Utilizing FEE on External Flash

Nathan Loika

Hello,

I am implementing a data storage system using external serial NOR Flash (1GB chip). The goal is to store data collected during the operation of a RM46 based system and to be able to export this data later. I currently use the TI Fee driver to read and write to internal flash on the RM46 and was wondering if this driver could be ported to help with wear leveling on the external flash. I would have to write a FlashAPI like interface for my external flash for sure. Is this a feasible thing to do or is there a better way to go about this?

Thanks,

Nathan

over 10 years ago

0 Anthony F. Seely over 10 years ago

TI__Guru 69070 points

Nathan,

You probably reuse the concepts of the FEE driver. We don't have any plans as far as I know to extend this driver to external flash but it is something you could do yourself.

However, given the size of and larger number of sectors in the external 1G NAND compared to the Flash EEPROM emulation bank on chip - there may be more optimal ways to make use of the external NAND. I'd suggest researching this specific point before you put much effort into porting FEE.

Best Regards,
Anthony

0 Nathan Loika over 10 years ago in reply to Anthony F. Seely

Intellectual 370 points

Thanks for the reply. It is along the lines with what I have seen from my research. Do you have any suggestions on where to look for more information about the software/hardware interface for larger flash banks? I'm finding lots out there on smaller scale stuff, but not much on anything over a few MB.

Thanks,
Nathan

0 Anthony F. Seely over 10 years ago in reply to Nathan Loika

TI__Guru 69070 points

I'd probably look at what linux world has w. regards to flash file systems along the lines of processors.wiki.ti.com/.../Filesystem_in_NOR_or_NAND

Although that link is pretty old --- it's what I'd start googling for.

You could also try posting the question on the processor forum - not as a device specific question but just as a 'what are recommended flash file systems for use with an external 1GB NAND device' (assume it's unmanaged?)

0 Nathan Loika over 10 years ago in reply to Anthony F. Seely

Intellectual 370 points

Thanks for the info and suggestions!

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Utilizing FEE on External Flash