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Message

Re: JTAG debugging options

2006-01-03 by rtstofer

--- In lpc2000@yahoogroups.com, Sean <embeddedrelated@w...> wrote:
>
> 
> Ok, the one I saw was
> 
> 
http://www.gwmicros.com/public_html/pages/products/iproducts/BDM_JTAG
/Macraigor/BDM-JTAG_Macraigor_usbDemon.htm
> 
> or
> 
> 
http://www.gwmicros.com/public_html/pages/products/iproducts/BDM_JTAG
/Macraigor/BDM-JTAG_Macraigor_Raven.htm
> 
> both 818EUR
> 
> And their wiggler is 188 EUR.  Yes, most others I see are in the 
$150 - 
> $300 range.
> 
> I'm just trying to understand here.  I can see how originally 
there were 
> few (expensive) options, and there was a lot of design and support 
and 
> software creation necessary, so yes, it was expensive.  However 
from the 
> point of view of anyone who is starting a design, be it a starving 
student 
> or a multinational corporation, what do the expensive emulators do 
that I 
> can't do with a $1 DIY one?  Can I get by with a DIY one, or 
should I 
> actually fork out the cash for the name-brand ones?  Let's assume 
that I 
> need to do non-trivial debugging here.

Well then, if you want to do non-trivial debugging, you'll certainly 
hate Insight->OCD Remote->Wiggler clone.  As James Lynch points out 
in his excellent tutorial, there are days when it just won't work.  
To be blunt, it sucks.  It isn't worth the aggravation to get it 
working; printf works better.

Now, Tom Walsh is more than happy with his high dollar solution 
(Abatron BDI2000) and if I were doing this for money, I would buy 
the same interface he has.  If I could find a distributor in the 
US...

And, if the US$ wasn't complete worthless when converted to British 
Pounds, I might consider the Rowley CrossConnect package.

Richard



> 
> I too am a fan of alternate methods for debugging, or creating 
modules on 
> the PC and then porting them, or loggers, or serial port dumps, 
however 
> there are times when having an ICE makes it a lot easier to figure 
out.
> 
> Thanks for the advice,
> 
> -- Sean
> 
> 
> At 10:35 PM 1/2/2006, you wrote:
> >Sean wrote:
> > > Easy, Tiger :)   Yes... I understand that time = money.
> >Since I'm not speaking to you face to face I just cut to the 
chase :)
> >
> >
> > > Perhaps I have misunderstood something.  Is this not a Wiggler-
compatible
> > > interface?
> > >
> > > 
> > 
<http://www.micronix.ca/sbc213x_main.htm>http://www.micronix.ca/sbc21
3x_main.htm
> > > 
http://www.micronix.ca/catalog/product_pages/images/JTAG02_SCH_011.jp
g
> > >
> > >
> > > Perhaps I should rephrase my original question:
> > >
> > > What JTAG debugging options are there, and what's the 
difference between
> > > the ~$150 and > $1000 board options?
> >
> >The JTAG-02 is only CAD $35, I'm not sure where you find the $150
> >option. The Keil ULINK (USB) is only $199 but I'm not aware of any
> > >$1000 options. As James pointed out, the basic hardware is
> >straightforward but the driver software is a different story 
altogether.
> >
> >*Peter*
> >
> >
> >
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