rt-thread/components/dfs/filesystems/yaffs2

how to use yaffs under rt-thread.

There are three steps.
1. get yaffs tarball from official repo.
the repo of official repo is here.
http://www.aleph1.co.uk/gitweb?p=yaffs2.git;a=summary
then you should find the 2011-6-28's snapshot, download the tarball
http://www.aleph1.co.uk/gitweb?p=yaffs2.git;a=snapshot;h=2df51cdb98e799c4d10b4cc7dd7e8858aa79e7d8;sf=tgz

decompress the yaffs.tar.gz to rt-thread\components\dfs\filesystems\yaffs2\yaffs

2. patch yaffs.diff
open an terminal.
(1) on windows
open cmd command prompt, then use [cd] command to come current path
for example
F:\Project\svn\rt-thread\components\dfs\filesystems\yaffs2>
then type command
patch -p1 < yaffs.diff

you will get some log information as followings
F:\Project\svn\rt-thread\components\dfs\filesystems\yaffs2>patch -p1 < yaffs.diff
patching file `dfs_yaffs2.c'
patching file `yaffs/direct/yaffs_list.h'
patching file `yaffs/direct/yaffs_nandif.c'
patching file `yaffs/direct/ydirectenv.h'
patching file `yaffs/direct/yportenv.h'
patching file `yaffs_nandcfg.c'
patching file `yaffs_osglue.c'

now you can delete yaffs.diff
there is another patch file, as the name shows, it is to fix compile
warning, so it is not necessary. If you want, you can use the
following command.
patch -p1 < fixwarning.diff

(2) on linux
Help yourself. Since you have use linux as your os, I believe in you.

3.add nand driver and compile
In order to use yaffs, you should provide a nand driver which is needed
by yaffs. There is an example file in rt-thread\components\dfs\filesystems\uffs\nand.
you should modify yaffs_nandcfg.c according to your nand driver.
then you can use scons or IDE like MDK or IAR to compile.

enjoy !