Help on connection to OPPO phone

[rubenmonteiro]

Hi.
I'm using your nuget to connect to a Bluetooth device, I'm using my phone as a sandbox to test my code.
My basic code is this

    internal class Program
    {
        static bool IsServicesResolved;
        static async Task Main(string[] args)
        {
            Console.WriteLine("Searching Bluetooth devices");
            var adapter = await BlueZManager.GetAdapterAsync("hci0");
            adapter.DeviceFound += adapter_DeviceFoundAsync;
            Console.WriteLine("Searching devices");
            await adapter.StartDiscoveryAsync();
            await Task.Delay(TimeSpan.FromSeconds(10));
            await adapter.StopDiscoveryAsync();
            var devices = await adapter.GetDevicesAsync();
            Console.WriteLine("Choose Device");
            for (int i = 0; i < devices.Count; i++)
            {
                Console.WriteLine($"{(i + 1)} => {(await devices[i].GetNameAsync())}");
            }
            var index = Console.ReadLine();
            var device = devices[int.Parse(index) - 1];
            device.ServicesResolved += device_ServicesResolved;
            await device.ConnectAsync();
            await Task.Delay(TimeSpan.FromSeconds(5));
            var connected = await device.GetConnectedAsync();
            Console.WriteLine($"Device connected: {connected}");
            var paired = await device.GetPairedAsync();
            if (!paired)
            {
                await device.PairAsync();
                await Task.Delay(TimeSpan.FromSeconds(5));
                paired = await device.GetPairedAsync();
            }
            Console.WriteLine($"Device is paired: {paired}");

            while (!IsServicesResolved)
            {
                Console.Clear();
                Console.WriteLine($"{DateTime.Now}");
                await Task.Delay(TimeSpan.FromSeconds(500));
            }
            Console.WriteLine("Services resolved");
            var services = await device.GetServicesAsync();
            var deviceProp = await device.GetPropertiesAsync();
            var deviceUUID = await device.GetUUIDsAsync();
            foreach (var uuid in deviceUUID)
            {
                var service = await device.GetServiceAsync(uuid);
                if (service == null)
                    Console.WriteLine($"No service for UUID: {uuid}");
                else
                    Console.WriteLine($"Service for UUID: {uuid}");
            }
            Console.ReadLine();
        }

        private static Task device_ServicesResolved(Device sender, BlueZEventArgs eventArgs)
        {
            IsServicesResolved = true;
            return Task.CompletedTask;
        }

        private static async Task adapter_DeviceFoundAsync(Adapter sender, DeviceFoundEventArgs eventArgs)
        {
            Console.WriteLine($"Device Found: {(await eventArgs.Device.GetNameAsync())}");
        }

    }

The issue I'm facing is that I don't have any services that I can connect to, this is the console output:

Searching devices
Device Found: OPPO A73 5G
Choose Device
1 => OPPO A73 5G
1
Device connected: True
Device is paired: True
Services resolved
No service for UUID: 00001101-0000-1000-8000-00805f9b34fb
No service for UUID: 00001105-0000-1000-8000-00805f9b34fb
No service for UUID: 0000110a-0000-1000-8000-00805f9b34fb
No service for UUID: 0000110c-0000-1000-8000-00805f9b34fb
No service for UUID: 0000110d-0000-1000-8000-00805f9b34fb
No service for UUID: 0000110e-0000-1000-8000-00805f9b34fb
No service for UUID: 00001112-0000-1000-8000-00805f9b34fb
No service for UUID: 00001115-0000-1000-8000-00805f9b34fb
No service for UUID: 00001116-0000-1000-8000-00805f9b34fb
No service for UUID: 0000111f-0000-1000-8000-00805f9b34fb
No service for UUID: 0000112d-0000-1000-8000-00805f9b34fb
No service for UUID: 0000112f-0000-1000-8000-00805f9b34fb
No service for UUID: 00001132-0000-1000-8000-00805f9b34fb
No service for UUID: 00001200-0000-1000-8000-00805f9b34fb
No service for UUID: 00001800-0000-1000-8000-00805f9b34fb
No service for UUID: 00001801-0000-1000-8000-00805f9b34fb
No service for UUID: 0000aa15-0000-1000-8000-00805f9b34fb
No service for UUID: a49eaa15-cb06-495c-9f4f-bb80a90cdf00

Can anybody give some idea on this, because the same list of UUIDS in the Bluetooth linux console returns the UUIDS names

00001101-0000-1000-8000-00805f9b34fb Serial Port
00001105-0000-1000-8000-00805f9b34fb OBEX Object Push
0000110a-0000-1000-8000-00805f9b34fb Audio Source
0000110c-0000-1000-8000-00805f9b34fb Remote Control Target
0000110d-0000-1000-8000-00805f9b34fb Advanced Audio
0000110e-0000-1000-8000-00805f9b34fb Remote Control
00001112-0000-1000-8000-00805f9b34fb Headset Audio Gateway
00001115-0000-1000-8000-00805f9b34fb PANU
00001116-0000-1000-8000-00805f9b34fb Network Access Point
0000111f-0000-1000-8000-00805f9b34fb Handsfree Audio Gateway
0000112d-0000-1000-8000-00805f9b34fb SIM Access (SAP)
0000112f-0000-1000-8000-00805f9b34fb Phonebook Access (PBAP) - PSE
00001132-0000-1000-8000-00805f9b34fb Message Access Server
00001200-0000-1000-8000-00805f9b34fb PnP Information
00001800-0000-1000-8000-00805f9b34fb Generic Access
00001801-0000-1000-8000-00805f9b34fb Generic Attribute
0000aa15-0000-1000-8000-00805f9b34fb Unknown
a49eaa15-cb06-495c-9f4f-bb80a90cdf00 Proprietary

Thanks

[DamianSuess]

Hi @rubenmonteiro, thank you for the inquiry. Though i'm currently unable to answer your question directly at this time as i'm not near a laptop for a while.

To help assist, I converted your inquiry to a Q&A discussion topic. If this action was incorrect, we can always convert it back 👍

Quick question:

• On your cellphone are you using a custom BLE app to act as the BLE Server that you're connecting to?

[rubenmonteiro]

Hi Damian.
Thanks for the reply.
I don't have any custom BLE app that I'm aware, it's just the normal Bluetooth setting from the phone