#include <LiquidCrystal.h> 
#include <Keypad.h>
const int rs = 13, en = 12, d4 = 11, d5 = 10, d6 = 9, d7 = 8; 
LiquidCrystal lcd(rs, en, d4, d5, d6, d7); 
int key;


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

uint8_t colPins[COLS] = { 3, 2, 1}; // Pins connected to C1, C2, C3, C4
uint8_t rowPins[ROWS] = { 7, 6, 5, 4 }; // Pins connected to R1, R2, R3, R4

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




void setup() {
  // put your setup code here, to run once:
  lcd.begin(16, 2); 
  lcd.setCursor(0, 0); 
  lcd.print("Test Keypad");

}

void loop() {
  // put your main code here, to run repeatedly:
  char key = keypad.getKey();

  if (key != NO_KEY) {
    lcd.setCursor(0, 1); 
        lcd.print("   ");
        lcd.setCursor(0, 1);
        lcd.print(key); 
  }


}