[En-Nut-Discussion] Reading Program Memory Arrays

[Harald Kipp]

>
>What would be fantastic would be efficient routines to do the following.
>         u_char      uchar_P(  u_char  *p_uchar  );
>         u_short     ushort_P( u_short *p_ushort );
>         u_long      ulong_P(  u_long  *p_ulong  );
>
>Then it would be possible to do something like this.
>         a = b + ushort_P( &c ) + d;
>This is a lot easier to read and understand.

There has been a discussion in the AVRGCC mailing list,
wether the compiler should be able to automatically
detect ROM based variables and generate the proper
code.

I'm not sure about such a feature. One advantage
of C is, that it does _not_ hide everything. The
language is not only a high level language but also
a highly portable assembly language.

Harald