Inconsistent data received (Bluetooth classic, RFComm, Serialport)

Hi, I am trying to connect to a medica device using Visual Studio + MAUI + InTheHand.Net.Bluetooth.

I successfully pair the device, then connect using the BluetoothService.SerialPort service, but whatever I receive is:

CALL c4:62:ea:98:ce:08 1103 RFCOMM

where c4:62:ea:98:ce:08 is the address of my device. If I try to connect using BluetoothService.DialupNetworking (1103) the connection do not succeed. What I do is:

stream = client.GetStream();
StreamWriter sw = new StreamWriter(stream, System.Text.Encoding.ASCII); (this will be needed later)
StreamReader sr = new StreamReader(stream, System.Text.Encoding.ASCII);
char[] buffer = new char[10000];
await sr.ReadAsync(buffer, 0, (int)stream.Length);

Is something I am doing wrong?

Thanks, Michele

[ajay-mundi]

Hello Enrique and Michele,

Enrique I also tried using your approach (was a lot nicer than mine lol), but still can’t seem to read anything from the stream. Not really sure what I am doing with this bluetooth stuff to be honest. Having a MAUI cross platform sample in this repo would be really helpful.

[mdima]

Thank you Enrique, I tried to use the same pattern you used here: https://github.com/inthehand/32feet/issues/252 to read from the device, but the result doesn’t change at all.

About your issue, I am experiencing the same problem. The “.Connected” property gets false only after a read timeout, even if I turn off the device after I connect it.

Regards, Michele