thedscpl/raspi-serial-number

Small library to get a Raspberry's Serial number without dependencies

Raspberry Pi Serial Number

Warning: Only works on Raspberry Pi boards! Will raise an exception if not running in a Raspberry Pi

Summary

Raspberry Pis come with a serial number. This package provides a way to get your Raspberry Pi's serial number as a string.

Features

• Has one synchronous and two asynchronous functions
• Fast
• Light weight - Weights 1290 B (uncompressed) or 718 B (gzip-compressed)
• Has no dependencies
• Contains Typescript type definitions

Documentation

Async - Promises

function getSerialNumber(): Promise<string>;

Almost the same as the previous one but returns a promise which will resolve into the serial number or reject with an exception.

Async - Callback

function getSerialNumber(callback: (error: any, data?: string) => void): void;

Receives a callback function. If there is an error, the first parameter of the callback will be it. If not, the serial number will be passed to the second parameter.

Sync

function getSerialNumberSync(): string;

Returns Raspberry Pi's serial number string or throws an exception if there is an error.

Examples

(Typescript definitions already included)

On ES5:

var rsn = require('raspi-serial-number');
var getSerialNumber = rsn.getSerialNumber;
var getSerialNumberSync = rsn.getSerialNumberSync;

On ES6:

import {getSerialNumber, getSerialNumberSync} from 'raspi-serial-number';

or

const {getSerialNumber, getSerialNumberSync} = require('raspi-serial-number');

Async - Promises

getSerialNumber()
    .then(d=>console.log("Promise result: ",d))
    .catch(e=>console.log("Promise error: ",e));

Async - Callback

getSerialNumber((error,data) => {
    if(error)
        console.error("Callback error: ",error);
    else
        console.log("Callback result: ",data)
});

Sync

try {
    console.log("Sync result: ",getSerialNumberSync());
} catch (e) {
    console.error("Sync error: ",e);
}

Future work

• Add options to allow specifying whether or not the leftmost zeros should be trimmed or not (current behaviour is trimming the leftmost zeros of the serial number)
• Maybe add some other options. I'm open to suggestions!

Feel free to open an issue on Github if you find a bug or have a suggestion!