Correctly set _slot variable

brefra · brefra · commit 87fd6abde29d · 2021-08-10T20:48:16.000+02:00
diff --git a/plugwise/nodes/circle.py b/plugwise/nodes/circle.py
@@ -833,7 +833,7 @@ def _energy_timestamp_memory_address(self, utc_timestamp: datetime):
             _slot -= 1
             if _slot == 0:
                 _address -= 1
-                _slot == 4
+                _slot = 4
             _hours += 1
 
         return _address
