removed value caching for RW attributes and instead fetch values from hardware

tangostationcontrol/tangostationcontrol/clients/attribute_wrapper.py

@@ -70,19 +70,7 @@ class attribute_wrapper(attribute):
                 max_dim_y = 0
 
         if access == AttrWriteType.READ_WRITE:
-            """ if the attribute is of READ_WRITE type, assign the RW and write function to it"""
-
-            @only_in_states([DevState.STANDBY, DevState.ON], log=False)
-            @fault_on_error()
-            def read_RW(device):
-                # print("read_RW {}, {}x{}, {}, {}".format(me.name, me.dim_x, me.dim_y, me.attr_type, me.value))
-                """
-                read_RW returns the value that was last written to the attribute
-                """
-                try:
-                    return device.value_dict[self]
-                except Exception as e:
-                    raise Exception(f"Attribute read_RW function error, attempted to read value_dict with key: `{self}`, are you sure this exists?") from e
+            """ if the attribute is of READ_WRITE type, assign the write function to it"""
 
             @only_in_states([DevState.STANDBY, DevState.ON], log=False)
             @fault_on_error()
@@ -92,14 +80,11 @@ class attribute_wrapper(attribute):
                 """
 
                 self.write_function(value)
-                device.value_dict[self] = value
 
-            self.fget = read_RW
             self.fset = write_RW
 
 
-        else:
-            """ if the attribute is of READ type, assign the read function to it"""
+        """ Assign the read function to the attribute"""
 
         @only_in_states([DevState.STANDBY, DevState.ON], log=False)
         @fault_on_error()