Hi,
one of my bluetooth headsets has the talent to send back "AT+BVRA=1"
just about one second after it has connected (pressing the button sends
"AT+CKPD=200"). Because of this the SCO connection is canceled
immediately.
Why is this behavior programmed into btsco?
Best regards,
Sebastian
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Hi Lars,
thanks for your answer!
> Looks like the wrong channel is selected.
Can't imagine why this can be a problem with the RFCOMM channel. But
let's give it a try!
# sdptool search --bdaddr 00:0B:2E:02:03:A2 0x1108
Class 0x1108
Searching for 0x1108 on 00:0B:2E:02:03:A2 ...
Service Name: Headset
Service RecHandle: 0x20000
Service Class ID List:
"Headset" (0x1108)
"Generic Audio" (0x1203)
Protocol Descriptor List:
"L2CAP" (0x0100)
"RFCOMM" (0x0003)
Channel: 6
Language Base Attr List:
code_ISO639: 0x656e
encoding: 0x6a
base_offset: 0x100
If I do not specify a channel to btsco it uses 6.
I tried to add channels to the commandline. It connects with channel 1
or 2. But if I tried to establish the SCO channel pressing the button
the headset continuosly peeps, no SCO connection!
Best regards,
Sebastian
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Looks like the wrong channel is selected.
Try enforcing another channel number by adding it after the bt address, i.e.
btsco <btaddr> 2
you can find out the channel numbers your headset provides using the
usual hcitools. I forgot what tool, though... %)
hope this helps,
~ Lars
Sebastian Roth wrote:
| Hi,
|
| one of my bluetooth headsets has the talent to send back "AT+BVRA=1"
| just about one second after it has connected (pressing the button sends
| "AT+CKPD=200"). Because of this the SCO connection is canceled
| immediately.
| Why is this behavior programmed into btsco?
|
| Best regards,
| Sebastian
|
|
|
| -------------------------------------------------------
| SF email is sponsored by - The IT Product Guide
| Read honest & candid reviews on hundreds of IT Products from real users.
| Discover which products truly live up to the hype. Start reading now.
| http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click
| _______________________________________________
| Bluez-devel mailing list
| [email protected]
| https://lists.sourceforge.net/lists/listinfo/bluez-devel
|
- --
Lars Grunewaldt
* software development
* multimedia design
skills: C/C++/Java/PHP/(X)HTML/Flash/audio/video
web: http://www.dark-reality.de
mail: [email protected]
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