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From: Lars Steinke <sf@lsweb.de>
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Subject: [Bluez-users] Re: btsco - headset profile activated but no sco packets transmitted ???
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Date: Mon, 4 Apr 2005 21:50:07 +0200

Oops, forgot that info here:

root@sigma:~# hcitool info 00:07:A4:95:41:76
Requesting information ...
        BD Address:  00:07:A4:95:41:76
        Device Name: Jabra BT110
        LMP Version: 1.2 (0x2) LMP Subversion: 0x613
        Manufacturer: Cambridge Silicon Radio (10)
        Features: 0xfc 0xff 0x0b 0x00 0x00 0x00 0x00 0x00
                <encryption> <slot offset> <timing accuracy> <role
switch>
                <hold mode> <sniff mode> <park state> <RSSI> <channel
quality>
                <SCO link> <HV2 packets> <HV3 packets> <u-law log>
<A-law log>
                <CVSD> <paging scheme> <transparent SCO>

On Mon, Apr 04, 2005 at 09:45:42PM +0200, Lars Steinke wrote:
> Hi there,
> 
> while running btsco I can successfully change my mixersettings via 
> the headset, so I assume the connection has been established just fine:
> 
> root@sigma:~/src/btsco# ./btsco -v 00:07:A4:95:41:76 2
> btsco v0.4
> Device is 1:0
> Voice setting: 0x0060
> RFCOMM channel 2 connected
> recieved AT+BRSF=24
> recieved AT+VGS=03
> Sending up speaker change 3
> recieved AT+VGS=07
> Sending up speaker change 7
> recieved AT+VGS=11
> Sending up speaker change 11
> recieved AT+VGS=15
> Sending up speaker change 15
> speaker volume: 15 mic volume: 1
> driver is in use
> connected SCO channel
> Done setting sco fd
> 
> But I can neither hear sound nor record anything via the Jabra BT110
> headset using BlueZ 20050328 with kernel 2.6.11:
> 
> aplay -D plughw:Headset test.wav
> Playing Sparc Audio 'test.wav' : Mu-Law, Rate 8000 Hz, Mono
> 
> I just hear a raise in static when playback commences (even though mixer
> levels are maxed in alsamixer!)...
> 
> snd-bt-sco revision 1.6 $
> snd-bt-sco: snd-bt-scod thread starting
> snd-bt-sco: playback_open
> snd-bt-sco: prepare ok bps: 16000 size: 8000 count: 2000
> snd-bt-sco: playback_trigger 1
> snd-bt-sco: setting playback to bspcm
> 
> root@sigma:~# hcitool con
> Connections:
>         < SCO 00:07:A4:95:41:76 handle 44 state 1 lm SLAVE
>         < ACL 00:07:A4:95:41:76 handle 41 state 1 lm MASTER
> root@sigma:~# hciconfig hci0
> hci0:   Type: USB
>         BD Address: 00:02:72:80:A5:D3 ACL MTU: 192:8 SCO MTU: 64:8
>         UP RUNNING PSCAN ISCAN
>         RX bytes:9966 acl:207 sco:0 events:535 errors:0
>         TX bytes:6279 acl:191 sco:0 commands:195 errors:0
> 
> root@sigma:~# hciconfig hci0 revision
> hci0:   Type: USB
>         BD Address: 00:02:72:80:A5:D3 ACL MTU: 192:8 SCO MTU: 64:8
>         HCI 16.14
>         Chip version: BlueCore02-External
>         Max key size: 56 bit
>         SCO mapping:  HCI
> 
> Audio works fine with that headset and dongle using the Widcomm stack
> 1.4 under Windoze ;(...
> 
> Regards,
> Lars


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