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Re: Serial support for arm board
- From: "Dave B. Sharp" <daveb_sharp at yahoo dot ca>
- To: Gary Thomas <gary at mlbassoc dot com>
- Cc: eCos Discussion <ecos-discuss at ecos dot sourceware dot org>
- Date: Thu, 27 Oct 2005 15:22:44 -0400 (EDT)
- Subject: Re: [ECOS] Serial support for arm board
That would be great, however, I am assuming Redboot is
a proper subset of Ecos and that I would have to
install Ecos on the board, no? If I screw up the boot
loader install then I am going to have even bigger
problems.
Or can I just link in the appropriate libs and run
from Redboot?
Dave
--- Gary Thomas <gary@mlbassoc.com> wrote:
> On Thu, 2005-10-27 at 14:57 -0400, Dave B. Sharp
> wrote:
> > The serial support is simply for output. Since
> there
> > is not gdb debugging support (I am assuming) I am
> > resorting to printf() development and debugging.
> If
> > there is a better way then I am all ears. Other
> than
> > that, I just want to be able to see something work
> > before proceeding.
> > The "wedge" is intended to be a program that is
> > started by Redboot, does its thing, then in turn
> will
> > start up the Linux kernel, such as with a layer in
> a
> > protocol stack.
>
> Why not write your wedge program as an eCos
> application which
> "does its thing" and then hands control over to
> Linux (which
> takes over the whole machine anyway)? Then you have
> full
> facilities to use (serial I/O, GDB debugging, etc).
>
> > Cheers
> > Dave
> >
> > --- Gary Thomas <gary@mlbassoc.com> wrote:
> >
> > > On Thu, 2005-10-27 at 14:40 -0400, Dave B. Sharp
> > > wrote:
> > > > Ultimatately I am creating a wedge program to
> go
> > > > between Linux and Redboot, so I want the
> program
> > > to
> > > > operate in the same mode as Linux (i.e. with
> mmu,
> > > > etc.).
> > >
> > > You still haven't explained what this program is
> to
> > > do.
> > > Why do you think you need a serial driver, etc?
> > > What do you mean a "wedge between RedBoot and
> > > Linux?"
> > >
> > > > Cheers
> > > > Dave
> > > >
> > > > --- Gary Thomas <gary@mlbassoc.com> wrote:
> > > >
> > > > > On Thu, 2005-10-27 at 14:20 -0400, Dave B.
> Sharp
> > > > > wrote:
> > > > > > I have an Arcom Viper PXA-255 Arm board
> with
> > > > > Redboot
> > > > > > and would like to create a simple "Hello
> > > World:
> > > > > > application that I can "exec" (not go); I
> > > gather
> > > > > there
> > > > > > is no GDB support. I am guessing that this
> > > > > probably
> > > > > > going to require some sort of rudamentary
> > > serial
> > > > > port
> > > > > > driver support. Can anyone help w/ source
> code
> > > or
> > > > > > pointers to info.
> > > > >
> > > > > What do you mean 'exec' instead of 'go'?
> The
> > > 'exec'
> > > > > command
> > > > > is really only designed for running Linux
> > > kernels.
> > > > > The 'go'
> > > > > command can be used for most anything else.
> > > > >
> > > > > If you explain why you're thinking on this
> path,
> > > > > maybe we
> > > > > can provide more data to help you along.
> > >
> > > --
> > >
> >
>
------------------------------------------------------------
> > > Gary Thomas | Consulting for
> the
> > > MLB Associates | Embedded world
> > >
> >
>
------------------------------------------------------------
> > >
> > >
> >
> >
> >
> >
> >
> >
> >
> >
>
__________________________________________________________
>
> > Find your next car at http://autos.yahoo.ca
> >
> --
>
------------------------------------------------------------
> Gary Thomas | Consulting for the
> MLB Associates | Embedded world
>
------------------------------------------------------------
>
>
__________________________________________________________
Find your next car at http://autos.yahoo.ca
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