Control of a complex example of SD card, you can refer to the application to your phone.

SOFT-SD
.......\FileMgr.c
.......\fmt_main.c
.......\INC
.......\...\sdcmd.h
.......\...\sdconfig.h
.......\...\sdcrc.h
.......\...\sddriver.h
.......\...\sdhal.h
.......\msdc.c
.......\sd.c
.......\sd_def.h
.......\SRC
.......\...\sdcmd.c
.......\...\sdhal.c

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