Pull-up rotary encoder

#include <CtrlEnc.h> // Define an onTurnLeft handler.void onTurnLeft() {  Serial.println("Pull-up rotary encoder turn left");} // Define an onTurnRight handler.void onTurnRight() {  Serial.println("Pull-up rotary encoder turn right");} // Create a rotary encoder with the clk signal pin number, dt signal pin number,// onTurnLeft & onTurnRight handler.CtrlEnc encoder(2, 3, onTurnLeft, onTurnRight); void setup() {  Serial.begin(9600);   // If you use external pull-up resistors, uncomment the following line:  // encoder.setPinMode(INPUT, PULL_UP);   // If you use external pull-down resistors, uncomment the following line:  // encoder.setPinMode(INPUT, PULL_DOWN);   // If you have a board that has internal pull-down resistors, and want to   // use those instead, you can uncomment the following line:  // encoder.setPinMode(INPUT_PULLDOWN);   // If you have a board that has internal pull-up resistors, and want to use those instead, you   // don't need to call the setPinMode() method, as the encoder is set to 'INPUT_PULLUP' by default.} void loop() {  // The process method will poll the rotary encoder object and handle all it's functionality.  encoder.process();}