//Librerie
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C  lcd(0x27,2,1,0,4,5,6,7); // 0x27 dichiarazione display

//dichiarazione variabili
int rainPin = A0;
int whiteLED = 7;
int greenLED = 6;
int yellowLED = 5;
int redLED = 4;
int Buzzer = 3;
int flag=0;
int flag2=0;

byte p100[8] = {  //tabella cella del display tutta accesa
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
};

byte p0[8] = {  //tabella cella del display tutta spenta
  B00000,
  B00000,
  B00000,
  B00000,
  B00000,
  B00000,
  B00000,
  B00000,
};



void setup(){
  
  //dichiarazione Pin
  
  pinMode(rainPin, INPUT);
  pinMode(greenLED, OUTPUT);
  pinMode(Buzzer, OUTPUT);
  pinMode(redLED, OUTPUT);
  pinMode(whiteLED, OUTPUT);
  pinMode(yellowLED, OUTPUT);
  digitalWrite(greenLED, LOW);
  digitalWrite(redLED, LOW);
  Serial.begin(9600);
    
  // Attivazione modulo LCD
    
  lcd.begin (16,2); // 16 x 2
  lcd.setBacklightPin(3,POSITIVE);
  lcd.setBacklight(HIGH);
  lcd.createChar(0, p100);  //creazione funzione riempimento cella display
  lcd.createChar(1, p0);    //creazione funzione svuotamento cella display
}



void loop() {           //Inizio programma

  
   int sensorValue = analogRead(rainPin);    //Cattura segnale analogico in una variabile
   Serial.print(sensorValue);                //Stampa del segnale anologico sul monitor seriale
   Serial.println("");
  
  if(sensorValue>805) {      //condizione quando il sensore è "asciutto"

    //Spegnimento di tutti i led e del buzzer
    digitalWrite(whiteLED, LOW);
    digitalWrite(greenLED, LOW);
    digitalWrite(yellowLED, LOW);
    digitalWrite(redLED, LOW);
    digitalWrite(Buzzer, LOW);

    //Stampa della scritta sul Display
    lcd.home ();
    lcd.print("INSERISCI ACQUA "); 
    lcd.setCursor (0,1);
    lcd.print("               "); 
     
    
    }  //fine condizione sensore "asciutto"


    if(sensorValue>=775 && sensorValue<=795) {      //Primo Livello
     
     //Accensione LED ROSSO e spegnimento del resto
     digitalWrite(redLED, HIGH);
     digitalWrite(yellowLED, LOW);
     digitalWrite(greenLED, LOW);
     digitalWrite(whiteLED, LOW);
     digitalWrite(Buzzer, LOW);
     
     lcd.home (); 
     lcd.print("Livello: Basso  "); //Stampa
     lcd.setCursor (0,1);           // spostamento cursore
     lcd.write(byte (0));           //richiamo funzione per scrivere la tacca
     lcd.setCursor (1,1);
     lcd.write(byte (0));
     lcd.setCursor (2,1);
     lcd.print("              "); //svuotamento altre celle
    
    } //FINE PRIMO LIVELLO

     if(sensorValue>=630 && sensorValue<=735) {   //SECONDO LIVELLO
     
     //Accensione LED Rosso-Giallo e spegnimento resto
     digitalWrite(redLED, HIGH);
     digitalWrite(yellowLED, HIGH);
     digitalWrite(Buzzer, LOW);
     digitalWrite(greenLED, LOW);
     digitalWrite(whiteLED, LOW);
        

     lcd.home (); 
     lcd.print("Livello: Medio "); //Stampa
     lcd.setCursor (0,1);         //spostamento cursore
     lcd.write(byte (0));
     lcd.setCursor (1,1);
     lcd.write(byte (0));
     lcd.setCursor (2,1);
     lcd.write(byte (0));
     lcd.setCursor (3,1);
     lcd.write(byte (0));
     lcd.setCursor (4,1);
     lcd.print("            ");   
     
    }

    if(sensorValue>=530 && sensorValue<=570) {  //595
     digitalWrite(greenLED, HIGH);
     digitalWrite(redLED, HIGH);
     digitalWrite(yellowLED, HIGH);
     digitalWrite(whiteLED, LOW);
     digitalWrite(Buzzer, LOW);


     lcd.home (); // set cursor to 0,0
     lcd.print("Livello: Alto  "); 
     lcd.setCursor (0,1);        // go to start of 2nd line
     lcd.write(byte (0));
     lcd.setCursor (1,1);
     lcd.write(byte (0));
     lcd.setCursor (2,1);
     lcd.write(byte (0));
     lcd.setCursor (3,1);
     lcd.write(byte (0));
     lcd.setCursor (4,1);
     lcd.write(byte (0));
     lcd.setCursor (5,1);
     lcd.write(byte (0));
     lcd.setCursor (6,1);
     lcd.print("          ");  
    }

   if(sensorValue>=471 && sensorValue<=505) {   
     if(flag==0) { 
      digitalWrite(whiteLED, HIGH); 
      flag=1;
      digitalWrite(Buzzer, HIGH);
      }
      
     else { 
     digitalWrite(whiteLED, LOW);
     digitalWrite(Buzzer, LOW); 
     flag=0;
     }
     digitalWrite(greenLED, HIGH);
     digitalWrite(redLED, HIGH);
     digitalWrite(yellowLED, HIGH);

     lcd.home (); // set cursor to 0,0
     lcd.print("TROPPA ACQUA! "); 
     lcd.setCursor (0,1);        // go to start of 2nd line
     lcd.write(byte (0));
     lcd.setCursor (1,1);
     lcd.write(byte (0));
     lcd.setCursor (2,1);
     lcd.write(byte (0));
     lcd.setCursor (3,1);
     lcd.write(byte (0));
     lcd.setCursor (4,1);
     lcd.write(byte (0));
     lcd.setCursor (5,1);
     lcd.write(byte (0));
     lcd.setCursor (6,1);
     lcd.write(byte (0));
     if(flag2==0) {
      lcd.setCursor (7,1);
      lcd.write(byte (0));
      flag2=1;
     }
    else {
      lcd.setCursor (7,1);
      lcd.write(byte (1));
      flag2=0;
     }
     
     
     delay(140);
    }
    if(sensorValue<=470) {
     if(flag==0) {  
     digitalWrite(greenLED, HIGH);
     digitalWrite(redLED, HIGH);
     digitalWrite(yellowLED, HIGH);
     digitalWrite(whiteLED, HIGH);
     digitalWrite(Buzzer, HIGH);
     flag=1;
     }
     else { 
     digitalWrite(whiteLED, LOW);
     digitalWrite(greenLED, LOW);
     digitalWrite(redLED, LOW);
     digitalWrite(yellowLED, LOW);
     digitalWrite(Buzzer, LOW); 
     flag=0;
     }
     delay(140);
   }
      
        
   

}