Re: [Bluez-devel] bluetooth headset

[Brad Midgley <bmidgley@xmission.com>]

daniel,

btsco.c (userspace) has a function detect_channel that tries to figure
out the channel using sdp. i believe it's equivalent to running:

sdptool search --bdaddr 00:0A:D9:74:B4:EA 0x1108

what kind of output do you get when you search your headset?

can anyone confirm that 0x1108 is the right way to find the headset
profile over sdp?

paul ionescu had a similar problem with the jabra bt 110...

brad

Daniel Andor wrote:
> Hi,
> 
> Had success with connecting to my laptop's headset profile, but not before 
> figuring out that it doesn't work with the default channel 7, but needs to be 
> made to use channel 8:
> 
> Does't work:
> $ ./btsco 00:0B:6B:58:92:E9
> Device is 3:0
> Voice setting: 0x0060
> RFCOMM channel 7 connected
> 
> Does work:
> $ ./btsco 00:0B:6B:58:92:E9 8
> Device is 3:0
> Voice setting: 0x0060
> RFCOMM channel 8 connected
> recieved AT+BRSF=22
> recieved AT+CIND=?
> opened hwdep
> connected SCO channel
> Setting sco fd
> Done setting sco fd
> recieved AT+CIND?
> AT+CMER=3,0,0,1=15
> Sending up speaker change 15
> recieved AT+CHLD=?
> recieved AT+CCWA=1
> recieved AT+CLIP=1
> 
> Details:
> $ uname -a
> Linux pooh 2.6.9-2-k7 #1 Sat Jan 8 15:38:24 EST 2005 i686 GNU/Linux
> 
> $ sudo hciconfig -a
> hci0:   Type: USB
>         BD Address: 00:02:72:40:AD:56 ACL MTU: 192:8  SCO MTU: 64:8
>         UP RUNNING PSCAN ISCAN
>         RX bytes:9550635 acl:181 sco:187095 events:359 errors:0
>         TX bytes:9545657 acl:188 sco:187095 commands:98 errors:0
>         Features: 0xff 0xff 0x0f 0x00 0x00 0x00 0x00 0x00
>         Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
>         Link policy: RSWITCH HOLD SNIFF PARK
>         Link mode: ACCEPT MASTER
>         Name: 'pooh'
>         Class: 0x100100
>         Service Classes: Object Transfer
>         Device Class: Computer, Uncategorized
>         HCI Ver: 1.1 (0x1) HCI Rev: 0x20d LMP Ver: 1.1 (0x1) LMP Subver: 0x20d
>         Manufacturer: Cambridge Silicon Radio (10)
> 
> $ sudo hciconfig hci0 revision
> hci0:   Type: USB
>         BD Address: 00:02:72:40:AD:56 ACL MTU: 192:8  SCO MTU: 64:8
>         HCI 16.4
>         Chip version: BlueCore02
>         Max key size: 56 bit
>         SCO mapping:  HCI
> 
> $ sudo hcitool info 00:0B:6B:58:92:E9
> Requesting information ...
>         BD Address:  00:0B:6B:58:92:E9
>         Device Name: HANNAH
>         LMP Version: 1.2 (0x2) LMP Subversion: 0x694a
>         Manufacturer: Broadcom Corporation (15)
>         Features: 0xff 0xff 0x0d 0x38 0x08 0x08 0x00 0x00
>                 <3-slot packets> <5-slot packets> <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> <power control>
>                 <transparent SCO> <enhanced iscan> <interlaced iscan>
>                 <interlaced pscan> <AFH cap. slave> <AFH cap. master>
> 
> 
> 
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