This is the mail archive of the
gdb@sources.redhat.com
mailing list for the GDB project.
Re: Failed to connect to OCD.
- To: IGOR LURI <iluri at fagorautomation dot es>
- Subject: Re: Failed to connect to OCD.
- From: leonp at plris dot com
- Date: Tue, 05 Jun 2001 18:45:34 +0200
- Cc: gdb at sourceware dot cygnus dot com
At 16:32 05/06/01 +0200, you wrote:
> > I am using Insight-5.0 with wiggler for mpc823 on a win 2000 hosted
>system.
> > I am using Cygwin and cross compiler for powerpc-eabi target.
> >
> > I am not able to connect to the target. When I write this command on the
> > gdb console apears the following error:
> >
> > (gdb) target ocd wiggler lpt1
> > Remote target wiggler connected to wiggler lpt1
> >
> > Error: OCD_INIT: Couldn't establish connection to remote target
> > Unknown error code 24
> > Failed to connect to OCD.
> >
> > If you are using wiggler to connect your target, please say me how you
>done.
0. Your problem looks like the problem of contacts. Check that your wiggler
is working properly by using the Macraigor's OCD debugger.
1. There is some bug/problem with mpc860/823 CPU's in gdb - you need to
define the CPU type and thus the registers will become accessible, but this
not happens. I just now simply use an old version of gdb 4.18, which is
free of this bug.
2. Another problem, that you must be aware is that you must perform several
initializing commands, such as define chip selects, IMMR, etc. to make the
system capable of downloading the code.
Leon Pollak
leonp@plris.com