GDB-5.2 and Wiggler

Steven Grunza steven_grunza at ieee.org
Wed Feb 5 02:38:18 UTC 2003


Unfortunately Motorola decided to make the MPC745 debug port OCD instead of 
BDM.  The info needed to talk to the OCD (on chip debug) through the JTAG 
port is only available under NDA.

To make it even more fun the Macraigor Wiggler (an reportedly all of their 
products) does not support the MPC745 in 32-bit data bus mode.  Wanna guess 
in what mode my highly space constrained board is running?  Here's a 
hint:  every other long word is 0 when I dump memory with the Wiggler.... :(

We're currently using Windriver's visionICE but they don't support GDB 
(they have their own protocol to go from their source code debugger to the 
debug box).

Never a dull moment when working on embedded projects...

At 11:23 AM 10/17/2002 -0700, Phil Torre wrote:
>On Thu, Oct 17, 2002 at 05:39:15PM +0000, grunzasr at netzero.com wrote:
> > But what is the command you use to talk to the Wiggler?  Do you have a
>Wiggler.DLL or Wiggler.dll or Wigglers.DLL ... someplace in your system?
> >
> > Any info (.gdbinit stuff, command line stuff, anything) would be quite
>helpfull.  Thanks.
> >
> > Steven G.
>
>I've had both the Wiggler and the Raven working with gdb-4.18 under
>Cygwin on a windoze box, even though they're kind of flakey.  I
>also played with the package on www.ocdemon.com for Linux, but
>never got it working reliably.  (I see on the web site that they
>claim only the EDemon and Raven work with Linux.  Also, the Linux
>version is Linux-specific, so if you're using *bsd you'd be out
>of luck.)
>
>If you don't mind building a little hardware, take a look at
>bdm4gdb.sourceforge.net.  It works quite well, is faster than the
>Wiggler, and we have it running for both Linux and OpenBSD.
>
>-Phil
>
>
>




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