SmartIrrigationv1.3

#define TINY_GSM_MODEM_SIM800
#include <TinyGsmClientSIM800.h>
#include <Blynk.h>
#include <TinyGsmClient.h>
#include <BlynkSimpleSIM800.h>
#include <DHT.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <SoftwareSerial.h>

// Default heartbeat interval for GSM is 60
// If you want override this value, uncomment and set this option:
//#define BLYNK_HEARTBEAT 30
#define BLYNK_PRINT Serial    // Comment this out to disable prints and save space

#define DHTPIN 7     // what pin we're connected to
#define DHTTYPE DHT11   // DHT 11
DHT dht(DHTPIN, DHTTYPE);
//Set the pins on the I2C chip used for LCD connections
//ADDR,EN,RS,D4,D5,D6,D7
//LiquidCrystal lcd(0x27,2,3,4,5,6,7); // 0x27 is the default I2C bus address of the backpack-see article
LiquidCrystal_I2C lcd(0x27,2,1,0,4,5,6,7);

int relay=8; // Relay for Pump pin
const int relay1 =  12;      //  Relay for fan pin

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "5cee93f2433849739552a0d0afc852f2";
// Your GPRS credentials
// Leave empty, if missing user or pass
char apn[]  = "internet"; //APN of your service provider
char user[] = "";
char pass[] = "";

SoftwareSerial SerialAT(2, 3); // RX, TX
TinyGsm modem(SerialAT);



void setup() {
 // initialize serial communication at 9600 bits per second:
   Serial.begin(9600);
   pinMode(relay, OUTPUT);

 // Initializing LDC 20x4 module
   lcd.begin (20,4); // 20 x 4 LCD module
   lcd.setBacklightPin(3,POSITIVE); // BL, BL_POL
   lcd.setBacklight(HIGH);
   lcd.setCursor(0,1);
   lcd.print("Welcome To Smart Agriculture System");
   lcd.setCursor(0,2);
   lcd.autoscroll();
   delay(2000);


// set console baud rate
//  Serial.begin(19200);
//  delay(10);

  // Set GSM module baud rate
  //SerialAT.begin(19200);
  //delay(3000);

  // Restart takes quite some time
  // To skip it, call init() instead of restart()
  modem.restart();

  // Unlock your SIM card with a PIN
  //modem.simUnlock("1234");

  Blynk.begin(auth, modem, apn, user, pass);
}


void loop() {
    // *****************Moisture Control code.********************************************
    //read the input on analog pin 0:
      int sensorValue = analogRead(A0);
      Serial.println(sensorValue);
      delay(1000);
    //Getting data in percentage
       int val = analogRead(A0);
       String message=""; // Initializing message
       val = map(val, 1023, 180, 0, 100); //syntax:- map(value, fromLow, fromHigh, toLow, toHigh)
       if (abs(val) <= 30)
          {
          digitalWrite(relay, HIGH);
          message=String("Starting Pump.Soil Moisture % is :");
          message+=val;
          Serial.println(message);
          lcd.clear();
          lcd.setCursor(0,1);
          lcd.print(message);
          lcd.autoscroll();
          delay(5000);

          }

      else if(abs(val)>=60)
          {
          digitalWrite(relay, LOW);
          message=String("**Good News** Turning Off the Pump as Soil Moisture Level has reached to safer level % :: ");
          message+=val;
          Serial.println(message);
          lcd.clear();
          lcd.setCursor(0,1);
          lcd.print(message);
          lcd.autoscroll();
          delay(8000);

          }
      else if(30 <=abs(val)<=60)
          {
          message=String("Current Soil Moisture Level % is :: ");
          message+=val;
          Serial.println(message);
          lcd.clear();
          lcd.setCursor(0,1);
          lcd.print(message);
          lcd.autoscroll();
          delay(3000);
          }

//***********************************************Temperature And Humidity Display*********************************

// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
       float h = dht.readHumidity();
       float t = dht.readTemperature();

// check if returns are valid, if they are NaN (not a number) then something went wrong!

            if (isnan(t) || isnan(h))
            {
            Serial.println("Failed to read from Temp And Humid Senser");
            }
            else {
            lcd.clear();
            lcd.setCursor(0, 1);
            lcd.print("Hum: ");
            lcd.print(h);
            lcd.print("%");
            delay(2000);
            lcd.clear();
            lcd.setCursor(0, 1);
            lcd.print("Tem: ");
            lcd.print(t);
            lcd.print("*C");
            delay(2000);

     if(t > 30){
      digitalWrite(relay1, HIGH);//start cooling
          message=String("Turning On Cooling System as temp is *c :: ");
          message+=t;
          Serial.println(message);
          lcd.clear();
          lcd.setCursor(0,1);
          lcd.print(message);
          lcd.autoscroll();
          delay(8000);}
    else{
      digitalWrite(relay1, LOW);
         message=String("Turning off Cooling System as temp is *c :: ");
          message+=t;
          Serial.println(message);
          lcd.clear();
          lcd.setCursor(0,1);
          lcd.print(message);
          lcd.autoscroll();
          delay(8000);}

 }

 //*******Code for GSM ********************************

 Blynk.run();

            // Check if any reads failed and exit early (to try again).
            if (isnan(h) || isnan(t)) {
              Serial.println("Failed to read from DHT sensor!");
            }
            else{
              // You can delete the following Serial.print's, it's just for debugging purposes
              Serial.print("Humidity: ");
              Serial.print(h);
              Serial.print(" %\t Temperature: ");
              Serial.print(t);
              Serial.print(" *C ");
              Serial.print("Humidity: ");
              Serial.print(h);
              Serial.print(" %\t Temperature: ");
              Serial.print(t);
              Serial.print(" *C ");
                  Blynk.virtualWrite(V1,t);
                    Blynk.virtualWrite(V2,h);
                     Blynk.virtualWrite(V3,abs(val));
                       if(t>30) //set temperatur level for notification
                       {
                        Blynk.email("das.deepika300988@gmail.com", "ESP8266 Alert", "Temperature Increased over limit");
                        Blynk.notify("Temperature Increased over limit (> 35 *c");
            }
                        if(h>60) //set Humid level for notification
                       {
                        Blynk.email("das.deepika300988@gmail.com", "ESP8266 Alert", "Humidity Increased over limit");
                        Blynk.notify("Humidity Increased over limit(> 70%)");
            }
                       if(abs(val)<30) //set Moisture level for notification
                       {
                        Blynk.email("das.deepika300988@gmail.com", "ESP8266 Alert", "Humidity Increased over limit");
                        Blynk.notify("Moisture Reduced to critical limit (< 30 %)");
            }

            }

}