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

const byte backLightPin = 10;
boolean backLight = false;
unsigned long previousMillis;
#define interval 2000

int callswitch;
int call = 0;

char line [64];

void setup() {  
  // set up the number of columns and rows on the LCD 
  lcd.begin(16, 2);

Serial.println("start call simulator");
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(2000);

pinMode(backLightPin, OUTPUT);
analogWrite(backLightPin,255);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print(" ENTER CALL NR");
delay(1000);
analogWrite(backLightPin,0);
}

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

  while (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;
  }

  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");
    }else

  if (call == 0) {
      Serial.println("DISPLAY OFF");
      previousMillis = millis();
      if (millis()-previousMillis < interval) {
        backLight = true;
      }
      else {
        backLight = false;
      }
      digitalWrite(backLightPin, backLight);
  }


}