[ECOS] Re: printf or diag_printf prints $O48656c6c6f2c20776f726c64210a#75

["Ram Sudhir Tadavarthi" <ram dot tadavarthi at netco dot de>]

-----Ursprüngliche Nachricht-----
Von: Ram Sudhir Tadavarthi [mailto:ram.tadavarthi@netco.de] 
Gesendet: Donnerstag, 4. Mai 2006 09:13
An: 'Andrew Dyer'
Betreff: AW: [ECOS] printf or diag_printf prints
$O48656c6c6f2c20776f726c64210a#75

Dear Mr.Andrew & Mr.llandre,

That was it. I disabled the gdb mangler in the HAL and I can see the correct
output on the console. So I conclude that enabling gdb mangler redirects the
serial output to gdb remote protocol. Time for me to read and understand gdb
manuals to understand the things correctly.

Thanks a lot for your valuable info. 

Thanks & Regards,
Ram

-----Ursprüngliche Nachricht-----
Von: Andrew Dyer [mailto:amdyer@gmail.com] 
Gesendet: Mittwoch, 3. Mai 2006 19:43
An: Ram Sudhir Tadavarthi
Betreff: Re: [ECOS] printf or diag_printf prints
$O48656c6c6f2c20776f726c64210a#75

gdb has a facility to allow passing character streams across the gdb remote
protocol link.  That's what this message is (ignore the $O at the front and
the
#75 at the end and it's your text string in hex). For some reason your
target is
configured to redirect serial output over that gdb link.

On 5/3/06, Ram Sudhir Tadavarthi <ram.tadavarthi@netco.de> wrote:
> Hello all,
>
> AIM:
> To print "hello world\n" on console with eCos kernel in the project.
>
> WHAT I DID:
> I am a beginner to embedded world. I tried to bring up eCos on Motorola
> pq2fads(MPC 8260 powerpc) evaluation board. I used vads HAL as starting
> point and mostly finished the porting and was able to bring up the redboot
> ROM monitor. Serial and network interfaces are functional from redboot.
>
> PROBLEM DESCRIPTION:
> Redboot console messages are displayed properly. I have created an eCos
> image with hello world example(hello.c) and downloaded it over TFTP
through
> redboot "load" command and had given the "go" command.
>
> I have seen the following message as output instead of "Hello, world!\n"
>
> $O48656c6c6f2c20776f726c64210a#75
>
> After searching in google, I understood this message is some gdb response
to
> hello world message. But I did not use the debugger to download the image
> nor to run it. I did not understand why gdb came into picture when we try
to
> execute the image from redboot.
>
> This is the first time I have ever created an eCos Image. I hope it is not
a
> configuration error in my project.
>
> I am surprised why redboot which uses the same HAL works but the eCos
Image
> doesn't.
>
> I did not get how to proceed further from this point. I will be obliged if
> some one can give me pointers/suggestions/references to solve the problem.
>
> For reference, I have enclosed the hello.c file. Please let me know If I
> miss to provide any important message.
>
> Thank you very much,
> Ram
> PS: tried to enclose ".ecc" file
> ezmlm-reject: fatal: Sorry, I don't accept messages larger than 128000
bytes
> (#5.2.3)
>
>
> hello.c
> #include <stdio.h>
>
> int main(int argc, char *argv[])
> {
>     printf("Hello, world!\n");
>     exit(0);
> }
>
>
> --
> Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
> and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
>
>


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