def _handleNewChunk(self, chunk):
self._cumBuf = np.concatenate((self._cumBuf, chunk))
while len(self._cumBuf) >= self.chunkSize:
properChunk = self._cumBuf[:self.chunkSize].copy()
self._cumBuf = self._cumBuf[self.chunkSize:].copy()
if self._axis is None:
axis = Q_(np.arange(len(properChunk)))
else:
axis = self._axis.copy()
properChunk = Q_(properChunk, 'V')
dataSet = DataSet(properChunk, [axis])
self.set_trait('currentDataSet', dataSet)
cur = time.perf_counter()
rate = 1.0 / (cur - self._lastTime)
self.set_trait('dataRate', Q_(rate, 'Hz'))
self._lastTime = cur
self._chunkReady(dataSet)
for fut in self.__pendingFutures:
if not fut.done():
fut.set_result(dataSet)
self.__pendingFutures = []
def __init__(self,
connection=None,
axis=1,
pitch=Q_(1),
objectName=None,
loop=None):
""" Axis `axis` at connection `connection`. Has pitch `pitch` in units
of 'full step count/length'."""
super().__init__(objectName=objectName, loop=loop)
self.connection = connection
self.axis = axis
self._status = '?'
self.set_trait('statusMessage', self._StatusMap[self._status])
self._isMovingFuture = asyncio.Future()
self._isMovingFuture.set_result(None)
self.prefPosUnit = (ureg.count / pitch).units
self.prefVelocUnit = (ureg.count / ureg.s / pitch).units
self.setPreferredUnits(self.prefPosUnit, self.prefVelocUnit)
self._microstepResolution = 50
self._pitch = pitch
self.define_context()
if not pitch.dimensionless:
self.velocity = Q_(1, 'mm/s')
else:
self.velocity = Q_(2000, 'count/s')
async def initialize(self):
self.clearStack()
self.set_trait('identification', await self._raw.nidentify(type=str))
limits = await self._raw.getnlimit(type=float)
self._hardwareMinimum = Q_(limits[0], 'mm')
self._hardwareMaximum = Q_(limits[1], 'mm')
self.velocity = Q_(await self._raw.gnv(type=float), 'mm/s')
# 500 mm/s accelleration should be good enough
self._raw.sna(500)
def __init__(self, objectName=None, loop=None):
super().__init__(objectName='PI tabular measurements', loop=loop)
self.dataSaver = DataSaver(objectName="Data Saver")
self.pi_conn = PI.Connection(PI_port)
#self.mani_conn2 = PI.Connection(Manip2_comport)
pi_stage = PI.AxisAtController(self.pi_conn)
pi_stage.objectName = "PI C-867 DLine"
pi_stage.setPreferredUnits(ureg.ps, ureg.ps / ureg.s)
self.TimeDomainScan = Scan(objectName='TimeDomainScan')
self.TimeDomainScan.manipulator = pi_stage
resource = rm.open_resource(SR7230_LAN_Port)
self.TimeDomainScan.dataSource = SR7230(resource, ethernet=True)
self.TimeDomainScan.dataSource.objectName = "SR7230"
self.TimeDomainScan.continuousScan = True
self.TimeDomainScan.minimumValue = Q_(840, 'ps')
self.TimeDomainScan.maximumValue = Q_(910, 'ps')
self.TimeDomainScan.overscan = Q_(1, 'ps')
self.TimeDomainScan.step = Q_(0.05, 'ps')
self.TimeDomainScan.positioningVelocity = Q_(40, 'ps/s')
self.TimeDomainScan.scanVelocity = Q_(1, 'ps/s')
self.TimeDomainScan.retractAtEnd = True
self.dataSource = self.TimeDomainScan
self.mani_conn1 = PI.Connection(Manip1_comport)
manipulator1 = PI.AxisAtController(self.mani_conn1)
manipulator1.setPreferredUnits(ureg.mm, ureg.mm / ureg.s)
manipulator1.objectName = "PI C-863 Manip"
self.manipulator1 = manipulator1
self.positioningVelocityM1 = Q_(4, 'mm/s')
self.scanVelocity = Q_(4, 'mm/s')
manipulator2 = DummyManipulator(
) # PI.AxisAtController(self.mani_conn2)
manipulator2.setPreferredUnits(ureg.mm, ureg.mm / ureg.s)
manipulator2.objectName = 'DummyManipulator 2'
self.manipulator2 = manipulator2
self.positioningVelocityM1 = Q_(4, 'mm/s')
self.scanVelocity = Q_(4, 'mm/s')
self.dataSaver.registerManipulator(self.manipulator1, 'Position1')
self.dataSaver.registerManipulator(self.manipulator2, 'Position2')
self.dataSaver.registerObjectAttribute(self, 'currentMeasurementName',
'currentTableEntry')
self.dataSaver.fileNameTemplate = '{date}-{name}-{currentTableEntry}-{Position1}-{Position2}'
self.dataSaver.set_trait('path', Path(r''))
self.TimeDomainScan.addDataSetReadyCallback(self.dataSaver.process)
self.TimeDomainScan.addDataSetReadyCallback(self.setCurrentData)
self._backAndForth = True
async def readDataSet(self):
if self.samplingMode == SR7230.SamplingMode.SingleShot:
data = np.array(await self.readCurrentOutput())
dataSet = DataSet(Q_(data), [])
self._dataSetReady(dataSet)
return dataSet
elif self.samplingMode == SR7230.SamplingMode.Buffered:
data = await self.readDataBuffer()
data = np.array(data)
dataSet = DataSet(Q_(data), [Q_(np.arange(0, len(data)))])
self._dataSetReady(dataSet)
return dataSet
def __init__(self, objectName=None, loop=None):
super().__init__(objectName='PI tabular measurements', loop=loop)
self.dataSaver = DataSaver(objectName="Data Saver")
self.pi_conn = PI.Connection(PI_Comport)
self.mani_conn = PI.Connection(PI_Manipulator)
pi_stage = PI.AxisAtController(
self.pi_conn,
ignore216=True) # ignore216 implemented by JanO Warning!
pi_stage.objectName = "PI C-863 DLine"
pi_stage.setPreferredUnits(ureg.ps, ureg.ps / ureg.s)
self.TimeDomainScan = Scan(objectName='TimeDomainScan')
self.TimeDomainScan.manipulator = pi_stage
self.TimeDomainScan.dataSource = SR830(rm.open_resource(SR800_Port))
self.TimeDomainScan.dataSource.objectName = "SR830"
self.TimeDomainScan.continuousScan = True
self.TimeDomainScan.minimumValue = Q_(1250, 'ps')
self.TimeDomainScan.maximumValue = Q_(1315, 'ps')
self.TimeDomainScan.overscan = Q_(3, 'ps')
self.TimeDomainScan.step = Q_(0.05, 'ps')
self.TimeDomainScan.positioningVelocity = Q_(30, 'ps/s')
self.TimeDomainScan.scanVelocity = Q_(1.6, 'ps/s')
self.TimeDomainScan.retractAtEnd = True
self.dataSource = self.TimeDomainScan
manipulator1 = PI.AxisAtController(
self.mani_conn,
ignore216=True) # ignore216 implemented by JanO Warning!
# ignore216 = True means that the error 216 (driven into end switch) will be ignored. There is a problem with the
# PI stage being used as a manipulator. It is showing this error despite being far away form the end siwtch or even not moving
manipulator1.setPreferredUnits(ureg.mm, ureg.mm /
ureg.s) # added JanO 22.1.2019
manipulator1.objectName = 'PI C-863'
self.manipulator1 = manipulator1
self.positioningVelocityM1 = Q_(4, 'mm/s')
self.scanVelocity = Q_(4, 'mm/s')
manipulator2 = TMCL(objectName="TMCL Rotator", port=tmcl_port)
manipulator2.setPreferredUnits(
ureg.deg,
ureg.dimensionless) # ureg.dimensionless, ureg.mm / ureg.s
self.manipulator2 = manipulator2
self.dataSaver.registerManipulator(self.manipulator1, 'Position')
self.dataSaver.registerManipulator(self.manipulator2, 'Rotation')
self.dataSaver.registerObjectAttribute(self, 'currentMeasurementName',
'currentTableEntry')
self.dataSaver.fileNameTemplate = '{date}-{name}-{currentTableEntry}-{Position}-{Rotation}'
self.dataSaver.set_trait('path', Path(
'E:/Messdaten/test/')) #added by Cornelius as standard savepath
self.TimeDomainScan.addDataSetReadyCallback(self.dataSaver.process)
self.TimeDomainScan.addDataSetReadyCallback(self.setCurrentData)
self._backAndForth = True
async def singleUpdate(self):
movFut = self._isMovingFuture
self._status = await self.send("SRG?", 1)
self.set_trait('value', Q_(await self.send(b'POS?'), 'mm'))
self.set_trait('isReferenced', bool(await self.send(b'FRF?')))
