/usr/lib/python2.7/dist-packages/sardana/pool/poolcontrollers/DummyZeroDController.py is in python-sardana 1.2.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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##
## This file is part of Sardana
##
## http://www.tango-controls.org/static/sardana/latest/doc/html/index.html
##
## Copyright 2011 CELLS / ALBA Synchrotron, Bellaterra, Spain
##
## Sardana is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## Sardana is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with Sardana. If not, see <http://www.gnu.org/licenses/>.
##
##############################################################################
import random
from sardana import State
from sardana.pool.controller import ZeroDController
class Channel:
def __init__(self,idx):
self.idx = idx # 1 based index
self.value = 0.0
self.active = False
class DummyZeroDController(ZeroDController):
"""This class represents a dummy Sardana 0D controller."""
gender = "Simulation"
model = "Basic"
organization = "Sardana team"
MaxDevice = 1024
def __init__(self, inst, props, *args, **kwargs):
ZeroDController.__init__(self, inst, props, *args, **kwargs)
self.channels = [ Channel(i+1) for i in xrange(self.MaxDevice) ]
self.read_channels = {}
def AddDevice(self,ind):
self.channels[ind].active = True
def DeleteDevice(self,ind):
self.channels[ind].active = False
def StateOne(self,ind):
return State.On, "OK"
def _setChannelValue(self, channel):
channel.value = 100 * channel.idx + 10*(random.random()-0.5)
def PreReadAll(self):
self.read_channels = {}
def PreReadOne(self,ind):
channel = self.channels[ind-1]
self.read_channels[ind] = channel
def ReadAll(self):
for channel in self.read_channels.values():
self._setChannelValue(channel)
def ReadOne(self,ind):
v = self.read_channels[ind].value
return v
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