How to use node-hid - 10 common examples

enum Buttons {
  A = 4,
  B = 5,
  X = 6,
  Y = 7,
  LeftStickY = 14,
  LeftStickX = 13,
  RightStickY = 16,
  RightStickX = 15,
  R2 = 11,
  L2 = 10,
}

const MAX_D_PAD = 127;
const devs = devices();
const deviceInfo = devs.find((d) => d.vendorId === 273 && d.productId === 5152);

if ( !deviceInfo ) {
  // tslint:disable-next-line:no-console
    console.error('Could not find device in device list');
    process.exit(1);
}

const device = new HID( deviceInfo.path );
const calculate = ({ xRaw, yRaw }: { xRaw: number, yRaw: number }) => {
  const x = xRaw / MAX_D_PAD;
  const y = yRaw / MAX_D_PAD;
  const module = Math.sqrt(x * x + y * y);
  let angle = (Math.atan(y / x) * (180 / Math.PI)) * - 1 + 90;
  if (x < 0) {
    angle += 180;

return Promise.resolve().then(() => {
      if (transportInstance) {
        log("hid-verbose", "reusing opened transport instance");
        return transportInstance;
      }

      const device = getDevices()[0];
      if (!device) throw new CantOpenDevice("no device found");
      log("hid-verbose", "new HID transport");
      transportInstance = new TransportNodeHidSingleton(
        new HID.HID(device.path)
      );
      const unlisten = listenDevices(
        () => {},
        () => {
          // assume any ledger disconnection concerns current transport
          if (transportInstance) {
            transportInstance.emit("disconnect");
          }
        }
      );
      const onDisconnect = () => {
        if (!transportInstance) return;
        log("hid-verbose", "transport instance was disconnected");
        transportInstance.off("disconnect", onDisconnect);
        transportInstance = null;
        unlisten();

module.exports = function RBKeyboard() {
    var devices = HID.devices();
    var validDevs = _.filter(devices,
        function(d) { return d.vendorId == 7085 && d.productId == 13104; });
    if (!validDevs.length)
        throw new Error('No usable devices found.');

    var device = new HID.HID(validDevs[0].path);
    var noteData = [];
    for (var i = 0; i < 25; i++) noteData[i] = false;
    var dpadData = {};
    var dirs = { Left: 6, Right: 2, Up: 0, Down: 4 };
    _.each(dirs, function(v, k) { dpadData[k] = false });
	var buttonData = {};
    var buttons = { 1: 1, A: 2, B: 4, 2: 8 };
    _.each(buttons, function(v, k) { buttonData[k] = false });
    var touchData = 0;
    var touchButtonData = false;

    function processData(data) {
        // Uncomment these lines to print the raw data, useful for development
        //_.each(data, function(d) { util.print(d + ' '); });
        //console.log();

#!/usr/bin/env node
var HID = require('node-hid');
fs = require('fs');

var devices = HID.devices();
device = new HID.HID(4292,33742); // same ID for both boards I got

// Board has 16 levels, the OS sees 21, so I remap the values and keep the 5 extra at max brightness. 
// Mappings might be off depending on the driver. Check values on /sys/class/backlight/*/actual_brightness.
// Was 0-100 by 5 intervals in my case. With the edp kernel patch it was 1-4439 with 222 increments.
var mapping = [['0', '0'], ['5', '16'],['10', '32'], ['15', '48'], ['20', '64'], ['25', '80'], ['30', '96'], ['35', '112'], ['40', '128'], ['45', '144'], ['50', '160'], ['55', '176'], ['60', '192'], ['65', '208'], ['70', '224'], ['75', '240'], ['80', '240'], ['85', '240'], ['90', '240'], ['95', '240'], ['100', '240']]

var myMap = new Map(mapping);

// file path might change depending on the driver. 
fs.readFile('/sys/class/backlight/acpi_video0/actual_brightness', 'utf8', function (err,data) {
  if (err) {
    return console.log(err);
  }
  data = data.replace("\n", ''); // clear the newline
  data = myMap.get(data); // get corresponding value