self.set_trait('isReferencing',
bool(self._status & self.StatusBits.Referencing.value))
self.set_trait('isOnTarget',
bool(self._status & self.StatusBits.OnTarget.value))
self.set_trait('isServoOn',
bool(self._status & self.StatusBits.ServoMode.value))
self.set_trait(
'isMoving',
bool(self._status & self.StatusBits.Moving.value)
or self.isReferencing)
if self.isMoving:
self.set_trait('status', self.Status.Moving)
else:
self.set_trait('status', self.Status.Idle)
if not movFut.done() and not self.isMoving:
movFut.set_result(None)
async def singleUpdate(self):
val = IselStage.cdll.stagedriver_current_position(self.handle)
self.set_trait('value', Q_(val, 'microm'))
self._updateDigitalInputFlags()
self._updateStatusWord()
self._updateErrorByte()
hm = bool(IselStage.cdll.stagedriver_homing_complete(self.handle))
tr = bool(IselStage.cdll.stagedriver_target_reached(self.handle))
mv = bool(IselStage.cdll.stagedriver_movement_active(self.handle))
self.set_trait('homingComplete', hm)
self.set_trait('isOnTarget', tr)
self.set_trait('isMoving', mv)
if not self.isMoving:
self.set_trait('status', self.Status.Idle)
if not self._isMovingFuture.done():
self._isMovingFuture.set_result(None)
else:
self.set_trait('status', self.Status.Moving)
self._isOpen = bool(IselStage.cdll.stagedriver_is_open(self.handle))
if not self._isOpen:
logging.info('Connection To IselStage at ' + self.comport +
' Lost')
class ThorlabsPM100(DataSource):
power = Quantity(Q_(0, 'mW'), read_only=True).tag(name='Power')
def __init__(self, resource=None, objectName=None, loop=None):
super().__init__(objectName, loop)
self._lock = Lock()
self.resource = resource
async def __aenter__(self):
await super().__aenter__()
self._continuousUpdateFut = \
ensure_weakly_binding_future(self._continuousRead)
return self
async def __aexit__(self, *args):
await super().__aexit__(*args)
self._continuousUpdateFut.cancel()
async def _continuousRead(self):
while True:
await self.readDataSet()
await asyncio.sleep(0.1)
@threaded_async
def _guardedRead(self):
with self._lock:
return float(self.resource.ask('READ?'))
async def readDataSet(self):
val = await self._guardedRead() * 1000
dset = DataSet(Q_(np.array(val), 'mW'))
self.set_trait('power', Q_(val, 'mW'))
self._dataSetReady(dset)
async def readAllParameters(self):
self._traitChangesDueToStatusUpdate = True
for name, trait in self.traits().items():
command = trait.metadata.get('command')
if command is None:
continue
else:
auxs = ''
if command.find('AUX') >= 0:
auxs = ' ' + name[-1]
result = await self.query(command + '?' + auxs)
if isinstance(trait, traitlets.Enum):
val = int(result)
val = [item for item in trait.values if item.value == val][0]
elif isinstance(trait, Quantity):
val = Q_(float(result), trait.default_value.units)
elif isinstance(trait, traitlets.Integer):
val = int(result)
self.set_trait(name, val)
self._traitChangesDueToStatusUpdate = False
logging.info('SR830: Lockin-Parameter read')
async def getVelocity(self):
#seems not to work ?
#vel = self.send(str(self.axis) + 'R4000074010')[4:]
vel = await self.connection.send(self.axis + b'R4000004040')
vel = vel[4:]
vel = Q_(int(vel, 16) / 300.0 * self._leadpitch, 'mm/s')
return vel
async def readAllParameters(self):
"""
Reads all parameters from the device and updates the attributes of this class accordingly.
"""
self._traitChangesDueToStatusUpdate = True
for name, trait in self.traits().items():
command = trait.metadata.get('command')
if command is None:
continue
else:
answer = await self.query(command)
if len(answer) == 1:
result = answer[0]
else:
result = answer
if isinstance(trait, traitlets.Enum):
if len(answer) == 1:
val = int(result)
val = [item for item in trait.values
if item.value == val][0]
else:
res = []
for i in answer:
ival = int(i)
res.append(ival)
# if first element is 0, (like [0, 1]) then LF is off
if res[0] != 0:
val = [
item for item in trait.values if item.value == res
][0]
else:
val = list(trait.values)[0]
elif isinstance(trait, Quantity):
val = Q_(float(result), trait.default_value.units)
elif isinstance(trait, traitlets.Int):
val = int(result)
elif isinstance(trait, traitlets.Bool):
result_int = 0
try:
result_int = int(result)
except ValueError:
print('Failed to read answer from ' + command +
" answer was " + str(result))
logging.info('Failed to read answer from ' + command +
" answer was " + str(result))
val = True if result_int == 1 else False
else:
val = result
self.set_trait(name, val)
self._traitChangesDueToStatusUpdate = False
logging.info('SR7230: Lockin-Parameter read')
def __init__(self, port, baud=9600, axis=0, objectName=None, loop=None):
super().__init__(objectName=objectName, loop=loop)
self.comm_lock = Lock()
self.comm = TMCLCommunicator(port, 1, 4, 0, float('inf'), float('inf'),
float('inf'))
self.comm._ser.baudrate = baud
self.axis = axis
self.setPreferredUnits(ureg.deg, ureg.dimensionless)
self.velocity = Q_(20)
self.set_trait('value', Q_(0, 'deg'))
self.set_trait('status', self.Status.Idle)
self._isMovingFuture = asyncio.Future()
self._isMovingFuture.set_result(None)
def _handleNewDataSet(self):
read = mx.int32()
buf = np.zeros((self.dataPoints, ))
self.currentTask.ReadAnalogF64(
mx.DAQmx_Val_Auto,
0, # timeout
mx.DAQmx_Val_GroupByScanNumber,
buf,
buf.size,
mx.byref(read),
None)
dset = DataSet(Q_(buf, 'V'), [self._axis.copy()])
self._currentFuture.set_result(dset)
self.set_trait('dataSet', dset)
cur = time.perf_counter()
rate = 1.0 / (cur - self._lastTime)
self.set_trait('dataRate', Q_(rate, 'Hz'))
self._loop.create_task(self.stop())
return 0
async def _singleUpdate(self):
stepPos = await self._get_param(1)
self.set_trait('value', Q_(self._steps2angle(stepPos), 'deg'))
movFut = self._isMovingFuture
if not movFut.done():
# check for target reached
reached = await self._get_param(8)
if reached and not movFut.done():
movFut.set_result(None)
def __init__(self, objectName=None, loop=None):
super().__init__(objectName='Goniometer Scan', loop=loop)
self.dataSaver = DataSaver(objectName="Data Saver")
self.pi_conn = PI.Connection(PI_Comport)
pi_stage = PI.AxisAtController(self.pi_conn)
pi_stage.objectName = "PI C-863"
pi_stage.setPreferredUnits(ureg.ps, ureg.ps / ureg.s)
self.manipulator = pi_stage
self.dataSource = SR830(rm.open_resource(SR800_Port))
self.dataSource.objectName = "SR830"
self.continuousScan = True
self.minimumValue = Q_(1180, 'ps')
self.maximumValue = Q_(1250, 'ps')
self.overscan = Q_(3, 'ps')
self.step = Q_(0.05, 'ps')
self.positioningVelocity = Q_(30, 'ps/s')
self.scanVelocity = Q_(1, 'ps/s')
self.dataSaver.fileNameTemplate = '{date}-{name}'
self.addDataSetReadyCallback(self.dataSaver.process)
self._backAndForth = True
async def configureTrigger(self, axis, triggerId=1):
axis = axis.to('mm').magnitude
step = np.mean(np.diff(axis))
start = axis[0]
N = len(axis)
# let the trigger output end half a step after the last position
stop = start + (N - 1) * step + step / 2
# enable trig output on axis
await self.send(b"CTO", triggerId, 2, self.axis, includeAxis=False)
# set trig output to pos+offset mode
await self.send(b"CTO", triggerId, 3, 7, includeAxis=False)
# set trig distance to ``step``
await self.send(b"CTO", triggerId, 1, step, includeAxis=False)
# trigger start position
await self.send(b"CTO", triggerId, 10, start, includeAxis=False)
# trigger stop position
await self.send(b"CTO", triggerId, 9, stop, includeAxis=False)
# enable trigger output
await self.send(b"TRO", triggerId, 1, includeAxis=False)
# ask for the actually set start, stop and step parameters
self._trigStep = Q_(
await self.send(b"CTO?", triggerId, 1, includeAxis=False), 'mm')
self._trigStart = Q_(
await self.send(b"CTO?", triggerId, 10, includeAxis=False), 'mm')
self._trigStop = Q_(
await self.send(b"CTO?", triggerId, 9, includeAxis=False), 'mm')
return np.arange(self._trigStart.magnitude, self._trigStop.magnitude,
self._trigStep.magnitude) * ureg.mm
async def statusUpdate(self):
"""
Performs a status update and updates the class attributes according to answers from the device.
