#include <Keypad.h>
#include <Adafruit_ILI9341.h>
#include <Adafruit_GFX.h>
#include <esp8266Wifi.h>


// C++ code
//
const byte  rowsCount = 4;
const byte  columsCount = 3;

char keys[rowsCount][columsCount] = {
  {'1','2','3'},
  {'4','5','6'},
  {'7','8','9'},
  {'*','0','#'}
};

byte columnPins[columsCount] = {27, 13, 22 };
byte   rowPins[rowsCount] = {33, 25, 26, 14};

Keypad keypad = Keypad(makeKeymap(keys),rowPins,columnPins,rowsCount,columsCount);
void setup()
{
  Serial.begin(9600);
}

void loop()
{
	char key = keypad.getKey();
 	if (key) {
      Serial.print(key);
   }
   
}