def doPreinit(self, mode):
PyTangoDevice.doPreinit(self, mode)
# Create hw specific device if given
if self.hwdevice:
self._hwDev = HwDevice(self.name + '._hwDev',
tangodevice=self.hwdevice, lowlevel=True)
# optional components
self._shutter = None
if mode != SIMULATION:
self._initOptionalComponents()
if self._dev.camera_model.startswith('SIMCAM'):
self.log.warning('Using lima simulation camera! If that\'s not'
' intended, please check the cables and '
'restart the camera and the lima server')
# set some dummy roi to avoid strange lima rotation behaviour
# (not at 0, 0 to avoid possible problems with strides)
self._writeRawRoi((8, 8, 8, 8))
# ensure NO rotation
self._dev.image_rotation = 'NONE'
# set full detector size as roi
self._writeRawRoi((0, 0, 0, 0))
# cache full detector size
self._width_height = (self.imagewidth, self.imageheight)
else:
# some dummy shape for simulation
self._width_height = (2048, 1536)
def doStatus(self, maxage=0):
# Workaround for status changes from busy to another state although the
# operation has _not_ been completed.
st, msg = PyTangoDevice.doStatus(self, maxage)
if self._lastStatus == status.BUSY and st != status.BUSY:
self.log.debug("doStatus: leaving busy state (%d)? %d. "
"Check again after a short delay.", status.BUSY, st)
session.delay(5)
st, msg = PyTangoDevice.doStatus(self, 0)
self.log.debug("doStatus: recheck result: %d", st)
self._lastStatus = st
return st, msg
def doPreinit(self, mode):
PyTangoDevice.doPreinit(self, mode)
self.log.info('Checking if camera script is ready!')
try:
msg = self._dev.communicate('ready?')
if msg.strip() != 'ready!':
raise CommunicationError(
self, 'Camera script gave wrong '
'answer - please check!')
except NicosError:
self.log.warning('Camera is not responding - please start '
'tomography script on camera first!')
raise
def doStatus(self, maxage=0):
return PyTangoDevice.doStatus(self, maxage)[0], ''
def doFinish(self):
self._dev.Stop()
session.delay(0.2)
PyTangoDevice._hw_wait(self)
def doPrepare(self):
self._dev.Clear()
PyTangoDevice._hw_wait(self)
self.log.debug("Detector cleared")
self._dev.Prepare()