#include <LiquidCrystal_I2C.h>
int a = A0;
int b = A1;
int SW = 2;

int xposition = 0;
int yposition = 0;
int SW_state = 0;
int mapX = 0;
int mapY = 0;
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  lcd.init();
  lcd.backlight();
  pinMode(a, INPUT);
  pinMode(b, INPUT);
  pinMode(SW, INPUT_PULLUP);
}

void loop() {
  xposition = analogRead(a);
  yposition = analogRead(b);
  SW_state = digitalRead(SW);
  mapX = map(xposition, 0, 1023, -512, 512);
  mapY = map(yposition, 0, 1023, -512, 512);
  lcd.setCursor(0,0);
  lcd.print("X: ");
  lcd.print(mapX);
  lcd.print(" | Y:");
  lcd.print(mapY);
  lcd.setCursor(0,1);
  lcd.print(" | Button: ");
  lcd.print(SW_state);
}