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Re: printf in Redboot/GDB


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()'?

-- 
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Gary Thomas                  |
eCosCentric, Ltd.            |  
+1 (970) 229-1963            |  eCos & RedBoot experts
gthomas@ecoscentric.com      |
http://www.ecoscentric.com/  |
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