#include <LiquidCrystal.h>
//RS, E, DB4, DB5, DB6, DB7
LiquidCrystal lcd(A1, A0, 6, 7, 8, 9);

const unsigned long Interval = 15000; //time set to switch off the display backligth
unsigned long previousTime = 0;

const int backLightPin = 10;

int call = 0;

void setup(){
  pinMode(backLightPin, OUTPUT);

  lcd.begin(16, 2);
  Serial.begin(9600);

  digitalWrite(backLightPin, HIGH);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print(" B747 by RF R&D");
  lcd.setCursor(0,1);
  lcd.print(" START CALL SIM");
  delay(1000);
  lcd.clear();
  lcd.setCursor(0,1);
  lcd.print(" ENTER CALL NR");
}

void loop() {
  Calling();
  //timing loop
  unsigned long currentTime = millis(); 
  unsigned long currentTime2 = millis();
  
  if (call == 0) {
  if (currentTime - previousTime >= Interval) {
    digitalWrite(backLightPin, LOW);

    previousTime = currentTime;

    Callmenu();    
  }
  else {

  }
  }
  if (currentTime2 - previousTime <= Interval) {
    Callmenu();
  }
}

void Callmenu() {
Serial.println("ENTER CALL NR:");

  if (Serial.available() == 0) {
  }
  int menuChoice = Serial.parseInt();
  switch (menuChoice) {
    case 1:
      // directory selection
      Serial.println("01 DIRECTORY ");
      call = 1;
      break;
    case 2:
      //video in use
      Serial.println("02 VIDEO IN USE");
      call = 2;
      break;
    case 3:
      //PA in use
      Serial.println("03 PA IN USE");
      call = 3;
      break;
    case 4:
      //Cabin Ready
      Serial.println("04 CABIN READY");
      call = 4;
      break;
    case 5:
      //pilot alert
      Serial.println("PILOT ALERT");
      call = 5;
      break;
    case 6:
      //priority
      Serial.println("PRIORITY");
      call = 6;
      break;
    case 7:
      //party line
      Serial.println("PARTY LINE");
      call = 7;
      break;
    case 11:
      //Door 1 left
      Serial.println("DOOR 1 LEFT");
      call = 11;
      break;
    case 12:
      //Door 2 left
      Serial.println("DOOR 2 LEFT");
      call = 12;
      break;
    case 13:
      //Door 3 left
      Serial.println("DOOR 3 LEFT");
      call = 13;
      break;
    case 14:
      //Door 4 left
      Serial.println("DOOR 4 LEFT");
      call = 14;
      break;
    case 15:
      //Door 5 left
      Serial.println("DOOR 5 LEFT");
      call = 15;
      break;
    case 16:
      //Upper Deck Door left
      Serial.println("U/D LEFT DOOR");
      call = 16;
      break;
    case 21:
      //Door 1 right
      Serial.println("DOOR 1 RIGHT");
      call = 21;
      break;
    case 22:
      //Door 2 right
      Serial.println("DOOR 2 RIGHT");
      call = 22;
      break;
    case 23:
      //Door 3 right
      Serial.println("DOOR 3 RIGHT");
      call = 23;
      break;
    case 24:
      //Door 4 right
      Serial.println("DOOR 4 RIGHT");
      call = 24;
      break;
    case 25:
      //Door 5 right
      Serial.println("DOOR 5 RIGHT");
      call = 25;
      break;
    case 26:
      //Upper Deck Door right
      Serial.println("U/D RIGHT DOOR");
      call = 26;
      break;
    case 31:
      //Pilot
      Serial.println("PILOT");
      call = 31;
      break;
    case 32:
      //Priority STA
      Serial.println("PRIORITY STA");
      call = 32;
      break;
    case 33:
      //Priority Pilot
      Serial.println("PRIORITY PILOT");
      call = 33;
      break;
    case 34:
      //Purser
      Serial.println("PURSER");
      call = 34;
      break;
    case 36:
      //upper Deck Stairs
      Serial.println("U/D STAIRS");
      call = 36;
      break;
    case 41:
      //PA first class
      Serial.println("PA FIRST CL");
      call = 41;
      break;
    case 42:
      //PA business class
      Serial.println("PA BUSINESS");
      call = 42;
      break;
    case 43:
      //PA Economy class
      Serial.println("PA ECONOMY CL");
      call = 43;
      break;
    case 44:
      //PA crew rest
      Serial.println("PA CREW REST");
      call = 44;
      break;
    case 46:
      //PA all areas
      Serial.println("PA ALL AREAS");
      call = 46;
      break;
    case 47:
      //PA priority
      Serial.println("PA PRIORITY");
      call = 47;
      break;
    case 51:
      //Door 2 galley
      Serial.println("DOOR 2 GALLEY");
      call = 51;
      break;
    case 52:
      //main deck galley
      Serial.println("M/D GALLEY");
      call = 52;
      break;
    case 53:
      //Door 4 galley
      Serial.println("DOOR 4 GALLEY");
      call = 53;
      break;
    case 55:
      //All call
      Serial.println("ALL CALL");
      call = 55;
      break;
    case 56:
      //Upper deck galley
      Serial.println("U/D GALLEY");
      call = 56;
      break;
    case 61:
      //Door 5 crew rest (pax only);
      Serial.println("DR5 CREW REST");
      call = 61;
      break;
    case 66:
      //Crew rest pilots
      Serial.println("CR REST PILOT");
      call = 66;
      break;
    case 67:
      //cabin ready (inhibits call light)
      Serial.println("CABIN READY");
      call = 67;
      break;
    case 71:
      //ground crew call
      Serial.println("GND CREW CALL");
      call = 71;
      break;
    case 72:
      //cargo call (combi only)
      Serial.println("CARGO CALL");
      call = 72;
      break;
    case 73:
      //Upper deck crew rest
      Serial.println("U/D CREW REST");
      call = 73;
      break;
    case 74:
      //Main deck crew rest
      Serial.println("M/D CREW REST");
      call = 74;
      break;
    case 77:
      //pilot alert
      Serial.println("PILOT ALERT");
      call = 77;
      break;  
    case 0:
      Serial.println("DSPY OFF");
      call = 0;
      break; 
    default:
    break;
  }

