Hydroponics System Using Arduino

//--------- Library for lcd ---------//
#include<LiquidCrystal.h>
//--------- Library for RTC ---------//
#include <Wire.h>
#include "ds3231.h"
//--------- Library for DHT ---------//
#include "DHT.h"
//--------- RTC define ---------//
#define BUFF_MAX 128
char recv[BUFF_MAX];
unsigned int recv_size = 0;
unsigned long prev, interval = 1000;
//--------- DHT define ---------//
#define DHTPIN A0
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE);
//--------- Lcd pin define ---------//
LiquidCrystal lcd (2, 3, 4, 5, 6, 7);
//--------- Switch define ---------//
int menu = A14;
int up = A13;
int down = A12;
int right = A11;
int left = A15;
//--------- Output pins -----------//
int relay1 =A10;
int relay2 =A9;
//--------- Theshold Variables --------//
int temp=32;
int temp2=30;
int humid=70;
int humid2=80;
int mode=1;
//--------- Global variables ---------//
int h = 0;
int i = -1;
int j = 10;
char tempF[6]; 
char humF[6];
int hum=0;
int tem=0;
long previousMillis = 0;    
long currentMillis = 0;    
int k6;
long mdelay = 1000; 
//---------Storage states of button for debounce function ---------//
boolean current_menu = LOW;
boolean last_menu = LOW;
boolean current_up = LOW;
boolean last_up = LOW;
boolean current_down = LOW;
boolean last_down = LOW;
boolean current_left = LOW;
boolean last_left = LOW;
boolean current_right = LOW;
boolean last_right = LOW;
//--------- Function prototype ---------//
void Dht();
void Rtc();
void key_status();
void display_menu(int);
void time_period(int);
//---------Flag Variable----------//
int a,b,c,z=1,e=0,e1=0,f=0,f1=0,frequency,duration,ut=0,rt=1,ut1=0,ut2=0,ut3=0,ut4=0,k1=0,k2=0,p1,p2,et=0,ft=0,m1=0,m2=0,m3=0,z1=0,z2=0,gh1=0,gh2=10,gh3=1;
void setup() //--------- Put your setup code here, to run once ---------//
{
  //--------- Set baud rate ---------//
 /* Serial.begin(9600);
  //--------- Set relay as output ---------//
  pinMode(relay1, OUTPUT);
  pinMode(relay2,OUTPUT);
  //--------- Set RTC ---------//
  Wire.begin();
  DS3231_init(DS3231_INTCN);
  memset(recv, 0, BUFF_MAX);
  //--------- Set DHT ---------//
  dht.begin();*/
  //--------- Set lcd size ---------//
  lcd.begin(20, 4);
/*  //---------Initialize Relay to Down---------//
  digitalWrite(relay1,HIGH);
  digitalWrite(relay2,HIGH);*/
  //--------- Welcome text print ---------//
  lcd.setCursor(0, 0);
  lcd.print("WELCOME TO RENERTEK");
  lcd.setCursor(0, 1);
  lcd.print(" CONTCT:");
  lcd.print("9902358503");
  lcd.setCursor(0, 2);
  lcd.print(" renertek@gmail.com");
  lcd.setCursor(0, 3);
  lcd.print("  www.renertek.com");
  delay(4000);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("    POWERED BY");
  lcd.setCursor(0, 1);
  lcd.print("   NAVAPRAVARTAN");
  lcd.setCursor(0, 2);
  lcd.print(" CONTACT:");
  lcd.print("9051872093");
  delay(2000);
  lcd.clear();
}
boolean debounce(boolean last, int pin)
{
  boolean current = digitalRead(pin);
  if(last != current)
  {
    delay(5);
    current = digitalRead(pin);
  }
  return current;
}
void loop() //--------- Put your main code here, to run repeatedly ---------//
{
 /*  Rtc();
   Dht();
   gh1=ut1+12*ut2;
   gh2=ut3+12*ut4;
   lcd.setCursor(0, 4);
   lcd.print("    Press Select ");
   mode_operation(3);
   key_status();
   if(current_right==1)
   {
     a=1;
   }
   while(digitalRead(right)==1);
   while(a) //MAIN MENU
   {
      
            key_status();
            if(current_down==1)
              {
                 z++;
              }
              while(digitalRead(down)==1);
            key_status();
            if(current_up==1)
              {
                 z--;
              }
              while(digitalRead(up)==1);
             mode=z;   
             b=1;
  //------------------------------------------------------------------------------------------//    
                              if(b==1&&z==1)
                              lcd.clear();
                               while(b==1&&z==1)
                              {
                                  t1();  
                                  key_status();        //for up
                               if(current_up==1)
                                 {
                                    e++;
                                 }
                                
