Lpc2000

----- Original Message ----- 
From: "Bill Knight" <BillK@...>
To: <lpc2100@yahoogroups.com>
Sent: Wednesday, February 04, 2004 12:56 PM
Subject: [lpc2100] JTAG Connect Problems


>   I've been ignoring this problem for too long.  It's time to
> determine if everyone has experienced it or if it is something I'm
> doing.
>   I'm using gcc, gdb/Insight, and Macraigor's Wiggler & OcdLibRemote
> to build and debug programs running from RAM on a Nohau LPC210x TESTER
> Board.  A majority of times when I try to connect to the LPC via
> OcdLibRemote from gdb/Insight, OcdLibRemote reports "Cable
> Disconnected" and gdb/ Insight does not connect.  Additional attempts
> to connect to the same OcdLibRemote session fail within gdb/Insight
> even though OcdLibRemote reports success.  The whole thing will
> eventually connect after multiple attempts of exiting both
> OcdLibRemote & gdb/Insight, and various pressings of the RESET button
> on the Nohau board.
>   Another issue I remember while writing this is that once connected
> and debugging with Insight, it is possible to step through and debug C
> source code but not possible to view the underlying assembly code.
>   Both of these problems exist for multiple versions of gcc and gdb/
> Insight.  So for both issues, has anyone else had either problem and
> importantly, have they been able to find a resolution?
>
> Thanks for any suggestions and help you may provide.
> -Bill Knight

The Nohau board, cable or Wiggler might have an intermittent fault. It might
be worth seeing if you can borrow units you can swap, to isolate the
problem. Or, try flexing the various units to see if that affects things.
It's quite easy to remove the case of the Wiggler, by levering the halves
apart with a screwdriver.

Leon
--
Leon Heller, G1HSM
Email: aqzf13@...
My low-cost Philips LPC210x ARM development system:
http://www.geocities.com/leon_heller/lpc2104.html