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+#include <FS.h>                   //this needs to be first, e folosit de salvarea credentialelor pe FS

+#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>

+#include <ESP8266HTTPClient.h>

+#include <ESP8266httpUpdate.h>

+

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

+#define PIR D1 //  pinul de date D1 la care se conecteaza PIRul

+

+bool pir1,lastVAL;

+float t_pir1;

+

+char mqtt_user[9]; //le va lua din FS

+char mqtt_devid[5]; //le va lua din FS

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

+char mqttSUB[22];

+char espName[13];

+char mqttESP[22];

+char mqttLWT[22];

+

+const String model = "NodeMCU PIR";

+const String ver = "v2.0.0";

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

+const int mqttPort = 1883;

+long loopTimer = 1000; // miliseconds - debug

+long lastMsg = 0;

+float loopTemp = 0;

+String mqttMessage;

+

+WiFiClient espClient;

+PubSubClient client(espClient);

+bool readConfigFile();

+

+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 (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() {

+  while (String(mqtt_user)==""){

+    #if DEBUG

+    Serial.println("Invalid user!");

+    #endif

+    delay(99999999);

+  }

+  

+  // 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

+    

+        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(PIR,INPUT_PULLUP);

+

+  #if DEBUG

+  Serial.begin(115200);

+  #endif

+

+  // Mount the filesystem

+  bool result = SPIFFS.begin();

+  #if DEBUG

+  //Serial.println("SPIFFS opened: " + result);

+  #endif

+  

+  readConfigFile(); //citesc user si devid din memorie

+  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

+ 

+// procedura de software update via WEB

+   if (mqttMessage == "update")

+   {

+        String msg="Software update: ";

+        t_httpUpdate_return ret; 

+        //ESPhttpUpdate.rebootOnUpdate(false);

+        ret = ESPhttpUpdate.update("http://update.clickhome.ro/releu/arduino.bin");  

+        switch(ret) {

+           case HTTP_UPDATE_FAILED:

+               msg.concat(" eroare:");

+               msg.concat(ESPhttpUpdate.getLastError());

+               msg.concat(" motiv:");

+               msg.concat(ESPhttpUpdate.getLastErrorString().c_str());

+               break;

+           case HTTP_UPDATE_NO_UPDATES:

+               msg.concat(" no update.");

+               break;

+           case HTTP_UPDATE_OK:

+               msg.concat(" success.");

+               break;

+        }

+        #if DEBUG

+        Serial.println(msg);

+        #endif

+   }

+

+  // reset la ESP

+  if (mqttMessage == "reset")

+  {

+      String lastwords="Am fost resetat ...";

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

+      delay (3000);

+      ESP.reset();

+      delay (5000);

+  }

+

+}

+

+bool readConfigFile() {

+  // this opens the config file in read-mode

+  File f = SPIFFS.open("/config.json", "r");

+  

+  if (!f) {

+    #if DEBUG

+    Serial.println("Configuration file not found");

+    #endif

+    return false;

+  } else {

+    // we could open the file

+    size_t size = f.size();

+    // Allocate a buffer to store contents of the file.

+    std::unique_ptr<char[]> buf(new char[size]);

+

+    // Read and store file contents in buf

+    f.readBytes(buf.get(), size);

+    // Closing file

+    f.close();

+    // Using dynamic JSON buffer which is not the recommended memory model, but anyway

+    // See https://github.com/bblanchon/ArduinoJson/wiki/Memory%20model

+    DynamicJsonBuffer jsonBuffer;

+    // Parse JSON string

+    JsonObject& json = jsonBuffer.parseObject(buf.get());

+    // Test if parsing succeeds.

+    if (!json.success()) {

+      #if DEBUG

+      Serial.println("JSON parseObject() failed");

+      #endif

+      return false;

+    }

+    #if DEBUG

+    json.printTo(Serial);

+    #endif

+    strcpy(mqtt_user, json["mqtt_user"]);

+    strcpy(mqtt_devid, json["mqtt_devid"]);

+  }

+  return true;

+}

+

+void loop()

+{

+  if (!client.connected()) 

+  {

+    reconectez();

+  }

+  client.loop();

+

+  if (digitalRead(PIR)==1){ //verific daca nu e falsa alarma

+      if (t_pir1==0)

+        t_pir1=millis();

+      if (millis() - t_pir1 > 1500)

+        pir1=1; //este intradevar miscare

+  }else{

+      if (t_pir1>0)  t_pir1=0;

+      pir1=0;

+  }

+

+  if (pir1!=lastVAL){

+    lastVAL=pir1;

+    #if DEBUG

+    Serial.println(pir1);

+    #endif

+  }

+}

+