Introduction - If you have any usage issues, please Google them yourself
1.sdconfig.h: The document for the SD card reader module configuration header files, the user hardware according to actual conditions can be modified .2. SD directory: SD card reader module all the documents, the general need not be amended .3. Recommendations sdconfig. h files do not put in the SD directory, because the SD files in the directory are not normally required to be amended and the changes are usually sdconfig.h.