"""
if self.status != Manipulator.Status.Moving and self.status != Manipulator.Status.Error: # and not self.stopped:
currentPosition = (await self.query("@0P"))[0]
# print("pos answer: " + str(currentPosition))
currentPosition = int(currentPosition, 16)
self.set_trait('value', Q_(currentPosition / self.stepsPerRev,
'cm'))
self._isMovingFuture.set_result(None)
async def singleUpdate(self):
movFut = self._isMovingFuture
self._status = await self._raw.nst(type=int)
self.set_trait('value', Q_(await self._raw.np(type=float), 'mm'))
self.set_trait('numberParamStack', await
self._raw.gsp(includeAxis=False, type=int))
self.set_trait(
'status', self.Status.Moving
if bool(self._status
& self.StatusBits.AxisMoving.value) else self.Status.Idle)
if self.status != self.Status.Moving and not movFut.done():
movFut.set_result(None)
async def __aenter__(self):
await super().__aenter__()
self._identification = await self.send(b'*IDN?', includeAxis=False)
self._hardwareMinimum = await self.send(b'TMN?')
self._hardwareMaximum = await self.send(b'TMX?')
self.velocity = Q_(await self.send(b'VEL?'), 'mm/s')
self._isReferenced = bool(await self.send(b'FRF?'))
await self.send("RON", 1)
await self.send("SVO", 1)
self._updateFuture = ensure_weakly_binding_future(self.updateStatus)
return self
async def setVelocity(self, velocity=Q_(10, 'mm/s'), acceleration=0.1):
velocity = int(velocity.to('mm/s').magnitude * 300 / self._leadpitch)
velocity = b'%04X' % velocity
if len(velocity) > 4:
logging.info('IAI {}: velocity too high'.format(self.axis))
velocity = b'02EE'
acceleration = int(acceleration * 5883.99 / self._leadpitch)
acceleration = b'%04X' % acceleration
if len(acceleration) > 4:
logging.info('IAI {}: acceleration too high'.format(self.axis))
acceleration = b'0093'
sendstr = self.axis + b'v2' + velocity + acceleration + b'0'
await self.connection.send(sendstr)
async def run():
transport, hydra = await loop.create_connection(
Hydra, 'localhost', 4000)
async with hydra:
print("Moving to start...")
await hydra.moveTo(Q_(20, 'mm'), Q_(10, 'mm/s'))
await hydra.configureTrigger(Q_(0.05, 'mm'), Q_(21, 'mm'),
Q_(29, 'mm'))
print("Moving to end...")
fut = loop.create_task(hydra.moveTo(Q_(30, 'mm'), Q_(5, 'mm/s')))
while not fut.done():
print("Position:", hydra.value)
await asyncio.sleep(0.5)
print("Done.")
async def reference(self):
if self.isMoving:
logging.info('{} {}: Please finish'.format(self, self.axis) +
'movement before searching Limit Switch')
return False
self._setSpeedProfile(Q_(5, 'deg/s'))
self.cdll.SetRunFreeFrq(self.axis, 100)
self.cdll.SetRunFreeSteps(self.axis, 32000)
self.cdll.SearchLS(self.axis, ord('-'))
self._isMovingFuture = asyncio.Future()
await self._isMovingFuture
self.cdll.FindLS(self.axis, ord('-'))
self.cdll.RunLSFree(self.axis, ord('-'))
self._isMovingFuture = asyncio.Future()
await self._isMovingFuture
self.cdll.SetPosition(self.axis, 0)
def __init__(self, axis=0, encoderMode=EncoderMode.A_BSignal4fold,
objectName=None, loop=None):
super().__init__(objectName, loop)
self.setPreferredUnits(ureg.deg, ureg.deg / ureg.s)
if Goniometer.connection is None:
Goniometer.connection = GonioConn()
self.cdll = Goniometer.connection.dll
self.axis = axis
self.cdll.InitEncoder(self.axis, encoderMode.value)
self.cdll.SetEncoder(self.axis, 0)
self.cdll.SetRunFreeFrq(self.axis, 100)
self.cdll.SetRunFreeSteps(self.axis, 32000)
# don't know if important
self.cdll.SetPosition(self.axis, 0)
self.set_trait('value', self._stepToDeg(
self.cdll.GetPosition(self.axis)))
self.velocity = Q_(5, 'deg/s')
self._statusRefresh = 0.1
self._isMovingFuture = asyncio.Future()
self._isMovingFuture.set_result(None)
self._updateFuture = ensure_weakly_binding_future(self.updateStatus)
async def run(loop):
async with Goniometer(1, objectName='Detektor') as detector:
async with Goniometer(0, objectName='Emitter') as emitter:
async with TimeDomainScan(loop=loop) as tdscan:
detector.calibrate(Q_(180.0, 'deg'))
emitter.calibrate(Q_(180.0, 'deg'))
for angle in np.arange(10, 80, 1):
emitterpos = 90 + angle
detectorpos = 270 - angle
await asyncio.wait([
detector.moveTo(Q_(detectorpos, 'deg')),
emitter.moveTo(Q_(emitterpos, 'deg'))
])
print('angle: {}'.format(angle))
tdscan.dataSaver.mainFileName = 'Referenz-{}'.format(angle)
await tdscan.readDataSet()
await asyncio.wait([
detector.moveTo(Q_(180, 'deg')),
emitter.moveTo(Q_(180, 'deg'))
])
class IselIT116(Manipulator):
class AxisDirection(enum.Enum):
Normal = 0
Inverse = 1
class ReferenceDirection(enum.Enum):
Normal = 0
Inverse = 1
class LimitSwitch1(enum.Enum):
Disabled = 0
Enabled = 1
class LimitSwitch2(enum.Enum):
Disabled = 0
Enabled = 1
class ActiveLevelLimitSwitch1(enum.Enum):
LowActive = 0
HighActive = 1
class ActiveLevelLimitSwitch2(enum.Enum):
LowActive = 0
HighActive = 1
DEFAULT_TIMEOUT = 1000
MOVEMENT_TIMEOUT = 100000
STATUS_UPDATE_RATE = 3
# Instrument Info Traitlets
controlUnitInfo = traitlets.Unicode(read_only=True,
name="Control Unit Info",
group="Instrument Info")
# Parameters
# Todo: find correct default value
referenceSpeed = traitlets.Int(name="Reference Speed",
group="Parameters",
default_value=900,
max=2500,
command="@0d")
acceleration = Quantity(name="Acceleration",
group="Parameters",
default_value=Q_(100, "Hz/ms"),
min=Q_(1, "Hz/ms"),
max=Q_(1000, "Hz/ms"),
command="@0g")
startStopFrequency = Quantity(name="Start Stop Frequency",
group="Parameters",
default_value=Q_(300, "Hz"),
min=Q_(20, "Hz"),
max=Q_(40000, "Hz"),
command="@0j")
axisDirection = traitlets.Enum(AxisDirection,
name="Axis Direction",
group="Parameters",
default_value=AxisDirection.Normal,
command="@0ID")
referenceDirection = traitlets.Enum(
ReferenceDirection,
name="Reference Direction",
group="Parameters",
default_value=ReferenceDirection.Normal)
# Relative Movement
relativeMovementPath = traitlets.Int(name="Movement Path",
group="Relative Movement",
default_value=0)
relativeMovementSpeed = traitlets.Int(name="Speed",
group="Relative Movement",
default_value=900)
# Absolute Movement
absoluteMovementPosition = traitlets.Int(name="Target Position",
group="Absolute Movement",
default_value=0)
absoluteMovementSpeed = traitlets.Int(name="Speed",
group="Absolute Movement",
default_value=900)
stopped = traitlets.Bool(name="Stopped",
default_value=False,
read_only=True)
parameterTraits = [
"referenceSpeed", "acceleration", "startStopFrequency",
"axisDirection", "referenceDirection"
]
def __init__(self,
comport,
baudRate=19200,
stepsPerRev=800,
objectName=None,
loop=None):
"""
Parameters
----------
"""
super().__init__(objectName, loop)
self._lock = Lock()
self.comport = comport
self.stepsPerRev = 2 * stepsPerRev # not sure if correct (@0P gives correct distance)
if os.name == 'posix':
rm = visa.ResourceManager('@py')
elif os.name == 'nt':
rm = visa.ResourceManager()
try:
self.resource = rm.open_resource(comport)
except visa.errors.VisaIOError:
raise Exception('Failed to open Isel IT116 stage at comport: ' +
comport)
self.resource.read_termination = ''
self.resource.write_termination = chr(13) # CR
self.resource.baud_rate = baudRate
self.resource.timeout = self.DEFAULT_TIMEOUT
self.setPreferredUnits(ureg.mm, ureg.mm / ureg.s)
self.observe(self.setParameterOnDevice, self.parameterTraits)
self.set_trait('status', self.Status.Idle)
self._isMovingFuture = asyncio.Future()
self._isMovingFuture.set_result(None)
async def __aenter__(self):
await super().__aenter__()
await self.initializeControlUnit()
await self.getControlUnitInfo()
await self.statusUpdate()
self._statusUpdateFuture = ensure_weakly_binding_future(
self.continuousStatusUpdate)
return self
async def __aexit__(self, *args):
await super().__aexit__(*args)
self._statusUpdateFuture.cancel()
@action("Stop")
def stop(self):
self.resource.write_raw(bytes([253]))
asyncio.ensure_future(self.stopImplementation())
async def stopImplementation(self):
result = await self.read()
self.set_trait("stopped", True)
if result is None:
return
result = result[0:-2]
if result == "STOP":
self.set_trait("stopped", False)
if not self._isMovingFuture.done():
self._isMovingFuture.cancel()
@action("Start")
async def start(self):
"""
Sends a start command to the device after it has been stopped.
