// Rotary Encoder readings using interrupts 
#define CLK 2
#define DT 3

int counter = 0;
int currentStateCLK;
int lastStateCLK;
String currentDir ="";

void setup() {
    // Set encoder pins as inputs
  pinMode(CLK,INPUT);
  pinMode(DT,INPUT);
  // Setup Serial Monitor
  Serial.begin(9600);
  // Read the initial state of CLK
  lastStateCLK = digitalRead(CLK);
    // Call updateEncoder() when any high/low changed seen
  // on interrupt 0 (pin 2), or interrupt 1 (pin 3)
  attachInterrupt(0, updateEncoder, CHANGE);
  attachInterrupt(1, updateEncoder, CHANGE);
}