});

  // initialize runtime reference to main window
  //runtime.windowId = mainWindow.id;

  //mainWindow.loadUrl('file://' + __dirname + '/dist/index.html#/todtests');
  mainWindow.loadUrl('file://' + __dirname + '/dist/index.html');
  mainWindow.focus();

  mainWindow.openDevTools();  

  mainWindow.on('closed', function () {
    mainWindow = null;
  });

  var devices = HID.devices();
  //console.log("devices: ", devices);
  console.log("blink1 serials:", Blink1.devices() ); // returns array of serial numbers 
  //var blink1 = new Blink1();
  //blink1.fadeToRGB(400 , 255,0,255 ); // r, g, b: 0 - 255
  //blink1.close();


/*
  // Dock Menu (Mac)
  if (process.platform === 'darwin') {
    var dockMenu = Menu.buildFromTemplate([
      { label: 'New Window', click: function() { console.log('New Window'); } },
      { label: 'New Window with Settings', submenu: [
        { label: 'Basic' },
        { label: 'Pro'},
      ]},

constructor()
  {
    let USB_VID = 0x0416;
    let USB_PID = 0x5020;

    let HID = require('node-hid');

    // Generated by mapRelays()
    this.relayBitmap = [128, 256, 64, 512, 32, 1024, 16, 2048, 8, 4096, 4, 8192, 2, 16384, 1, 32768];

    console.log('Detected devices:', HID.devices(USB_VID, USB_PID));
    this.hid = new HID.HID(USB_VID, USB_PID);
  }

getDevices(options, callback) {
		var output = [];
		this.options = options;
		this.devices = HID.devices();
		for ( var I = 0; I < this.devices.length; I++ ) {
			if (options.filters[0].productId === this.devices[I].productId && options.filters[0].vendorId === this.devices[I].vendorId && (mooltipass.app.os == "linux" || options.filters[0].usagePage === this.devices[I].usagePage)) {
				/* see https://github.com/signal11/hidapi/pull/6 for linux */
				//console.log(this.devices[I])
				this.devices[I].deviceId = I;
				output.push(this.devices[I]);
			}
		}
		callback ( output );
	},
	getUserSelectedDevices(options, callback) {

document.getElementById('selBtn').addEventListener('click', async e => {
  if (devices && devices.length > 0) {
    if (device) device.close()
    clearTimeout(timeOutSet)
    const selectObject = JSON.parse(sel.value)
    const deviceInfoBlock = deviceList[selectObject.index]
    device = new HID.HID(selectObject.path)
    device.on('data', data => getDataFunction(data))
    // getAllSettings().then(() => initSettings())

    // 加载HTML
    const page2HTML = new Promise(resolve => {
      fs.readFile(
        path.join(
          __dirname,
          '/devices/',
          deviceInfoBlock.description,
          '/page2.html'
        ),
        (err, data) => {
          if (err) {
            throw err
          }

button.addEventListener('click', function() {
      connection = new HID.HID( atob(this.path) );
      console.log( connection.getDeviceInfo() );
      connection.setNonBlocking(0);
      connection.readTimeout(500);
      connection.on('error', function(error) {
        console.log('got error from device', error );
      } );
    });
    output.appendChild( button );

XboxController.prototype.loadController = function () {

  HID.devices().forEach((function (d) {
    var product = (typeof d === 'object' && d.product) || '';
    if (product.toLowerCase().indexOf(this.name.toLowerCase()) !== -1) {
      this.hid = new HID.HID(d.path);
      console.log(chalk.green('notice: '), 'Xbox controller connected.');
      this.emit('connected');
      location = this.hid;
    }
  }).bind(this));

  if (this.hid === false && !this._controllerLoadingInterval) {
    this._controllerLoadingInterval = setInterval(function () {
      this.loadController();
    }.bind(this), 2000);
  }

  try {