Due to weird behavior of the device, this function first executes a break command causing the device to forget
the last movement command.
"""
await self.softwareBreak()
result = (await self.query("@0S"))[0]
print("start result: " + result)
if result == "0" or result == "G":
self.set_trait("stopped", False)
# await asyncio.sleep(0.1)
await self.read()
self.set_trait("status", self.Status.Idle)
@action("Break")
async def softwareBreak(self):
self.resource.write_raw(bytes([255]))
await self.read()
@action("Software Reset")
async def softwareReset(self):
self.resource.write_raw(bytes([254]))
await self.read()
@action("Load Parameters from Flash", group="Parameters")
async def loadParametersFromFlash(self):
await self.write("@0IL")
@action("Save Parameters to Flash", group="Parameters")
async def saveParametersToFlash(self):
await self.write("@0IW")
@action("Load Default Parameters", group="Parameters")
async def loadDefaultParameters(self):
await self.write("@0IX")
@action("Reference Run")
async def referenceRun(self):
await self.executeMovementCommand("@0R1")
@action("Simulate Reference Run")
async def simulateReferenceRun(self):
await self.write("@0N1")
@action("Set Zero Point")
async def setZeroPointCurrentLocation(self):
await self.write("@0n1")
@action("Move", group="Absolute Movement")
async def moveAbsolute(self):
await self.moveTo(self.absoluteMovementPosition,
self.absoluteMovementSpeed)
@action("Move", group="Relative Movement")
async def moveRelative(self):
command = "@0A" + str(self.relativeMovementPath) + "," + str(
self.relativeMovementSpeed)
await self.executeMovementCommand(command)
@threaded_async
def query(self, command, timeout=None):
"""
Sends a command to the device and reads the answer.
Parameters
----------
command : str
The command to send to the device.
timeout : int
Custom timeout in ms.
Returns
-------
list
A list of answer strings from the device.
"""
with self._lock:
# remove parameter placeholders from command
paramIndex = command.find(" {}")
if paramIndex != -1:
command = command[:paramIndex]
print('IselIT116: query ' + str(command))
logging.info('{}: {}'.format(self, command))
if timeout is not None:
prevTimeout = self.resource.timeout
self.resource.timeout = timeout
self.resource.write(command)
answerBytes = self.readAllBytes()
answerString = b''.join(answerBytes).decode("utf-8")
print('IselIT116: answer: ' + answerString)
if timeout is not None:
self.resource.timeout = prevTimeout
result = []
for s in str.split(answerString, ','):
result.append(s)
return result
@threaded_async
def write(self, command, lock=True):
"""
Sends a command to the device.
Parameters
----------
command : str
The command to send to the device.
lock : bool
Use the lock if true. Prevents simultaneous access on the instrument.
"""
logging.info('{}: {}'.format(self, command))
if lock:
with self._lock:
self.resource.write(command)
self.readAllBytes()
else:
self.resource.write(command)
self.readAllBytes()
@threaded_async
def read(self):
"""
Reads the current content of the receive buffer
Returns
-------
result : str
The read content of the receive buffer.
"""
with self._lock:
readBytes = self.readAllBytes()
if len(readBytes) > 0:
result = b''.join(readBytes).decode("utf-8")
print("read(): result: " + result)
return result
def readAllBytes(self):
"""
Reads all bytes from the receive buffer.
Returns
-------
allBytes : list
All bytes read from the receive buffer.
"""
time.sleep(
0.05
) # self.resource.bytes_in_buffer gives wrong result if called right after write
allBytes = []
try:
allBytes.append(self.resource.read_bytes(1))
except:
print("readAllBytes: no bytes in buffer")
while self.resource.bytes_in_buffer > 0:
allBytes.append(self.resource.read_bytes(1))
# some commands return "0" "handshake" before actual value
# this is probably the wrong way to handle it
if (allBytes[0] == b'0' and len(allBytes) != 1):
allBytes = allBytes[1:]
return allBytes
def setParameterOnDevice(self, change):
"""
Sets parameter on the device.
This is the function that is called by all traits that get observed. Tries to update the changed attribute on
the device by sending the corresponding command.
Parameters
----------
change : list
change object of the observed trait.
"""
trait = self.traits().get(change['name'])
command = trait.metadata.get('command')
value = change['new']
if command is None:
return
self.set_trait(trait.name, value)
if isinstance(value, enum.Enum):
value = value.value
elif isinstance(value, Q_):
value = value.magnitude
elif isinstance(value, bool):
value = 1 if value else 0
commandString = str()
paramIndex = command.find("{}")
if paramIndex == -1:
commandString = command + '{}'.format(value)
elif command.find("{},{}") != -1:
commandString = command.format(value[0], value[1])
elif paramIndex != -1:
commandString = command.format(value)
asyncio.ensure_future(self.write(commandString))
async def continuousStatusUpdate(self):
"""
Requests a status update every STATUS_UPDATE_RATE seconds.
"""
while True:
await asyncio.sleep(self.STATUS_UPDATE_RATE)
await self.statusUpdate()
async def statusUpdate(self):
"""
Performs a status update and updates the class attributes according to answers from the device.
"""
if self.status != Manipulator.Status.Moving and self.status != Manipulator.Status.Error: # and not self.stopped:
currentPosition = (await self.query("@0P"))[0]
# print("pos answer: " + str(currentPosition))
currentPosition = int(currentPosition, 16)
self.set_trait('value', Q_(currentPosition / self.stepsPerRev,
'cm'))
self._isMovingFuture.set_result(None)
async def initializeControlUnit(self):
"""
Initialisation, setting number of axes.
"""
await self.write("@01")
async def getControlUnitInfo(self):
"""
Queries info of the control unit.
"""
info = await self.query("@0V")
info = info[0]
self.set_trait("controlUnitInfo", info[0:-2])
async def moveTo(self, val: float, velocity=None):
if self.stopped:
print("Device is stopped. Can't process commands until started")
return
self.__blockTargetValueUpdate = True
if velocity is None:
velocity = self.velocity
if not isinstance(val, int) and not isinstance(val, float):
val = val.to("cm").magnitude
val *= self.stepsPerRev
val = int(val)
if not isinstance(velocity, int) and not isinstance(velocity, float):
velocity = velocity.to('cm/s').magnitude
velocity *= 1600 # self.stepsPerRev ?
velocity = int(velocity)
# print("speed: " + str(velocity))
command = "@0M" + str(val) + "," + str(velocity)
await self.executeMovementCommand(command)
self.__blockTargetValueUpdate = False
async def executeMovementCommand(self, command):
"""
Sends a command to the instrument that results in a movement of the axis.
Since the IT116 can't process any other commands until the movement is completed, this function waits for the
device's response that the movement was completed. Also sets the status to moving while the stage is moving.
