Re: [Bluez-devel] hcid returning "Device or resource busy"?

[Marcel Holtmann <marcel@holtmann.org>]

Hi Mayank,

> > > > HCI Event: Command Status (0x0f) plen 4
> > > >     Remote Name Request Cancel (0x01|0x001a) status 0x01 ncmd 1
> > > >     Error: Unknown HCI Command
> > > 
> > > Looks like a BT1.1 dongle to me since Remote Name Request Cancel was
> > > introduced after that.
> > > And since the device is not yet finished paging during the 
> > remote name
> > > request, it disallows the Inquiry Command.
> > > 
> > > Solution: Get yourself a dongle > BT1.1 !
> > 
> > actually it was the Create Connection Cancel that was introduced with
> > Bluetooth 1.2. The Remote Name Request Cancel was always 
> > present, but it
> > seems we have a chip that doesn't support it.
> 
> You are right as well as wrong. Both Remote Name Request Cancel and 
> Create Connection Cancel were introduced in BT1.2. Please check (I've
> done that already!).

I don't have the Bluetooth 1.1 specification at hand. I was pretty sure
that the Remote Name Request Cancel was always present since I only
added a dependency against Bluetooth 1.2 for the Create Connection
Cancel support I added to the kernel lately.

> And since this is not an optional command it is impossible to have a
> BT1.2 chip which doesn't support this command.

You wish. I have seen chips where the set of supported HCI commands is
limited. Remember there is no real HCI qualification.

Regards

Marcel



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