BleReader.Net

A simple wrapper made to read manufacturer data from Bluetooth LE devices using .NET.

It currently supports Linux using DBus and BlueZ (using DotNet-BlueZ). In addition to providing raw manufacturer data, it provides parsed data for specific devices (supports only RuuviTag currently).

Features

• Read data of a RuuviTag
• Get list of all available devices and their data (address, name, manufacturer ID and manufacturer data)

Requirements

• Linux system with BlueZ 5.50 or later installed

Installation

Available as NuGet package:

dotnet add package BleReader.Net

Usage

Get RuuviTag data:

var adapterName = "hci0";
var scanDurationSeconds = 5;
var ruuviMacAddress = "12:34:56:78:90:AB";

IBleReader reader = new BleReader(new DotNetBlueZService());
await reader.ScanAsync(adapterName, scanDurationSeconds);
var ruuviTag = await reader.GetManufacturerDataAsync<RuuviTag>(ruuviMacAddress);
if (ruuviTag != null)
{
    var dataAsJson = JsonSerializer.Serialize(ruuviTag, new JsonSerializerOptions() { WriteIndented = true });
    Console.WriteLine($"Data: {dataAsJson}");
}
else
{
    Console.WriteLine("No RuuviTag found");
}

Output:

Data: {
  "DataFormat": 5,
  "Humidity": 27.495,
  "Temperature": 18.1,
  "AirPressure": 1006.94,
  "AccelerationX": -0.004,
  "AccelerationY": -0.012,
  "AccelerationZ": 1.032,
  "BatteryVoltage": 2.881,
  "TxPower": 4,
  "MovementCounter": 184,
  "MeasurementSequenceNumber": 12774,
  "MacAddress": "12-34-56-78-90-AB"
}

Get information of all found devices:

var adapterName = "hci0";
var scanDurationSeconds = 5;

IBleReader reader = new BleReader(new DotNetBlueZService());
await reader.ScanAsync(adapterName, scanDurationSeconds);
var deviceInfoList = await reader.GetAllDevicesAsync();

var firstDevice = deviceInfoList.FirstOrDefault();
if (firstDevice != null)
{
    var bytesAsString = BitConverter.ToString(firstDevice.ManufacturerData?.Data);
    Console.WriteLine($"Bluetooth device with address {firstDevice.Address} found");
    Console.WriteLine($"Manufacturer ID = {firstDevice.ManufacturerData?.Id}");
    Console.WriteLine($"Manufacturer data = {bytesAsString}");
}
else
{
    Console.WriteLine("No devices found");
}

Output:

Bluetooth device with address 12:34:56:78:90:AB found
Manufacturer ID = 1177
Manufacturer data = 05-0E-24-2A-F6-C6-06-FF-FC-FF-F4-04-08-A0-36-B8-31-E6-12-34-56-78-90-AB

Contribute

You can contribute by submitting bugs, feature requests or pull requests (like implementing support for other device types).