[ECOS] Re: spi driver on at91

[Savin Zlobec <savin at elatec dot si>]

davarn wrote:

> Hello,
> I'm really interested to see your code, perhaps it wiil be a good starting
> point, or perhaps just need a simple port to at91m42800.
> What i want to do is "/dev/spi" type of driver wich can handle all type of AT91
> board.
> After make a dataFlash and ADC driver on it.
>
> Regards
> David
>
> Selon Mike Jastrebtsoff <jam2000@pisem.net>:
>
> > Hello,
> >
> > I've ported SPI driver form arm-linux to ecos(AT91M55800A) not so long ago.
> > I used it with Dataflash memory.
> >
> > It has some issues:
> > 1. The speed rate doesn't rise beyond 320 Kbit.
> >    I've applied to the Atmel's support but didn't get a satisfactory answer.
> > 2. Sometimes the spi device doesn't answer the command.
> >
> > Probably these are peculiarities of AT91 SPI or my bugs.
> > I could send it to you.
> >
> > By the way there is Atmel's  software SPI driver.
> >
> > -------
> > Regards,
> >   Mike
> >
> > dff> I am currently starting the devellopement of an spi driver on at91.
> > dff> Does anobody have done that already or is currently doing?
> > dff> If someone do this driver let me know to not devellop this twice.
>  

Hi,

I've also started writing an spi driver some time ago,  did an io_spi 
device driver and
its low level part for the at91. I managed to do some tests with its 
local loopback feature,
the next thing in plan is to write an dataFlash driver...

I can share my code and maybe eCos needs an spi device driver 
infrastructure.
Anybody interested in merging our work ?

savin

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