This is what got me started: https://forums.ghielectronics.com/t/proper-qspi-setup-with-2-2-preview/
Although I am not using the USB connection to the PC.
It does appear to work. I can create, open, and save files. My concern is that it is trying to use the whole 16MB and, over time, will overwrite the deployment area.
I would like to use the FileSystem (FAT) file system vs Tiny File System so I can use it for the SQLite database.
I did notice that there isn’t too much documentation on using the external flash for FAT file system, so maybe I am using it in a way that it is not intended.