[Bluez-users] Bluez HID story?

[Bluez-users] Bluez HID story?

[John McCorquodale]

So I'm trying to get my spiffy new Logitech BT keyboard working with my CF
BT card.

I found Peter Klausler's 'bthid' which seems to sortof work with the uinput
driver in 2.4.25.  However, when typing very fast, it repeats substrings of
my input more than once (e.g. 'ls -lsa' -> 'ls -ls-lsa') which is a problem
that typing more slowly eliminates.  I've also had my kernel panic once or
twice when trying this stuff out.

I also found Marcel's page:

  http://www.holtmann.org/linux/bluetooth/hid.html

Which starts off great talking about how "this reimplementation" reuses the HID
parser from USB and is morally superior to Peter's work.  However, the page
then goes on to talk about all sorts of USB dongles, which is irrelevant (the
whole point of a BT keyboard is to throw the dongle in the trash and use my
laptop's builtin BT), and further doesn't seem to talk about any exiting code
at all past the mention of "this reiplementation" in the first paragraph.

My question is:

  What is the best currently working way to handle bluetooth HI devices?  The
  device itself, not the dongle.  How does one configure host-initiated
  disconnection on idle detection (since I'm a Logitech KB, I guess I need to
  do that)?  Am I just totally missing the important message on Marcel's
  HID page?  By the way: what's doing the layout on hortmann.org? -- I really
  respect and admire the minimalism and good design sense of those pages.

If there is such a thing, can you give me a quick breakdown of the steps one
would take to get it working?  For example, for bthid, the steps I use go:

  1. Get HCI working (cardmgr loads serial_cs, hciattach ttyS0 bcsp 2300400)
  2. Compile bthid from http://www.visi.com/~pmk/bthid-0.10.tar.gz
  3. hcitool scan, hit connect button, to deduce BT address of keyboard
  4. bthid -n -v -v <address>
  5. hit connect on KB

If there is no existing HID implementation other than Peter's, please let me
know this so I know it's worth the time to debug the substring repeat problem
and figure out why it panics me.

Thanks,

-mcq


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Re: [Bluez-users] Bluez HID story?

[Marcel Holtmann]

Hi John,

> So I'm trying to get my spiffy new Logitech BT keyboard working with my CF
> BT card.
> 
> I found Peter Klausler's 'bthid' which seems to sortof work with the uinput
> driver in 2.4.25.  However, when typing very fast, it repeats substrings of
> my input more than once (e.g. 'ls -lsa' -> 'ls -ls-lsa') which is a problem
> that typing more slowly eliminates.  I've also had my kernel panic once or
> twice when trying this stuff out.
> 
> I also found Marcel's page:
> 
>   http://www.holtmann.org/linux/bluetooth/hid.html
> 
> Which starts off great talking about how "this reimplementation" reuses the HID
> parser from USB and is morally superior to Peter's work.  However, the page
> then goes on to talk about all sorts of USB dongles, which is irrelevant (the
> whole point of a BT keyboard is to throw the dongle in the trash and use my
> laptop's builtin BT), and further doesn't seem to talk about any exiting code
> at all past the mention of "this reiplementation" in the first paragraph.
> 
> My question is:
> 
>   What is the best currently working way to handle bluetooth HI devices?  The
>   device itself, not the dongle.  How does one configure host-initiated
>   disconnection on idle detection (since I'm a Logitech KB, I guess I need to
>   do that)?  Am I just totally missing the important message on Marcel's
>   HID page?  By the way: what's doing the layout on hortmann.org? -- I really
>   respect and admire the minimalism and good design sense of those pages.
> 
> If there is such a thing, can you give me a quick breakdown of the steps one
> would take to get it working?  For example, for bthid, the steps I use go:
> 
>   1. Get HCI working (cardmgr loads serial_cs, hciattach ttyS0 bcsp 2300400)
>   2. Compile bthid from http://www.visi.com/~pmk/bthid-0.10.tar.gz
>   3. hcitool scan, hit connect button, to deduce BT address of keyboard
>   4. bthid -n -v -v <address>
>   5. hit connect on KB
> 
> If there is no existing HID implementation other than Peter's, please let me
> know this so I know it's worth the time to debug the substring repeat problem
> and figure out why it panics me.

actually there is a new implementation. The code is only present in the
CVS, because it makes use of the new Bluetooth library and this is not
fully ready for mainstream. A installation HOWTO can be found here

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

Regards

Marcel




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