Hi,
thank you all for your inputs and links. I will take a look into it. Best regards, Michal Lenc ---------- Původní e-mail ---------- Od: Simon Filgis <si...@ingenieurbuero-filgis.de> Komu: dev@nuttx.apache.org Datum: 25. 2. 2023 14:43:33 Předmět: Re: W25Nx NAND flash support "Hi Michael, In addition, if you want to load your elf directly to the memory mapped flash storage, you need some flashloader for your debug tool. I can help with segger's flashloader if that is of interest. (dsk) https://www.segger.com/products/debug-probes/j-link/technology/j-link-dsk/ Simon -- Ingenieurbüro-Filgis USt-IdNr.: DE305343278 -- sent by mobile phone Alan C. Assis <acas...@gmail.com> schrieb am Sa., 25. Feb. 2023, 14:29: > Hi Michal, > > There is some discussion about it here: > https://www.mail-archive.com/dev@nuttx.apache.org/msg04981.html > > and here: > https://lists.apache.org/thread/kh5t6fn24q97d3qxzthksld4l3jtw27c > > In a nutshell: > > 1) If parallel NAND Flash is used your MCU will need first the NAND > Flash controller driver. SPI and QSPI NAND are different story; > 2) NuttX needs the basic NAND Bad-Block search function infrastructure > (look nand_devscan() is not updating the bad-block table) > 3) NuttX needs a File System able to handle NAND Flash > > Currently there is no FS on NuttX able to handle NAND. > So you can port the CHFS from NetBSD or take a look at dhara > (https://github.com/dlbeer/dhara). > > Maybe LittleFS or SmartFS could be extended to handle NAND. > > BR, > > Alan > > On 2/25/23, Michal Lenc <michall...@seznam.cz> wrote: > > Hello, > > > > > > > > I am looking into usage of w25nx NAND flash communicating over QSPI. What > > is > > the current support of NAND flash memories in NuttX? I found out some > > warnings in drivers/mtd/README.txt regarding the lack of a file system > that > > > > could handle NAND memories but I am not sure if they are still actual or > > those problems were solved. There are some header files and source code > > files for NAND memory support but some of them seem to be incomplete > (like > > nand_initialize() function for example > > https://github.com/apache/nuttx/blob/ > > master/include/nuttx/mtd/nand.h#L105). > > > > > > > > > > Would the implementation of w25nx flash require some further involvement > in > > > > file system support or just the implementation of w25nx driver itself > > (similar to already implemented w25q NOR flash)? > > > > > > > > > > Thanks. > > > > Best regards, > > Michal Lenc > > > "
