106 lines
3.9 KiB
Python
106 lines
3.9 KiB
Python
# *****************************************************************************
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc.,
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# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# Module authors: Oksana Shliakhtun <oksana.shliakhtun@psi.ch>
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# *****************************************************************************
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import time
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import re
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from frappy.core import StringIO, HasIO, Readable, Drivable, \
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Parameter, FloatRange, IntRange, EnumType, \
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Enum, Property, StringType
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# from SR830 import string_to_value
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class BridgeIO(StringIO):
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end_of_line = ('\r\n', '') # read terminator / rmpty write terminator
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identification = [('*IDN?\r\n', r'Stanford_Research_Systems,.*'),
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('RPER 510\r\nRPER?\r\n', '510')]
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class Base(HasIO):
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port = Property('modules port', IntRange(0, 15))
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def command(self, command, replylines=1):
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with self._lock:
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reply = super().communicate(f'sndt {self.port:x}, "{command}"\r\n')
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for _ in range(replylines-1):
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super().communicate('')
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head, tail = reply.split('#', 1)
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assert head[:5] == f'MSG {self.port:x},'
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return tail[tail[1:int(tail[0])+1]:]
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class SIM921(Base, Drivable):
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# channel = Property('sim921 module', StringType())
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setpoint = Parameter('temperature deviation', datatype=FloatRange, unit='K')
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value = Parameter('resistance', datatype=FloatRange, unit='ohm')
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dev = Parameter('resistance deviation', FloatRange())
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RES_RANGE = ['20mOhm', '200mOhm', '2Ohm', '20Ohm', '200Ohm', '2kOhm', '20kOhm', '200kOhm',
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'2MOhm', '20MOhm']
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TIME_CONST = ['0.3s', '1s', '3s', '10s', '30s', '100s', '300s']
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EXCT_RANGE = ['0', '3uV', '10uV', '30uV', '100uV', '300uV', '1mV', '3mV', '10mV', '30mV']
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irange = Parameter('range index', EnumType('resistance range index',
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{name: idx for idx, name in enumerate(RES_RANGE)}), readonly=False)
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phase = Parameter('phase', FloatRange, unit='ang')
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tc = Parameter('time constant value', FloatRange(1e-1, 3e2), unit='s', readonly=False)
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itc = Parameter('time constant index',
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EnumType('time const. index range',
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{name: value for value, name in enumerate(TIME_CONST)}), readonly=False)
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autorange = Parameter('autorange_on', EnumType('autorange', off=0, on=1),
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readonly=False, default=0)
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iexct = Parameter('excitation index', IntRange)
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ioClass = BridgeIO
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def read_value(self):
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reply = self.command('rval?', 2)
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return reply
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def read_phase(self):
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return self.command('phase?', 2)
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def read_setpoint(self):
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return self.command('rset?')
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# def write_setpoint(self, setpoint):
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# return self.command('rset', setpoint)
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def read_tc(self):
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return self.command('tcon?')
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# def write_tc(self, tc):
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# return self.command('tcon', tc)
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def read_dev(self):
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return self.command('rdev?')
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def read_autorange(self):
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return self.command('agai?')
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# def write_autorange(self, autorange):
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# return self.command('agai', autorange)
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def read_iexct(self):
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return self.command('exci?')
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# def write_iexct(self, iexct):
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# return self.command('exci', iexct) |