def _commute(self):
self.log.info('commute: see in speed history: burst for 3min, '
'a break of 20sec, an a peak, final break of 2min '
'total ca 6min')
self._attached_comm.writeLine('m4070=5')
session.delay(0.5)
self.log.debug('DEVELOPING just wait!')
def _HW_readParameter_index(self, index):
LDebug = True
if index not in self.HW_readable_Params:
raise UsageError('Reading not possible for parameter index %d' %
index)
index = self.HW_readable_Params.get(index, index)
self.log.debug('readParameter index %d', index)
for i in range(10):
self._writeUpperControlWord((index << 8) | 4)
session.delay(0.15)
stat = self._readStatusWord()
if (stat & 0x8000) != 0:
if LDebug and i > 0:
self.log.info('readParameter %d', i)
# old return self._readReturn()
value = self._dev.ReadOutputWords((self.address + 1, 9))
retindex = value[0] >> 8
if retindex != index:
if LDebug:
self.log.debug('read second!')
continue
value = value[7:]
value = struct.unpack('=i', struct.pack('<2H', *value))[0]
return value
if (stat & 0x4000) != 0:
raise UsageError(
self, 'NACK ReadPar command not '
'recognized by HW, please retry later...')
raise UsageError(
self, 'ReadPar command not recognized by '
'HW, please retry later ...')
def _HW_readParameter(self, index):
if index not in self.HW_readable_Params:
raise UsageError('Reading not possible for parameter index %s' %
index)
index = self.HW_readable_Params.get(index, index)
self.log.debug('readParameter %d', index)
for i in range(10):
self._writeUpperControlWord((index << 8) | 4)
session.delay(0.15)
stat = self._areadStatusWord(self.addresses[0])
self.log.debug('readStatusWord 0 %d', stat)
stat = self._areadStatusWord(self.addresses[0])
self.log.debug('readStatusWord 1 %d', stat)
if (stat & 0x8000) != 0:
if i > 0:
self.log.debug('readParameter %d', i + 1)
return self._readReturn()
if (stat & 0x4000) != 0:
raise UsageError(
self, 'NACK ReadPar command not recognized '
'by HW, please retry later...')
raise UsageError(
self, 'ReadPar command not recognized by HW, please '
'retry later ...')
def _caress_guard_nolog(self, function, *args):
if not self._initialized or not self._caressObject:
CARESSDevice.doInit(self, self._mode)
# self._com_lock.aquire()
try:
return function(*args)
except (CORBA.COMM_FAILURE, CORBA.TRANSIENT) as err:
tries = self.comtries - 1
while True and tries > 0:
self.log.warning('Remaining tries: %d', tries)
session.delay(self.comdelay)
if isinstance(err, CORBA.TRANSIENT):
CARESSDevice.doShutdown(self)
CARESSDevice.doInit(self, self._mode)
session.delay(self.comdelay)
try:
return function(*args)
except (CORBA.COMM_FAILURE, CORBA.TRANSIENT) as err:
tries -= 1
raise CommunicationError(
self, 'CARESS error: %s%r: %s' %
(function.__name__, args, err)) from err
finally:
pass
def doReset(self):
BaseSequencer.doReset(self)
for d in self._adevs:
d.reset()
session.delay(2)
if self.doStatus()[0] == status.OK:
raise NicosError(self, 'cannot reset')
def _getCID(self, device):
if session.sessiontype == POLLER:
while not self.cid:
session.delay(0.5)
return self.cid
self.log.debug('get CARESS device ID: %r', device)
answer = createSubprocess(
'cd %s && %s/dump_u1 -n %s' %
(self.caresspath, self.toolpath, device),
shell=True,
stdout=subprocess.PIPE,
universal_newlines=True,
).communicate()[0]
self._caress_name = device
if answer in ('', None):
if not CARESSDevice._caress_maps:
CARESSDevice._caress_maps[device] = 4096
elif device not in CARESSDevice._caress_maps:
CARESSDevice._caress_maps[device] = 1 + \
max(CARESSDevice._caress_maps.values())
res = CARESSDevice._caress_maps[device]
else:
res = int(answer.split('=')[1])
self.log.debug('get CARESS device ID: %r', res)
return res
def doReference(self, *args):
refswitch = args[0] if args and isinstance(args[0], string_types) \
else None
if self.doStatus()[0] == status.BUSY:
self.stop()
self.wait()
# The sixfold and triple cards will be reset as whole card, so values
# of all channels will reset !!!
# self.reset()
# self.wait()
if self.doStatus()[0] == status.OK:
if self._refcontrol and self._refcontrol.is_alive():
self._refcontrol.join()
self._refcontrol = None
if self._refcontrol is None:
threadname = 'referencing %s' % self
self._refcontrol = createThread(threadname,
self._reference,
args=(refswitch, ))
session.delay(0.2)
else:
raise NicosError(self, 'in error or busy state')
def _switchpoly(self):
"""Start air pressure cylinder for additional shielding block."""
