Is it possible to design a system using STM32F722 to have both USB MSC and SDMMC to read/write date to SD card both by MCU and by external PC interchangeable information on the same file in SD card?

[Jtron.11]

I am looking for some guidance how to implement a system that utilize both SDMMC and USB MSC so I can read/write data inside SD card from MCU and external PC.

Thank you for your helps

[Tesla DeLorean]

You'd have to manage cache-coherency for the PC/Windows side of things otherwise all manner of corruption can occur.

The MSC/SCSI layer can generate sense codes indicating the media is write only, and has been changed, etc.