Lpc2000

Perhaps you should take a look at our product, CrossWorks for ARM, which
has integrated flash downloading using the wiggler and you can single
step at the C level in flash without any problems.

Regards,

--
Paul Curtis, Rowley Associates Ltd http://www.rowley.co.uk
CrossWorks for MSP430, ARM, and (soon) Atmel AVR processors 

> -----Original Message-----
> From: c_hall2001 [mailto:c_hall2001@...] 
> Sent: 25 March 2004 17:07
> To: lpc2000@yahoogroups.com
> Subject: [lpc2000] Re: ARM newbie
> 
> 
> OK, maybe I'm missing something because my JTAG debug knowledge is 
> only from 8bit micros (mainly AVR's).  As I understood things the 
> first thing that happens in a JTAG debug is loading the program into 
> memory.  If a particular JTAG (wiggler in this case) cannot load 
> flash then I assume that debugging a flash based program cannot be 
> done.
> I'm thinking I better complete my reading of the ARM manual and the 
> LPC datasheet before bugging you guys again.
> 
> --- In lpc2000@yahoogroups.com, Robert Adsett <subscriptions@a...> 
> wrote:
> > I would expect everyone who uses JTAG for programming to take much
> the same 
> > approach.  Especially since it's the one Philips documents.  As
> far as not 
> > disclosing how the flash works they are not the only vendors that
> do 
> > that.  At least one vendor started with fully disclosed timing and
> on 
> > revision (when they changed the flash) changed to used a callable
> embedded 
> > routine.  In that latter case the called routine wasn't even in
> the micros 
> > normal address space.
> > 
> > As far as using the wiggler with GDB and GCC it will work with
> some 
> > restrictions.  Single stepping through assembly in flash is fairly
> > straightforward but I haven't found a way to single step through C 
> in flash 
> > yet.  I have, however, found recently that it is possible to set a
> > breakpoint anywhere fairly simply.  You end up with a useful but 
> primitive 
> > tool (don't underestimate the power of a primitive tool).
> > 
> > Robert
> > 
> > " 'Freedom' has no meaning of itself.  There are always
> restrictions,
> > be they legal, genetic, or physical.  If you don't believe me, try
> to
> > chew a radio signal. "
> > 
> >                          Kelvin Throop, III
> 
> 
> 
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