if self._stoprequest == 2 or self._errorstate:
self._poly = 0
if self._poly != 0 and \
abs(self.read(0) - self.offset - self.polypos) <= 0.1:
self.log.debug('Switch poly0, mtt = %s', self.read(0))
self.log.debug('Switch poly: %d', self._poly)
if self._poly < 0 and self._attached_polyswitch.read(0) != 1:
self.log.debug('Move poly block out')
self._attached_polyswitch.maw(1)
if self._attached_polyswitch.read(0) != 1:
self._setErrorState(
MoveError, 'shielding block in way, '
'cannot move 2Theta monochromator')
elif self._poly > 0 and self._attached_polyswitch.read(0) != 0:
self.log.debug('Move poly block in')
self._attached_polyswitch.maw(0)
if self._attached_polyswitch.read(0) != 0:
self._setErrorState(
MoveError, 'shielding block not on '
'position, measurement without'
'shielding yields to enlarged '
'background')
# It takes this time to move up/down. There is no switch to
# indicate the end position is reached
session.delay(self.polysleep)
def doWritePhase(self, value):
# Change sign of offset since the sign of the value is now changed
# afterwards
set_to = (value - self.reference) / self.gear # SB
self.log.info('Disk %d angle %0.2f Phase %0.2f gear %d ref %.2f',
self.chopper, value, set_to, self.gear, self.reference)
# We think in 0..360 degrees, choppers 1 to 4 in -180..180 degrees
# and choppers 5 and 6 in -90..90 degrees
while set_to > (+180. / self.gear):
set_to -= 360. / self.gear
while set_to < (-180. / self.gear):
set_to += 360. / self.gear
# The Chopper understands "negative hundreths degrees"
set_to = int(round(set_to * -100)) # SB
self.log.debug('Disk %d Phase %d gear %d', self.chopper, set_to,
self.gear)
# Notausgang = 10
# while Notausgang:
# Notausgang -= 1
# res = self._read_base('m4070')
# if res == '0':
# break
# if Notausgang < 0:
# break
# self.log.info('warten %s', res)
# #session.delay(0.04) 4 loops!
# session.delay(0.2)
# TODO
self._write_controller('m4073=%d m4074=0 m4075=%d m4076=%d m4070=7',
set_to, self.gear)
session.delay(5) # MP: isso
def doReset(self, t=3):
# get usbdevfs file name
if self._io is not None:
try:
os.close(self._io)
except OSError:
pass
self.log.debug('resetting...')
dfile = os.open(self.usbdevice, os.O_RDWR)
fcntl.ioctl(dfile, USBDEVFS_RESET)
self.log.debug('USBDEVFS_RESET ioctl done')
os.close(dfile)
session.delay(2.5)
self.log.debug('re-opening device...')
self._io = os.open(self.device, os.O_RDWR)
try:
ident = self._query('*IDN?', binary=False, t=0)
self.log.debug('sensor identification: %s', ident)
self._execute('FORMAT INTEGER')
self.doRead()
except CommunicationError:
if t == 0:
raise
self.doReset(t - 1)
return
def _checkAir(self):
if self._attached_io_ref.read(0) == 1:
self._attached_io_air.move(1)
session.delay(self.timedelay)
if self._attached_io_ref.read(0) == 1:
return 0
return 1
def timeoutAction(self):
self.log.warning('did not reach target, trying again...')
# The output sometimes seems not to come on. Therefore,
# switch it off manually and try again...
self._attached_output.start(0)
session.delay(1)
self.start(self.target)
def doReset(self):
bus = self._attached_bus
if self.status(0)[0] != status.OK: # busy or error
bus.send(self.addr, 33) # stop
try:
# this might take a while, ignore errors
self._hw_wait()
except Exception:
pass
# remember current state
actpos = bus.get(self.addr, 130)
speed = bus.get(self.addr, 128)
accel = bus.get(self.addr, 129)
minstep = bus.get(self.addr, 132)
maxstep = bus.get(self.addr, 131)
bus.send(self.addr, 31) # reset card
session.delay(0.2)
if self._hwtype != 'single':
# triple and sixfold cards need a LONG time for resetting
session.delay(2)
# update state
bus.send(self.addr, 41, speed, 3)
bus.send(self.addr, 42, accel, 3)
bus.send(self.addr, 45, minstep, 6)
bus.send(self.addr, 44, maxstep, 6)
bus.send(self.addr, 43, actpos, 6)
def _taco_guard_nolog(self, function, *args):
"""Try running the TACO function, and raise a NicosError on exception.
