#include "Adafruit_Keypad.h"
#include <Adafruit_NeoPixel.h>

#define NUM_LEDS 4
#define DATA_PIN 18

Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, DATA_PIN, NEO_GRB + NEO_KHZ800);

// Variables for the rainbow color cycling
uint8_t hue = 0;



const byte ROWS = 4; // rows
const byte COLS = 4; // columns
//define the symbols on the buttons of the keypads
char keys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
byte rowPins[ROWS] = {39, 40, 41, 42}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {7, 6, 5, 4}; //connect to the column pinouts of the keypad

//initialize an instance of class NewKeypad
Adafruit_Keypad customKeypad = Adafruit_Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS);

void setup() {
  Serial.begin(9600);
  customKeypad.begin();
   strip.begin();
  strip.setBrightness(100);  // Adjust brightness from 0 to 255
  strip.show();  // Initialize all pixels to 'off

}

void loop() {
  // put your main code here, to run repeatedly:
  customKeypad.tick();

  while(customKeypad.available()){
    keypadEvent e = customKeypad.read();
    Serial.print((char)e.bit.KEY);
    if(e.bit.EVENT == KEY_JUST_PRESSED) Serial.println(" pressed");
    else if(e.bit.EVENT == KEY_JUST_RELEASED) Serial.println(" released");
  }

  delay(10);
}