Hello,

I have a Teensy 4.0 connected to my Linux box running PopOS.

First I programmed the Teensy to continuously write to the USB port, and I can read this fine using the following code:

var HID = require('node-hid');
var devices = HID.devices();

var device = new HID.HID('/dev/hidraw5');

device.on("data", function(data) {
  console.log(data.toString())
});

But then I try writing to the Teensy using the following code and I can't get it to work:

var HID = require('node-hid');
var devices = HID.devices();

var device = new HID.HID('/dev/hidraw5');

setInterval(() => {
  device.write([0x00, 0x01, 0x01, 0x05, 0xff, 0xff]);
  console.log("Every second");
}, 1000);

The problem doesn't appear to be my code on the Teensy, because I can write to it fine using either the serial monitor in the Arduino application, or another serial monitor. I just can't write to the Teensy using node-hid.

Any suggestions?
Thanks