A more specific NicosError subclass is chosen if appropriate. For
example, database-related errors are converted to
`.CommunicationError`.
A TacoDevice subclass can add custom error code to exception class
mappings by using the `.taco_errorcodes` class attribute.
If the `comtries` parameter is > 1, the call is retried accordingly.
"""
if not self._dev:
raise NicosError(self, 'TACO device not initialised')
self._com_lock.acquire()
try:
return function(*args)
except TACOError as err:
# for performance reasons, starting the loop and querying
# self.comtries only triggers in the error case
if self.comtries > 1 or err == DevErr_RPCTimedOut:
tries = 2 if err == DevErr_RPCTimedOut and self.comtries == 1 \
else self.comtries - 1
self.log.warning('TACO %s failed, retrying up to %d times',
function.__name__, tries)
while True:
session.delay(self.comdelay)
tries -= 1
try:
return function(*args)
except TACOError as err:
if tries == 0:
break # and fall through to _raise_taco
self._raise_taco(err, '%s%r' % (function.__name__, args))
finally:
self._com_lock.release()
def doStart(self, position):
try:
if self.doStatus()[0] != status.OK:
raise NicosError(self, 'filter returned wrong position')
if position == self.read(0):
return
if position == 'in':
self._attached_io_set.move(1)
elif position == 'out':
self._attached_io_set.move(0)
else:
# shouldn't happen...
self.log.info('PG filter: illegal input')
return
session.delay(2)
if self.doStatus()[0] == status.ERROR:
raise NicosError(self, 'PG filter is not readable, please '
'check device!')
finally:
self.log.info('PG filter: %s', self.read(0))
def _step(self, devicename, pos):
"""Make one step in the changing sequence.
evaluates the given keyword argument and
moves the attached_device with the keyname to the value-position.
Also checks success
"""
dev = self._adevs[devicename]
# now log some info
if pos == 'open':
self.log.info("Open '%s'", dev.name)
elif pos == 'closed':
self.log.info("Close '%s'", dev.name)
else:
self.log.info("Move '%s' to '%s' position", dev.name, pos)
try:
dev.start(pos)
if devicename == 'r3': # R3 does not wait!
session.delay(2)
if devicename == 'grip': # grip does not wait!
session.delay(2)
dev.wait()
except Exception:
# most probably it is touching the limit switch
if devicename == 'lift':
dev._adevs['moveables'][0].motor.stop()
self.log.info('Limit switch ?')
else:
raise
if dev.read(0) != pos:
raise PositionError("Device '%s' did not reach its target '%s', "
'aborting' % (dev, pos))
def preparePoint(self, num, xvalues):
if session.mode == SIMULATION and num > self._simpoints:
session.log.info('skipping %d points...',
self._numpoints - self._simpoints)
duration = session.clock.time - self._sim_start
session.clock.tick(duration * (self._numpoints - self._simpoints))
if self._numpoints < 0 and not self._sweepdevices:
session.log.info('would scan indefinitely, skipping...')
raise StopScan
if num == 1:
self._etime.started = currenttime()
if self._sweeptargets:
try:
self.moveDevices(self._sweepdevices,
self._sweeptargets,
wait=False)
except SkipPoint:
raise StopScan
elif self._delay:
# wait between points, but only from the second point on
session.action('Delay')
session.delay(self._delay)
Scan.preparePoint(self, num, xvalues)
if session.mode == SIMULATION:
self._sim_start = session.clock.time
def _HW_rawCommand(self, cmd, par=0):
if cmd not in self._HW_CMDS:
raise ValueError('Command code %r not supported, check code and '
'docu!' % cmd)
cmd = int(self._HW_CMDS.get(cmd, cmd))
pswd = 16082008 + ((int(cmd) + int(par)) % 228)
self.log.debug('Initiate command %d with par %d and pswd %d',
cmd, par, pswd)
self._writeU32(16, int(par))
self._writeU32(12, int(pswd))
self._writeU32(14, int(cmd))
self.log.debug('checking reaction')
session.delay(0.1)
for _ in range(10):
ack = bool(self._HW_readACK())
nack = bool(self._HW_readNACK())
self.log.debug('%s %s', ack, nack)
if ack and not nack:
self.log.debug('Command accepted')
return
elif nack and not ack:
raise NicosError('Command rejected by Beckhoff')
raise NicosTimeoutError('Command not recognized by Beckhoff within 1s!')
