NodeMCU Home Automation (ESP8266)

/************************************************************************************************************************************************************************                                              
 * - Author               : BELKHIR Mohamed                        *                                               
 * - Profession           : (Electrical Ingineer) MEGA DAS owner   *                                                                                              
 * - Main purpose         : Industrial Application                 *                                                                                 
 * - Copyright (c) holder : All rights reserved                    *
 * - License              : BSD 2-Clause License                   * 
 * - Date                 : 11/01/2019                             *
 * ***********************************************************************************************************************************************************************/
 
 /*********************************** NOTE **************************************/
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:

// * Redistributions of source code must retain the above copyright notice, this
//  list of conditions and the following disclaimer.

// * Redistributions in binary form must reproduce the above copyright notice,
//  this list of conditions and the following disclaimer in the documentation
//  and/or other materials provided with the distribution.

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED

                                                                               
//---------------------------------------Do not remove these lines
#define BLYNK_PRINT Serial
#define TCP_MSS whatever
#define LWIP_IPV6 whatever
#define LWIP_FEATURES whatever
#define LWIP_OPEN_SRC whatever
//---------------------------------------
#include <SPI.h>                                                           // Include library for SPI communication
#include <ESP8266WiFi.h>                                                   // Include library for ESP module to use the integrated ESP module of the NodeMCU board
#include <BlynkSimpleEsp8266.h>                                            // Import the Bylnk library to use its function which will facilitate the data transfer from the app
#include "DHT.h"                                                           // Needed library to interface the Temperature and humidity sensor
#include <Wire.h>                                                          // Include the IC communication module
#include <BH1750.h>                                                        // Include the light sensor library
#define DHTPIN D3                                                          // Define the digital pin use for Temperature and humidity sensor 
#define DHTTYPE DHT11                                                      // Define type of the Temperature and humidity sensor
DHT MyDHTSensor(DHTPIN, DHTTYPE);                                          // Create the Temperature and humidity sensor instance
BH1750 MyLightSensor;                                                      // Create the light sensor instance

char auth[] = "You will receive this in an Email from Blynk";              // You will receive the "auth" token in your E-mail address when you create the Bylnk app so just copy and past it

char ssid[] = "Name of your Wifi network";                                 // Write the name "SSID" of your Wifi network 
char pass[] = "Wifi password";                                             // Insert the password of your Wifi network

BlynkTimer timer;                                                          // Timer use to synchronise the data transfer to the app

//----------------------------------------------This function will receive the data from the app and update the status of the appropriate pin
BLYNK_WRITE(V1)
{
  int pinValue = param.asInt();                                            // assigning incoming value from pin V1 to a variable
  digitalWrite(D4,pinValue);                                               // Write the value to the appropriate pin
}
//----------------------------------------------
//----------------------------------------------This function will receive the data from the app and update the status of the appropriate pin
BLYNK_WRITE(V2)
{
  int pinValue = param.asInt();                                            // assigning incoming value from pin V1 to a variable
  digitalWrite(D5,pinValue);                                               // Write the value to the appropriate pin
}
//----------------------------------------------
//----------------------------------------------This function will receive the data from the app and update the status of the appropriate pin
BLYNK_WRITE(V3)
{
  int pinValue = param.asInt();                                            // assigning incoming value from pin V1 to a variable
  digitalWrite(D6,pinValue);                                               // Write the value to the appropriate pin
}
//----------------------------------------------
//----------------------------------------------This function will receive the data from the app and update the status of the appropriate pin
BLYNK_WRITE(V4)
{
  int pinValue = param.asInt();                                            // assigning incoming value from pin V1 to a variable
  digitalWrite(D7,pinValue);                                               // Write the value to the appropriate pin
}
//----------------------------------------------
//----------------------------------------------This function will receive the data from the app and update the status of the appropriate pin
BLYNK_WRITE(V7)
{
  int pinValue = param.asInt();                                            // assigning incoming value from pin V1 to a variable
  analogWrite(D8,pinValue);                                                // Write the value to the appropriate pin
  Serial.println(pinValue);
}
//----------------------------------------------

void setup()
{
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);                                           // Start the Wifi connction
  MyDHTSensor.begin();                                                     // Start the Temperature and Humidity sensor
  Wire.begin();                                                            // Start the IC bus connection
  MyLightSensor.begin();                                                   // Start the Light sensor
  //----------------------------- Define the pin mode of each used pin of your NodeMCU
  pinMode(D0,INPUT);
  pinMode(D4,OUTPUT);
  pinMode(D5,OUTPUT);
  pinMode(D6,OUTPUT);
  pinMode(D7,OUTPUT);
  pinMode(D8,OUTPUT);
  //-----------------------------
  digitalWrite(D4,HIGH);
  digitalWrite(D5,HIGH);
  digitalWrite(D6,HIGH);
  digitalWrite(D7,HIGH);
  digitalWrite(D8,LOW);
}

void loop()
{
  Blynk.run();
  timer.run(); // Initiates BlynkTimer
  delay(500);
  uint16_t lux = MyLightSensor.readLightLevel();                         // Read Light sensor value (Lux)
  float h = MyDHTSensor.readHumidity();                                  // Read Humidity in (%)
  float t = MyDHTSensor.readTemperature();                               // Read temperature as Celsius (the default)
//  if (isnan(h) || isnan(t)) 
//  {
//    Serial.println("Failed to read from DHT sensor!");
//    return;
//  }
//-------------------------------------- Send data to the Bylnk app
  Blynk.virtualWrite(V5, t);
  Blynk.virtualWrite(V6, h);
  Blynk.virtualWrite(V8, lux);
//--------------------------------------
Serial.println(lux);
}