working on the sd/mmc card support, we use the SPI interface so started by ripping code and ideas from http://forum.chibios.org/phpbb/viewtopic.php?f=4&t=351
started working on the sdcard stuff
almost there
implement the enable/disable helpers
apparently these constants are no longer used (the MP3 player example used chibios 2.4)
those sttings ought to be correct, but the insertion event handling is lost to me, maybe this was changed since 2.4...