#include<PinChangeInterrupt.h>
   #define ledpin 13
   #define selpin 12
   #define inc 2
   #define dec 3
 


   String arr[]={"Start","Score","Help","Credit","Exit"};
   int pointer=-1;
   bool select=false;

   void setup() {
Serial.begin(9600);


  // put your setup code here, to run once:
pinMode(ledpin, OUTPUT);
pinMode(selpin, OUTPUT);

pinMode(inc, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(inc),Scrolling,FALLING);

pinMode(dec, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(dec),Selecting,FALLING);
}

 void loop() {
// //   // put your main code here, to run repeatedly:
// // digitalWrite(ledpin, HIGH);
// // delay(Delay);
 
// // digitalWrite(ledpin, LOW);
// // delay(Delay);
 }
void Scrolling(){

int flag= digitalRead(inc);
digitalWrite(ledpin, HIGH);
delay(1000);
digitalWrite(ledpin, LOW);
delay(1000);

if(flag==LOW){
if(select==false){

if(pointer ==4)
pointer=0;
else pointer=pointer+1;
}

if(select==true)
Serial.println("<Menu "+ (String)pointer +">_"+"< "+arr[pointer]+">_"+"YES");
else Serial.println("<Menu "+ (String)pointer +">_"+"< "+arr[pointer]+">_"+"NO");
}}
 
void Selecting(){

int flag= digitalRead(dec);
digitalWrite(ledpin, HIGH);
delay(1000);
digitalWrite(ledpin, LOW);
delay(1000);

if(flag==LOW){
 select=!select;
 if(select){
digitalWrite(selpin, HIGH);
 Serial.println("<Menu "+ (String)pointer +">_"+"< "+arr[pointer]+">_"+"YES");}
 else {digitalWrite(selpin, LOW);
  Serial.println("<Menu "+ (String)pointer +">_"+"< "+arr[pointer]+">_"+"NO");
 }
 


}}