This a USB experiment with a USB cable to connect the PC to the development board, the computer can operate as common U disk to operate as an SD card development board

USER\hw_config.c
....\JLinkLog.txt
....\JLinkSettings.ini
....\main.c
....\memory.c
....\sdcard.c
....\sdcard.h
....\STM32-DEMO.uvgui.Administrator
....\STM32-DEMO.uvgui_Administrator.bak
....\STM32-DEMO.uvopt
....\STM32-DEMO.uvproj
....\STM32-DEMO_LED-DEMO.dep
....\STM32-DEMO_UsbMasterStorge-DEMO.dep
....\STM32-DEMO_uvopt.bak
....\STM32-DEMO_uvproj.bak
....\stm32f10x.h
....\stm32f10x_conf.h
....\stm32f10x_it.c
....\usart1.c
....\usart1.h
....\usb_desc.c
....\usb_istr.c
....\usb_prop.c
....\usb_pwr.c
USER

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