Lpc2000

Leon,

> > Has anyone in the group had a lot of experience debugging 
> the LPC via 
> > the JTAG interface?  We have had a lot of problems on a previous 
> > AMR7TDMI processor with a nTRST.  Simply connecting it from 
> the JTAG 
> > connector to the processor was not enough to consistently get the 
> > processor into debug mode.  The manufacturer has removed the signal 
> > fom the processor on newer family members.
> >
> > In chasing the problem I have seen several bits of circuitry for 
> > addressing the problem on other ARM7TDMI designs.  I'm wondering if 
> > the LPC is going to need something in order to get it to work 
> > reliably.
> 
> The Rowley Associates debugger works fine for me with a 
> Wiggler. I've got details of the connections I'm using on my web site.
> 
> Leon
> --
> Leon Heller, G1HSM
> Email: aqzf13@...
> My low-cost Philips LPC210x ARM development system: 
> http://www.geocities.com/leon_heller/lpc2104.h> tml

I think Jon has done an awful lot of work on the wiggler's driver and
knows an awful lot about how reset is or isn't wired in a whole bunch of
ARM chips.  I don't know whether Mike or Jon hang out on this list (I
think it's a spam issue), but I'm sure they can spill the beans.

I know that our USB CrossConnect for ARM currently does work with the
ARM chips we have here.  However, I just wrote the firmware for it, I
didn't write the controlling software which runs under the IDE.  It's
pretty fast too, it can load about 100Kbyes/second.

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