Parameters
----------
command : str
Movement command to send to the device.
"""
self.set_trait("status", self.Status.Moving)
result = (await self.query(command, self.MOVEMENT_TIMEOUT))[0]
self._isMovingFuture = asyncio.Future()
print("movement result: " + result)
if result == "0":
self.set_trait("status", self.Status.Idle)
await self.statusUpdate()
elif result == "F":
print("movement stopped")
logging.info('{}: {}'.format(self,
"movement stopped. Press start"))
self.set_trait("status", self.Status.Error)
else:
self.set_trait("status", self.Status.Error)
async def waitForTargetReached(self):
return await self._isMovingFuture
class SR7230(DataSource):
"""
Implementation of the Lock-In SR7230 as a DataSource
This class implements the Lock-In Amplifier SR7230 as a DataSource using PyVisa for the connection to the device.
Most attributes of this class represent attributes of the device. Refer to the official manual of the SR7230 for
more details.
"""
class SamplingMode(enum.Enum):
SingleShot = 0
Buffered = 1
# Signal Channel
class InputMode(enum.Enum):
VoltageInputMode = 0
CurrentModeHighBandwidth = 1
CurrentModeLowNoise = 2
class VoltageInputMode(enum.Enum):
BothInputsGrounded = 0
AInputOnly = 1
BInputOnly = 2
ABDifferentialMode = 3
class InputConnectorShieldControl(enum.Enum):
Ground = 0
Float = 1
class InputDevice(enum.Enum):
Bipolar = 0
FET = 1
class InputCoupling(enum.Enum):
AC = 0
DC = 1
class SensitivityIMode0(enum.Enum):
Sens_10nV = 3
Sens_20nV = 4
Sens_50nV = 5
Sens_100nV = 6
Sens_200nV = 7
Sens_500nV = 8
Sens_1muV = 9
Sens_2muV = 10
Sens_5muV = 11
Sens_10muV = 12
Sens_20muV = 13
Sens_50muV = 14
Sens_100muV = 15
Sens_200muV = 16
Sens_500muV = 17
Sens_1mV = 18
Sens_2mV = 19
Sens_5mV = 20
Sens_10mV = 21
Sens_20mV = 22
Sens_50mV = 23
Sens_100mV = 24
Sens_200mV = 25
Sens_500mV = 26
Sens_1V = 27
class ACGain(enum.Enum):
Gain_0dB = 0
Gain_6dB = 1
Gain_12dB = 2
Gain_18dB = 3
Gain_24dB = 4
Gain_30dB = 5
Gain_36dB = 6
Gain_42dB = 7
Gain_48dB = 8
Gain_54dB = 9
Gain_60dB = 10
Gain_66dB = 11
Gain_72dB = 12
Gain_78dB = 13
Gain_84dB = 14
Gain_90dB = 15
class ACGainControl(enum.Enum):
Manual = 0
Automatic = 1
class NotchFilter(enum.Enum):
Off = [0, 0]
NotchFilter_50Hz = [1, 0]
NotchFilter_60Hz = [1, 1]
NotchFilter_100Hz = [2, 0]
NotchFilter_120Hz = [2, 1]
NotchFilter_50Hz_100Hz = [3, 0]
NotchFilter_60Hz_120Hz = [3, 1]
class NotchFilters(enum.Enum):
Off = 0
NotchFilter50or60Hz = 1
NotchFilter100or120Hz = 2
Both = 3
class NotchFilterCenterFrequencies(enum.Enum):
Freq_60_120_Hz = 0
Freq_50_100_Hz = 1
# Reference Channel
class ReferenceMode(enum.Enum):
SingleReference = 0
DualHarmonic = 1
DualReference = 2
class ReferenceSource(enum.Enum):
Internal = 0
ExternalTTL = 1
ExternalAnalog = 2
class ReferenceChannelSelection(enum.Enum):
CH1_Internal_CH2_External = 0
CH2_Internal_CH1_External = 1
class ReferenceMonitorControl(enum.Enum):
TrigOutByCurveBuffer = 0
TrigOutTTLAtReferenceFreq = 1
# Signal Channel Output Filters
class FilterTimeConstant(enum.Enum):
TimeConstant_10mus = 0
TimeConstant_20mus = 1
TimeConstant_50mus = 2
TimeConstant_100mus = 3
TimeConstant_200mus = 4
TimeConstant_500mus = 5
TimeConstant_1ms = 6
TimeConstant_2ms = 7
TimeConstant_5ms = 8
TimeConstant_10ms = 9
TimeConstant_20ms = 10
TimeConstant_50ms = 11
TimeConstant_100ms = 12
TimeConstant_200ms = 13
TimeConstant_500ms = 14
TimeConstant_1s = 15
TimeConstant_2s = 16
TimeConstant_5s = 17
TimeConstant_10s = 18
TimeConstant_20s = 19
TimeConstant_50s = 20
TimeConstant_100s = 21
TimeConstant_200s = 22
TimeConstant_500s = 23
TimeConstant_1ks = 24
TimeConstant_2ks = 25
TimeConstant_5ks = 26
TimeConstant_10ks = 27
TimeConstant_20ks = 28
TimeConstant_50ks = 29
TimeConstant_100ks = 30
class LowPassFilterSlope(enum.Enum):
FilterSlope_6db_octave = 0
FilterSlope_12db_octave = 1
FilterSlope_18db_octave = 2
FilterSlope_24db_octave = 3
# Curve Buffer
class CurveBufferMode(enum.Enum):
Standard = 0
Fast = 1
class CurveBufferTriggerOutput(enum.Enum):
PerCurve = 0
PerPoint = 1
class CurveBufferTriggerOutputPolarity(enum.Enum):
RisingEdge = 0
FallingEdge = 1
class TakeDataMode(enum.Enum):
TakeData = 0
TakeDataTriggered = 1
TakeDataContinuously = 2
class TakeDataTriggeredTriggerMode(enum.Enum):
Start_ExtRising_Sample_NA_Stop_LEN = 0
Start_Cmd_Sample_ExtRising_Stop_LEN = 1
Start_ExtFalling_Sample_NA_Stop_LEN = 2
Start_Cmd_Sample_ExtFalling_Stop_LEN = 3
Start_ExtRising_Sample_NA_Stop_Cmd = 4
Start_Cmd_Sample_ExtRising_Stop_Cmd = 5
Start_ExtFalling_Sample_NA_Stop_Cmd = 6
Start_Cmd_Sample_ExtFalling_Stop_Cmd = 7
Start_ExtRising_Sample_NA_Stop_ExtFalling = 8
Start_ExtFalling_Sample_NA_Stop_ExtRising = 9
class StatusBits(enum.Enum):
CommandComplete = 0x1
InvalidCommand = 0x2
CommandParameterError = 0x4
ReferenceUnlock = 0x8
OutputOverload = 0x10
NewADCValues = 0x20
InputOverload = 0x40
DataAvailable = 0x80
class OverloadBits(enum.Enum):
X = 0x1
Y = 0x2
X2 = 0x4
Y2 = 0x8
CH1 = 0x10
CH2 = 0x20
CH3 = 0x40
CH4 = 0x80
class CurveAcquisitionStatusInts(enum.Enum):
NoCurveActivity = 0
AcquisitionTD = 1
AcquisitionTDC = 2
AcquisitionHaltedTD = 5
AcquisitionHaltedTDC = 6
statusMessages = {
'overload': {
0x1: 'X channel output overload',
0x2: 'Y channel output overload',
0x4: 'X2 channel output overload',
0x8: 'Y2 channel output overload',
0x10: 'CH1 channel output overload',
0x20: 'CH2 channel output overload',
0x40: 'CH3 channel output overload',
0x80: 'CH4 channel output overload'
}
}
STATUS_UPDATE_RATE = 5
# Instrument Info Traitlets
identification = traitlets.Unicode(read_only=True,
name="Identification",
group="Instrument Info")
instrumentName = traitlets.Unicode(name="Instrument Name",
group="Instrument Info",
command="NAME")
firmwareVersion = traitlets.Unicode(read_only=True,
name="Firmware Version",
group="Instrument Info")
# General Traitlets Traitlets
samplingMode = traitlets.Enum(
SamplingMode, SamplingMode.Buffered).tag(name="Sampling mode")
# Signal Channel Traitlets
inputMode = traitlets.Enum(InputMode,
default_value=InputMode.VoltageInputMode).tag(
group="Signal Channel", command="IMODE")
voltageInputMode = traitlets.Enum(VoltageInputMode).tag(
group="Signal Channel", command="VMODE")
inputConnectorShieldControl = traitlets.Enum(InputConnectorShieldControl,
default_value=InputConnectorShieldControl.Ground) \
.tag(group="Signal Channel", command="FLOAT")
inputDevice = traitlets.Enum(
InputDevice, default_value=InputDevice.FET).tag(group="Signal Channel",
command="FET")
inputCoupling = traitlets.Enum(InputCoupling,
default_value=InputCoupling.AC).tag(
group="Signal Channel",
command="DCCOUPLE")
sensitivity = traitlets.Enum(
SensitivityIMode0,
default_value=SensitivityIMode0.Sens_200mV).tag(group="Signal Channel",
command="SEN")
acGain = traitlets.Enum(ACGain, default_value=ACGain.Gain_0dB).tag(
group="Signal Channel", command="ACGAIN")
acAutomaticGainControl = traitlets.Bool(default_value=False,
group="Signal Channel",
command="AUTOMATIC")
notchFilter = traitlets.Enum(NotchFilter,
default_value=NotchFilter.Off,
