Update HomeAssistantDiscoveryClient.cpp

nordeep · Oct 16, 2020 · c3e2c36 · c3e2c36
1 parent 37c250b
commit c3e2c36
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/lib/MQTT/HomeAssistantDiscoveryClient.cpp b/lib/MQTT/HomeAssistantDiscoveryClient.cpp
@@ -35,11 +35,15 @@ void HomeAssistantDiscoveryClient::removeConfig(const BulbId& bulbId) {
 void HomeAssistantDiscoveryClient::addConfig(const char* alias, const BulbId& bulbId) {
   String topic = buildTopic(bulbId);
   DynamicJsonDocument config(1024);
+
+  char uniqidBuffer[30];
+  sprintf_P(uniqidBuffer, PSTR("%X-%s"), ESP.getChipId(), alias);
 
   config[F("schema")] = F("json");
   config[F("name")] = alias;
   config[F("command_topic")] = mqttClient->bindTopicString(settings.mqttTopicPattern, bulbId);
   config[F("state_topic")] = mqttClient->bindTopicString(settings.mqttStateTopicPattern, bulbId);
+  config[F("uniq_id")] = mqttClient->bindTopicString(uniqidBuffer, bulbId);
   JsonObject deviceMetadata = config.createNestedObject(F("device"));
 
   deviceMetadata[F("manufacturer")] = F("esp8266_milight_hub");
@@ -170,4 +174,4 @@ void HomeAssistantDiscoveryClient::addNumberedEffects(JsonArray& effectList, uin
   for (uint8_t i = start; i <= end; ++i) {
     effectList.add(String(i));
   }
-}
+}