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HomeAssistantMQTTDiscovery.ino

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+#include <WiFiS3.h>
+#include <PubSubClient.h>
+#include "HAMqttDevice.h"
+
+// Informations WiFi
+const char* ssid = "WifiHome2";
+const char* password = "louca2212";
+
+// Informations MQTT
+const char* mqtt_server = "10.0.0.3";
+const int mqtt_port = 1883;
+
+// Objets WiFi et MQTT
+WiFiClient wifiClient;
+PubSubClient mqttClient(wifiClient);
+
+// Identifiants pour Home Assistant
+const String uniqueID = "temp01ae";  // Identifiant unique pour le capteur
+const String haPrefix = "homeassistant";  // Préfixe pour le topic de découverte Home Assistant
+const String sensorName = "sensorBedroomT"; // Nom du capteur
+const String deviceName = "Bedroom"; // Nom de l'appareil
+
+void setup() {
+  Serial.begin(115200);
+
+  // Connexion au WiFi
+  connectWiFi();
+
+  // Configuration du client MQTT
+  mqttClient.setServer(mqtt_server, mqtt_port);
+  
+  // Connexion au serveur MQTT
+  connectMQTT();
+
+  // Construire le topic de configuration
+  String configTopic = haPrefix + "/sensor/" + sensorName + "/config";
+
+  // Message de configuration pour Home Assistant
+  String configPayload = "{";
+  configPayload += "\"device_class\":\"temperature\",";
+  configPayload += "\"state_topic\":\"" + haPrefix + "/sensor/" + sensorName + "/state\",";
+  configPayload += "\"unit_of_measurement\":\"°C\",";
+  configPayload += "\"value_template\":\"{{ value_json.temperature}}\",";
+  configPayload += "\"unique_id\":\"" + uniqueID + "\",";
+  configPayload += "\"device\":{";
+  configPayload += "\"identifiers\":[\"" + deviceName + uniqueID + "\"],";
+  configPayload += "\"name\":\"" + deviceName + "\",";
+  configPayload += "\"manufacturer\":\"Example sensors Ltd.\",";
+  configPayload += "\"model\":\"K9\",";
+  configPayload += "\"serial_number\":\"12AE3010545\",";
+  configPayload += "\"hw_version\":\"1.01a\",";
+  configPayload += "\"sw_version\":\"2024.1.0\",";
+  configPayload += "\"configuration_url\":\"https://example.com/sensor_portal/config\"";
+  configPayload += "}";
+  configPayload += "}";
+
+  // Affichage du message de configuration sur la console série
+  Serial.println("Envoi du message de configuration Home Assistant :");
+  Serial.println("Topic : " + configTopic);
+  Serial.println("Payload : " + configPayload);
+
+  // Publier la configuration de l'appareil sur le topic MQTT
+  mqttClient.publish(configTopic.c_str(), configPayload.c_str(), true);
+}
+
+void loop() {
+  if (!mqttClient.connected()) {
+    connectMQTT();
+  }
+
+  // Simuler une mesure de température (remplacer par une mesure réelle)
+  float temperature = analogRead(A0) * (5.0 / 1023.0) * 100.0;
+
+  // Préparer le message d'état
+  String statePayload = "{\"temperature\":" + String(temperature) + "}";
+  String stateTopic = haPrefix + "/sensor/" + sensorName + "/state";
+
+  // Affichage du message d'état sur la console série
+  Serial.println("Envoi du message d'état :");
+  Serial.println("Topic : " + stateTopic);
+  Serial.println("Payload : " + statePayload);
+
+  // Publier la valeur du capteur de température dans Home Assistant
+  mqttClient.publish(stateTopic.c_str(), statePayload.c_str());
+
+  // Gestion du client MQTT
+  mqttClient.loop();
+
+  // Attendre 10 secondes avant la prochaine mesure
+  delay(10000);
+}
+
+void connectWiFi() {
+  Serial.print("Connexion à ");
+  Serial.println(ssid);
+
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(1000);
+    Serial.print(".");
+  }
+
+  Serial.println("\nWiFi connecté");
+  Serial.print("Adresse IP : ");
+  Serial.println(WiFi.localIP());
+}
+
+void connectMQTT() {
+  while (!mqttClient.connected()) {
+    Serial.print("Connexion au serveur MQTT...");
+
+    if (mqttClient.connect("ArduinoClient")) {
+      Serial.println("connecté");
+
+      // Assurez-vous de publier le message de configuration juste après la connexion
+      String configTopic = haPrefix + "/sensor/" + sensorName + "/config";
+      String configPayload = "{";
+      configPayload += "\"device_class\":\"temperature\",";
+      configPayload += "\"state_topic\":\"" + haPrefix + "/sensor/" + sensorName + "/state\",";
+      configPayload += "\"unit_of_measurement\":\"°C\",";
+      configPayload += "\"value_template\":\"{{ value_json.temperature}}\",";
+      configPayload += "\"unique_id\":\"" + uniqueID + "\",";
+      configPayload += "\"device\":{";
+      configPayload += "\"identifiers\":[\"" + deviceName + uniqueID + "\"],";
+      configPayload += "\"name\":\"" + deviceName + "\",";
+      configPayload += "\"manufacturer\":\"Example sensors Ltd.\",";
+      configPayload += "\"model\":\"K9\",";
+      configPayload += "\"serial_number\":\"12AE3010545\",";
+      configPayload += "\"hw_version\":\"1.01a\",";
+      configPayload += "\"sw_version\":\"2024.1.0\",";
+      configPayload += "\"configuration_url\":\"https://example.com/sensor_portal/config\"";
+      configPayload += "}";
+      configPayload += "}";
+
+      Serial.println("Envoi du message de configuration Home Assistant :");
+      Serial.println("Topic : " + configTopic);
+      Serial.println("Payload : " + configPayload);
+
+      // Publier la configuration de l'appareil sur le topic MQTT
+      if (mqttClient.publish(configTopic.c_str(), configPayload.c_str(), true)) {
+        Serial.println("Message de configuration envoyé avec succès");
+      } else {
+        Serial.println("Échec de l'envoi du message de configuration");
+      }
+    } else {
+      Serial.print("Échec de la connexion, rc=");
+      Serial.print(mqttClient.state());
+      Serial.println("; nouvelle tentative dans 5 secondes");
+
+      delay(5000);
+    }
+  }
+}