group="Signal Channel",
command="LF {} {}")
# Reference Channel Traitlets
referenceMode = traitlets.Enum(ReferenceMode,
default_value=ReferenceMode.SingleReference,
group="Reference Channel",
command="REFMODE")
referenceSource = traitlets.Enum(ReferenceSource,
default_value=ReferenceSource.Internal,
group="Reference Channel",
command="IE")
referenceChannelSelection = traitlets.Enum(ReferenceChannelSelection,
group="Reference Channel",
command="INT")
referenceHarmonicMode = traitlets.Int(default_value=1,
min=1,
max=127,
group="Reference Channel",
command="REFN")
referenceMonitorControl = traitlets.Enum(ReferenceMonitorControl,
group="Reference Channel",
command="REFMON")
referencePhase = Quantity(default_value=Q_(0, "mdeg"),
min=Q_(-360000, "mdeg"),
max=Q_(360000, "mdeg"))
referencePhase.tag(group="Reference Channel", command="REFP")
referenceFrequencyMeter = Quantity(default_value=Q_(0, 'mHz'),
read_only=True)
referenceFrequencyMeter.tag(group="Reference Channel", command="FRQ")
enterVirtualReferenceMode = traitlets.Bool(group="Reference Channel",
command="VRLOCK")
# Signal Channel Output Filters
noiseMode = traitlets.Bool(default_value=False,
read_only=True,
group="Signal Channel Output Filters",
command="NOISEMODE")
fastMode = traitlets.Bool(default_value=True,
read_only=False,
group="Signal Channel Output Filters",
command="FASTMODE")
filterTimeConstant = traitlets.Enum(FilterTimeConstant,
group="Signal Channel Output Filters",
command="TC")
synchronousTimeConstantControl = traitlets.Bool(
default_value=True,
group="Signal Channel Output Filters",
command="SYNC")
lowPassFilterSlope = traitlets.Enum(
LowPassFilterSlope,
default_value=LowPassFilterSlope.FilterSlope_12db_octave,
group="Signal Channel Output Filters",
command="SLOPE")
# Data Curve Buffer Traitlets
bufferMode = traitlets.Enum(CurveBufferMode,
default_value=CurveBufferMode.Standard,
read_only=True,
command="CMODE",
group="Data Curve Buffer")
bufferTriggerOutput = traitlets.Enum(CurveBufferTriggerOutput,
command="TRIGOUT",
group="Data Curve Buffer")
bufferTriggerOutputPolarity = traitlets.Enum(
CurveBufferTriggerOutputPolarity,
command="TRIGOUTPOL",
group="Data Curve Buffer")
storageTimeInterval = traitlets.Int(default_value=10).tag(
name="Storage Time Interval", command="STR", group="Data Curve Buffer")
bufferLength = traitlets.Int(default_value=100000).tag(
name="Buffer Length", command="LEN", group="Data Curve Buffer")
takeDataMode = traitlets.Enum(TakeDataMode,
TakeDataMode.TakeDataTriggered).tag(
name="Take Data Mode",
group="Data Curve Buffer")
takeDataTriggeredTriggerMode = traitlets.Enum(
TakeDataTriggeredTriggerMode,
default_value=TakeDataTriggeredTriggerMode.
Start_Cmd_Sample_ExtRising_Stop_Cmd,
group="Data Curve Buffer")
curveAcquisitionInProgressTD = traitlets.Bool(
default_value=False,
read_only=True).tag(name="Acquisition in Progress by TD",
group='Data Curve Buffer')
curveAcquisitionInProgressTDC = traitlets.Bool(
default_value=False,
read_only=True).tag(name="Continuous Acquisition in Progress",
group='Data Curve Buffer')
curveAcquisitionHaltedTD = traitlets.Bool(
default_value=False,
read_only=True).tag(name="Acquisition by TD Halted",
group='Data Curve Buffer')
curveAcquisitionHaltedTDC = traitlets.Bool(
default_value=False,
read_only=True).tag(name="Continuous Acquisition by TD Halted",
group='Data Curve Buffer')
pointsAcquired = traitlets.Int(default_value=0, read_only=True).tag(
name="Points Acquired", group='Data Curve Buffer')
# Status Traitlets
curveAcquisitionInProgress = traitlets.Bool(
default_value=False,
read_only=True).tag(name="Curve Acquisition in Progress",
group='Status')
commandComplete = traitlets.Bool(default_value=False, read_only=True).tag(
name="Command Complete", group="Status")
invalidCommand = traitlets.Bool(default_value=False,
read_only=True).tag(name="Invalid Command",
group="Status")
commandParameterError = traitlets.Bool(default_value=False,
read_only=True).tag(
name="Command Parameter Error",
group="Status")
referenceUnlock = traitlets.Bool(default_value=False, read_only=True).tag(
name="Reference Unlock", group="Status")
outputOverload = traitlets.Bool(default_value=False,
read_only=True).tag(name="Output Overload",
group="Status")
newADCValues = traitlets.Bool(default_value=False,
read_only=True).tag(name="New ADC Values",
group="Status")
inputOverload = traitlets.Bool(default_value=False,
read_only=True).tag(name="Input Overload",
group="Status")
dataAvailable = traitlets.Bool(default_value=False,
read_only=True).tag(name="Data Available",
group="Status")
def __init__(self, resource, ethernet=False):
"""
Parameters
----------
resource : Resource
PyVisa Resource object of the connected device.
ethernet : bool
Indicates if the connection to the device is an ethernet connection.
"""
super().__init__(objectName=None, loop=None)
self.resource = resource
self.ethernet = ethernet
self.resource.timeout = 1000
#self.resource.set_visa_attribute(pyvisa_consts.VI_ATTR_SUPPRESS_END_EN, pyvisa_consts.VI_FALSE)
if ethernet:
self.resource.read_termination = chr(0)
else:
self.resource.read_termination = ''
self.resource.write_termination = chr(0)
self.observe(self.setParameter, traitlets.All)
self._traitChangesDueToStatusUpdate = True
self._lock = Lock()
self._statusUpdateFuture = ensure_weakly_binding_future(
self.contStatusUpdate)
async def __aenter__(self):
await super().__aenter__()
self.set_trait("identification", (await self.query("ID"))[0])
self.set_trait("instrumentName", (await self.query("NAME"))[0])
self.set_trait("firmwareVersion", (await self.query("VER"))[0])
await self.readAllParameters()
await self.statusUpdate()
return self
async def __aexit__(self, *args):
await super().__aexit__(*args)
self._statusUpdateFuture.cancel()
@threaded_async
def query(self, command):
"""
Sends a command to the device and reads the answer.
Parameters
----------
command : str
The command to send to the device.
Returns
-------
list
a list of answer strings from the device.
"""
with self._lock:
# remove parameter placeholders from command
paramIndex = command.find(" {}")
if paramIndex != -1:
command = command[:paramIndex]
print('SR7230: query ' + str(command))
logging.info('{}: {}'.format(self, command))
answer = self.resource.query(command)
if self.ethernet:
self.resource.read_raw()
else:
end = answer.find(chr(0))
answer = answer[:end]
print('SR7230: answer: ' + answer)
result = []
for s in str.split(answer, ','):
result.append(s)
return result
@threaded_async
def write(self, command, lock=True):
"""
Sends a command to the device.
Parameters
----------
command : str
The command to send to the device.
"""
logging.info('{}: {}'.format(self, command))
if lock:
with self._lock:
ret = self.resource.query(command)
if self.ethernet:
self.resource.read_raw()
return ret
else:
ret = self.resource.query(command)
if self.ethernet:
self.resource.read_raw()
return ret
async def getCurveAcquisitionStatusMonitor(self):
"""
Gets the current curve acquisition status.
