-----Message d'origine-----
De : [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] De la part de Andrew Lunn
Envoyé : vendredi 21 septembre 2007 13:20
À : eCos discussion
Objet : Re: [ECOS] [Fwd: AT91SAM7SE DMA with external SDRAM]
> From: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
> Subject: AT91SAM7SE DMA with external SDRAM
> Date: Fri, 21 Sep 2007 10:08:45 +0200
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>
> 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
We just got an answer from ATMEL, this pb has already been reported, they
're looking for a workaround.
JC
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