Thank you "dieghuot". I appreciate your timely reply.
Cheers. Grahame
--- In "dieghuot" <> wrote:
>
>
> TS gives a sample code:
> ftp://ftp.embeddedarm.com/ts-arm-sbc/ts-7800-linux/samples/spi.c
>
> However, looking more closely, you'll realize that the code streams
> data in and out of the GPIO port. The Marvell controller does not
> have a dedicated SPI bus. What that means is that you don't know the
> transfer speed and the code uses the CPU pretty heavily.
>
> In short, the provided code is probably OK if you use SPI very little
> and your slave device has a high throughput (the ts temperature chip
> that TS uses can take 4Mbps).
>
> I am actually considering another board for these and other reasons.
> The ts-72xx actually have a dedicated spi bus. I am experimenting now
> with a Glomotion that provides a 1Mbps rs-485 port, SPI bus and a
> stock 2.6.25 kernel.
>
> Diego
>
>
> --- In "wildpossumboy" <wildpossumboy@> wrote:
> >
> > Hi All.
> >
> > I am a newbie here. We have 2 x TS-7800 which we are using in
> > developing a embedded system for auditing and controlling client
> > systems. The units we just received a couple of days ago, but
> > fortunately we have been Linux users/developers since Kernel 1.2.8.
> > Now that makes me feel old :)
> >
> > Question. Is SPI fully operational on TS7800/2.6.21-ts?
> > As we have never used SPI before, which pins use SPI? and are
there any
> > gotcha! that others may have found with such an implementation?
> > Any sample programs around to build upon?
> >
> > Thanks.
> > Grahame
> >
>
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