On Fri, Mar 30, 2001 at 10:17:02AM +0530, Ravi Kumar B S wrote:
> hi,
>
> no. i am not fiinding any problem with the bluetooth driver as i yet to test
> it. but before that i want to understand the control flow. starting from
> usbregistration, open, write etc. so i want a kgdb(kernel debugger) as i am
> not able to see it using normal GDB(GNU debugger).i am working with 2.4.1
> version kernel.
Check out kdb. There is also an article in the current issue of Linux
Journal Embedded systems (that might be the wrong title, sorry) about
source level kernel debugging that might help you out.
> i have another doubt. what i understand is that a tty device is a character
> device and usually terminals are considered as tty devices. so in that case
> why is usb bluetooth device is considered as a tty device.
The USB Bluetooth driver is a tty device as to look just like a serial
Bluetooth device. This enables the driver to work with any Bluetooth
stack that can talk to a serial Bluetooth device. Because of this, the
current driver works with over 5 different Bluetooth stacks.
I currently have a version of the driver that was contributed by a
company that does not use the tty interface, but the char driver
interface. I'm currently working on trying to merge these two versions
together so that the driver will work well with all Linux Bluetooth
stacks.
Hope this helps,
greg k-h
--
greg@(kroah|wirex).com
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