Returns
-------
list
a list of the curve acquisition status monitor values.
"""
answer = await self.query('M')
# if answer[-1] == '\n':
# answer = answer[:-1]
# result = []
# for s in str.split(answer, ','):
# result.append(int(s))
return answer
async def getNumberOfPointsAcquired(self):
"""
Gets the current number of acquired points from the device.
Returns
-------
int
the number of points acquired.
"""
result = await self.getCurveAcquisitionStatusMonitor()
return result[3]
@action("Start")
async def start(self):
print('start sr7230')
await self.write('NC') # new curve
await self.write('CBD 1') # select channel x
if self.takeDataMode == self.TakeDataMode.TakeData:
await self.write('TD')
elif self.takeDataMode == self.TakeDataMode.TakeDataContinuously:
await self.write('TDC 0')
elif self.takeDataMode == self.TakeDataMode.TakeDataTriggered:
await self.write("TDT {}".format(
self.takeDataTriggeredTriggerMode.value))
await self.statusUpdate()
@action("Stop")
async def stop(self):
print('stop sr7230')
await self.write('HC')
@action("Clear Buffer", group="Data Curve Buffer")
async def clear(self):
"""
Clears the buffer of the device.
"""
await self.write("NC")
async def readAllParameters(self):
"""
Reads all parameters from the device and updates the attributes of this class accordingly.
"""
self._traitChangesDueToStatusUpdate = True
for name, trait in self.traits().items():
command = trait.metadata.get('command')
if command is None:
continue
else:
answer = await self.query(command)
if len(answer) == 1:
result = answer[0]
else:
result = answer
if isinstance(trait, traitlets.Enum):
if len(answer) == 1:
val = int(result)
val = [item for item in trait.values
if item.value == val][0]
else:
res = []
for i in answer:
ival = int(i)
res.append(ival)
# if first element is 0, (like [0, 1]) then LF is off
if res[0] != 0:
val = [
item for item in trait.values if item.value == res
][0]
else:
val = list(trait.values)[0]
elif isinstance(trait, Quantity):
val = Q_(float(result), trait.default_value.units)
elif isinstance(trait, traitlets.Int):
val = int(result)
elif isinstance(trait, traitlets.Bool):
result_int = 0
try:
result_int = int(result)
except ValueError:
print('Failed to read answer from ' + command +
" answer was " + str(result))
logging.info('Failed to read answer from ' + command +
" answer was " + str(result))
val = True if result_int == 1 else False
else:
val = result
self.set_trait(name, val)
self._traitChangesDueToStatusUpdate = False
logging.info('SR7230: Lockin-Parameter read')
def setParameter(self, change):
"""
Sets parameter on the device.
This is the function that is called by all traits that get observed. Tries to update the changed attribute on
the device by sending the corresponding command.
Parameters
----------
change : list
change object of the observed trait.
"""
if self._traitChangesDueToStatusUpdate:
return
trait = self.traits().get(change['name'])
command = trait.metadata.get('command')
value = change['new']
if command is None:
return
self.set_trait(trait.name, value)
if isinstance(value, enum.Enum):
value = value.value
elif isinstance(value, Q_):
if 'REFP' in command:
value = int(value.magnitude)
else:
value = value.magnitude
elif isinstance(value, bool):
value = 1 if value else 0
commandString = str()
paramIndex = command.find(" {}")
if paramIndex == -1:
commandString = command + ' {}'.format(value)
elif command.find("{} {}") != -1:
commandString = command.format(value[0], value[1])
elif paramIndex != -1:
commandString = command.format(value)
asyncio.ensure_future(self.write(commandString))
# Auto Functions
@action('Readout Settings', group='Auto Functions')
def readSettings(self):
asyncio.ensure_future(self.readAllParameters())
@action('Auto Sensitivity', group='Auto Functions')
def autoSensitivity(self):
asyncio.ensure_future(self.write('AS'))
asyncio.ensure_future(self.readAllParameters())
@action('Auto Measure Operation', group='Auto Functions')
def autoMeasureOperation(self):
asyncio.ensure_future(self.write('ASM'))
asyncio.ensure_future(self.readAllParameters())
@action('Auto Phase', group='Auto Functions')
def autoPhase(self):
asyncio.ensure_future(self.write('AQN'))
asyncio.ensure_future(self.readAllParameters())
@action('Auto Offset', group='Auto Functions')
def autoOffset(self):
asyncio.ensure_future(self.write('AXO'))
asyncio.ensure_future(self.readAllParameters())
@action('Update Gain and Phase Correction Parameters',
group='Reference Channel')
def systemLockControl(self):
asyncio.ensure_future(self.write('LOCK'))
asyncio.ensure_future(self.readAllParameters())
async def contStatusUpdate(self):
"""
Requests a status update every STATUS_UPDATE_RATE seconds.
"""
while True:
await asyncio.sleep(self.STATUS_UPDATE_RATE)
await self.statusUpdate()
async def statusUpdate(self):
"""
Performs a status update and updates the class attributes according to answers from the device.
"""
curveAcquisitionStatusMonitor = await self.getCurveAcquisitionStatusMonitor(
)
try:
curveAcquisitionStatus = int(curveAcquisitionStatusMonitor[0])
except Exception as e:
logging.info(e)
await self.statusUpdate()
status = int(curveAcquisitionStatusMonitor[2])
self.set_trait(
"curveAcquisitionInProgressTD", curveAcquisitionStatus ==
SR7230.CurveAcquisitionStatusInts.AcquisitionTD.value)
self.set_trait(
"curveAcquisitionInProgressTDC", curveAcquisitionStatus ==
SR7230.CurveAcquisitionStatusInts.AcquisitionTDC.value)
self.set_trait(
"curveAcquisitionHaltedTD", curveAcquisitionStatus ==
SR7230.CurveAcquisitionStatusInts.AcquisitionHaltedTD.value)
self.set_trait(
"curveAcquisitionHaltedTDC", curveAcquisitionStatus ==
SR7230.CurveAcquisitionStatusInts.AcquisitionHaltedTDC.value)
self.set_trait("pointsAcquired", int(curveAcquisitionStatusMonitor[3]))
self.set_trait(
"curveAcquisitionInProgress", curveAcquisitionStatus !=
SR7230.CurveAcquisitionStatusInts.NoCurveActivity.value)
self.set_trait("commandComplete",
bool(status & SR7230.StatusBits.CommandComplete.value))
self.set_trait("invalidCommand",
bool(status & SR7230.StatusBits.InvalidCommand.value))
self.set_trait(
"commandParameterError",
bool(status & SR7230.StatusBits.CommandParameterError.value))
self.set_trait("referenceUnlock",
bool(status & SR7230.StatusBits.ReferenceUnlock.value))
self.set_trait("outputOverload",
bool(status & SR7230.StatusBits.OutputOverload.value))
self.set_trait("newADCValues",
bool(status & SR7230.StatusBits.NewADCValues.value))
self.set_trait("inputOverload",
bool(status & SR7230.StatusBits.InputOverload.value))
self.set_trait("dataAvailable",
bool(status & SR7230.StatusBits.DataAvailable.value))
if self.outputOverload:
overloadByte = await self.query("N")
logging.info(SR7230.statusMessages['overload'][overloadByte])
async def readCurrentOutput(self, channel='X'):
"""
Reads the current output of a channel from the device.
Parameters
----------
channel : str
the channel to read from.
Returns
-------
float
the current output.
"""
return float(await self.query(channel))
async def readDataBuffer(self):
"""
Reads the data buffer of the device
Returns
-------
list
a list of the read data points from the device's data buffer.
