Example to send a can message every 100ms using node.js and socketcan.

socketcan-example.js

/**
 * Example to send a can message every 100ms using node.js and socketcan.
 * 
 * Run `npm i socketcan` once to install the node module.
 * 
 * License: CC-BY-NC-SA 4.0
 * (c) 2021 Peter Müller <peter@crycode.de> (https://crycode.de)
 */

const socketcan = require('socketcan');

const channel = socketcan.createRawChannel('can0');
channel.start();

function sendData () {
  channel.send({
    id: 0x042, // the can id
    ext: false, // true for extendes frames
    rtr: false,
    data: Buffer.from([0x01, 0x02, 0x03]), // the data to send
  });
}

setInterval(sendData, 100);