Re: [Bluez-devel] Bluez article on OReillyNet

Guylhem Aznar
2006-10-03T14:41:43Z

Hello,

On 10/3/06, Peter Wippich <pewi@gw-instruments.de> wrote:
> Depending on your system it is most likely that the HW Uart extension is
> not realy supported by the serial driver. I currently only know for sure
> for PXA type system. You need a special HWUART driver to take advantage of
> the HWUART.

There are 4 ARM systems I can try that with

- A Zaurus 6000, which is a PXA 255

- A Zaurus C860, which is also a PXA 255.

- An Acer N30, but it's a s3c2410, which is quite different.

- A Simpad - however it is a SA 1100, which has no HWUART. Moreover,
its bluetooth module needs some reflashing (which I can't do). It is
on ttySA1 - cf http://www.guylhem.net/r-hardware/simpad/bluetooth/ for
the hardware part, http://opensimpad.org/index.php/Simpad.c for the
software part.

> For a PXA system we may help you out if you insist.

Yes please. I would make a great base for the article.

> Further you may get problems with the RS232 driver chips usualy
> used. If you're able to connect the serial bluetooth module directly to
> the ARM UART lines (Rx / Tx / RTS /CTS) (3 Volt interface without RS232
> driver on both sides) this would be much better.

On the Zaurus 6000, I didn't add the module myself, but I think it's
on 3.3 V directly. It is also on the UART that can be rerouted to
HWUART (FTUART ?)

On the C860, it is directly soldered to the UART lines - yet to ones
of the standard serial port - ttyS0, which I think is STUART (will
check tonight) and which can not be rerouted to HWUART IIRC.

The demo could use either a 2.4 or 2.6 kernel. I usually run a 2.4 on
the 6000 and a 2.6 on the 860 but that's only for tests.

On the N30, I really don't know the s3c2410 - bluetooth work fine with
a 2.6 kernel.

Tell me if you need more information.