Re: X50v and IrDA

On 9/16/05, Richard Bateman <taxilian_at_zzt.net> wrote:
> who is "we"? just wondering who else is working with you on it, so I
> know what information you have access to. =]

"We" is me and a colleague who is more experienced in programming
linux kernel drivers. He has already altered the ircomm kernel driver
so we won't have to do a "ifconfig ircomm0 up" in userspace. It is
working with two laptops, but like I said, we'll have to get the irda
on the x50v working first. Would be much easier if we had framebuffer
output ;-)

> In order to make the IR work, you will (at minimum) need to initialize
> the IR port (which I *think* uses the STUART on the chip) and set up the
> GPIOs correctly.
>
> all gpio info I've compiled can be found at
> http://www.bfamily.us/~richard/tmp/arm/gpio_map.xml
> it's an xml file... view source for more detailed, but less friendly, view.
>
> you need to set the GPIO 46 to AFR 2, and 47 to AFR 1, at the very least.
>
> I'll try to probe the gpios again to see if there are any other gpios
> that seem to be used for IR.

Thanks for the info! We'll surely look into it (but I'm afraid I won't
have much spare time this weekend).

> If I had a windows program that would allow me to use a serial terminal
> on my laptop's IR port, I might be able to figure something out...
> particularly if someone had a small ARM program that would output data
> to a given TTY port so I could test it.

I'll search for such a program. If it doesn't exist, it won't be hard
to make myself, as I'm programming for the pocketpc in my research
projects (networked virtual environments).

> >- Do you or anyone else have experience with irda on the x50v? Can we
> >find some specs for it in the documents on your site (tmp dir)?
> >
> >
> I don't, but I *think* that the IRDA uses the STUART. play with wgpio
> while enabling and disabling the IR port, that'll probably give you some
> insight. someone besides me needs to learn how to use that effectively
> anyway =]

I love learning, so I definately give it a try!

> >- We still weren't able to boot a kernel and get output on the
> >framebuffer. You said it was working with the vsfb driver, but we
> >can't get it to work. If you could provide us a kernel and initrd (and
> >default.txt and haret if they aren't the fisherss ones) that is
> >verified to work with console output on the x50v, we would be very
> >glad. If you can give me the source for that working kernel (or the
> >.config if it's built with the kernel26 of your site), that would be
> >even better!
> >
> >
> I'll see what I can come up with saturday (tomorrow, I guess).

Thanks man! Really appreciated!

Greetz,
JeDi
Received on Fri Sep 16 2005 - 13:07:12 EDT