}

void Calling() {
  unsigned long currentTime = millis();
    Serial.print("call:");Serial.println(call);
  if(call == 1)
  {
    Serial.println("DIRECTORY");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("DIRECTORY     01");
      previousTime = currentTime;

    }else
  if(call == 2)
  {
   Serial.println("VIDEO IN USE");  //melding

    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("VIDEO IN USE  02"); 
  }else
  if (call == 3)
  {
    Serial.println("PA IN USE");  //melding
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("PA IN USE     03");
  }else
  if (call == 4)
  {
    Serial.println("CABIN READY"); //melding
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("CABIN READY   04");
      previousTime = currentTime;
  }else
  if (call == 5)
  {
    Serial.println("PILOT ALERT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("PILOT ALERT   05");
      previousTime = currentTime;
  }else
  if (call == 7)
  {
    Serial.println("PARTY LINE");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("PARTY LINE    07");
      previousTime = currentTime;
  }else
  if (call == 11)
  {
    Serial.println("DOOR 1 LEFT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("DOOR 1 LEFT   11");
      previousTime = currentTime;
  }
  if (call == 12)
  {
    Serial.println("DOOR 2 LEFT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("DOOR 2 LEFT   12");
      previousTime = currentTime;
  }else
  if (call == 13)
  {
    Serial.println("DOOR 3 LEFT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("DOOR 3 LEFT   13");
      previousTime = currentTime;
  }else
  if (call == 14)
  {
    Serial.println("DOOR 4 LEFT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor (0, 1);
      lcd.println("DOOR 4 LEFT   14");
      previousTime = currentTime;
  }else
  if (call == 15)
  {
    Serial.println("DOOR 5 LEFT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("DOOR 5 LEFT   15");
      previousTime = currentTime;
  }else
  if (call == 16)
  {
    Serial.println("U/D LEFT DOOR");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("U/D LEFT DOOR 16");
      previousTime = currentTime;
  }else
  if (call == 21)
  {
    Serial.println("DOOR 1 RIGHT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("DOOR 1 RIGHT  21");
      previousTime = currentTime;
  }else
  if (call == 22)
  {
    Serial.println("DOOR 2 RIGHT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("DOOR 2 RIGHT  22");
      previousTime = currentTime;
  }else
  if (call == 23)
  {
    Serial.println("DOOR 3 RIGHT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("DOOR 3 RIGHT  23");
      previousTime = currentTime;
  }else
  if (call == 24)
  {
    Serial.println("DOOR 4 RIGHT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("DOOR 4 RIGHT  24");
      previousTime = currentTime;
  }else
  if (call == 25)
  {
    Serial.println("DOOR 5 RIGHT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("DOOR 5 RIGHT  25");
      previousTime = currentTime;
  }else
  if (call == 26)
  {
    Serial.println("U/D RIGHT DOOR");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("U/D RGHT DOOR 26");
      previousTime = currentTime;
  }else
  if (call == 31)
  {
    Serial.println("PILOT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("PILOT         31");
      previousTime = currentTime;
  }else
  if (call == 32)
  {
    Serial.println("PRIORITY STA");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("PRIORITY STA  32");
      previousTime = currentTime;
  }else
  if (call == 33)
  {
    Serial.println("PRIORTY PILOT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("PRIORTY PILOT  33");
