//Initilaising header files and variables required.
#include <LiquidCrystal.h>
#include <DS1302.h>
LiquidCrystal lcd(A5, A4, 8, 9, 10, 11); DS1302 rtc(A3, 3, 6);
#define RELAY1 4
#define RELAY2 7
#define RELAY3 12
#define RELAY4 13
#define RELAY5 5
int level = A0; int buzzer = 2; int tempPin = A1; int t=0;
int val; float temp; float voltage;
void setup()
{ //Initilaising input and output pins.
      pinMode(level, INPUT);
      pinMode(RELAY1, OUTPUT);
      pinMode(RELAY2, OUTPUT);
      pinMode(RELAY3, OUTPUT);
      pinMode(RELAY4, OUTPUT);
      pinMode(RELAY5, OUTPUT);
      digitalWrite(RELAY5,LOW);
      digitalWrite(RELAY1,LOW);
      digitalWrite(RELAY2,LOW);
      digitalWrite(RELAY3,LOW);
      digitalWrite(RELAY4,LOW);
//Initialising the LCD
 lcd.clear(); 
 lcd.begin(16, 2);
 lcd.setCursor(0, 0);
 lcd.print(" Setup running! "); 
 delay(5000);

//Setting up the DAS - PLX-DAQ
Serial.begin(128000); 
Serial.println("CLEARDATA"); 
Serial.println("CLEARLABEL");

 Serial.println("LABEL,Date,Day,Current Time,Time(in operation)(s),Temperature,Water Level");

//Setting up the RTC-clock module
rtc.halt(false);
 rtc.writeProtect(false);}

void loop()
{ 
  int w=0; int flag1=1;
 w = analogRead(level); //Taking input from the water sensor
 //Taking input from the temperature sensor
 val = analogRead(tempPin);
 voltage = 5 * val / 4095.0; 
 temp = (0.5-voltage) * 100;
 if(w>250) //Checking the water level
 { 
  flag1=0;
 lcd.clear(); 
 lcd.setCursor(0, 0);
 lcd.print("Water ALERT!!!");
 lcd.setCursor(0, 1); 
 lcd.print(flag1);
 digitalWrite(RELAY5,HIGH);
 tone(buzzer, 1000); //Buzzer Alert
 delay(1000); 
 noTone(buzzer); 
 delay(2000); }
 else if(temp>35) //Checking the temperature
 {
   flag1=0; lcd.clear();
    lcd.setCursor(0, 0); 
    lcd.print("Temperature ALERT");
 lcd.setCursor(0, 1);
  lcd.print(flag1);
 tone(buzzer, 1000); //Buzzer Alert
 delay(1000); noTone(buzzer);
 delay(2000); }
 else
 { //Operation in normal operating conditions
 lcd.clear(); 
 lcd.setCursor(0, 0); 
 lcd.print("Plant Operating!");
 lcd.setCursor(0, 1);
 lcd.print(flag1);
 //RELAY sequence
 digitalWrite(RELAY1,HIGH); delay(5000);
 digitalWrite(RELAY1,LOW);
 digitalWrite(RELAY2,HIGH); delay(5000);
 digitalWrite(RELAY2,LOW);
 digitalWrite(RELAY3,HIGH); delay(5000);
 digitalWrite(RELAY3,LOW);
 digitalWrite(RELAY4,HIGH); delay(5000);
 digitalWrite(RELAY4,LOW); }
 long int milli_time = millis(); //Calculating the time since the start of operation
 t=milli_time/1000;
 //The following code is used to initialise the RTC module
 //Commented once used
 /*Serial.println(rtc.getTimeStr()); Serial.println(rtc.getDOWStr());
 Serial.println(rtc.getDateStr());
 Serial.println("LABEL,Date,Day,Current Time,Time(in operation),Temperature,Water Level"); */
 //Printing into the Data Aquistion System
 Serial.print("DATA,DATE,"); Serial.print(rtc.getDOWStr());
 Serial.print(","); Serial.print(rtc.getTimeStr());
 Serial.print(","); Serial.print(t);
 Serial.print(","); Serial.print(temp);
 Serial.print(","); Serial.print(w);
 Serial.println();
  } 
// (1) Water and temperature sensor, 
// (2) Arduino UNO board,
//  (3)Relay Module, 
// (4) External power supply & Voltage Regulation block,
//  (5) LCD,Buzzers and LED’s (Loads),
//  (6) Real Time Clock (RTC) Module and
//   (7) PLXDAQ.