                                 key_status();        //for down.
                               if(current_down==1)
                                 {
                                    e--;
                                 }
                                if(e<0)
                                 e=120;
                                if(e>120)
                                 e=0;
                               key_status();        //for back..
                               if(current_left==1)
                                 {
                                    z++;
                                    b=0;
                                    temp=e;
                                  }
                                while(digitalRead(left)==1); 
                              key_status();
                                if(current_right==1)
                                {
                                  z1=1;
                                  b=0;
                                  temp=e;
                                }
                                while(digitalRead(right)==1); 
                               }
//-------------------------------------------------------------------------------------------------------//
                              if(b==1&&z==2)
                              lcd.clear();
                               while(b==1&&z==2)
                              { 
                                h1();
                                key_status();        //for up
                               if(current_up==1)
                                 {
                                    f++;
                                 }  
                                 key_status();        //for down.
                               if(current_down==1)
                                 {
                                    f--;
                                 }
                                if(f<0)
                                 f=100;
                                if(f>100)
                                 f=0;
                                key_status();        //for back..
                                if(current_left==1)
                                 {
                                    z++;
                                    b=0;
                                    humid=f;
                                 }
                                while(digitalRead(left)==1); 
                                key_status();
                                if(current_right==1)
                                {
                                  z1=1;
                                  b=0;
                                  humid=f;
                                }
                                while(digitalRead(right)==1); 
                               delay(100);
                              
                               }
//--------------------------------------------------------------------------------------//  
                             if(b==1&&z==3)
                              lcd.clear();                      
                              while(b==1&&z==3)
                              {
                                tim1();
                            key_status();         //for up
                               if(current_up==1)
                                 {
                                   if(rt==1) 
                                    ut++;
                                   if(rt==2)
                                    ut1++;
                                   if(rt==3)
                                    ut2++;
                                   if(rt==4) 
                                    ut3++;
                                   if(rt==5)
                                    ut4++;
                                 }
                               key_status();        //for down
                               if(current_down==1)
                                 { if(rt==1)
                                    ut--;
                                   if(rt==2)
                                    ut1--;
                                   if(rt==3)
                                    ut2--;
                                   if(rt==4)
                                    ut3--;
                                   if(rt==5)
                                    ut4--;
                                 }
                               key_status();        //for left
                               if(current_menu==1)
                                 {
                                    rt++;
                                 }
                                while(digitalRead(menu)==1); 
                                
                                if(rt>5)
                                 rt=1;
                                if(ut<0)
                                 ut=99;
                                if(ut>99)
                                 ut=0;
                                if(ut1<0)
                                 ut1=12;
                                if(ut1>12)
                                 ut1=0;
                                if(ut2<0)
                                 ut2=1;
                                if(ut2>1)
                                 ut2=0;
                                if(ut3<0)
                                 ut3=12;
                                if(ut3>12)
                                 ut3=0;  
                                if(ut4<0)
                                 ut4=1;
                                if(ut4>1)
                                 ut4=0; 
                               key_status();         //for back..
                               if(current_left==1)
                                 {  
                                    z++;
                                    b=0;
                                 }
                                while(digitalRead(left)==1); 
                                key_status();
                                if(current_right==1)
                                {
                                  z1=1;
                                  b=0;
                                }
                                while(digitalRead(right)==1);  
                                delay(100); 
                               }
                             b=1;
//-------------------------------------------------------------------------------------------------------//
                           while(b==1&&z1==1)
                              {
                                lcd.print("Time Base CTR:"); 
                                yes_no(m1);
                                lcd.setCursor(0, 1);
                                lcd.print("Temp Base CTR:"); 
                                yes_no(m2);
                                lcd.setCursor(0, 2);
                                lcd.print("Humd Base CTR:"); 
                                yes_no(m3);
                                lcd.setCursor(4, 3);
                                lcd.print("PRESS NEXT");
                                delay(100);
                                lcd.clear();
                                key_status();
                                if(current_menu==1)
                                {
                                  if(z2==0)
                                  m1=flip(m1);
                                  if(z2==1)
                                  m2=flip(m2);
                                  if(z2==2)
                                  m3=flip(m3);
                                }
                                while(digitalRead(menu)==1);   
                                key_status();
                                if(current_left==1)
                                {
                                  z2++;
                                }
                                while(digitalRead(left)==1);  
                                key_status();
                                if(current_right==1)
                                {
                                  a=0;
                                  b=0;
                                  z1=0;
                                }
                                while(digitalRead(right)==1);  
                                if(z2>2)
                                 z2=0;
                               }
 //-----------------------------------------------------------------------------------------//                              
                     if(z>3)
                      z=1;  
                     if(z<1)
                      z=3;
                     lcd.clear();
      }*/
}

