Lpc2000

----- Original Message ----- 
From: "Robert Adsett" <subscriptions@...>
To: <lpc2000@yahoogroups.com>
Sent: Thursday, March 25, 2004 10:41 PM
Subject: Re: [lpc2000] Re: ARM newbie


> At 05:08 PM 3/25/04 +0000, you wrote:
> >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.
>
> Actually the wiggler is agnostic on the issue.  It's the software using
the
> wiggler that needs to support programming the flash.  It is also quite
> possible to debug in flash using JTAG w/o programming the flash over JTAG,
> the two are quite independent (other than using the same communications
> channel).  I often use GDB to debug in flash over JTAG and use the serial
> connection for programming the flash.
>
> Debugging in flash requires that the debugger support the HW debugging
> registers in the LPC. GDB's  support in this area is incomplete but
useable.
>
> Paul's suggestion of getting a debugger that supports the wiggler more
> completely is probably a good one.  I haven't used his product so I can't
> testify as to its usefulness.

It works very well.

Leon