def OptimizePitch(tPitch,
tQBPM=None,
PitchPosArr=None,
DeltaRange=0.0004,
NumPoints=31,
AvgPerPoint=4,
Detune=0.0):
t0 = time.time()
while True:
c0, c1, c2, c3 = ScanPitch(tPitch=tPitch, tQBPM=tQBPM, PitchPosArr=PitchPosArr, \
DeltaRange=DeltaRange, NumPoints=NumPoints, AvgPerPoint=AvgPerPoint, Detune=Detune)
if c0 == True:
print('%s: Fit of pitch position succeeded.' %
misc.GetTimeString())
break
elif c0 == False:
if abs(c2[0] - c1) < abs(c2[-1] - c1):
delta = 0.8 * DeltaRange
else:
delta = -0.8 * DeltaRange
tPitch.write_attribute('Position', c1 + delta)
if time.time() - t0 > 300:
print('%s: Warning: Iteration timeout. Retry.' %
misc.GetTimeString())
break
return None
def OpenConnection(self, silent = False):
"""
Method to close the connection to the PMAC controller.
"""
if self.connection_active and not (self.silentmode):
print(misc.GetTimeString() + ': Warning. Connection to PMAC already active. Request ignored' )
if self.connection_active == False:
tmp = self.io.OpenPmacDevice(self.pmac_num)
if tmp != 0:
self.io.PmacGetVariableDouble.restype = ctypes.c_double
self.connection_active = True
else:
self.error = True
if self.error == False and self.ioconsole and not self.silentmode: \
print(misc.GetTimeString() + ': Successfully established connection to PMAC.')
return None
def GetVarValue(self, variable, valreturn = False, silent = False):
"""
Method to read a variable value (number) from a PMAC.
Variable has to consist of variable type representing char M, P, I, or Q
and the variable number.
Example:
GetVarValue('Q1234')
GetVarValue('p80')
"""
if self.connection_active:
self.var_value = None
self.var_name = None
self.var_syntaxerror = False
_type = variable[0].upper()
if _type not in ['Q', 'I', 'M', 'P']:
self.var_syntaxerror = True
if not self.silentmode and self.ioconsole:
print(misc.GetTimeString() + ': Error. the specified variable \'%s\' is unknown.' %variable)
return None
try:
count = int(variable[1:])
except:
self.var_syntaxerror = True
print(misc.GetTimeString() + ': Error. the specified variable \'%s\' is unknown.' %variable)
return None
if not self.var_syntaxerror:
tmp = self.io.PmacGetVariableDouble(self.pmac_num, ctypes.c_char(_type.encode()), ctypes.c_uint(count),
ctypes.c_double(-12345))
if tmp != -12345:
self.var_value = tmp
self.var_name = variable.upper()
if not (silent or self.silentmode) and self.ioconsole:
print('%s = %f' %(variable, tmp))
if not valreturn:
return None
else:
return self.var_value
else:
self.var_syntaxerror = True
if not (silent or self.silentmode) and self.ioconsole:
print(misc.GetTimeString() + ': Error. the specified variable \'%s\' is unknown.' %variable)
return None
def setExptime(self, value):
try:
self.tPixelLink.write_attribute('SHUTTER', value)
self.exptime = value
except Exception as e:
print(
misc.GetTimeString() +
': PixelLink server not responding while setting new ExposureTime:\n%s'
% e)
return None
def setExptime(self, value):
try:
while self.tZyla.read_attribute('ready_for_next_acq') == False:
time.sleep(0.01)
self.tZyla.write_attribute('acq_expo_time', value)
self.exptime = value
except Exception as e:
print(
misc.GetTimeString() +
': Hamamatsu server not responding while setting new ExposureTime:\n%s'
% e)
while not self.tZyla.state() == PyTango.DevState.ON:
time.sleep(0.01)
return None
def setExptime(self, value):
try:
while not self.tDet.state() == PyTango.DevState.ON:
time.sleep(0.01)
self.tDet.write_attribute('ShutterTime', value)
self.exptime = value
except Exception as e:
print(
misc.GetTimeString() +
': Lambda server not responding while setting new ExposureTime:\n%s'
% e)
while not self.tDet.state() == PyTango.DevState.ON:
time.sleep(0.01)
return None
def setKITAttribute(self, attribute, value):
try:
# if self.tKIT.state() == PyTango.DevState.STANDBY:
# self.tKIT.command_inout('Stop')
# while not self.tKIT.state() == PyTango.DevState.ON:
# time.sleep(0.01)
self.tKIT.write_attribute(attribute, value)
# self.tKIT.command_inout('Start')
# while not self.tKIT.state() == PyTango.DevState.STANDBY:
# time.sleep(0.01)
except Exception as e:
print(
misc.GetTimeString() +
': KIT server not responding while setting new ExposureTime:\n%s'
% e)
return None
def GetResponse(self, instruction, silent = False):
"""
Method to get a response from the PMAC
"""
if self.connection_active:
self.string_buffer.value = b''
tmp = self.io.PmacGetResponseExA(self.pmac_num, self.string_buffer, ctypes.c_uint(600),
ctypes.c_char_p(instruction.encode()))
if self.silentmode or silent:
return self.string_buffer.value.decode()
else:
print('Query: %s' %instruction)
print('Response: %s' %self.string_buffer.value.decode())
else:
if self.ioconsole and not self.silentmode:
print(misc.GetTimeString() + ': Warning. Connection to PMAC not active. Request ignored.')
return None
def __init__(self, controller=0, silentmode=False, ioconsole = True):
"""
Method to initialize the connection to the controllers
calling parameters:
- controller = <n> with n= 1..6
- silentmode = True / False
with silentmode = True, no output will be printed on screen.
