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+#include <ESP8266WiFi.h>

+#include <PubSubClient.h>

+#include <WiFiManager.h>        //https://github.com/tzapu/WiFiManager

+#include <ArduinoJson.h>          //https://github.com/bblanchon/ArduinoJson pentru salvarea credentialelor in eprom

+#include <WiFiClient.h> 

+#include <OneWire.h>

+

+//ESP8266-01 nu are suficienta memorie pt update http

+const char* mqtt_user="64x35up";

+const char* mqtt_devid="5566";

+#define DEBUG 1 //0=off 1=on

+#define RELAY 2 //  pinul de date 

+

+/********** NU edita mai jos ******************/

+char mqttPassword[15]; //urmatoarele le va genera cu functia gen

+char mqttSUB[22];

+char espName[13];

+char mqttESP[22];

+char mqttRELAY[23];

+char mqttLWT[22];

+

+const String model = "ESP8266 Releu";

+const String ver = "v1.0.0";

+const char* mqttServer = "mqtt.clickhome.ro";

+const int mqttPort = 1883;

+long loopTimer = 900000; // miliseconds - by default trimite la 15 minute

+long lastMsg = 0;

+float loopTemp = 0;

+String mqttMessage;

+

+WiFiClient espClient;

+PubSubClient client(espClient);

+

+void generate_vars(){

+  strcpy (mqttPassword, "8219CH");

+  strcat (mqttPassword, mqtt_user);

+

+  strcpy (espName, mqtt_user);

+  strcat (espName, "-");

+  strcat (espName, mqtt_devid);

+

+  strcpy (mqttSUB, "cmnd/");

+  strcat (mqttSUB, espName);

+  strcat (mqttSUB, "/ESP");

+

+  strcpy (mqttESP, "stat/");

+  strcat (mqttESP, espName);

+  strcat (mqttESP, "/ESP");

+

+  strcpy (mqttRELAY, "stat/");

+  strcat (mqttRELAY, espName);

+  strcat (mqttRELAY, "/RELAY");

+

+  strcpy (mqttLWT, "tele/");

+  strcat (mqttLWT, espName);

+  strcat (mqttLWT, "/LWT");

+}

+

+String ipToString(IPAddress ip){

+  String s="";

+  for (int i=0; i<4; i++)

+    s += i  ? "." + String(ip[i]) : String(ip[i]);

+  return s;

+}

+String getMacAddress() {

+  byte mac[6];

+  WiFi.macAddress(mac);

+  String cMac = "";

+  for (int i = 0; i < 6; ++i) {

+    cMac += String(mac[i],HEX);

+    if(i<5)

+    cMac += "-";

+  }

+  cMac.toUpperCase();

+  return cMac;

+}

+

+void reconectez() {

+  

+  // ma conectez la mqtt server

+  while (!client.connected()) {

+    client.setServer(mqttServer, mqttPort);

+    #if DEBUG

+    Serial.print("AtloopTempting MQTT connection...");

+    #endif

+    // Incerc sa ma reconectez cu LWT din 5 in 5 secunde

+    if (client.connect(espName, mqtt_user, mqttPassword, mqttLWT, 1, 1, "Offline")) {

+      #if DEBUG

+      Serial.println("connected");

+      #endif

+      client.publish(mqttLWT,"Online",TRUE);

+        // trimit informatii utile cand ma conectez

+        String esp_info = "{\"ESPMac\":\"";

+        esp_info += getMacAddress();

+        esp_info += "\", \"IPAddress\":\"";

+        esp_info += ipToString(WiFi.localIP());    

+        esp_info += "\"}";       

+        String netinfo = "{\"Module\":\"";

+        netinfo += String (model);

+        netinfo += "\", \"Version\":\"";

+        netinfo += String (ver);

+        netinfo += "\"}";            

+        

+        client.publish(mqttESP, netinfo.c_str(),TRUE);

+        #if DEBUG

+        Serial.println(netinfo);

+        #endif

+        client.publish(mqttESP, esp_info.c_str(),TRUE);

+        #if DEBUG

+        Serial.println(esp_info);

+        #endif

+    

+        // citesc starea si o trimit cand se reconecteaza si la boot

+        String json = "{\"Relay\":\"";

+        json += String (digitalRead(RELAY));

+        json += "\"}";

+        client.publish(mqttRELAY, json.c_str(),TRUE);

+

+        client.subscribe(mqttSUB);

+    } else {

+      #if DEBUG

+      Serial.print("failed, rc=");

+      Serial.print(client.state());

+      Serial.println(" try again in 60 seconds");

+      #endif

+      // Wait 60 seconds before retrying

+      delay(60000);

+    }

+  }

+}

+

+

+void setup()

+{

+  pinMode(RELAY,OUTPUT);

+

+  #if DEBUG

+  Serial.begin(115200);

+  #endif

+

+  generate_vars(); //genereaza topicurile de mqtt in baza mqtt_user si mqtt_devid

+

+  // ma conectez la AP via wifi

+   WiFiManager wifi;

+   wifi.setConfigPortalTimeout(120); // a timeout so the ESP doesn't hang waiting to be configured, for instance after a power failure

+   wifi.setTimeout(180); // sta AP 3 minute apoi se reseteaza din nou

+   if (!wifi.autoConnect("ClickHome")) {

+     #if DEBUG

+     Serial.println("timeout - going to sleep");

+     #endif

+  }

+  delay(200);

+

+  reconectez();

+  client.setCallback(getMessage); //setez functia care parseaza mesajele venite prin mqtt

+

+}

+

+void getMessage(char* topic, byte* payload, unsigned int length) {

+  float t = 0;

+  mqttMessage="";

+  #if DEBUG

+  Serial.print("Message arrived in topic: ");

+  Serial.println(topic);

+  Serial.print("Message:");

+  #endif

+  for (int i = 0; i < length; i++) {

+    mqttMessage += (char)payload[i];

+  }

+  #if DEBUG

+  Serial.println(mqttMessage);

+  #endif

+ 

+  // daca a primit on

+  if (mqttMessage == "ON")

+  {

+    #if DEBUG

+    Serial.println("Pornesc releu");

+    #endif

+    digitalWrite(RELAY,HIGH);

+    String json = "{\"Relay\":\"1\"}";

+    client.publish(mqttRELAY, json.c_str(),TRUE);

+  }  

+  if (mqttMessage == "OFF")

+  {

+     long now = millis(); 

+    #if DEBUG

+    Serial.println("Opresc releu");

+    Serial.println(now);

+    #endif

+    digitalWrite(RELAY,LOW);

+    String json = "{\"Relay\":\"0\"}";

+    client.publish(mqttRELAY, json.c_str(),TRUE);

+  }

+

+  if (mqttMessage == "stare")

+  {

+    // citesc starea si o trimit

+    String json = "{\"Relay\":\"";

+    json += String (digitalRead(RELAY));

+    json += "\"}";

+    client.publish(mqttRELAY, json.c_str(),TRUE);

+  }

+}

+

+void loop()

+{

+  if (!client.connected()) 

+  {

+    reconectez();

+  }

+  client.loop();

+  long now = millis(); 

+  if (now - lastMsg > loopTimer) 

+  {

+    lastMsg = now;

+    #if DEBUG

+    Serial.println("Nu fac nimic in bucla");

+    #endif

+  }

+}

+