def _hw_wait(self, devices):
loops = 0
final_exc = None
devlist = devices[:] # make a 'real' copy of the list
while devlist:
loops += 1
for dev in devlist[:]:
try:
done = dev.doStatus(0)[0]
except Exception:
dev.log.exception('while waiting')
final_exc = filterExceptions(sys.exc_info(), final_exc)
# remove this device from the waiters - we might still
# have its subdevices in the list so that _hw_wait()
# should not return until everything is either OK or
# ERROR
devlist.remove(dev)
if done == status.BUSY:
# we found one busy dev, normally go to next iteration
# until this one is done (saves going through the whole
# list of devices and doing unnecessary HW communication)
if loops % 10:
break
# every 10 loops, go through everything to get an accurate
# display in the action line
continue
devlist.remove(dev)
if devlist:
session.delay(self._base_loop_delay)
if final_exc:
reraise(*final_exc)
def doReset(self):
self._lasterror = None
try:
self._attached_bus.send(self.addr, 153)
except NicosError:
pass
else:
session.delay(0.5)
def doReference(self):
bus = self._attached_bus
bus.send(self.addr, 34) # always go forward (positive)
bus.send(self.addr, 47, self.speed, 3) # reference with normal speed
# may need to sleep a little here....
session.delay(0.1)
self.wait()
self.doSetPosition(self.refpos)
def doStart(self, value):
if abs(self.read(0)) < 10 and self.waittime:
self.log.warning('Please make sure the Cascade detector '
'is supplied with counting gas! Waiting '
'for %d seconds before ramping up the HV.',
self.waittime)
session.delay(self.waittime)
return Actuator.doStart(self, value)
def transferSettings(self):
import epics
for epicsid, pvs in iteritems(self.pv_values):
for pvname, pvvalue in pvs:
fullpvname = '%s:%s_W' % (epicsid, pvname)
self.log.debug('setting %s = %s' % (fullpvname, pvvalue))
epics.caput(fullpvname, pvvalue)
session.delay(2)
def _writeControlBit(self, bit, value):
self._busy_until = time.time() + 3
self.log.debug('_writeControlBit %r, %r', bit, value)
tmpval = uint16(self._dev.ReadOutputWord(self.address))
tmpval &= ~(1 << int(bit))
tmpval |= (int(value) << int(bit))
self._dev.WriteOutputWord((self.address, uint16(tmpval)))
session.delay(0.5) # work around race conditions inside plc....
def doStart(self, value):
self.log.info('requested position %d', value)
what = 'm4077=%d' % value
self.log.debug('doWritePos what: %s', what)
res = self._attached_comm.writeLine(what)
self.log.debug('doWritePos res: %d', res)
# Better solution would be to take the solution from TOFTOF
session.delay(.1) # time is needed to transfer and initiate start
def doStart(self, target):
if target == 'open':
self._attached_open.start(1)
session.delay(0.01)
self._attached_open.start(0)
else:
self._attached_close.start(1)
session.delay(0.01)
self._attached_close.start(0)
def doStart(self):
max_pow = 0
results = []
for _ in range(5):
session.delay(0.1)
val = pvget(self.pv_name)
max_pow = max(val, max_pow)
results.append(val)
self.answer = sum(results) / len(results)
def _start_measurement(self):
self.log.debug('starting new FTIR measurement')
# wait for READY signal - otherwise no measurement is planned
self._wait_for(READY, 'READY')
# a \_/ flank is needed to trigger start
self._attached_trigger_out.start(0)
session.delay(0.05)
self._attached_trigger_out.start(1)
self._wait_for(BUSY, 'BUSY')
def _wait_for(self, sig, name):
i = 0
while self._attached_status_in.read(0) != sig:
session.delay(0.1)
i += 1
if i == 100:
raise NicosTimeoutError(
self, 'timeout waiting for %s '
'signal from spectrometer' % name)
def doStart(self):
self.log.debug('Integral start')
timeval = time.time() + self._timeout
if self.detector not in session.experiment.detlist:
self._attached_pintimer.start(self._preset)
while self.status(0)[0] != status.BUSY:
if time.time() > timeval:
self.log.warning('Pinstate timeout in start')
return
session.delay(0.02)