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

Mark vd Waal van Dijk M.v.d.Waal_v.Dijk at krohne-altometer.nl
Thu Dec 14 13:53:01 CET 2006

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


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
>>try to get my hands on some other cards, maybe it has to do with the cards
> 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

View this message in context: http://www.nabble.com/FTP-server-sample-not-working-tf2767813.html#a7871906
Sent from the MicroControllers - Ethernut mailing list archive at Nabble.com.

More information about the En-Nut-Discussion mailing list