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Re: [Fwd: AT91SAM7SE DMA with external SDRAM]
- From: Andrew Lunn <andrew at lunn dot ch>
- To: eCos discussion <ecos-discuss at ecos dot sourceware dot org>
- Date: Fri, 21 Sep 2007 14:19:55 +0200
- Subject: Re: [ECOS] [Fwd: AT91SAM7SE DMA with external SDRAM]
- References: <46F3A1A2.6050606@jifvik.org>
> From: jc.caquet@kerlink.fr
> To: ecos-discuss-owner@ecos.sourceware.org
> Subject: AT91SAM7SE DMA with external SDRAM
> Date: Fri, 21 Sep 2007 10:08:45 +0200
> X-Spam-Status: No, score=2.9 required=5.0 tests=AWL,BAYES_60,
> MSGID_FROM_MTA_ID,NO_REAL_NAME autolearn=no version=3.0.4
>
> Dear all,
> we are facing a pb when sending data over serial link on AT91SAM7SE-EK
> board. We use external SDRAM connected on EBI, this SDRAM is OK as we made
> some intensive read/write tests over the whole memory.
This might not be conclusive. The DMA engine could be doing a
different type of memory access as to normal reads/writes.
> Does anybody know if there are some restrictions/bugs when using DMA with
> external memory connected on EBI ?
You should probably be asking Atmel....
Andrew
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