Bluetooth api for surface pro 3 windows 8.1

Question

I have a Bluetooth button from Radius networks. Built-in - “add bluetooth device” finds it every time.

I need an api or a stack that I can use for my application. I am doing this in C #. 32 ft library not compatible

Answer 1

To list the RFCOMM Bluetooth devices connected to the device, follow these steps:

var DEVICE_ID = new Guid("{00000000-0000-0000-0000-000000000000}"); //Enter your device RFCOMM service id (try to find it on manufactorer website var services = await Windows.Devices.Enumeration.DeviceInformation.FindAllAsync( RfcommDeviceService.GetDeviceSelector( RfcommServiceId.FromUuid(DEVICE_ID))); 

To connect to the first available device, follow these steps:

 if (services.Count > 0) { var service = await RfcommDeviceService.FromIdAsync(services[0].Id); //Open a socket to the bluetooth device for communication. Use the socket to communicate using the device API var socket = new StreamSocket(); await socket.ConnectAsync(service.ConnectionHostName, service.ConnectionServiceName, SocketProtectionLevel .BluetoothEncryptionAllowNullAuthentication); //Substitue real BluetoothEncryption } 

To send data to the device and read the data back, follow these steps:

 var BYTE_NUM = 64 as UInt32; //Read this many bytes IInputStream input = socket.InputStream; IOutputStream output = socket.OutputStream; var inputBuffer = new Buffer(); var operation = input.ReadAsync(inputBuffer, BYTE_NUM, InputStreamOptions.none); while (!operation.Completed) Thread.Sleep(200); inputBuffer = operation.GetResults(); var resultReader = DataReader.FromBuffer(inputBuffer); byte[] result = new byte[BYTE_NUM]; resultReader.ReadBytes(result); resultReader.Dispose(); //Do something with the bytes retrieved. If the Bluetooth device has an api, it will likely specify what bytes will be sent from the device //Now time to give some data to the device byte[] outputData = Encoding.ASCII.GetBytes("Hello, Bluetooth Device. Here some data! LALALALALA"); IBuffer outputBuffer = outputData.AsBuffer(); //Neat method, remember to include System.Runtime.InteropServices.WindowsRuntime operation = output.WriteAsync(outputBuffer); while (!operation.Completed) Thread.Sleep(200); await output.FlushAsync(); //Now the data has really been written 

This will work on all RFCOMM (regular) Bluetooth devices, if your device uses Bluetooth Low Energy, please use the appropriate GATT classes.