Interactive Fitness Peripherals

This abstracts the Pulse Audio and Bluez DBus APIs into an easy to use module.

Leveraging these APIs, this code watches for bluetooth peripheral changes and audio interface changes and using an event-driven architecture gives you the ability to make adjustments to these.

Install

It depends on the bluez and @interactivefitness/paclient

sudo apt-get install -y curl pkg-config libdbus-1-dev libdbus-glib-1-dev
yarn add @interactivefitness/peripherals @interactivefitness/paclient bluez

Usage

import { Headsets } from "./Headsets";
import Express from "express";

const app = Express();
const hs = new Headsets();
const port = 4141;

app.get("/", (req, res) => res.send("Hello World!"));

app.get("/headsets", (req, res) => res.send(hs.devices));

// init headsets
hs.init().then(() => {
  app.listen({ port: port }, () =>
    console.log(`Example app listening on port ${port}!`)
  );
});
/*
process.on("SIGINT", function() {
  hs.onDestroy(function() {
    console.error("connection closed due to app termination");
    return process.exit(0);
  });
});
*/

References

• Gnome Desktop: D-Bus

Bluez 5.50

https://launchpad.net/~bluetooth/+archive/ubuntu/bluez

The below would normally work, but it is not build for xenial.

sudo add-apt-repository ppa:bluetooth/bluez
sudo apt-get update
sudo apt-get install -y bluez
#
sudo apt-get install -y libglib2.0-dev libdbus-1-dev

So we have to do it as follows:

• Download libreadline7 (Bionic)

sudo apt install ./libreadline7_7.0-3_amd64.deb
cat > /etc/apt/sources.list.d/bluetooth-ubuntu-bluez-bionic.list
deb http://ppa.launchpad.net/bluetooth/bluez/ubuntu bionic main
# deb-src http://ppa.launchpad.net/bluetooth/bluez/ubuntu bionic main
sudo apt-get update
sudo apt-get install -y bluez

MacOS

See https://github.com/zbentley/dbus-osx-examples

brew install dbus
brew services start dbus
launchctl getenv DBUS_LAUNCHD_SESSION_BUS_SOCKET
export DISPLAY=':0'
export DBUS_SESSION_BUS_ADDRESS = 'unix:path=/run/dbus/system_bus_socket'

Manual Pulse Audio Configuration

bluetoothctl
pulseaudio --start
pactl load-module module-bluetooth-discover
pactl list short sinks
pacmd list-sinks | grep -e 'name:' -e 'index:'
pactl set-card-profile 3 a2dp_sink
pactl set-default-sink "bluez_sink.04_AA_00_0F_5C_94"