Re: [ECOS] procedure to creat the file in ROM/Flash from Application

[Sergei Gavrikov <sergei dot gavrikov at gmail dot com>]

On Fri, 25 Jun 2010, Gopi nath wrote:
> Hi,

Hi Gopi,

> I am using AT91SAM9261 based Evaluation board. i am failed to create a file
> in RAM from my application.

How did you manage this?

> Can any one know the procedure to create a file in ROM/RAM/FLASH from the
> eCos application.

First, you have to add eCos package 'CYGPKG_IO_FILEIO' to get generic
file I/O support. CLI way is

  ecosconfig add fileio

Then you can add some sort of file system for your build, e.g.

  ecosconfig add ramfs ;# RAM filesystem
  ecosconfig add romfs ;# ROM filesystem

If you have flash i/o driver for you target, you can try JFFS2
file system (JFFS2 FS needs more dependencies and more resources)

  ecosconfig add flash
  ecosconfig add linuxcompat
  ecosconfig add crc

and then add 'CYGPKG_FS_JFFS2' package itself

  ecosconfig add jffs2

At the least (if you have enough of resources) you can try ROM/RAM file
systems. To build and try the eCos tests for added eCos FS would be good
idea.

HTH

Sergei

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