      previousTime = currentTime;
  }else
  if (call == 34)
  {
    Serial.println("PURSER");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("PURSER        34");
      previousTime = currentTime;
  }else
  if (call == 36)
  {
    Serial.println("U/D STAIRS");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("U/D STAIRS    36");
      previousTime = currentTime;
  }else
  if (call == 41)
  {
    Serial.println("PA FIRST CL");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("PA FIRST CL   41");
      previousTime = currentTime;
  }else
  if (call == 42)
  {
    Serial.println("PA BUSINESS");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("PA BUSINESS   42");
      previousTime = currentTime;
  }else
  if (call == 43)
  {
    Serial.println("PA CREW REST");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("PA CREW REST  43");
      previousTime = currentTime;
  }else
  if (call == 44)
  {
    Serial.println("PA ALL AREAS");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("PA ALL AREAS  44");
      previousTime = currentTime;
  }else
  if (call == 47)
  {
    Serial.println("PA PRIORITY");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("PA PRIORITY   47");
      previousTime = currentTime;
  }else
  if (call == 51)
  {
    Serial.println("DOOR 2 GALLEY");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("DOOR 2 GALLEY 51");
      previousTime = currentTime;
  }else

  if (call == 52)
  {
    Serial.println("M/D GALLEY");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("M/D GALLEY    52");
      previousTime = currentTime;
  }else
  if (call == 53)
  {
    Serial.println("DOOR 4 GALLEY");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("DOOR 4 GALLEY 53");
      previousTime = currentTime;
  }else
  if (call == 55)
  {
    Serial.println("ALL CALL");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("ALL CALL      55");
      previousTime = currentTime;
  }else
  if (call == 56)
  {
    Serial.println("U/D GALLEY");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("U/D GALLEY    56");
      previousTime = currentTime;
  }else
  if (call == 61)
  {
    Serial.println("DR 5 CREW REST");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("DR5 CREW REST 61");
      previousTime = currentTime;
  }else
  if (call == 66)
  {
    Serial.println("CR REST PILOT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("CR REST PILOT 66");
      previousTime = currentTime;
  }else
  if (call == 67)
  {
    Serial.println("CABIN READY");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("CABIN READY   67");
      previousTime = currentTime;
  }else
  if (call == 71)
  {
    Serial.println("GND CREW CALL");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("GND CREW CALL 71");
      previousTime = currentTime;
  }else
  if (call == 72)
  {
    Serial.println("CARGO CALL");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("CARGO CALL    72");
      previousTime = currentTime;
  }else
  if (call == 73)
  {
    Serial.println("U/D CREW REST");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("U/D CREW REST 73");
      previousTime = currentTime;
  }else
  if (call == 74)
  {
    Serial.println("M/D CREW REST");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("M/D CREW REST 74");
      previousTime = currentTime;
  }else
  if (call == 77)
  {
    Serial.println("PILOT ALERT");
    digitalWrite(backLightPin, HIGH);
    lcd.clear();
      lcd.setCursor(0, 1);
      lcd.println("PILOT ALERT   77");
      previousTime = currentTime;
  }else
  if (call == 0) {
      Serial.println("DISPLAY OFF");
    }
    else{}
}