#include<LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

const int ButtonPin1 = 9;


#define inputCLK 6
#define inputDT 7

int piezo = 8;

int notes[] = {261, 294, 329, 349, 392, 440, 493, 523};
//order: c d e f g a b C

 int counter = 0;
 int currentStateCLK;
 int previousStateCLK;

 int B1State = 0;

 bool piezoMode;
 void setup() {
   pinMode (inputCLK,INPUT);
   pinMode (inputDT,INPUT);
   pinMode(ButtonPin1, INPUT);

  Serial.begin (9600);

   lcd.begin(16,2);
   lcd.print("position:" );
 }
 void loop() {

   B1State = digitalRead(ButtonPin1);

   if (B1State == HIGH) {
    randomNumber();

   }
   else {
   previousStateCLK = digitalRead(inputCLK);
   currentStateCLK = digitalRead(inputCLK); // Reads the "current" state of the inputCLK
   if (currentStateCLK != previousStateCLK){
     if (digitalRead(inputDT) != currentStateCLK) {
       counter ++;

     } else {
       counter --;

     }
     if (counter<0){
        counter=0;
        }
     else if (counter>9){
        counter=9;
         }


      if (counter == 1){
       tone (piezo, notes[0]);
     }
     else if (counter == 2){
       tone (piezo, notes[1]);
     }
     else if (counter == 3){
       tone (piezo, notes[2]);
     }
     else if (counter == 4){
       tone (piezo, notes[3]);
     }
     else if (counter == 5){
       tone (piezo, notes[4]);
     }
     else if (counter == 6){
       tone (piezo, notes[5]);
     }
     else if (counter == 7){
       tone (piezo, notes[6]);
     }
     else if (counter == 8){
       tone (piezo, notes[7]);
     }
     else {
       noTone(8);
     }

     Serial.print("Position: ");
     Serial.println(counter);

     previousStateCLK = currentStateCLK; // Updates the previous state of the inputCLK with the current state
   }
   }

   }




void randomNumber() {
    int i = random(0, 7);
    tone(piezo, notes[i]);
    delay (1000);
}