Subscribing to sender notifications in iOS dotnet maui

[ajay-mundi]

Hello,

I am trying to get Geolocation data from a GNSS receiver that uses BT Classic. I am able to successfully connect to the device but I am not sure how to listen for update notifications from the receiver.

Any help would be greatly appreciated!

Thanks using System.Diagnostics; using ExternalAccessory; using InTheHand.Bluetooth; using InTheHand.Net.Bluetooth; using InTheHand.Net.Sockets;

namespace EOSConnect;

public partial class MainPage : ContentPage { int count = 0;

Stream stream = null;

public MainPage()
{
    InitializeComponent();
}

private async void OnCounterClicked(object sender, EventArgs e)
{

    BluetoothClient client = new BluetoothClient();
    BluetoothDeviceInfo device = null;
    device = client.PairedDevices.FirstOrDefault();

    if (device != null)
    {
        bool paired = BluetoothSecurity.PairRequest(device.DeviceAddress, "0000");
        await Task.Delay(2000);


        client.Connect(device.DeviceAddress, BluetoothService.SerialPort);

        if (client.Connected)
        {

            //i tried this method but the stream has a size of 0.
            stream = client.GetStream();
            var ss = stream.CanRead;
            StreamReader sr = new StreamReader(stream, System.Text.Encoding.ASCII);
            char[] buffer = new char[10000];
            await sr.ReadAsync(buffer, 0, (int)stream.Length);
            sr.Close();
        }
    }
}

}

[peterfoot]

A classic GPS device sends back a constant stream of NMEA data (usually one reading per second). These will be separated with a linebreak character. You can use a loop in a worker thread to keep reading the data using StreamReader.ReadLine for example. Then you'll need to parse the raw data.