MSP432P401R: SPIFFS NVS External Flash configuration issue.

John Pocreva

Part Number: MSP432P401R

CCS 10.00

Simplelink SDK 3.40.01.02

Hello All,

I am trying to use an external spi flash with SPIFFS driver and I am getting a strange error. When I run SPIFFS_info I get a total and used value that is very large. the value Hex FFFFF246 which is 4,294,963,782 dec it would be nice if I had that many bytes. But the flash chip only has 256K. The used size returns zero. and I get a failure writing the file. I am using SPIFFSInternal example and I am trying to modify it to use NVSSPI25X as the driver.

I also note that if I change the value of region size to be greater than 4096 bytes I get a -10025 error. I am wondering if I am missing a change I need to make somewhere.

Any advice would be greatly appreciated.

Thanks

over 4 years ago

0 John Pocreva over 4 years ago

Intellectual 905 points

Umm, hello TI support? Is there anybody home?

0 JD Crutchfield over 4 years ago in reply to John Pocreva

TI__Mastermind 29105 points

Hello John,

I'm not very familiar with the SPIFFS example, but the example summary states it's using the NVS driver to write internal flash. Did you test the example as is first and see it working as expected?

Now when you are trying to modify the NVS driver to interface to external SPI flash, this is where the issues are coming from correct?

It looks like if you successfully update the NVS driver, then you probably only need to change the memory sizes to match the actual Flash you are working with.

Here is all the documentation I could find on the SPIFFS in simplelink SDK:

Simplelink SDK User's Guide

SPIFFS API reference documentation

Thanks,

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MSP432P401R: SPIFFS NVS External Flash configuration issue.