//------------time_period------------//

void time_period(int n,int i1,int i2,int i3)
{ int x,y,z,v,w;
  struct ts t;
  DS3231_get(&t);
 if ((Serial.available() <= 0)) 
  {
  x=t.hour;
  y=t.min;
  z=x*60+y;
  v=z+n;
  }
 
  w=1;
  p2=1;
  while(w==1&&p2==1)
  { delay(100);
    DS3231_get(&t);
   Rtc();
   Dht();
   if(i1==1)
   mode_operation(1);
   if(i2==1)
   mode_operation(2);
    if ((Serial.available() <= 0)) 
     {
       x=t.hour;
       y=t.min;
       z=x*60+y;
     }
     if(z==v)
        w=0;
   key_status();
   if(current_right==1)
   {
     p2=0;
     a=1;
   }
 //  while(digitalRead(right)==1);
  }
}
//----------Operate Mode-------------//
void mode_operation(int ch)
{
  switch(ch)
  {
    case 1:  if(temp<tem)
             {
               digitalWrite(relay1,LOW);
               digitalWrite(relay2,LOW);
             }
             else
             {
               digitalWrite(relay1,HIGH);
               digitalWrite(relay2,HIGH);
             }
            break;
    case 2: if(humid>hum)
            {
              digitalWrite(relay1,LOW);
              digitalWrite(relay2,LOW);
            }
            else
            {
              digitalWrite(relay1,HIGH); 
              digitalWrite(relay2,HIGH); 
            }
            break;
    case 3: 
            
            time_period(60,m2,m3,m1);
            Mul_delay(ut,m2,m3,m1);
            break;
 
  }
}

//--------- Keyboard functon -------//
void key_status()
{
  current_menu = debounce(last_menu, menu); //--------- Debounce for menu button ---------//
  current_up = debounce(last_up, up); //--------- Debounce for up button ---------//
  current_down = debounce(last_down, down); //--------- Debounce for down button ---------//
  current_left = debounce(last_left, left); //--------- Debounce for left button ---------//
  current_right = debounce(last_right, right); //--------- Debounce for right button ---------//
  last_menu = LOW;
  last_up = LOW;
  last_down = LOW;
  last_left = LOW;
  last_right = LOW;
}
//--------- DHT function ---------//
void Dht()
{
  float temperature, humidity;
  humidity = dht.readHumidity();
  temperature = dht.readTemperature();
  delay(100); 
  char tempF[6]; 
  char humF[6];
  dtostrf(temperature, 5, 1, tempF);
  dtostrf(humidity, 2, 0, humF);
  lcd.setCursor(0, 2);
  lcd.print("T:"); 
  tem=(int)((tempF[1]-48)*10+(tempF[2]-48));
  lcd.print(tem);
  lcd.print((char)223);
  lcd.print("C ");
  lcd.print(" H: ");
  hum=(int)((humF[0]-48)*10+(humF[1]-48));
  lcd.print(hum);
  lcd.print("%");
}
//-----------------YES/NO------------------//
void yes_no(int i)
{
  if(i==1)
   lcd.print("YES");
  else
   lcd.print("NO");
}
//---------------FLIP SWITCH----------------//
 int flip(int i)
{
  if(i==0)
   return 1;
  else if(i==1)
   return 0;
}
//--------- Time and Date function ---------//
void Rtc()
{
  unsigned long now = millis();
    struct ts t;
    if ((now - prev > interval) &&(Serial.available() <= 0)) 
    {
        DS3231_get(&t);
        lcd.setCursor(0, 0);
        lcd.print("Date:");
        lcd.print(t.mday);
        lcd.print(":");
        lcd.print(t.mon);
        lcd.print(":");
        lcd.print(t.year);
        lcd.print(" ");
        lcd.setCursor(0, 1);
        if(t.hour>12)
        {
         lcd.print("Time:");
         lcd.print(t.hour-12);
         lcd.print(":");
         lcd.print(t.min);
         lcd.print(":");
         lcd.print(t.sec);
         lcd.print(" ");
         lcd.setCursor(13, 1);
         lcd.print("P.M.");
        }
        else
        {
         lcd.print("Time:");
         lcd.print(t.hour);
         lcd.print(":");
         lcd.print(t.min);
         lcd.print(":");
         lcd.print(t.sec);
         lcd.print(" ");
         lcd.setCursor(13, 1);
         lcd.print("A.M. "); 
        }
        
