[ECOS] building problem with redboot

[Jesper Skov]

On Tue, 2002-03-12 at 03:35, Jing Luo wrote:
> Thanks for your reply. I tried what you suggested, but still have problems
> which I described following your answer.
> 
> -----Original Message-----
> From: Jesper Skov [mailto:jskov@redhat.com]
> Sent: Sunday, March 10, 2002 11:14 PM
> To: Jing Luo
> Cc: eCos Discuss
> Subject: Re: [ECOS] building problem with redboot
> 
> 
> On Wed, 2002-03-06 at 03:12, Jing Luo wrote:
> > Hi,
> > 
> > 1. I got a building problem when I want to have GDB debug function with
> > redboot as the following.
> > The detailed build output is as the attachment.
> > The prblem is cyg_start have conflict definition in main.c and stubrom.c
> > when it try to build gdb_module.o.
> > I choosed CYGBLD_BUILD_GDB_STUBS & CYGBLD_BUILD_COMMON_GDB_STUBS &
> > CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT in cfgtools.
> 
> All you have to do is build for the RedBoot template (i.e., ecosconfig
> new <platform> redboot). Don't change any of the GDB related options.
> They are all correct.
> 
> 
> [Result] After build with Redboot template, downloaded to 80200 board, start
> GDB, try to connect, it spends about 10 senconds and showed up successfully
> connected, but when I try to download files to the board, it said no
> connection to target.
> Try to connect from console:
> (gdb) set remotebaud 57600
> (gdb) target remote com2
> Couldn't establish connection to remote target
> Malformed response to offset query, timeout

Well, one idea would be to reduce the baud rate to 38400 or lower if you
have serial problems, which it appears you do.

> > 2. Thanks for your guys' help, I ported redboot to 80200. It can be booted
> > into redboot now. :-)
> > But When I load -m xMODEM, it takes about 10 seconds to get 'C' prompt. I
> > can't figure out why it takes such a long time. The source code only takes
> > about 500000us. Why?
> 
> Your HAL_DELAY_US macro/function does not work correctly, it would
> appear. That's where you should look.
> [Result] I changed HAL_DELAY_US, the clock cycle showed up right. But I
> can't download 282 Bytes file via Redboot with timeout.
> But before the change, the clock cycle is wrong, but downloading succeeded.

Maybe because you are too long about starting the download. X-modem is
timing sensitive. Try Y-modem instead.

Jesper


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