Hi,
there is a official driver for NAND flashes: https://components.espressif.com/compon ... nand_flash
Depending on your flash model, this might work out of the box.

If that doesn't help, could you please post the model of your Flash, so we can assist you further?

Thank you.

If you want circular buffer, going directly to the flash would probably be easiest. However it might be beneficial to go through FATFS, or other FS simply for host compatibility. What to look out for: Don't use raw flash directly, use idf provided Wear_leveling component, or implement some other wea...

Hi,
could you please post link to your repo/minimal setup, so we can better help you.
Thank you.