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/**

\page PeripheralExamples Peripheral Hardware Examples

\section SDCard Controlling SD Cards

The 'Secure Digital' or 'SD Card' mass storage standard, while fundamentally a proprietary standard,
and certainly nowhere near as open as say CompactFlash, has nonetheless become common in DIY and
open-source hardware, providing flash memory storage (as of 2010) in the small numbers of gigabytes
for perhaps a few dollars per gigabyte.  As of 0.9.17, the SFB core software has had support for
performing raw disk operations -- no file system, just reading and writing blocks -- on SD cards.

 - \subpage sdcard1.cpp "Detect an SD card and report its size"

 - \subpage sdcard2.cpp "Benchmark SD card reading and writing"

 - \subpage sdcard3.cpp "Buffered I/O to SD card via packets"

*/
