Support of 4-bit ECC for NAND Flash

[Ha]

Hello Nordic community,

I am using nRF52840 and try to implement external memory unit for MX35LF2G14AC, which is 2Gb SLC NAND flash. I am wondering nRF52840 can support 4-bit ECC/528B, more precisely whether nRF52840 has enough capability to implement ECC algorithm whether it is Reed-Solomon/BCH, etc. It will be even great if there is already existing library if possible. Please let me know.

Thanks,

Ha

[MartinBL]

Hi,

Unfortunately the nRF52840 doesn't have any ECC hardware and we don't have any examples or documentation showing how to implement it in software. 

[hmolesworth]

Micron has 1, 2 and 4 Gb SPI FLASH with on-board ECC handling; worth a look ..

[Shahrear]

you may use Segger emLIB for those. i am using it.

[ash007]

Shahrear I am also looking for an ECC solution and find out Segger emLib but its quite costly. Is it spending 2K euros or is there another way around?

[ash007]

Can we implement in software somehow? I have to execute some lightweight error correction codes (ideally BCH) to compare and subsequently correct the mismatches between two binary arrays. I am working on the nrf52840 development kit and using contiki-ng as the operating system.