def __init__(self, DATA):
self.config = DATA.config
self.DATA = DATA
self.dummymode = self.config.getboolean("debug", "dummymode")
print "Open and setup Bridge, may take a couple of seconds..."
# import bridge hardware class
if self.config.get("RBridge", "Name").strip() == "PW_AVS47":
if not self.dummymode:
print "Initializing AVS47 ..."
# init from config file
self.setup_device_AVS47()
# sys.exit()
print "Done."
elif self.config.get("RBridge", "Name").strip() == "SRS_SIM900":
if not self.dummymode:
print "Initializing SIM921 ..."
# init from config file
self.setup_device_SIM921()
# sys.exit()
print "Done."
else:
self.BR = None
elif self.config.get("RBridge", "Name").strip() == "Lakeshore_370":
if not self.dummymode:
print "Initializing Lakeshore 370..."
# init from config file
self.setup_device_LS370()
# sys.exit()
print "Done."
elif self.config.get("RBridge", "Name").strip() == "Dummy":
from devices.dummy import DummyDevice
self.BR = DummyDevice()
print "Dummy bridge init"
else:
print "Warning:no bridge enabled!"
print "Bridge enabled: Done."
# make sure that we gracefully go down
atexit.register(self.disconnect)
class R_bridge(object):
"select a Bridge, and get resistance values from it"
def __init__(self, DATA):
self.config = DATA.config
self.DATA = DATA
self.dummymode = self.config.getboolean("debug", "dummymode")
print "Open and setup Bridge, may take a couple of seconds..."
# import bridge hardware class
if self.config.get("RBridge", "Name").strip() == "PW_AVS47":
if not self.dummymode:
print "Initializing AVS47 ..."
# init from config file
self.setup_device_AVS47()
# sys.exit()
print "Done."
elif self.config.get("RBridge", "Name").strip() == "SRS_SIM900":
if not self.dummymode:
print "Initializing SIM921 ..."
# init from config file
self.setup_device_SIM921()
# sys.exit()
print "Done."
else:
self.BR = None
elif self.config.get("RBridge", "Name").strip() == "Lakeshore_370":
if not self.dummymode:
print "Initializing Lakeshore 370..."
# init from config file
self.setup_device_LS370()
# sys.exit()
print "Done."
elif self.config.get("RBridge", "Name").strip() == "Dummy":
from devices.dummy import DummyDevice
self.BR = DummyDevice()
print "Dummy bridge init"
else:
print "Warning:no bridge enabled!"
print "Bridge enabled: Done."
# make sure that we gracefully go down
atexit.register(self.disconnect)
def setup_device_AVS47(self):
import devices.Picowatt_AVS47 as AVS
if self.config.get("RBridge", "Com_Method").strip() == "Ethernet":
self.BR = AVS.Picowatt_AVS47(
self.config.get("RBridge", "Name"),
"GPIB::" + self.config.get("RBridge", "GPIB_Addr").strip(),
ip=self.config.get("RBridge", "IP"),
delay=self.config.getfloat("RBridge", "delay"),
)
else:
pass
"""
self.BR = AVS.Picowatt_AVS47(
self.config.get('RBridge','Name'),
'GPIB::'+self.config.get('RBridge','GPIB_Addr').strip(),
delay=self.config.getfloat('RBridge','delay'))
"""
# basic setup
self.BR._open()
self.BR._set_remote()
# set avs bridge from zero to measure, if not already there
self.BR._set_input(1)
# channel, excitation, range : avs specific, so far
self.BR._set_channel(
self.config.getint("RBridge", "default_channel"),
self.config.getint("RBridge", "default_excitation"),
self.config.getint("RBridge", "default_range"),
)
def setup_device_SIM921(self):
import devices.SRS_SIM900 as SIM
"""def __init__(self,ip= ,gpib="GPIB::0",SIM921_port=6,SIM925_port=8):"""
if self.config.get("RBridge", "Com_Method").strip() == "Ethernet":
self.BR = SIM.SIM900(
self.config.get("RBridge", "Name"),
gpib="GPIB::" + self.config.get("RBridge", "GPIB_Addr").strip(),
ip=self.config.get("RBridge", "IP"),
delay=self.config.getfloat("RBridge", "delay"),
SIM921_port=self.config.getint("RBridge", "SIM921_port"), # 6 Bridge
SIM925_port=self.config.getint("RBridge", "SIM925_port"), # 8 multiplexer
SIM928_port=self.config.getint("RBridge", "SIM928_port"),
)
else:
pass
def setup_device_LS370(self):
import devices.Lakeshore_370 as LS370
"""def __init__(self,ip= ,gpib="GPIB::0"):"""
if self.config.get("RBridge", "Com_Method").strip() == "Ethernet":
self.BR = LS370.Lakeshore_370(
self.config.get("RBridge", "Name"),
gpib="GPIB::" + self.config.get("RBridge", "GPIB_Addr").strip(),
ip=self.config.get("RBridge", "IP"),
delay=self.config.getfloat("RBridge", "delay"),
)
print "LS enabled"
else:
print "Lakeshore 370 not setup"
pass
def get_R(self):
if not self.dummymode:
# R = self.BR._get_adc()
R = self.BR._get_ave() # two averages ....
return float(R)
else:
return random.random() * 100 + 10000
# def get_T_from_R(self, R):
# #if self.DATA.bridge.tainted:
# # return np.nan
# #else:
# # return self.CP[self.DATA.bridge.get_Channel()].getT_from_R(R)
# for i in range(20):
# if not self.DATA.bridge.tainted:
# return self.CP[self.DATA.bridge.get_Channel()].getT_from_R(R)
# time.sleep(1)
# print "DATA is tainted."
# print "Within 10 seconds, tainted did not turn false, returning data anyway..."
# return self.CP[self.DATA.bridge.get_Channel()].getT_from_R(R)
def get_T(self):
if not self.dummymode:
# the LS370 does the interpolation by itself
if self.config.get("RBridge", "Name").strip() == "Lakeshore_370":
return self.BR.get_T()
else:
raise "Get T only implemented for Lakeshore 370"
else:
# in dummymode we get 100mK + some random mK
return random.random() / 100 + 0.1
def set_Range(self, Range):
return self.BR._set_range(Range)
def set_Channel(self, Channel): # Channel is a TEMPERATURE Object
print "-> %s: waiting %.1fs" % (Channel.channel, Channel.settling_time)
self.BR._set_Excitation(-1) # -1 is excitation off for SIM900
self.BR._set_Channel(Channel.channel)
self.BR._set_Range(Channel.range)
self.BR._set_Excitation(Channel.excitation)
return self.BR._get_Channel() == Channel.channel
def disconnect(self):
if not self.dummymode:
print "disconnecting the bridge ..."
self.BR._set_local()
self.BR._close()