#include <DHT.h>
#define BLYNK_PRINT Serial
#include <BlynkSimpleEsp8266.h>
#include <Wire.h>               // Include I2C bus library
#include <LiquidCrystal_I2C.h>  // Include LCD-I2C bus library
#define DHTPIN 13              //pin connect DHT
//#define LED D10                  //LED BUILTIN for NodeMCU
#define DHTTYPE DHT11           //if use DHT11 edit to "DHT11"
DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 20, 4);

char auth[] = "4cb8b10967134ba4a5797db23055c7e2";// You should get Auth Token in the Blynk App.
char ssid[] = "TP-Link_Rajib_Deepi";// Your WiFi credentials.
char pass[] = "sony@595";//Set password to "" for open networks.
int MosLowLimit = 30;
int MosHighLimit =60;
int TempLimit = 25;
int automatic = 1;

BLYNK_WRITE(V0) // V5 is the number of Virtual Pin
{
  int AutoValue = param.asInt();

  if (AutoValue == 1)
    {
        automatic = 1;
    }
  else
    {
        automatic = 0;
    }
}

void setup()
{
    Blynk.begin(auth, ssid, pass);
    //timer.setInterval(2000, sendUptime);
    Serial.begin(115200);
   // pinMode(LED,OUTPUT);
    lcd.init();
    lcd.setBacklight(HIGH);
    lcd.setCursor(0,0);
  //lcd.print("********************");
    lcd.print("      Welcome       ");
    lcd.setCursor(0,1);
    lcd.print("         To         ");
    lcd.setCursor(0,2);
    lcd.print("       Smart        ");
    lcd.setCursor(0,3);
    lcd.print(" Agriculture System ");
    delay(2000);

}
void loop()
{
     Blynk.run();
      // *****************Moisture Control code.********************************************
     int val = analogRead(A0);
     String message; // Initializing message
    //syntax:- map(value, fromLow, fromHigh, toLow, toHigh)
     val = map(val, 1023, 180, 0, 100);
     Serial.print("Soil Moisture");
     Serial.println(abs(val));
     // lcd.clear();
     lcd.setCursor(0,1);
     lcd.print("Soil moisture: ");
     lcd.setCursor(15,1);
     lcd.print(String(abs(val)));
     lcd.setCursor(17,1);
     lcd.print("%  ");
    //delay(100);

    //************************Start pump on auto mode*****************************************

     if ((abs(val) <= MosLowLimit)&& (automatic == 1))
        {
            digitalWrite(12, HIGH);
            Serial.println("Pump is On");
            lcd.setCursor(0,2);
            lcd.print("Pump is On          ");
        }

    //******************************Stop pump on auto mode*************************************
      else if((abs(val)>= MosHighLimit) && (automatic == 1))
        {
            digitalWrite(12, LOW);
            Serial.println("Pump is Off");
            lcd.setCursor(0,2);
            lcd.print("Pump is Off         ");
        }


    //*****************Temperature And Humidity read and Display*********************************

    // Reading temperature or humidity takes about 250 milliseconds!
    // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
         int h = dht.readHumidity();
         int t = dht.readTemperature();
         Blynk.virtualWrite(V5, int (h));
         Blynk.virtualWrite(V6, int (t));
    // 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");
                lcd.setCursor(0,0);
                lcd.print("Check the Connection");
            }
         else
            {
                lcd.setCursor(0,0);
                lcd.print("Hum:");
                lcd.setCursor(4,0);
                lcd.print(int(h));
                lcd.setCursor(6,0);
                lcd.print("%  ");
                lcd.setCursor(9,0);
                lcd.print("Tem: ");
                lcd.setCursor(13,0);
                lcd.print(t);
                lcd.setCursor(15,0);
                lcd.print("*C   ");
            }
    //*******************temperature controlled fan inauto mode ************

         if((t > TempLimit)&& (automatic == 1))
            {
                digitalWrite(15, HIGH);//start cooling
                Serial.println("***Cooling On***");
                lcd.setCursor(0,3);
                lcd.print("****Cooling On****  ");
            }
         else if ((t < TempLimit)&& (automatic == 1))
            {
                digitalWrite(15, LOW);
                Serial.println("***Cooling Off***");
                lcd.setCursor(0,3);
                lcd.print("****Cooling Off****  ");
            }

    //*****************LCD update in Manual mode*****************************

        if(automatic == 0)                 //system is in manual update
            {
                if(digitalRead(12) == HIGH)      //check pump is on
                  {
                      Serial.println("Pump is On");
                      lcd.setCursor(0,2);
                      lcd.print("Pump is On          ");
                  }
                else if(digitalRead(12) == LOW)  // check pump is off
                  {
                      Serial.println("Pump is Off");
                      lcd.setCursor(0,2);
                      lcd.print("Pump is Off         ");
                  }

                if(digitalRead(15) == HIGH)     // check fan is ON
                  {
                      Serial.println("***Cooling On***");
                      lcd.setCursor(0,3);
                      lcd.print("****Cooling On****  ");
                  }
                 else if(digitalRead(15) == LOW) // check fan is Off
                  {
                      Serial.println("***Cooling Off***");
                      lcd.setCursor(0,3);
                      lcd.print("****Cooling Off****  ");
                  }
            }
}