Re: [ECOS] Question about Hello World eCos example

[Andre Sebastien <sebastien dot andre at sxb dot bsf dot alcatel dot fr>]

Thanks a lot Robin Farin and Rob Jansen !!

So now it s work nice !!! but Robin Farin what is exactly this component
CYDBG_HAL_DIAG_TO_DEBUG_CHAN ???
it seems to disable the GDB PROTOCOLS for the SERIAL ports ?


How can i know the behaviour of these components ?

thx.


Sebastien.


Robin Farine wrote:

> Andre Sebastien <sebastien.andre@sxb.bsf.alcatel.fr> writes:
>
> [...]
>
> > It s exactly that i try to print : printf("Hello, eCos world! %d \n",5);
> >
> > PS: what is $0 and #BB at the beginning and the end of output ?
>
> Not $0, but $O (O packet). The GDB protocol uses such packets to output text
> non-related to GDB itself (e.g. your printf). The protocol also appends a
> checksum to every packet, the #BB in your case.
>
> > But never the program go out the function "printf", it seems to go in a
> > infinite loop !!!!!  What does it wrong ?
>
> It's waiting for an ack from the remote side of a GDB connection !!!!!
>
> Try to set the option below in your ecos.ecc:
>
>     cdl_component CYGDBG_HAL_DIAG_TO_DEBUG_CHAN {
>         user_value 0
>     };
>
> [...]
>
> Robin