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Re: Beagleboard xM - SPI


Vasilis Mar 2, 2012 2:48 PM
Posted in group: BeagleBoard
I see. So TPI11 - TPI14 refers to SPI4? That was something useful
indeed! Isn't it possible to run this spitest through SPI4? Basically,
I am not aware of the spitest source code, so I feel a bit blind!

On 3 Μαρ, 00:19, Jacek Radzikowski <jacek.radzikow...@gmail.com>
wrote:
> Buffers for SPI4 have fixed directions. Directions of buffers for SPI3
> is controlled by pins on the BB's expansion connector, so it can be
> used as either master or slave. If you followed Brian's tutorial, most
> likely you ended up using SPI3. Take a look at the schematic of
> Trainer and configure directions of SPI lines going through U1 and U2.
>
> j.
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> On Fri, Mar 2, 2012 at 17:10, Vasilis <vasilis.vasi...@gmail.com> wrote:
> > I didn't know that. I have no preference on which SPI to use. Do you
> > think that if I use SPI4 there will be no such problem? How do you
> > change the buffer direction on Trainer? Thank you for your response!
>
> > On 3 Ìáñ, 00:04, Jacek Radzikowski <jacek.radzikow...@gmail.com>
> > wrote:
> >> Which SPI did you use? For SPI3 you may have to set direction of the
> >> buffers on the TrainerBoard.
>
> >> j.
>
> >> On Fri, Mar 2, 2012 at 16:46, Vasilis <vasilis.vasi...@gmail.com> wrote:
> >> > Hello! I finally managed to setup SPI drivers for Beagleboard xM
> >> > running Ubuntu and ran the spitest program following these
> >> > instructions:
>
> >> >http://www.brianhensley.net/2012/02/spi-working-on-beagleboard-xm-rev...
> >> > (special thanks to Robert Berger who help me out a lot with some
> >> > fundamental stuff)
>
> >> > I have the Trainer xM board now and I want to see if SPI is actually
> >> > working. So I hooked up MOSI and MISO on the Trainer and ran the
> >> > spitest program. I was surprised to see that nothing happenned. I want
> >> > to state that SPI on Beagleboard itself worked fine.
>
> >> > --
> >> > To join:http://beagleboard.org/discuss
> >> > To unsubscribe from this group, send email to:
> >> > beagleboard...@googlegroups.com
> >> > Frequently asked questions:http://beagleboard.org/faq
>
> >> --
> >> Given a choice between two theories, take the one which is funnier
>
> > --
> > To join:http://beagleboard.org/discuss
> > To unsubscribe from this group, send email to:
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> > Frequently asked questions:http://beagleboard.org/faq
>
> --
> Given a choice between two theories, take the one which is funnier