        if((gh1 < t.hour)&&(t.hour < gh2))
        {
          gh3 = 1;
        }
        else
        { 
          gh3 = 0;
        }
        prev = now;
    } 
}
void h1()
{
  float temperature, humidity;
  humidity = dht.readHumidity();
  temperature = dht.readTemperature();
  delay(100); 
  char tempF[6]; 
  char humF[6];
  dtostrf(temperature, 5, 1, tempF);
  dtostrf(humidity, 2, 0, humF);
  lcd.setCursor(5, 0);
  lcd.print("HUMI:");
  lcd.setCursor(10, 0);
  tem=(int)((tempF[1]-48)*10+(tempF[2]-48));
  hum=(int)((humF[0]-48)*10+(humF[1]-48));
  lcd.print(hum);
  lcd.print("%");
  lcd.setCursor(1, 1);
  lcd.print("Humd Base CTR:");
  yes_no(m3);
  lcd.setCursor(3, 2);
  lcd.print("WATER ON:<");
  lcd.print(f);
  lcd.print("%    ");
  lcd.setCursor(0, 3);
  lcd.print("USE:SCROLL,U,D,NEXT");
}
void t1()
{
  float temperature, humidity;
  humidity = dht.readHumidity();
  temperature = dht.readTemperature();
  delay(100); 
  char tempF[6]; 
  char humF[6];
  dtostrf(temperature, 5, 1, tempF);
  dtostrf(humidity, 2, 0, humF);
  lcd.setCursor(5, 0);
  lcd.print("Temp:");
  lcd.setCursor(10, 0);
  tem=(int)((tempF[1]-48)*10+(tempF[2]-48));
  lcd.print(tem);
  lcd.print((char)223);
  lcd.print("C");
  hum=(int)((humF[0]-48)*10+(humF[1]-48));
  lcd.setCursor(1, 1);
  lcd.print("Temp Base CTR:");
  yes_no(m2);
  lcd.setCursor(3, 2);
  lcd.print("WATER ON:>");
  lcd.print(e);
  lcd.print((char)223);
  lcd.print("C   ");
  lcd.setCursor(0, 3);
  lcd.print("USE:SCROLL,U,D,NEXT");
}
void tim1()
{
  unsigned long now = millis();
    struct ts t;
    if ((now - prev > interval)&&(Serial.available() <= 0)) 
    {
        DS3231_get(&t);
        lcd.setCursor(0, 0);
        if(t.hour>12)
        {
         lcd.print(" Time:");
         lcd.print(t.hour-12);
         lcd.print(":");
         lcd.print(t.min);
         lcd.print(":");
         lcd.print(t.sec);
         lcd.print(" ");
         lcd.setCursor(14, 0);
         lcd.print("P.M.");
        }
        else
        {
         lcd.print(" Time:");
         lcd.print(t.hour);
         lcd.print(":");
         lcd.print(t.min);
         lcd.print(":");
         lcd.print(t.sec);
         lcd.print(" ");
         lcd.setCursor(14, 0);
         lcd.print("A.M."); 
        }
       prev = now;
    } 
   lcd.setCursor(1, 1);
   lcd.print("Temp Base CTR:");
   yes_no(m1);
   lcd.setCursor(0,2);
   lcd.print("ON:");
   if(ut<10)
   {lcd.print(ut);
   lcd.print(" ");}
   else
    lcd.print(ut);
   lcd.setCursor(5,2);
   lcd.print("S/H");
   lcd.setCursor(10,2);
   if(ut1<10)
   {lcd.print(ut1);
    lcd.print(" ");
   }
   else
    lcd.print(ut1);
   if(ut2==0)
    lcd.print("AM");
   else
    lcd.print("PM");
   lcd.print("To");
    lcd.setCursor(16,2);
   if(ut3<10)
   {lcd.print(ut3);
    lcd.print(" ");
   }
   else
    lcd.print(ut3);
   if(ut4==0)
    lcd.print("AM");
   else
    lcd.print("PM");
   lcd.setCursor(0, 3);
   lcd.print("USE:SCROLL,U,D,NEXT");
}
//-------------------------delay-----------------------//
void Mul_delay(int i,int i1,int i2,int i3)
{ mdelay = i*1000;
 unsigned long previousMillis = millis();
  k6=1;
  p1=1;
 while(k6==1&&p1==1)
 { currentMillis = millis();
   Rtc();
   Dht();
   if(i1==1)
   mode_operation(1);
   if(i2==1)
   mode_operation(2);
  if((currentMillis - previousMillis) < mdelay) 
   {
       if(i3==1 && gh3==1)
       { digitalWrite(relay1, LOW);
         digitalWrite(relay2, LOW);
       }
     }
   else
   k6=0;
  key_status();
  if(current_right==1)
   {
     p1=0;
     a=1;
    }
 }
  digitalWrite(relay1, HIGH);
  digitalWrite(relay2, HIGH);
  
}