implemented read_only. Tested manually but no automatic test yet.

src/DoocsPVFactory.cc

@@ -51,6 +51,11 @@ namespace ChimeraTK {
       }// if name too long
     }// if scalar
 
+    // set read only mode if configures in the xml file or for output variables
+    if (!processArray->isWriteable() || !propertyDescription.isWriteable){
+      doocsPV->set_ro_access();
+    }
+
     return doocsPV;
   }
 

tests/DoocsVariableConfig.xml

@@ -7,6 +7,9 @@
     <property source="DATA_TYPE_CONSTANT">
       <has_history>false</has_history>
     </property>
+    <property source="TO_DEVICE_SCALAR">
+      <is_writeable>false</is_writeable>
+    </property>
   </location>
   <import>/</import>
 </device_server>