prog: aqctl_lda
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Novatech 409B
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-------------
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Driver
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++++++
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.. automodule:: artiq.devices.novatech409b.driver
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:members:
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Controller
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++++++++++
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.. argparse::
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:ref: artiq.frontend.aqctl_novatech409b.get_argparser
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:prog: aqctl_novatech409b
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Thorlabs T-Cube
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---------------
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