Re: [lwip-devel] Re: LWIP_DEBUG in the ethernet_input function

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Martin Velek wrote:
> Hi,
>
> I am using usprintf from stellaris luminary package. It is a simple
> replacement of sprintf with only %c, %d, %p, %s, %u, %x, and %X
> formatting characters and support for zero filling & number of digits.
>
> So %2hx, %hhx gives me error because %h is unsupported. My cc.h definitions are:
> #define U8_F "c"
> #define S8_F "c"
> #define X8_F "x"
> #define U16_F "u"
> #define S16_F "d"
> #define X16_F "x"
> #define U32_F "u"
> #define S32_F "d"
> #define X32_F "x"
>
> Question is why are not used macros in function ethernet_input but in
> all other places are.
That's because it has not been done yet. And the format (%2hx) is not 
used anywhere else, I think. However, I don't think there's a problem 
introducing a (predefined, overridable) define for this, only we had to 
understand what whas going wrong to know how to design the format. In 
this case, defining it to "hx" would be OK, I guess.

Simon