Allow specifying an offset on onewire sensor

modules/base_plugins/one_wire/__init__.py

@@ -67,6 +67,7 @@ class myThread (threading.Thread):
 class ONE_WIRE_SENSOR(SensorPassive):
 
     sensor_name = Property.Select("Sensor", getSensors())
+    offset = Property.Number("Offset", True, 0)
 
     def init(self):
 
@@ -86,9 +87,9 @@ class ONE_WIRE_SENSOR(SensorPassive):
 
     def read(self):
         if self.get_config_parameter("unit", "C") == "C":
-            self.data_received(round(self.t.value, 2))
+            self.data_received(round(self.t.value + float(self.offset), 2))
         else:
-            self.data_received(round(9.0 / 5.0 * self.t.value + 32, 2))
+            self.data_received(round(9.0 / 5.0 * self.t.value + 32 + float(self.offset), 2))
 
     @classmethod
     def init_global(self):