Re: [Bluez-users] Is Bluetooth 2.0 supported/implimented by bluez ?

[Marcel Holtmann <marcel@holtmann.org>]

Hi Jerone,

> I have been trying to transfer files from my cellphone to my computer
> over bluetooth quickly. Both are bluetooth 2.0 and I noticed under
> linux that they do not transfer at much slower speed then under
> windows. After some investigation I have to assume that they are
> transfering using bluetooth 1.2 speeds & not bluetooth 2.0 speeds. My
> cell phone is a Nokia N73 & usb dongle is belkin bluetooth 2.0 class1
> usb dongle. I have tried this with Ubuntu Edgy & Fedora Core 6 using
> the gnome file sharing applet on the computer to get the files.
> 
> After reading the source code I see the the VHCI is has a decleration
> "define VERSION 1.2". Looking at the kernel code & bluez tools it does
> not look like bluetooth 2.0 is supported. But I can't find a
> definative answer anywhere.  Does anyone have any idea ?
> 
> Here is info on my bluetooth dongle:
> hci0:   Type: USB
>         BD Address: 00:0A:3A:6F:82:85 ACL MTU: 1017:8 SCO MTU: 64:8
>         Features: 0xff 0xff 0x8d 0xfe 0x9b 0xfd 0x00 0x80
>                 <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> <broadcast encrypt> <EDR ACL 2 Mbps>
>                 <EDR ACL 3 Mbps> <enhanced iscan> <interlaced iscan>
>                 <interlaced pscan> <inquiry with RSSI> <extended SCO>
>                 <EV4 packets> <EV5 packets> <AFH cap. slave>
>                 <AFH class. slave> <3-slot EDR ACL> <5-slot EDR ACL>
>                 <pause encryption> <AFH cap. master> <AFH class. master>
>                 <EDR eSCO 2 Mbps> <EDR eSCO 3 Mbps> <3-slot EDR eSCO>
>                 <extended features>
>         HCI Ver: 2.0 (0x3) HCI Rev: 0x2000 LMP Ver: 2.0 (0x3) LMP Subver: 0x415c
>         Manufacturer: Broadcom Corporation (15)
>         Firmware 0.65 / 92
> 
> I also went out and got a Bluetake 700sx and still do not get 2.0
> speeds..what is going on. It looks like Bluez does not have Bluetooth
> 2.0 implimented.

both sides has to support EDR packets to achieve Bluetooth 2.0 speed and
BlueZ fully supports EDR and will use it whenever possible.

Regards

Marcel



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