代码经过调试，完成对SD卡的读写，里面有操作说明-After debugging the code, complete the SD card reader, there are instructions

SD卡的相关资料关于SD卡的读于写的操作，及其原理结构-Relevant information on the SD card SD card read in the write operation, and the principle structure

单片机的sd卡spi模式操作编程，spi通讯协议-sd card spi mode operation programming

文件管理芯片376用于单片机读写U盘和SD卡操作，主要介绍了如何与376固件程序通讯通讯，实现文件操作。-File management control chip 376 can be used for microcontroller U disk SD card file operation, mainly to complete how to communicate with 376 firmware.