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

[Sergio R. Caprile]

Your "HTTP example for the SAM4E xplained pro board" has a layer-2 
driver for the Ethernet controller, a port for the environment (be it 
bare metal or OS: NO_SYS=?), the lwIP stack (version ?), the httpd 
server (RAW API or netconn, is it lwIP's ?), the example itself (which 
should be a safe bunch of html files but might have CGIs...), plus, your 
debugging output is using some form of printf(), which is provided by 
your environment.

I suggest you check with the ones who put that thing together, the ones 
here who do things as recommended enjoy the good work of the lwIP 
developers and debug on many platforms; check if that people payed 
attention to the rules of single threading for low-level functions, it 
is one of the most common mistakes. Check how your port tries to output 
debugging info also, that might cause lots of bottlenecks leading to who 
knows what if they didn't foresee that when they built the port.