btle.js v0.2.1

btle.js

(Pronounced "BeetleJuice").

Node.js Bluetooth LE module for Linux. Uses a C/C++ addon to make direct calls to the Linux Bluetooth stack. Currently supported functionality includes:

• Read Attribute
• Write Command
• Write Request
• Find Information
• Listen for Notifications

Still to be implemented:

• Read Multiple
• Read by Group Type
• Read by Type
• Read Blob
• Listen for Indications

Usage:

var btle = require('btle.js');

// Connect
btle.connect('BC:6A:29:C3:52:A9', function(err, conn) {
  process.on('SIGINT', function() {
    conn.close();
  });

  // Register an error callback
  conn.on('error', function(err) {
    console.error("Connection error: %s", err);
    conn.close();
  });

  // Register a close callback
  conn.on('close', function() {
    console.log("Got close");
  });

  // Listen for notifications for handle 0x25
  conn.addNotificationListener(0x25, function(err, buffer) {
    if (err) {
      console.log("Notification error: " + err);
    } else {
      console.log("Temperature, " + buffer.readUInt16LE(0) + ", " + buffer.readUInt16LE(2));
    }
  });

  // Write a 1 to handle 0x29 to turn on the thermometer
  buffer = new Buffer([1]);
  conn.writeCommand(0x29, buffer);

  // Write 0100 to handle 0x26 to turn on continuous readings
  buffer = new Buffer([1, 0]);
  conn.writeCommand(0x26, buffer);
});