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Subject: Re: [Bluez-devel] New HCI-USB device, no MAC?
From: Marcel Holtmann <marcel@holtmann.org>
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Date: Thu, 09 Mar 2006 14:51:51 +0100

Hi Nils,

> I just acquired a new USB Bluetooth dongle.
> Upon attachment it is correctly recognised as USB HCI but strangely it
> does not carry any valid MAC address:
> 
> Requesting information ...
>         BD Address:  11:11:11:11:11:11
>         Device Name: piwi-1
>         LMP Version: 1.2 (0x2) LMP Subversion: 0x1fe
>         Manufacturer: Integrated System Solution Corp. (57)
>         Features: 0xbf 0xfe 0x8d 0x78 0x08 0x18 0x00 0x00
>                 <3-slot packets> <5-slot packets> <encryption> <slot
> offset>
>                 <timing accuracy> <role switch> <sniff mode> <RSSI>
>                 <channel quality> <SCO link> <HV2 packets> <HV3 packets>
>                 <u-law log> <A-law log> <CVSD> <power control>
>                 <transparent SCO> <broadcast encrypt> <enhanced iscan>
>                 <interlaced iscan> <interlaced pscan> <inquiry with RSSI>
>                 <AFH cap. slave> <AFH cap. master> <AFH class. master>
> 
> Is this a known issue for that chipset?

I have another one from this manufacturer that shows 22:22:22:22:22:22.
Dig up the archive and check for my posting of it.

> In fact I bought two dongles with the same chipset (but different
> casing) and both start with the above default MAC.
> Is there a tool to set a valid MAC?

Yes, but it doesn't support ISSC chips at the moment.

> And if so, to which MAC should I set it?
> Or would probably the Windows driver program an initial MAC if first
> connected to Windows?

I need information from ISSC on this, but you might wanna stick it into
a Windows machine and see if the address changes and you see a different
address from a Linux machine. Maybe it is kinda ROM version of the chip.

Regards

Marcel




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