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Subject: Re: [Bluez-users] bluetooth 1.2 - how do I know it's working?
From: Marcel Holtmann <marcel@holtmann.org>
To: bluez-users@lists.sourceforge.net
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Date: Wed, 13 Apr 2005 17:15:22 +0200

Hi Jesse,

> I just bought a D-Link DBT 120 rev B3 from ebay and flashed
> it with the latest Apple dfu firmware using btdfu. (Thanks
> for the advice, Marcel!)
> 
> Before the firmware upgrade, it talked to my Logitech Mobile
> Freedom headset fine (Logitech HS02-V07) using btsco, but
> the connection cracked and popped a lot. I run an 802.11b
> network, so I figured the BT 1.1 might be getting interference
> from the 802.11b net, thus causing the sound artifacts.
> 
> After the successful upgrade, it sounds a little better, I
> think, but how do I make sure that the USB adapter AND the
> headset are using BT 1.2's AFH features?
> 
> Here's my adapter:
> 
> hci0:   Type: USB
>         BD Address: 00:0D:88:93:FC:3E ACL MTU: 192:8  SCO MTU: 64:8
>         UP RUNNING PSCAN ISCAN
>         RX bytes:576034 acl:30 sco:11266 events:88 errors:0
>         TX bytes:569989 acl:26 sco:11157 commands:40 errors:0
>         Features: 0xff 0xff 0x8f 0x78 0x18 0x18 0x00 0x80
>         Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
>         Link policy: RSWITCH HOLD SNIFF PARK
>         Link mode: SLAVE ACCEPT
>         Name: 'BlueZ (0)'
>         Class: 0xff0100
>         Service Classes: Positioning, Networking, Rendering, Capturing, Object Transfer, Audio, Telephony, Information
>         Device Class: Computer, Uncategorized
>         HCI Ver: 1.2 (0x2) HCI Rev: 0x632 LMP Ver: 1.2 (0x2) LMP Subver: 0x632
>         Manufacturer: Cambridge Silicon Radio (10)
> 
> And here's my Mobile Freedom Headset:
> 
> # hcitool info 00:0D:44:36:E6:F4
> Requesting information ...
>         BD Address:  00:0D:44:36:E6:F4
>         Device Name: Logitech HS02-V07
>         LMP Version: 1.2 (0x2) LMP Subversion: 0x611
>         Manufacturer: Cambridge Silicon Radio (10)
>         Features: 0xfc 0xfe 0x0f 0x00 0x08 0x08 0x00 0x00
>                 <encryption> <slot offset> <timing accuracy> <role switch>
>                 <hold mode> <sniff mode> <RSSI> <channel quality> <SCO link>
>                 <HV2 packets> <HV3 packets> <u-law log> <A-law log> <CVSD>
>                 <paging scheme> <power control> <transparent SCO>
>                 <AFH cap. slave> <AFH cap. master>
> 
> # hcitool afh 00:0D:44:36:E6:F4
> AFH map: 0xffffffffffffffffff7f
> 
> Does this indicate that both devices are using AFH correctly?

monitor the "hcitool afh" call and if the value changes then AFH is
working.

Regards

Marcel




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