Use a 2nd previous slot timestamp to detect returning to consumption only

Author: bouwew

plugwise_usb/nodes/helpers/pulses.py

@@ -506,7 +506,8 @@ def _update_log_direction(
 
         prev_address, prev_slot = calc_log_address(address, slot, -1)
         if self._log_exists(prev_address, prev_slot):
-            if self._logs[prev_address][prev_slot].timestamp == timestamp:
+            timestamp_2 = self._logs[prev_address][prev_slot].timestamp
+            if timestamp_2  == timestamp:
                 # Given log is the second log with same timestamp,
                 # mark direction as production
                 self._logs[address][slot].is_consumption = False
@@ -536,6 +537,13 @@ def _update_log_direction(
             elif self._log_production is None:
                 self._log_production = False
 
+        prev_prev_address, prev_prev_slot = calc_log_address(address, slot, -2)
+        if self._log_exists(prev_prev_address, prev_prev_slot):
+            timestamp_3 = self._logs[prev_prev_address][prev_prev_slot].timestamp
+            self._log_production = (
+                timestamp_2 == timestamp and timestamp_3 != timestamp
+            ) or (timestamp_2 == timestamp_3 and timestamp_2 != timestamp)
+
     def _update_log_interval(self) -> None:
         """Update the detected log interval based on the most recent two logs."""
         if self._logs is None or self._log_production is None: