Re: [ECOS] Re: Is there any good method to debug eCos application in RAM limited board?

[Peng Liu <peng dot liu6 at yahoo dot com>]

I just want a quick method to verify my change sometime, so I config eCos to boot from RAM and load it to internal RAM with GDB+JTAG. Unfortunately that method is not stable. You know it's boring to burn the image to flash just for testing of minor update.

Anyway, I agree with your opinion. Actually, it's OK for me if no good debug method available. But a little is better than none, isn't it? :-)


/Peng

--- On Thu, 8/12/10, Grant Edwards <grant.b.edwards@gmail.com> wrote:

> From: Grant Edwards <grant.b.edwards@gmail.com>
> Subject: [ECOS] Re: Is there any good method to debug eCos application in RAM limited board?
> To: ecos-discuss@sources.redhat.com
> Date: Thursday, August 12, 2010, 2:58 PM
> On 2010-08-12, Peng Liu <peng.liu6@yahoo.com>
> wrote:
> 
> > I have made Redboot up and running in my STM32 Dev
> board. But
> > unfortunately I found it's quite difficult to debug
> the eCos
> > applications on my board.
> >
> > My Dev boards is based on stm32f103vet6, and there's
> no external RAM
> > in the board, only 2M NOR flash is available.
> >
> > Because there's only 64KB RAM in the system, I found
> it's impossible
> > to debug my eCos application with Redboot. So I tried
> to debug
> > applications with GDB. I can load the application
> (smaller than 64KB)
> > to RAM, and sometimes can debug it. But most time the
> GDB session
> > would hang...
> >
> > By the way, OpenJTAG was used in my test.
> >
> > Does someone have good idea about the debugging?
> 
>  1) Debugging using GDB+JTAG shouldn't require any target
> RAM.
> 
>  2) Debugging by adding strategic diag_printf() statements
> works even
> ? ? on small targets.
> 
>  3) The best way to debug is to look at the source code and
> think.
> 
>  4) Another good option is to test your module under
> another OS
> ? ? (Linux, Windows, whatever).
> ? ? 
> -- 
> Grant Edwards? ? ? ? ? ?
> ???grant.b.edwards? ? ? ?
> Yow! Am I elected yet?
> ? ? ? ? ? ? ? ?
> ? ? ? ? ? ? ? ?
> ? at? ? ? ? ? ?
> ???
> ? ? ? ? ? ? ? ?
> ? ? ? ? ? ? ?
> gmail.com? ? ? ? ? ? 
> 
> 
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> 




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