backup.txt

// include the library code:
#include <LiquidCrystal.h>
#include <SPI.h>
#include <MFRC522.h>

#define SW1 2
#define SW2 3
#define SW3 0

#define SENSOR_1 A0
#define SENSOR_2 A1
#define SENSOR_3 A2
#define SENSOR_4 A3

#define GALAL A5


#define SS 10
#define RST 9

boolean page_1 = HIGH;

boolean change_1 = LOW;
boolean change_2 = LOW;
boolean change_3 = LOW;

boolean enable_s1 = HIGH;
boolean enable_s2 = HIGH;
boolean enable_s3 = HIGH;
boolean enable_s4 = HIGH;

boolean masked = HIGH;
boolean passed = LOW;
boolean auth = LOW;

int s1, s2, s3, s4;

int col = 0;

int i = 0;

int avg;

unsigned long wa2t;
unsigned char _7arf;

// those hold the last 10 readings AKA 5 seconds
int values_1[10] = {0};
int values_2[10] = {0};
int values_3[10] = {0};
int values_4[10] = {0};

String password;
String content;

String dots = "";
String waiting;

String ref_password;

String mido_password  = "abcac";
String galal_password = "aaaaa";
String world_password = "baba";


byte letter;

char key;

char logoff = ' ';

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(9, 8, 7, 6, 5, 4);

MFRC522 RFID(SS, RST);   // Create MFRC522 instance.


void setup()
{
  //Serial.begin(115200);
  
  pinMode(SW1, INPUT_PULLUP);
  pinMode(SW2, INPUT_PULLUP);
  pinMode(SW3, INPUT_PULLUP);

  SPI.begin();      // Initiate  SPI bus
  
  RFID.PCD_Init();   // Initiate MFRC522

  
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);

  lcd.print("Welcome Dr.Tamer!");
  delay(1000);
  lcd.clear();
}

void loop()
{
  enable_s1 = HIGH;
  enable_s2 = HIGH;
  enable_s3 = HIGH;
  enable_s4 = HIGH;
  
  while(!(auth))
  {
    delay(200);
    
    i++;

    if(i%4 == 0)
      dots = ".";

    if(i%4 == 1)
      dots = "..";

    if(i%4 == 2)
      dots = "...";

    if(i%4 == 3)
    {
      dots = "";
    }
    
    lcd.setCursor(3, 0);
    lcd.print("waiting    ");

    lcd.setCursor(10, 0);
    lcd.print(dots);
    
    content = "";


   if(analogRead(GALAL) < 300)
   {
      auth = HIGH;
      
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("Hello World!");

      ref_password = world_password;
      delay(1000);
   }
   
    // Look for new cards
    if ( !(RFID.PICC_IsNewCardPresent())) 
    {
      return;
    }
    
    // Select one of the cards
    if ( !(RFID.PICC_ReadCardSerial()))
    {
      return;
    }
    
    //Show UID on serial monitor
    //Serial.print("UID tag :");
  
    
    //loop for printing UID
    
    for (byte i = 0; i < RFID.uid.size; i++) 
    {
       //Serial.print(RFID.uid.uidByte[i] < 0x10 ? " 0" : " ");
       //Serial.print(RFID.uid.uidByte[i], HEX);
       content.concat(String(RFID.uid.uidByte[i] < 0x10 ? " 0" : " "));
       content.concat(String(RFID.uid.uidByte[i], HEX));
    }
    
    //Serial.println();
    //Serial.print("Message : ");
    content.toUpperCase();
    // Our UID
    if (content.substring(1) == "AC E4 94 35") //change here the UID of the card/cards that you want to give access
    {
      auth = HIGH;
      
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("Hello Galal!");
      
      ref_password = galal_password;
      delay(1000);
    }
   
   else if (content.substring(1) == "76 2B 19 7E")
   {
      auth = HIGH;
      
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("Hello Mido!");

      ref_password = mido_password;
      delay(1000);
   }
  
   else
   {
    auth = LOW;

    lcd.clear();
    
    lcd.print("Denied Access!");

    lcd.setCursor(0,1);
    lcd.print("Dialling 911...");
    delay(1000);
   }
  }

  lcd.clear();
  lcd.print("Enter Password:");
  lcd.setCursor(0,1);

  while(auth)
  {
    while(!(passed))
    {
      change_1 = digitalRead(SW1);
      change_2 = digitalRead(SW2);
      change_3 = digitalRead(SW3);
      
      if(change_1 == LOW)
      {
        wa2t = millis();

        lcd.setCursor(col, 1);

        while(digitalRead(SW1) == LOW);
        delay(50); // debounce
        
        // hena bada2 el faty
        _7arf++;
      }


      if (((millis() - wa2t) > 500) && (_7arf > 0))
      {
        if(_7arf%4 == 1)
        {
          key = 'a';
        }

        else if(_7arf%4 == 2)
        {
          key = 'b';
        }

        else if(_7arf%4 == 3)
        {
          key = 'c';
        }

        else if(_7arf%4 == 0)
        {
          key = 'd';
        }
        
        password+= key;

        _7arf = 0;

        if(masked)
        {
          lcd.print('*');
        }

        if(!(masked))
        {
          lcd.print(key);
        }
                  
        col++;
        
        while(digitalRead(SW1) == LOW);
        delay(50); // debounce
  
        if(password == ref_password)
        {
          delay(1000);
          passed = HIGH;
  
          lcd.clear();
  
          lcd.setCursor(3, 0);
          lcd.print("Authorized");
          lcd.setCursor(5, 1);
          lcd.print("Access");
          delay(3000);
          lcd.clear();

          col = 0;
          masked = HIGH;
        }
      }
      
      if(change_2 == LOW)
      {
        if (password.length() > 0)
        {
          col--;
          lcd.setCursor(col, 1);
          lcd.print(' ');
            
          password = password.substring(0, (password.length() - 1));
          //Serial.println(password);
        }
        
        while(digitalRead(SW2) == LOW);
        delay(50); // debounce
      }

      
      if(change_3 == LOW)
      {
        if(masked)
        {
          lcd.setCursor(0,0);
          lcd.print("Enter Password:");
  
          lcd.setCursor(0, 1);
          lcd.print(password);
  
          masked = LOW;
        }
  
        else if(!(masked))
        {
          lcd.setCursor(0,0);
          lcd.print("Enter Password:");
  
          lcd.setCursor(0, 1);
          
          for(i=0; i < password.length(); i++)
          {
            lcd.print('*');
          }
  
          masked = HIGH;
        }
        
        while(digitalRead(SW3) == LOW)
        {
          delay(500);
          
          if(digitalRead(SW3) == LOW)
          {
            lcd.clear();
            auth = LOW;
            masked = HIGH;
            password = "";
            col = 0;
            
            delay(2000);
            return;
          }
        }
        
        delay(50); // debounce
      }
    }
  
  
  
    
    while(passed)
    {
      change_1 = digitalRead(SW1);
      change_2 = digitalRead(SW2);
      change_3 = digitalRead(SW3);
      
      if(change_1 == LOW)
      {
        page_1 = !(page_1);
        
        while(digitalRead(SW1) == LOW);
    
        lcd.clear();
      }
          
      if((change_2 == LOW) && (!(page_1)))
      {
        // hena bada2 el faty
        wa2t = millis();
        _7arf++;

        while(digitalRead(SW2) == LOW);
        delay(50);
      }

      if (((millis() - wa2t) > 500) && (_7arf > 0))
      {
        if(_7arf%4 == 1)
        {
          enable_s1 = !(enable_s1);
        }

        else if(_7arf%4 == 2)
        {
          enable_s2 = !(enable_s2);
        }

        else if(_7arf%4 == 3)
        {
          enable_s3 = !(enable_s3);
        }

        else if(_7arf%4 == 0)
        {
          enable_s4 = !(enable_s4);
        }

        _7arf = 0;
      }
    
      if((change_2 == LOW) && (page_1))
      {
        if (enable_s1)
        {
          s1++;
        }
        
        while(digitalRead(SW2) == LOW);
    
        lcd.clear();
      }
      
      if(page_1)
      {
        delay(500);

        // sensor 1
        for(i=9; i>=0; i--)
        {
          values_1[i] = values_1[i-1];
        }

        if(enable_s1)
          values_1[0] = analogRead(SENSOR_1);

        if(!(enable_s1))
          values_1[0] = 0;
      
        avg = 0;
        
        for(i=0; i<10; i++)
        {
          avg += values_1[i];
        }
        
        if (enable_s1 == HIGH)
        {
          lcd.setCursor(0,0);
          lcd.print("    ");
          lcd.setCursor(0,0);
          lcd.print(avg/10);
        }
        
        else if (enable_s1 == LOW)
        {
          lcd.setCursor(0,0);
          lcd.print("    ");
          lcd.setCursor(0,0);
          lcd.print("DIS");
        }
        

