Thread (1 message) 1 message, 1 author, 2004-02-09

Re: [Bluez-devel] Pairing fails with RFCOMM

From: Marcel Holtmann <marcel@holtmann.org>
Date: 2004-02-09 15:56:33

Hi Nils,
OK, maybe like this:
----->
xx. RFCOMM connection using minicom or other tool fails, why?
Problem: In case you have created the RFCOMM link using the "rfcomm
bind" function this can be caused by application timeouts. This is not a
problem of BlueZ or the RFCOMM implementation but rather a problem with
the different nature of a RFCOMM virtual tty and a physical serial tty
device which is normally used by those applications. Some applications
implement a timeout protection function while opening the port. If
opening the port takes longer than a certain amount of time then the
application fails. A serial tty will usually only take several
microseconds to open while the RFCOMM virtual tty can take several
seconds. Additionally opening requires to create a connection to the
remote Bluetooth device, closing the port closes the connection again.
Application which open and close the port frequently may thus also fail!
Solution: Try to create the connection before starting you application.
This can be done by the "rfcomm connect" function. The Bluetooth
connection will then remain until the rfcomm utility is stopped.
<-----

A bit lengthy maybe ;)
thank you. I stripped a little bit and put it only ;)
How does BT-HID mouse work?
The best is you follow this HOWTO

	http://www.bueche.ch/comp/mx900/mx900.html

And don't use the bthid from Peter Klausler until you patch it up.
I have a BT mouse here but the bthid daemon does not connect to it nor
can I connect another service like rfcomm to it...
RFCOMM will never work, because HID is only based on L2CAP.
The accompanied keyboard works like a charm!
If the keyboard works, the mouse should work also.

Regards

Marcel




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