split epics related devices into epics.py

also split the configfile:
test.cfg for normal playing around
epics.cfg for playing with epics

Change-Id: Id91042fbbdcb6972b1493419960667b39f56f17e

etc/epics.cfg

@@ -0,0 +1,11 @@
+[server]
+bindto=0.0.0.0
+bindport=10767
+interface = tcp
+framing=eol
+encoding=text
+
+[device epicspv]
+class=devices.epics.EPICS_PV
+sensor="test_sensor"
+max_rpm="very high"

etc/test.cfg

@@ -16,7 +16,11 @@ maxheaterpower=10
 class=devices.test.Temp
 sensor="X34598T7"
 
-[device epicspv]
-class=devices.test.EPICS_PV
-sensor="test_sensor"
-max_rpm="very high"
+[device T2]
+class=devices.demo.CoilTemp
+sensor="X34598T8"
+
+[device T3]
+class=devices.demo.CoilTemp
+sensor="X34598T9"
+

src/devices/epics.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python
+#  -*- coding: utf-8 -*-
+# *****************************************************************************
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+#
+# This program 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 General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+# Module authors:
+#   Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>
+# *****************************************************************************
+
+"""testing devices"""
+
+import random
+
+from devices.core import Readable, Driveable, PARAM
+
+
+try:
+    from epics import PV
+except ImportError:
+    PV=None
+
+
+class EPICS_PV(Driveable):
+    """pyepics test device."""
+
+    PARAMS = {
+        'sensor': PARAM("Sensor number or calibration id",
+                        validator=str, readonly=True),
+        'max_rpm': PARAM("Maximum allowed rpm",
+                         validator=str, readonly=True),
+    }
+
+    def read_value(self, maxage=0):
+        p1 = PV('testpv.VAL')
+        return p1.value
+
+    def write_target(self, target):
+        p1 = PV('test.VAL')
+        p1.value = target

src/devices/test.py

@@ -26,8 +26,6 @@ import random
 from devices.core import Readable, Driveable, PARAM
 from validators import floatrange
 
-from epics import PV
-
 
 class LN2(Readable):
     """Just a readable.
@@ -76,20 +74,3 @@ class Temp(Driveable):
         pass
 
 
-class EPICS_PV(Driveable):
-    """pyepics test device."""
-
-    PARAMS = {
-        'sensor': PARAM("Sensor number or calibration id",
-                        validator=str, readonly=True),
-        'max_rpm': PARAM("Maximum allowed rpm",
-                         validator=str, readonly=True),
-    }
-
-    def read_value(self, maxage=0):
-        p1 = PV('testpv.VAL')
-        return p1.value
-
-    def write_target(self, target):
-        p1 = PV('test.VAL')
-        p1.value = target