# MicroPython Simple Keypad

![MicroPython](https://img.shields.io/badge/MicroPython-Ready-brightgreen.svg)
[![License](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT)

MicroPython library for interfacing with a keypad matrix

![](https://github.com/PerfecXX/MicroPython-SimpleKeypad/blob/main/doc/4x4keypad.png)

## Feature 

- Supports any keypad matrix configuration.
- Easily customizable for different keypad layouts.
- Provides exception handling for error management.

## Example Usage 

Example for 4x4 keypad metrix on MicroPython esp32. 

```python
from machine import Pin
from keypad import Keypad
from time import sleep

# Define GPIO pins for rows
row_pins = [Pin(25),Pin(26),Pin(27),Pin(14)]

# Define GPIO pins for columns
column_pins = [Pin(23),Pin(22),Pin(19),Pin(18)]

# Define keypad layout
keys = [
    ['1', '2', '3', 'A'],
    ['4', '5', '6', 'B'],
    ['7', '8', '9', 'C'],
    ['*', '0', '#', 'D']]

keypad = Keypad(row_pins, column_pins, keys)

while True:
    key_pressed = keypad.read_keypad()
    if key_pressed:
        print("Key pressed:", key_pressed)
    sleep(0.1)  # debounce and delay
```