Lpc2000

Dear Rob

Will you publish your Jtag design or is it commercial ?

Cheers
Michael


>From: "Rob Jansen" <rob@...>
>Reply-To: lpc2000@yahoogroups.com
>To: lpc2000@yahoogroups.com
>Subject: Re: [lpc2000] JTAG Debugger
>Date: Wed, 26 Oct 2005 15:31:00 +0200 (CEST)
>
> >     Hi,
> >
> >  I have a Agilent E5900B emulation probe that I've been trying to get
> >  working on a LPC2134 with ADS.  It works fine on my AT91 dev board,
> >  but I cant get it to work in ADS with the LPC2134.  Note that this
> >  probe is ARM7TDMI not -S.  I seem to have some success (RESET, STOP,
> >  RUN, and STEP, and poll register etc..) using the telnet interface
> >  when I disconnect the RTCK pin.  But either way I get alot of Data
> >  Aborts in ADS.
>
>I also had some problems (with a Jeeni). It seems to work sometimes or up
>to a certain moment and then strange errors pop up.
>
>Meanwhile I am developing my own JTAG probe - using RTCK I get to about 2
>MHz on the jtag clock (14.7 MHz crystal).
>There are indeed some differences between the TDMI and the -S version that
>may render your TDMI debugger unusable. The TDMI has a third public jtag
>chain and (as far as I remember) supports both INTEST and EXTEST.
>
>A wiggler may do OK for you but I don't like the use of the printer port
>(apart from not being available on my laptop). Therefor I decided to go
>for a debuggerpod that is connected via Ethernet, using the RDI protocol
>which makes it suitable for a wider range of debugger software.
>Software is not yet finished, I keep running into small problems from time
>to time ...
>
>If the Agilent uses RID, try using another debugger (e.g. gdb). I found
>that I could do some debugging with the Jeeni via the RealView debugger
>but was not able to do anything with GDB. It may be the other way around
>for you.
>
>Regards,
>
>     Rob
>