"""
numberOfPoints = await self.getNumberOfPointsAcquired()
print('number of points: ' + str(numberOfPoints))
if numberOfPoints == 0:
return []
data = await self.query('DC 0')
data = data[0]
result = []
for s in str.split(data, '\n'):
try:
dataPoint = float(s)
result.append(dataPoint)
except ValueError:
pass
return result
async def readDataSet(self):
if self.samplingMode == SR7230.SamplingMode.SingleShot:
data = np.array(await self.readCurrentOutput())
dataSet = DataSet(Q_(data), [])
self._dataSetReady(dataSet)
return dataSet
elif self.samplingMode == SR7230.SamplingMode.Buffered:
data = await self.readDataBuffer()
data = np.array(data)
dataSet = DataSet(Q_(data), [Q_(np.arange(0, len(data)))])
self._dataSetReady(dataSet)
return dataSet
def __init__(self, objectName=None, loop=None):
super().__init__(objectName="Y Scan", loop=loop)
self.title = "Taipan - Schweißgüte 2"
self.dataSaver = DataSaver(objectName="Data Saver")
self.tem_fs = TEMFiberStretcher(tem_serial1,
tem_serial2,
objectName="TEM FiberStretcher",
loop=loop)
self.tem_fs.rec_Start = Q_(4, 'ps')
self.tem_fs.rec_Stop = Q_(190, 'ps')
self.tem_fs_av = AverageDataSource(self.tem_fs, objectName="Averager")
"""
self.manipulatorX = IselStage(monsterstage_x,
objectName="Manipulator x",
loop=loop)
"""
self.manipulatorX = DummyManipulator()
"""
self.manipulatorY = IselStage(monsterstage_y,
objectName="Manipulator y",
loop=loop)
"""
self.manipulatorY = DummyManipulator()
#define the x scan
self.scanx = Scan(self.manipulatorX, self.tem_fs_av)
self.scanx.minimumValue = Q_(0, 'mm')
self.scanx.maximumValue = Q_(10, 'mm')
self.scanx.step = Q_(1, 'mm')
self.scanx.scanVelocity = Q_(10, 'mm/s')
self.scanx.positioningVelocity = Q_(100, 'mm/s')
self.scanx.objectName = "X Scan"
self.scanx.retractAtEnd = True
#define the y scan
self.dataSource = self.scanx
self._oldScanXStart = self.dataSource.start
self._oldScanXStop = self.dataSource.stop
self.dataSource.start = self.startMotorScan
self.dataSource.stop = self.stopMotorScan
self.manipulator = self.manipulatorY
self.retractAtEnd = True
self.minimumValue = Q_(0, 'mm')
self.maximumValue = Q_(10, 'mm')
self.step = Q_(2.5, 'mm')
self.positioningVelocity = Q_(100, 'mm/s')
self.scanVelocity = Q_(10, 'mm/s')
#register the manipulators in the dataSaver
self.dataSaver.registerManipulator(self.manipulatorX, 'X')
self.dataSaver.registerManipulator(self.manipulatorY, 'Y')
self.dataSaver.fileNameTemplate = '{date}-{name}-{X}-{Y}'
self.tem_fs_av.addDataSetReadyCallback(self.dataSaver.process)
self.resetCounter(self.resetCounterRow)
class Goniometer(Manipulator):
class EncoderMode(enum.Enum):
A_BSignal1fold = 0xC0
A_BSignal2fold = 0xE0
A_BSignal4fold = 0xF0
class Ramping(enum.Enum):
Ramping = 0
NoRamping = 1
Errors = {
170: 'Maximum relative positioning Distance Exceeded',
175: 'Minimum relative positioning Distance Exceeded',
1200: 'Acceleration too steep',
1201: 'deceleration too steep',
1250: 'acceleration too flat',
1251: 'deceleration too flat',
1300: 'speed value too high',
1350: 'speed value too low',
9000: 'Axis not ready'
}
connection = None
positiveLimitSwitch = traitlets.Bool(False,
read_only=True).tag(group='Status')
negativeLimitSwitch = traitlets.Bool(False,
read_only=True).tag(group='Status')
calibrateToDegree = Quantity(Q_(0, 'deg'), read_only=False)
calibrateToDegree.tag(group='Status')
isMoving = traitlets.Bool(False, read_only=True).tag(group='Status')
startSpeed = Quantity(Q_(0.25, 'deg/s')).tag(group='Velocity Settings')
acceleration = Quantity(Q_(0.0125, 'deg/s**2'))
acceleration.tag(group='Velocity Settings')
deceleration = Quantity(Q_(0.0125, 'deg/s**2'))
deceleration.tag(group='Velocity Settings')
def __init__(self, axis=0, encoderMode=EncoderMode.A_BSignal4fold,
objectName=None, loop=None):
super().__init__(objectName, loop)
self.setPreferredUnits(ureg.deg, ureg.deg / ureg.s)
if Goniometer.connection is None:
Goniometer.connection = GonioConn()
self.cdll = Goniometer.connection.dll
self.axis = axis
self.cdll.InitEncoder(self.axis, encoderMode.value)
self.cdll.SetEncoder(self.axis, 0)
self.cdll.SetRunFreeFrq(self.axis, 100)
self.cdll.SetRunFreeSteps(self.axis, 32000)
# don't know if important
self.cdll.SetPosition(self.axis, 0)
self.set_trait('value', self._stepToDeg(
self.cdll.GetPosition(self.axis)))
self.velocity = Q_(5, 'deg/s')
self._statusRefresh = 0.1
self._isMovingFuture = asyncio.Future()
self._isMovingFuture.set_result(None)
self._updateFuture = ensure_weakly_binding_future(self.updateStatus)
async def updateStatus(self):
while True:
await asyncio.sleep(self._statusRefresh)
if (Goniometer.connection is None):
continue
await self.singleUpdate()
async def singleUpdate(self):
steps = self.cdll.GetPosition(self.axis)
self.set_trait('value', self._stepToDeg(steps))
ls = self.cdll.GetLSStatus(self.axis)
self.set_trait('positiveLimitSwitch', bool(ls & 1))
self.set_trait('negativeLimitSwitch', bool(ls & 2))
self.set_trait('isMoving',
not bool(self.cdll.GetReadyStatus(self.axis)))
if self.isMoving:
self.set_trait('status', self.Status.Moving)
else:
self.set_trait('status', self.Status.Idle)
if not self._isMovingFuture.done():
self._isMovingFuture.set_result(None)
async def __aexit__(self, *args):
self.stop()
self._updateFuture.cancel()
await super().__aexit__(*args)
@action("Stop")
def stop(self, stopMode=Ramping.Ramping):
self.cdll.StopMotion(self.axis, stopMode.value)
self._isMovingFuture.cancel()
#@action("Reference")
async def reference(self):
if self.isMoving:
logging.info('{} {}: Please finish'.format(self, self.axis) +
'movement before searching Limit Switch')
return False
self._setSpeedProfile(Q_(5, 'deg/s'))
self.cdll.SetRunFreeFrq(self.axis, 100)
self.cdll.SetRunFreeSteps(self.axis, 32000)
self.cdll.SearchLS(self.axis, ord('-'))
self._isMovingFuture = asyncio.Future()
await self._isMovingFuture
self.cdll.FindLS(self.axis, ord('-'))
self.cdll.RunLSFree(self.axis, ord('-'))
self._isMovingFuture = asyncio.Future()
await self._isMovingFuture
self.cdll.SetPosition(self.axis, 0)
def _setSpeedProfile(self, velocity):
ss = int(self.startSpeed.to('deg/s').magnitude*400)
fs = int(velocity.to('deg/s').magnitude*400)
ac = int(self.acceleration.to('deg/s**2').magnitude*400)
dc = int(self.deceleration.to('deg/s**2').magnitude*400)
error = self.cdll.SetSpeedProfile(self.axis, ss, fs, ac, dc)
if error != 0:
error = self.cdll.SetSpeedProfile(self.axis, 100, 2000, 5, 5)
logging.error('{} {}: '.format(self, self.axis) +
Goniometer.Errors.get(error))
logging.error('{} {}: Setting Speed command ignored'
.format(self, self.axis))
return False
else:
return True
async def moveTo(self, val: float, velocity=None):
if velocity is None:
velocity = self.velocity
# The Goniometer ignores new position commands, if the stage is moving
if self.isMoving:
self.stop()
while self.status != self.Status.Idle:
await asyncio.sleep(0)
error = self.cdll.SetDestination(self.axis, self._degToStep(val),
ord('a'))
if error != 0:
logging.error('{} {}: '.format(self, self.axis) +
Goniometer.Errors.get(error))
logging.error('{} {}: Positioning Command ignored'
.format(self, self.axis))
return False
self._setSpeedProfile(velocity)
error = self.cdll.StartMotion(self.axis,
Goniometer.Ramping.Ramping.value)
if error != 0:
logging.error('{} {}: '.format(self, self.axis) +
Goniometer.Errors.get(error))
logging.error('{} {}: Positioning Command ignored'
.format(self, self.axis))
return False
self._isMovingFuture = asyncio.Future()
await self._isMovingFuture
@action('Set Calibration')
def calibrate(self, value=None):
if value is None:
value = self.calibrateToDegree
self.cdll.SetPosition(self.axis, self._degToStep(value))
def _degToStep(self, degs):
return int(degs.to('deg').magnitude*400)
def _stepToDeg(self, steps):
return Q_(steps/400.0, 'deg')
def _stepToDeg(self, steps):
return Q_(steps/400.0, 'deg')
