rpi-keypad

a simple matrix keypad library for the raspberry pi

installation

``
npm i rpi-keypad
`

sample usage

typescript usage
`typescript
import Keypad from "rpi-keypad";
`
javascript usage
`javascript
var Keypad = require("rpi-keypad");

var input = new Keypad(
[
["1", "2", "3", "A"],
["4", "5", "6", "B"],
["7", "8", "9", "C"],
["*", "0", "#", "D"],
], // keypad layout
[40, 38, 36, 32], // row GPIO pins
[37, 35, 33, 31] // colum GPIO pins
);

setInterval(() => {
var key = keypad.getKey();
if (key != null){
console.log("key pressed: " + key);
} else {
console.log("no key pressed");
}
}, 100);
``