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SPI output

Gumstix-users Ned Forrester 1 participant 1 message Nov 14, 2008 12 messages not in the archive SPI

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Quoted 7 lines · Pranav Sanghadia

Hi Ned,

Thanks, I was stuck with Gumstix boot issue. But now the Gumstix is working again.

I am taking a look at spidev documentation, looks like spidev is the way to go.

One other note. For spidev to work with pxa2xx_spi in DMA mode, you will have to wait for a patch to pxa2xx_spi that I am working on. There is a problem with DMA when using the same buffer for tx and rx, as spidev does. It should still work as-is in PIO mode.

Quoted 2 lines

I am using buildroot latest version, do you know how to compile just one kernel module say spidev without compiling whole kernel code?

Not really. Once you have compiled the whole kernel, if you then change one module, only that module (and maybe a few other minor things) will get re-compiled.

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Ned Forrester                                       nforrester-/[email protected]
Oceanographic Systems Lab                                  508-289-2226
Applied Ocean Physics and Engineering Dept.
Woods Hole Oceanographic Institution          Woods Hole, MA 02543, USA
http://www.whoi.edu/sbl/liteSite.do?litesiteid=7212
http://www.whoi.edu/hpb/Site.do?id=1532
http://www.whoi.edu/page.do?pid=10079


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