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Re: printf in Redboot/GDB
- From: Gary Thomas <gthomas at ecoscentric dot com>
- To: Scott Dattalo <scott at dattalo dot com>
- Cc: eCos Discussion <ecos-discuss at sources dot redhat dot com>
- Date: 10 Oct 2002 17:44:15 -0600
- Subject: Re: [ECOS] printf in Redboot/GDB
- References: <Pine.LNX.4.44.0210101622090.13671-100000@ruckus.brouhaha.com>
On Thu, 2002-10-10 at 17:40, Scott Dattalo wrote:
>
> The question is which option in the ecos.ecc config file enables printf
> output?
>
> I've built redboot for my custom hardware - something like an EB40a, but
> not. (I'm not using Thomas' or Tim's patches at the moment, but look
> forward to doing so soon [meanwhile I've hacked the eb40 port to remove
> the hardcoded memory constants]). I've selected the redboot_ROM target;
> i.e. redboot runs in flash. I've got gdb talking to the board and I can
> debug just fine - except that printf's don't print.
>
> >From what I've read, it would seem that
>
> CYGDBG_HAL_DIAG_TO_DEBUG_CHAN
>
> is the cdl component that needs to be enabled.
>
>
> One more observation: when I run redboot out of RAM and not ROM, the
> printfs do work. Is there some kind of issue with CYG_HAL_STARTUP being
> set to ROM instead of RAM that affects the printf's?
Are you trying to use 'printf()', as opposed to 'diag_printf()'?
--
------------------------------------------------------------
Gary Thomas |
eCosCentric, Ltd. |
+1 (970) 229-1963 | eCos & RedBoot experts
gthomas@ecoscentric.com |
http://www.ecoscentric.com/ |
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