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Sonsivri > Electronics > AVR, 8051 Family and ARM Area (Moderator: bbarney) > Interfacing 8051 with MMC / SD using SPI protocol
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bugmike25
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« on: November 03, 2007, 11:55:00 23:55 »
Hi, can anyone help me in this project. I need to interface an 8051 with MMC / SD using SPI protocol.  Anything could help. Maybe some datasheets on the SD card and the protocol required to transfer data. Or some code if someone manged to implement this.

Thanks
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th_sak
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« Reply #1 on: November 04, 2007, 08:46:06 08:46 »
You can find sample code in this topic http://www.sonsivri.com/forum/index.php?topic=4226.0 , but it is for AVR. With some modifications it could wotk just fine for any 8051 derivative.
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bugmike25
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« Reply #2 on: November 04, 2007, 06:09:11 18:09 »
Ok thanks. Thats good. I also found another good site that might help others develop this besides using an AVR.  This explains the protocols used step by step.

Code:
http://elm-chan.org/docs/mmc/mmc_e.html
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bbarney
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Uhm? where did pickit put my mute button
« Reply #3 on: November 04, 2007, 11:35:06 23:35 »
here is the SanDisk product manual(a hard to find item), it will tell you everything you want to know
 http://rapidshare.com/files/67490920/ProductManualSDCardv2.2final.pdf.html
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yasir9909
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« Reply #4 on: November 08, 2007, 07:58:47 07:58 »
i have interfaced mmc card with AVR8535 microcontroller
i have posted some code in 'general electronics' topic

what problem are you facing in it
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regards
m.yasir
kukumar
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« Reply #5 on: November 08, 2007, 04:20:59 16:20 »
c51 example :

MMC Data Logger Example AN189  software : AN189SW
http://www.silabs.com/tgwWebApp/public/web_content/products/Microcontrollers/en/mcu_applications_appnotes.htm
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