Suitable FileSystem for external SLC NAND Flash memory

[masterLee]

Dear all,

I am working on an nRF52840 project that communicates with an external NAND Flash memory and I am looking for a suitable file system for my external flash memory.

The memory I use is a 2Gb (256Mbytes) SPI SLC NAND Flash by Micron (MT29F2G01). I have successfully managed to write, read and erase data in flash without issues.

Now I need something more...elegant and organized so that I can use my Flash memory with files and I am searching for a suitable file system for this cause.

  After a lot of searching I found the following possible solutions but, since I am not an expert on the file system subject  I would need a liitle (lot of) your help and experience  .

• FLogFS                      (link)
• usbd_msc example   (link)
• emFile                        (link)

FLogFS seems to be the most suitable since the memory that is used is an MT29F1 series SPI SLC NAND.

usbd_msc example uses QSPI to communicate with the onboard external memory but the memory is NOR and not NAND. So I don't know if that makes sense mentioning it

emFile supports the memory chip I use but it is difficult for me to understand how to use emFile with nRF52840 and where to start from

[Jared]

Hi,

I'm not sure but I assume that the USBD example will support the NAND flash if the QSPI instruction set is similar to the NOR flash that we use in the example. I don't have any experience with the other file systems so I can't really give any recommendations on them. Maybe someone in the forum can?

[CheMax]

Hello,

The documentation provides a set of commands that the QSPI module uses (table 80, nRF52840_PS_v1.1). But if I understand correctly, the entire set of commands is not needed. Maybe there is a minimum that needs to be ensured for compatibility?

NAND cards are very good in terms of chip size / capacity. And the presence of a hardware mechanism for leveling wear gives a significant plus.