[ECOS]standalone eCos & proc frequency

[ECOS]standalone eCos & proc frequency

[Andrea Acquaviva]

Hi,

I have a 2 simple question:

1. In order to make a standalone eCos program that runs in flash whitout
gdb,
    I made the following steps:
    - I set Startup type to ROM ( CYG_HAL_STARTUP = ROM) in ecos.ecc
       and recompile eCos;
    - I linked the program with eCos;
    - I converted the elf executable in a binary format and download it
into the flash;
    but the executable doesn't work at all.
    Is this the correct procedure?

2. When I use gdb, the processor frequency must always be the same for
the gdb stub
    and eCos, right?

(I use eCos on an Assabet board.)

Thanks,
Andrea.


--
Ing. Andrea Acquaviva
D.E.I.S. - Universita' di Bologna
V.le Risorgimento, 2    40136 BOLOGNA (ITALY)
Tel: (+39) 051 20 93787 Fax: (+39) 051 2093786

Re: [ECOS]standalone eCos & proc frequency

[Lewin A.R.W. Edwards]

Hi Andrea,

>1. In order to make a standalone eCos program that runs in flash whitout
>gdb,
>     I made the following steps:

I strongly suggest you delete your eCos build tree before rebuilding. I had 
similar problems, and they were eventually tracked down to un-cleaned-up 
leftovers in the build directories. Just move your ecos.ecc out, rm -rf *, 
move the ecos.ecc back in, and ecosconfig tree then make.

The procedure you describe is correct, so I'm pretty sure the above is your 
problem.

I don't know about your other question.

=== Lewin A.R.W. Edwards (Embedded Engineer)
Work: http://www.digi-frame.com/
Personal: http://www.zws.com/ and http://www.larwe.com/

"Und setzet ihr nicht das Leben ein,
Nie wird euch das Leben gewonnen sein."

Re: [ECOS]standalone eCos & proc frequency

[Jonathan Larmour]

Andrea Acquaviva wrote:
> 
> Hi,
> 
> I have a 2 simple question:
> 
> 1. In order to make a standalone eCos program that runs in flash whitout
> gdb,
>     I made the following steps:
>     - I set Startup type to ROM ( CYG_HAL_STARTUP = ROM) in ecos.ecc
>        and recompile eCos;
>     - I linked the program with eCos;
>     - I converted the elf executable in a binary format and download it
> into the flash;
>     but the executable doesn't work at all.
>     Is this the correct procedure?

I take it you've succeeded with a similar process when programming RedBoot
(or GDB stubs) right?
 
> 2. When I use gdb, the processor frequency must always be the same for
> the gdb stub
>     and eCos, right?
> 
> (I use eCos on an Assabet board.)

The GDB stub acts primarily as a loader, and its debugging abilities are
independent of the clock, so I would guess it wouldn't matter that much
actually.

Jifl
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