From ffb8c375e1676d5dbff17c4ed761ec221f8d89f9 Mon Sep 17 00:00:00 2001
From: Henrik Lemke <henrik.lemke@psi.ch>
Date: Sat, 4 Nov 2017 21:42:49 +0100
Subject: [PATCH] fist working instrument module

---
 eco_epics/utilities_epics.py | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 eco_epics/utilities_epics.py

diff --git a/eco_epics/utilities_epics.py b/eco_epics/utilities_epics.py
new file mode 100644
index 0000000..71e9efd
--- /dev/null
+++ b/eco_epics/utilities_epics.py
@@ -0,0 +1,30 @@
+from epics import PV 
+
+class EnumWrapper:
+    def __init__(self,pvname):
+        self._pv = PV(pvname)
+        self.names = self.pv.enum_strs
+        self.setters = \
+                Positioner(\
+                [(nam,lambda:self.set(nam))
+                    for nam in self.names])
+
+    def set(self,target):
+        if type(target) is str:
+            assert target in self.names,\
+                    "set value need to be one of \n %s"%self.names
+            self._pv.put(self.names.index(target))
+        elif type(target) is int:
+            assert target>0, 'set integer needs to be greater equal zero'
+            assert target<len(self.names)
+            self._pv.put(target)
+
+
+
+
+class Positioner:
+    def __init__(list_of_name_func_tuples):
+        for name,func in list_of_name_func_tuples:
+            self.__dict__[name.replace' ','_'] = func
+
+