[ECOS] Re: STM3210E crash

[John Dallaway <john at dallaway dot org dot uk>]

[ re-sending with copy to ecos-discuss ]

Hi Alan

Alan Bowman wrote:

>> Some board vendors will fit alternative parts on request. Perhaps your
>> particular board has been customised?
> 
> As far as I'm aware, this is a standard eval board.  The printing on
> the top of the chip clearly says ZD - I may investigate whether it's a
> printing error, rather than an alternative part.
> 
> It sounds like ROM startup is mainly used for Redboot to then load an
> application into RAM.  I'm trying to use as little RAM as possible,
> and don't need Redboot.  Am I correct in thinking that ROM startup
> mode for my application should be what I'm after?

The STM3210E-EVAL board is attractive for many developers because it
features sufficient (external) RAM to permit initial application
development in RAM. This generally allows a faster download/debug cycle
and provides greater flexibility in the use of breakpoints. However, I
would expect many production Cortex-M3 designs to feature no external
RAM, requiring a switch to ROM startup later in development in order to
reduce RAM usage.

For avoidance of doubt, you can use RAM startup without RedBoot by
disabling CYGSEM_HAL_USE_ROM_MONITOR.

I hope this helps...

John Dallaway
eCos maintainer

-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss