detect-rpi/index.js

Detects if node is currently running on a Raspberry Pi.

var fs = require('fs');
var PI_MODEL_NO = [
    // https://www.raspberrypi.com/documentation/computers/processors.html
    'BCM2708',
    'BCM2709',
    'BCM2710',
    'BCM2835', // Raspberry Pi 1 and Zero
    'BCM2836', // Raspberry Pi 2
    'BCM2837', // Raspberry Pi 3 (and later Raspberry Pi 2)
    'BCM2837B0', // Raspberry Pi 3B+ and 3A+
    'BCM2711', // Raspberry Pi 4B
    'BCM2712' // Raspberry Pi 5
];

function isPi(model) {
    return PI_MODEL_NO.indexOf(model) > -1;
}

module.exports = function () {
    var cpuInfo;
    try {
        cpuInfo = fs.readFileSync('/proc/cpuinfo', { encoding: 'utf8' });
    } catch (e) {
        // if this fails, this is probably not a pi
        return false;
    }

    var model = cpuInfo
        .split('\n')
        .map(line => line.replace(/\t/g, ''))
        .filter(line => line.length > 0)
        .map(line => line.split(':'))
        .map(pair => pair.map(entry => entry.trim()))
        .filter(pair => pair[0] === 'Hardware')

    if (!model || model.length == 0) {
        return false;
    }

    var number = model[0][1];
    return isPi(number);
}