        // sensor 2
        for(i=9; i>=0; i--)
        {
          values_2[i] = values_2[i-1];
        }

        if(enable_s2)
          values_2[0] = analogRead(SENSOR_2);

        if(!(enable_s2))
          values_2[0] = 0;
      
        avg = 0;
        
        for(i=0; i<10; i++)
        {
          avg += values_2[i];
        }
        
        if (enable_s2 == HIGH)
        {
          lcd.setCursor(12,0);
          lcd.print("    ");
          lcd.setCursor(12,0);
          lcd.print(avg/10);
        }
        
        else if (enable_s2 == LOW)
        {
          lcd.setCursor(12,0);
          lcd.print("    ");
          lcd.setCursor(12,0);
          lcd.print("DIS");
        }

        
        // sensor 3
        for(i=9; i>=0; i--)
        {
          values_3[i] = values_3[i-1];
        }

        if(enable_s3)
          values_3[0] = analogRead(SENSOR_3);

        if(!(enable_s3))
          values_3[0] = 0;
      
        avg = 0;
        
        for(i=0; i<10; i++)
        {
          avg += values_3[i];
        }
        
        if (enable_s3 == HIGH)
        {
          lcd.setCursor(0,1);
          lcd.print("    ");
          lcd.setCursor(0,1);
          lcd.print(avg/10);
        }
        
        else if (enable_s3 == LOW)
        {
          lcd.setCursor(0,1);
          lcd.print("    ");
          lcd.setCursor(0,1);
          lcd.print("DIS");
        }

        
        // sensor 4
        for(i=9; i>=0; i--)
        {
          values_4[i] = values_4[i-1];
        }

        if(enable_s4)
          values_4[0] = analogRead(SENSOR_4);

        if(!(enable_s4))
          values_4[0] = 0;
      
        avg = 0;
        
        for(i=0; i<10; i++)
        {
          avg += values_4[i];
        }
        
        if (enable_s4 == HIGH)
        {
          lcd.setCursor(12,1);
          lcd.print("    ");
          lcd.setCursor(12,1);
          lcd.print(avg/10);
        }
        
        else if (enable_s4 == LOW)
        {
          lcd.setCursor(12,1);
          lcd.print("    ");
          lcd.setCursor(12,1);
          lcd.print("DIS");
        }
      }



    
      else if(!(page_1))
      {
        // sensor 1
        if (enable_s1 == HIGH)
        {
          lcd.setCursor(0,0);
          lcd.print("EN1 ");
        }
    
        else if (enable_s1 == LOW)
        {
          lcd.setCursor(0,0);
          lcd.print("DIS1");
        }


        // sensor 2
        if (enable_s2 == HIGH)
        {
          lcd.setCursor(12,0);
          lcd.print("EN2 ");
        }
    
        else if (enable_s2 == LOW)
        {
          lcd.setCursor(12,0);
          lcd.print("DIS2");
        }

        // sensor 3
        if (enable_s3 == HIGH)
        {
          lcd.setCursor(0,1);
          lcd.print("EN3 ");
        }
    
        else if (enable_s3 == LOW)
        {
          lcd.setCursor(0,1);
          lcd.print("DIS3");
        }


        // sensor 4
        if (enable_s4 == HIGH)
        {
          lcd.setCursor(12,1);
          lcd.print("EN4 ");
        }
    
        else if (enable_s4 == LOW)
        {
          lcd.setCursor(12,1);
          lcd.print("DIS4");
        }
      }


      if((change_3 == LOW) && (page_1))
      {
        lcd.clear();
        lcd.print("Log Out?");

        lcd.setCursor(0,1);
        lcd.print("(Y/N)");

        while(HIGH)
        {
          change_1 = digitalRead(SW1);
          change_2 = digitalRead(SW2);

          if(change_1 == LOW)
          {
            while(digitalRead(SW1));
            delay(50);
    
            lcd.clear();
    
            auth = LOW;
            passed = LOW;
            password = "";
            
            delay(2000);
            break;
          }

          if(change_2 == LOW)
          {
            break;
          }
        }
        
        while(digitalRead(SW3) == LOW);
        delay(50);
        
      }
    }
  }
}