mqttled/mqttled.ino

#include "mqttled.h"

// C'est moche mais c'est pour récuperer EVERY_N_SECONDS :)
#include <FastLED.h>
#include <ESP8266WiFi.h>
#include <PubSubClient.h>

// WIFI
WiFiClient espClient;

// MQTT
char message_buff[100];
PubSubClient client(espClient);


void setup() {
  Serial.begin(SERIAL_SPEED);
  Serial.println("\nresetting");

// WIFI
  setupWifi();

  // MQTT
  client.setServer(mqtt_server, mqtt_port);
  client.setCallback(callbackMQTT);
  testConnectMQTT();
  client.subscribe("homeassistant/switch1");

  pinMode(LED_PIN, OUTPUT);
}

// WIFI
void setupWifi() {
  Serial.println();
  Serial.print("Connexion a ");
  Serial.print(wifi_ssid);
  WiFi.begin(wifi_ssid, wifi_password);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  
  Serial.println();
  Serial.print("IP : ");
  Serial.println(WiFi.localIP());
}

// MQTT
void testConnectMQTT() {
  while (!client.connected()) {
    Serial.print("Connexion au serveur MQTT... ");
    if (client.connect("ESP8266Client", mqtt_user, mqtt_password)) {
      Serial.println("OK");
    } else {
      Serial.print("KO, erreur : ");
      Serial.print(client.state());
      Serial.println(", on attend 5 secondes avant de recommencer");
      delay(5000);
    }
  }
}

void callbackMQTT(char* topic, byte* payload, unsigned int length) {
  unsigned int i = 0;
  Serial.print("Received [" + String(topic) + "] : ");

  for(i = 0; i < length; i++) {
    message_buff[i] = payload[i];
  }
  message_buff[i] = '\0';
  String msgString = String(message_buff);
  Serial.print(msgString);
  
  if (msgString == "ON") {
    digitalWrite(LED_PIN, HIGH);
  } else {
    digitalWrite(LED_PIN, LOW);
  }
}

void loop() {
  testConnectMQTT();
  client.loop();
  
  EVERY_N_SECONDS(180) {
    Serial.print("MQTT Subscribe refresh");
    client.subscribe("homeassistant/select1");
    Serial.println(" done");
  }
}