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Lpc2000

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Re: What are the main differences between interfacing with SD and MMC devices?

2006-04-12 by derbaier

--- In lpc2000@yahoogroups.com, "darcy_will" <darcyw@...> wrote:

> 
> This is kind of a dual purpose question...  
> a) Can the same driver used for MMC cards be used for SD?
> b) if not, how different is the interface?
> 

SD is a superset of MMC, and it includes the MMC commands as a subset.
So, if you just use the MMC subset with the SPI interface you should
be able to use SD and MMC interchangeably. I have been doing just that
with code based on the Circuit Cellar FAT drivers.

-- Dave

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