From: magene-5892unH0nlnYtjvyW6yDsg@public.gmane.org
To: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: SPI or CSPI transfers using DMA
Date: Thu, 30 Oct 2008 22:46:29 -0700 [thread overview]
Message-ID: <10811398.477881225431989704.JavaMail.nabble@isper.nabble.com> (raw)
I've been developing an application on an Eurotech (formerly Applied Data Systems) Bitsy Xb PXA270 board that reads data from and ADC at about 50 kSamples/sec. It works fine when I poll the SPI port for data but I get some drop outs in the data, probably when the OS is off doing something else. I'd like to use DMA put the DMA engine on the PXA270 has a pretty steep learning curve. Does anyone have a code example that could help jumpstart me? I may be upgrading to a i.MX31 based board and similar examples with that device's CSPI and DMA would also be helpful.
Thanks - Gene
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next reply other threads:[~2008-10-31 5:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-31 5:46 magene-5892unH0nlnYtjvyW6yDsg [this message]
[not found] ` <10811398.477881225431989704.JavaMail.nabble-eSX/vLDKhQvUl7QJpGZvuQ@public.gmane.org>
2008-10-31 12:28 ` SPI or CSPI transfers using DMA Ned Forrester
2008-11-20 21:39 ` David Brownell
[not found] ` <200811201339.28627.david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
2008-11-20 23:07 ` Ned Forrester
[not found] ` <4925ED9B.305-/d+BM93fTQY@public.gmane.org>
2008-11-20 23:46 ` Massion, Gene
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