uniax, version 7.10.2021

- driving with a generator
- 3 phases
  1) find active range (low current, far movement until force over hysteresis)
  2) release force until well below target
  3) adjusting using pid_p. (this is in fact an integral factor)

secop/persistent.py

@@ -56,12 +56,14 @@ import os
 import json
 
 from secop.lib import getGeneralConfig
+from secop.datatypes import EnumType
 from secop.params import Parameter, Property, BoolType, Command
 from secop.modules import HasAccessibles
 
 
 class PersistentParam(Parameter):
-    persistent = Property('persistence flag', BoolType(), default=True)
+    persistent = Property('persistence flag (auto means: save automatically on any change)',
+                          EnumType(off=0, on=1, auto=2), default=1)
 
 
 class PersistentMixin(HasAccessibles):
@@ -73,8 +75,12 @@ class PersistentMixin(HasAccessibles):
         self.initData = {}
         for pname in self.parameters:
             pobj = self.parameters[pname]
-            if not pobj.readonly and getattr(pobj, 'persistent', False):
+            if not pobj.readonly and getattr(pobj, 'persistent', 0):
                 self.initData[pname] = pobj.value
+                if pobj.persistent == 'auto':
+                    def cb(value, m=self):
+                        m.saveParameters()
+                    self.valueCallbacks[pname].append(cb)
         self.writeDict.update(self.loadParameters(write=False))
 
     def loadParameters(self, write=True):