#include <Keypad.h>

#define VRXL_PIN  A0 // Arduino pin connected to VRX pin
#define VRYL_PIN  A1 // Arduino pin connected to VRY pin
#define VRXR_PIN  A2 // Arduino pin connected to VRX pin
#define VRYR_PIN  A3 // Arduino pin connected to VRY pin

int xLValue = 0; // To store value of the XL axis
int yLValue = 0; // To store value of the YL axis
int xRValue = 0; // To store value of the XR axis
int yRValue = 0; // To store value of the YR axis

const uint8_t ROWS = 4;
const uint8_t COLS = 4;
char keys[ROWS][COLS] = {
  { '1', '2', '3', 'A' },
  { '4', '5', '6', 'B' },
  { '7', '8', '9', 'C' },
  { '*', '0', '#', 'D' }
};

uint8_t colPins[COLS] = { 5, 4, 3, 2 }; // Pins connected to C1, C2, C3, C4
uint8_t rowPins[ROWS] = { 9, 8, 7, 6 }; // Pins connected to R1, R2, R3, R4

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

void setup() {
  Serial.begin(12800);
}

void loop() {
  char key = keypad.getKey();

  if (key != NO_KEY) {
    Serial.println(key);
  }
  
  // read analog X and Y analog values
  xLValue = analogRead(VRXL_PIN);
  yLValue = analogRead(VRYL_PIN);
  xRValue = analogRead(VRXR_PIN);
  yRValue = analogRead(VRYR_PIN);

  // print data to Serial Monitor on Arduino IDE
  Serial.print("Lx = ");
  Serial.print(xLValue);
  Serial.print(", Ly = ");
  Serial.print(yLValue);
  Serial.print(", Rx = ");
  Serial.print(xRValue);
  Serial.print(", Ry = ");
  Serial.println(yRValue);
  delay(200);
}