Pending method of BluetoothListener & WIDCOMM

Topics: Bluetooth - Widcomm/Broadcom
Dec 27, 2012 at 6:23 PM


I have problems with pending method of BluetoothListener class when running on a Widcomm Stack. I'm quite new programming bluetooth communications, but I have developped a software that communicates properly with a custom device on Microsoft Stack radios.

I've read 32feet.NET v3.5 documentation, and tested Broadcom libraries supplied (win32-x86 and win32-x86 SDK5). Radio is properly detected and Test32FeetWidcommWin32.exe finishes all tests with success.

Data of the radio of my computer is:

Broadcom 2046 Bluetooth 2.1. USB dongle / WIDCOMM Bluetooth Software

My problem is that bluetoothlistener.pending() method returns always false. When the device sends data to my computer, bluetoothlistener.pending() returns false but I can see the Bluetooth tray icon change its color (usually white on blue, but green on blue when the device sends data.

I paste my code, that works fine with Microsoft stack:

Private m_lsnr as BluetoothListener

Private m_conn as BluetoothClient

Dim connectionpending as Boolean

Dim m_serviceclass as Guid


m_lsnr=new BluetoothListener(m_serviceclass)





Loop While Not connectionPending

With WIDCOMM, sending data to the computer does not activate Pending() to true

Please, any help will be appreciated. Thanks in advance.

Dec 29, 2012 at 9:55 PM

Presumably if you call AcceptBluetoothClient then it just blocks forever?

Widcomm runs a COM port by default. It will be grabbing the incoming connection to the SerialPort service. If you use a different Service Class Id then your client app will be able to connect to your app, or disable the Widcomm Serial Port somehow...


(I've added a para explaining this to the end of