[En-Nut-Discussion] FTP server sample not working

[Mark vd Waal van Dijk]

I tried a 512MB Dane-Elec SD card today. With success, this one works fine :)
So it seems there are some card-related issues. 

Mark



Harald Kipp wrote:
> 
> 
> At 06:35 06.12.2006 -0800, you wrote:
> 
>>The MMC card is an 4MB card from JVC, the SD is an 1GB from Panasonic. I
can
>>try to get my hands on some other cards, maybe it has to do with the cards
>>themselves.
> 
> Four MB! This is indeed a rotten ol' card. :-) Slowing
> down the SPI speed may indeed help. But not sure, if
> it's worth the effort. SD Cards are very cheap and
> I'd recommend SanDisk. They are not the fastest, but
> very tolerant.
> 
> For Ethernut 3, the SPI clock is generated in the PLL
> chip. See NplMmcIfcInit() in dev/nplmmc.c. NPL_MMC_CLOCK
> is 12.5 MHz by default:
> #define NPL_MMC_CLOCK   12500000
> 
> For the SAM7X the rate is set in At91SpiMmcIfcInit() in
> arch/arm/dev/spimmc_at91.c. Check the SAM7X datasheet
> for how to set SCBR in SPI_CSR1.
> 
> Harald
> 
> _______________________________________________
> http://lists.egnite.de/mailman/listinfo/en-nut-discussion
> 
> 

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