https://github.com/EngstromJimmy/Blazm.Bluetooth

https://github.com/EngstromJimmy/Blazm.Bluetooth

blazor bluetooth

Last synced: 3 months ago
JSON representation

• Host: GitHub
• URL: https://github.com/EngstromJimmy/Blazm.Bluetooth
• Owner: EngstromJimmy
• Created: 2020-05-11T15:54:31.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2022-12-08T14:58:36.000Z (almost 2 years ago)
• Last Synced: 2024-05-02T02:50:18.770Z (6 months ago)
• Topics: blazor, bluetooth
• Language: C#
• Homepage:
• Size: 858 KB
• Stars: 77
• Watchers: 6
• Forks: 13
• Open Issues: 5
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml

Awesome Lists containing this project

• awesome-blazor - Blazm.Bluetooth -  A Blazor library for connecting to devices using Bluetooth. (Libraries & Extensions / Tools & Utilities)

README

        
# How to use Blazm.Bluetooth

Blazm.Bluetooth makes it easy to connect Blazor to your Bluetooth devices using Web Bluetooth.

Works both Client-side and Server-side.

## Sponsors

Thanks you to much to my sponsors!  

![](https://raw.githubusercontent.com/EngstromJimmy/Blazm.Components/master/Display%20Ads%20Horizontal%20Leaderboard%20728x90%20TOP_RITM0148003.png)

Telerik UI for Blazor – Increase productivity and cut cost in half! Use the Telerik truly native Blazor UI components and high-performing grid to cover any app scenario. [Give it a try for free.](https://www.telerik.com/blazor-ui?utm_source=jimmyengstrom&utm_medium=cpm&utm_campaign=blazor-trial-github-blazmcomp-sponsored-message )

## Getting Started

1. Add Nuget package Blazm.Bluetooth

2. In Program.cs add ```builder.Services.AddBlazmBluetooth();```

3. In the component you want to connect to a device add the Blazm.Bluetooth Namespace

```@using Blazm.Bluetooth```

4. Inject the IBluetoothNavigator (the instance that will communicate with your device)

```@inject IBluetoothNavigator navigator```

Now you are all setup now it is time to connect to a device.

## Connecting to a device

You need to create a query or a filter to filter devices, you could also specify ```AcceptAllDevices``` but that is only recommended while testing.

To take a look at available devices you can use (for Microsoft Edge) edge://bluetooth-internals.

You can query devices using a ServiceId or by name, you also have to specify all the services that you want to access in ```OptionalServices```

To connect to an Andersson (SenSun) scale you need to do the following (check Pages/AnderssonScaleDemo for more info)

Specify the ServiceId and CharacteristicId you want to communicate with.

``` cs

var serviceId = "0000ffb0-0000-1000-8000-00805f9b34fb";

var characteristicId = "0000ffb2-0000-1000-8000-00805f9b34fb";

```

Create a filter

``` cs

var q = new RequestDeviceQuery();

q.Filters.Add(new Filter() { Services = { serviceId } });

```

Request a device

``` cs

var device = await navigator.RequestDeviceAsync(q);

```

This will return a device and it contains an id that you can use to read, write, or set up notifications.

Call the ```SetupNotifyAsync``` to get notifications when the value changes.

``` cs

await device.SetupNotifyAsync(serviceid, characteristics);

device.Notification += Value_Notification;

``` 

and add an event listener that parses the data from the notification.

``` cs

private void Value_Notification(object sender, CharacteristicEventArgs e)

{

    var data = e.Value.ToArray();

    

    // Do something with the data

    StateHasChanged();

}

```

The same thing goes for read and write

``` cs

//Write

await device.WriteValueAsync(serviceid,characteristicsid,value);

//Read

var bytes = await device.ReadValueAsync(serviceid, characteristicId);

```

There is still many scenarios to implement but this should cover the basics.

Please feel free to add ideas /problems/needs you might have or make a PR.