Intermittant bluetooth keyboard
Daniel Benoy
daniel at benoy.name
Tue Sep 9 16:23:20 CEST 2008
I completely drained the battery in my keyboard and now it's working every time.
I wish that there was some way to change this LMP timeout though. Try as I might I couldn't find it.
On Monday 08 September 2008 13:23:15 Daniel Benoy wrote:
> I set up my bluetooth keyboard on my openmoko phone using the 'new' (In other words, not hidd, but still dbus) input interface, and it only works like 10% of the time. That means when I turn it on it should connect and start working. Unfortunately, it only works about 25% of the time, and I have to switch it off and on frequenly in order to get it to finally connect. I get this output from hcidump -V when it doesn't work:
>
> > HCI Event: Connect Request (0x04) plen 10
> bdaddr 00:0A:DF:00:24:59 class 0x002540 type ACL
> < HCI Command: Accept Connection Request (0x01|0x0009) plen 7
> bdaddr 00:0A:DF:00:24:59 role 0x00
> Role: Master
> > HCI Event: Command Status (0x0f) plen 4
> Accept Connection Request (0x01|0x0009) status 0x00 ncmd 1
> > HCI Event: Connect Complete (0x03) plen 11
> status 0x22 handle 42 bdaddr 00:0A:DF:00:24:59 type ACL encrypt 0x00
> Error: LMP Response Timeout
>
> The difference in time between 'Accept Connection Request' and 'LMP Response Timeout' is about 3 seconds. I was under the impression that LMP negociation was supposed to time out after 30 seconds?
>
> Is there something I'm doing wrong? Am I not interprating this correctly?
>
> If it does work I get something like this:
>
> > HCI Event: Connect Request (0x04) plen 10
> bdaddr 00:0A:DF:00:24:59 class 0x002540 type ACL
> < HCI Command: Accept Connection Request (0x01|0x0009) plen 7
> bdaddr 00:0A:DF:00:24:59 role 0x00
> Role: Master
> > HCI Event: Command Status (0x0f) plen 4
> Accept Connection Request (0x01|0x0009) status 0x00 ncmd 1
> > HCI Event: Link Key Request (0x17) plen 6
> bdaddr 00:0A:DF:00:24:59
>
> .
> .
> .
>
> (And then link key request reply and so on it does its negociation and there you have it)
--
Daniel Benoy
http://daniel.benoy.name
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