Re: [ECOS] Can't connect to remote Evaluator 7T

Pierre Habraken
2003-02-19T15:59:52Z

Here is the contents of gdblog.txt :
w +$Hc-1#09
r <Timeout: 2 seconds>
w $Hc-1#09
r <Timeout: 2 seconds>
w $Hc-1#09
r <Timeout: 2 seconds>
w $Hc-1#09
r <Timeout: 2 seconds><Timeout: 2 seconds>
w -
r <Timeout: 2 seconds>
w -
r <Timeout: 2 seconds>
w -+$qC#b4
r <Timeout: 2 seconds>
w $qC#b4
r <Timeout: 2 seconds>
w $qC#b4
r <Timeout: 2 seconds>
w $qC#b4
r <Timeout: 2 seconds><Timeout: 2 seconds>
w -
r <Timeout: 2 seconds>
w -
r <Timeout: 2 seconds>
w -+$qOffsets#4b
r <Timeout: 2 seconds>
w $qOffsets#4b
r <Timeout: 2 seconds>
w $qOffsets#4b
r <Timeout: 2 seconds>
w $qOffsets#4b
r <Timeout: 2 seconds><Timeout: 2 seconds>
w -
r <Timeout: 2 seconds>
w -
r <Timeout: 2 seconds>
w -+
End of log

What is strange is that if I quit gdb and then launch kermit at once
without resetting the board, then redboot is there responding to
commands such as 'version'. It looks like if redboot is prepared to
execute basic commands but not to talk to gdb...
About the serial settings, I did not find any gdb command allowing to
change anything but the baudrate. I know that the speed is correct
(38400) but have no idea concerning the others parameters (parity,
etc.).

Pierre

Jonathan Larmour wrote:
>
> Pierre Habraken wrote:
> >
> > Now I want to use RedBoot instead of Angel.
> > I uploaded redboot.UU onto the board and then verified (using a
> > communication program) that redboot was properly installed (see redboot
> > banner below).
> > But when I launch arm-elf-gdb and type the command 'target remote
> > /dev/ttyS0' then gdb fails to talk to redboot :
> > =================================================================
> > $ arm-elf-gdb
> > GNU gdb 5.2
> > ...
> > This GDB was configured as "--host=i686-pc-linux-gnu --target=arm-elf".
> > (gdb) set remotebaud 38400
> > (gdb) target remote /dev/ttyS0
> > Remote debugging using /dev/ttyS0
> > Ignoring packet error, continuing...
> > Ignoring packet error, continuing...
> > Ignoring packet error, continuing...
> > Couldn't establish connection to remote target
> > Malformed response to offset query, timeout
> > =================================================================
> > Could it be that the serial line is not configured as required on the
> > gdb side ? (using ckermit I had to force parity to none...)
>
> Possible, but unlikely since you're receiving stuff at all (packet errors,
> not just timeout) and I assume you have the baud rate right :-).
>
> Before target remote you could do:
>
> set debug remote 1
>
> to see what that says. If that doesn't reveal anything interesting then
> (if I'm remembering right) you can also do:
>
> set remotelogfile gdblog.txt
>
> before the target remote, which should give a slightly more accurate
> version of what was sent/received, into the file gdblog.txt.
>
> Jifl
> --
> eCosCentric http://www.eCosCentric.com/ The eCos and RedBoot experts
> --[ "You can complain because roses have thorns, or you ]--
> --[ can rejoice because thorns have roses." -Lincoln ]-- Opinions==mine

--
________________________________________________________________________
Pierre HABRAKEN - mailto:Pierre.Habraken@imag.fr
Tél: 04 76 82 72 83 - Fax: 04 76 82 72 87
IMAG-LSR BP72 38402 SAINT MARTIN D'HERES Cedex
________________________________________________________________________