Re: [lwip-users] Debugging doesn´t work with HTTP example

[Sergio R. Caprile]

It is not a matter of "compatibility" but doing things right or wrong, 
you either do things the right way or you violate the rules of your 
working environment.
If you are suspicious on printf(), then don't use it, your port should 
have the correct output function and you should be able to ask about 
this on your RTOS forums.
As for lwIP, the output function is defined as
LWIP_PLATFORM_DIAG(message);
and that function belongs to your port, and it should be defined in 
arch/cc.h by the ones who did it (Atmel ?, the FreeRTOS guys ?); the 
exact location of that file depends on their choice.

Furthermore, now you say you are using an RTOS... You must check your 
port is not violating the single-threading rules, exactly which HTTP 
server code are you using ? With which API ? Is it lwIP original code ? 
Is it vendor modified ? Which lwIP version ?