Function overview of the controllers:
Controller 1: In-Vacuum SpaceFab and pushers for photodiodes
Controller 2: In-Vacuum long translation
Controller 3: Granite sliders and aperture x/y/z stage
Controller 4: Optics SpaceFab and pushers for photodiodes
Controller 5: Tip/tilt pods and x-translation for rotational axis,
rotational axis and detector x/z stage
Controller 6: Sample SpaceFab
"""
self.ControllerList = \
{1: [1, '192.168.10.3', 'Controller 1', 'In-Vacuum SpaceFab and pushers for photodiodes'], \
2: [2, '192.168.10.4', 'Controller 2', 'In-Vacuum long translation'], \
3: [3, '192.168.10.5', 'Controller 3', 'Granite sliders and aperture x/y/z stage'], \
4: [4, '192.168.10.6', 'Controller 4', 'Optics SpaceFab and pushers for photodiodes'], \
5: [5, '192.168.10.7', 'Controller 5', 'Tip/tilt pods and x-translation for\nrotational axis, rotational axis and detector x/z stage'], \
6: [6, '192.168.10.8', 'Controller 6', 'Sample SpaceFab'], \
7: [7, '192.168.10.9', 'Controller 7', 'Optics SpaceFab (slider 1)']
# 7: [7, '192.168.10.9', 'Controller 7', 'Optics SpaceFab (slider 1)']
}
self.error = False
self.connection_active = False
self.ioconsole = ioconsole
self.string_buffer = ctypes.create_string_buffer(600)
#check and set silentmode parameter
if silentmode not in [True, False]:
self.silentmode = False
else:
self.silentmode = silentmode
# check and set controller number:
if controller not in [1, 2, 3, 4, 5, 6, 7]:
if self.ioconsole and not self.silentmode: print(misc.GetTimeString() + ': Error. Please choose a controller from 1 to 6')
self.error = True
else:
print("Opening PMacDevice...")
self.pmac_num = self.ControllerList.get(controller)[0]
self.pmac_ip = self.ControllerList.get(controller)[1]
# TODO replace direct dll load with dynamic load depending on environment
self.io = ctypes.windll.LoadLibrary('PComm32W.dll')
# TODO same as OpenConnection? extract and replace
tmp = self.io.OpenPmacDevice(self.pmac_num)
print('Done. Result:')
print(tmp)
if tmp != 0:
self.io.PmacGetVariableDouble.restype = ctypes.c_double
self.connection_active = True
else:
self.error = True
if self.error == False and not (self.silentmode):
if self.ioconsole and not self.silentmode:
print(misc.GetTimeString() + ': Successfully established connection to PMAC Nr. %i.' %controller)
return None
def ScanPitch(tPitch=None,
tQBPM=None,
PitchPosArr=None,
DeltaRange=0.0004,
NumPoints=31,
AvgPerPoint=4,
Detune=0.0):
"""
return values:
<Bool> : Max in center
<Float>: Value of maximum (fit / edge position)
<float arr>: Pitch scanning positions
<float arr>: pitch current results
"""
# TODO remove if tPitch - make tQBPM be mandatory argument as it is used anyway
# If you define tPitch as PyTango.DeviceProxy it will be never None
if tPitch == None:
print('%s: Error - no pitch motor selected' % misc.GetTimeString())
return None
# If you define tPitch only as PyTango.DeviceProxy it will be never 'qbpm2' or 'QBPM2'
if tPitch == 'qbpm2' or tPitch == 'QBPM2':
tQBPM = PyTango.DeviceProxy(proxies.tQBPM_i404_exp02)
# OptimizePitch is used only in NanoScriptHelper were tQBPM is defined as the in the following if.
# Why not to use already defined tQBPM form NanoScriptHelper?
if tQBPM == None:
tQBPM = PyTango.DeviceProxy(proxies.tQBPM_i404_exp01)
Pitch0 = tPitch.read_attribute('Position').value
if Detune != 0.0:
Pitch0 -= Detune
if PitchPosArr == None:
PitchPosArr = numpy.linspace(Pitch0 + DeltaRange,
Pitch0 - DeltaRange,
num=NumPoints,
endpoint=True)
PitchResArr = numpy.zeros((NumPoints))
while tPitch.state() == PyTango.DevState.MOVING:
time.sleep(0.1)
for i in range(PitchPosArr.size):
tPitch.write_attribute('Position', PitchPosArr[i])
time.sleep(0.1)
while tPitch.state() == PyTango.DevState.MOVING:
time.sleep(0.1)
for ii in range(AvgPerPoint):
PitchResArr[i] += 1.0 * tQBPM.read_attribute(
'PosAndAvgCurr').value[2] / AvgPerPoint
time.sleep(0.05)
inum = PitchResArr.argmax()
if inum == 0 or inum == (PitchResArr.size - 1):
print('%s: Maximum at edge of scan detected. Redo scan!' %
misc.GetTimeString())
FitSuccessful = False
PitchMaxPos = PitchPosArr[inum]
tPitch.write_attribute('Position', PitchPosArr[inum] + Detune)
else:
FitSuccessful = True
polyf = numpy.polyfit(PitchPosArr, PitchResArr, deg=2)
PitchMaxPos = -polyf[1] / (2 * polyf[0])
if PitchMaxPos > numpy.amin(PitchPosArr) and PitchMaxPos < numpy.amax(
PitchPosArr):
tPitch.write_attribute('Position', PitchMaxPos + Detune)
else:
PitchMaxPos = PitchPosArr[inum]
FitSuccessful = False
tPitch.write_attribute('Position', PitchPosArr[inum] + Detune)
time.sleep(0.1)
while tPitch.state() == PyTango.DevState.MOVING:
time.sleep(0.1)
return FitSuccessful, PitchMaxPos, PitchPosArr, PitchResArr