Cannot oper/register serial port for Bluetooth

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I'm developing, for XDAII and in eVC4/Win32, an application that opens a serial port for incoming Bluetooth. The Bluetooth Manager sets COM4 as active port number, but my call:

CreateFile(TEXT("COM4:"),GENERIC_READ | GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,NULL);

fails with error message "The specified network resource or device is no longer available".

When I then try to call:

RegisterDevice(TEXT("COM"),4,TEXT("ASIC5_BTUR.Dll" ),0))

also this call fails.

What am I doing wrong ? When I look in the Register [HKEY_LOCAL_MACHINE\Drivers\Active] I find no COM4 active so there is no obvious reason why this call should not work. Have the BTHTools1100 patch installed !

Hello, I am experiencing similiar problems. Have you resolved yours ? If yes, could you show me how you open your ports etc.?

read this :

http://forum.xda-developers.com/view...263&highlight=

Cannot oper/register serial port for Bluetooth

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I am not sure how your link to COM1 prolems regaqrding signals sould help me. My problems are with opening Bluetooth SPP ports, those that show up as the Inbound and Outbound COM ports.Though I would think that both are active, üsing CreateFile() I can open only the Incoming one (COM4) while I receive an INVALID_HANDLE_VALUE for the other one (COM5).

I just saw some info on com ports being inactive as well as a test program so I thought I'd mention it. Didn't mean to provide a solution, sorry

I tried to get the Bluetooth working and also had trouble. I think the inbound and outbound comm ports is to do with if you are using your SPP device as a client or server. It is not as a lot of people think that TX and RX data are on different Comm ports.

I cound not get Bluetooth working at all using my original XDAII rom of 1.60. I downloaded Pocket Bluetooth Tools http://www.bluetooth.jazztel.es/ and then it worked easy on Comm7.

I recently upgraded my XDAII Rom to 1.72 and I tried the Bluetooth support again. This time the XDAII even said I am connecting to a serial SPP device and automatically allocated the Comm port. But I must say my program could still not transfer data correctly using it. It all got stuck in some initilisation sequence. Now that may of been my software so I don't want to blame the XDAII.

All I know is I installed Pocket Bluetooth tools again onto my 1.72 XDAII and all worked fine again on Comm7.

A friend of mine has a new XDAIIs and the inbuilt bluetooth support on that worked 100% first time, no need for the Pocket Bluetooth Tools on that. So I think the problem is with the XDAII and it's built in SPP support.

Had the same problem, resolved it:
Strange but true, but on XDA2 etc, in order to receive COM Bluetooth, you have to open the outgoing port as shown in the Systems Bluetooth settings (You have to tick it there, too, of course), not the incoming.
Then, as it is blocking, you have to create a thread that listens on the port.
You cannot use RegisterDevice for a port number (in your case COM4)that is already used and open.
Phil

OOPS.... and you have to call OpenFile(), not CreateFile() !!!!!!!!!!!