Clear retained HA discovery for removed meters

2026-06-27 01:34:57 +02:00
parent 5bfe3890f2
commit a09f1dec87
1 changed files with 10 additions and 0 deletions
@@ -272,6 +272,16 @@ static void mqttPublishDiscovery() {
    bool pubOk = mqttClient.publish(topic, payload, true);
    Serial.printf("[MQTT] discovery %s -> %s (ok=%d)\n", topic, payload, pubOk);
  }
+
+  // Clear retained discovery for slots no longer in use (meters removed) so
+  // Home Assistant drops the stale entities instead of keeping them forever.
+  for (int i = meterCount; i < MAX_METERS; i++) {
+    String objId = String(devId) + "_meter_" + String(i) + "_current";
+    char topic[128];
+    snprintf(topic, sizeof(topic), "homeassistant/number/%s/config", objId.c_str());
+    mqttClient.publish(topic, "", true);
+    Serial.printf("[MQTT] discovery clear %s\n", topic);
+  }
 }

 static void mqttSubscribe() {