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Re: [lpc2000] Wiggler JTAG problem

2004-04-13 by Johan Forrer

--- Leon Heller <leon_heller@...> wrote:
> 
> ----- Original Message ----- 
> From: "Johan" <jbforrer@...>
> To: <lpc2000@yahoogroups.com>
> Sent: Sunday, April 11, 2004 12:03 AM
> Subject: [lpc2000] Wiggler JTAG problem
> 
> 
> > Greetings,
> >
> > Being a little green with LPC2106 debugging, I
> need some help.
> >
> > I have the Olimex LPC2106 dev. board and it
> appears to function fine
> > with the Philips ISP software, also the supplied
> test program in
> > flash works fine.
> >
> > Now am trying to get my (home made) Wiggler to
> work with it, but keep
> > getting a message from OcdLibRemote to the effect
> that the "cable is
> > not connected". The DBGSEL jumper is inserted
> (i.e., pin 27 pulled
> > high) and the board seems to have NTRST pulled
> high as well (NC on
> > the Wiggler interface).
> >
> > When connecting this same JTAG debug hardware to
> my EB40A, it works
> > just fine. So, I guess it must be something with
> the LPC2106 or
> > perhaps circuit loading thats different?
> >
> > Scoping the RST line, the EB40A comes nicely out
> of reset under
> > control of OcdLibRemote, but all I see for the
> Olimex board is a
> > brief blip on the RST line.
> 
> Have you tried it with OCD Commander? That is what I
> used for getting my
> interface working.
> 
> Leon
> 

Thanks for the suggestion Leon --- OCD Commander seem
to work OK with my JTAG debug hardware. 

I suspect a hardware initialization issue with
OCDLibRemote and the LPC210x. It is possible to do
device initialization when OCDLibRemote starts up that
may solve this initialization issue, not sure exactly
how yet. 

Has anyone been successful in using the LPC2106 with a
WIGGLER using OcdLibRemote?

Thanks,

Johan

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