Re: [avr-gcc-list] String array in ROM gives error in spite of following example code.

[Royce Pereira]

Thanks, Joerg,

This is news to me :) !

I googled for '__flash qualifier in AVR-GCC' and I understand that
using __flash eliminates the need for 'pgm_read_byte(&flashLocation)'
?

That is, you read it directly (like other ram variables), and avr gcc
will read it from flash automatically ?


On Fri, Jun 13, 2014 at 11:19 AM, Joerg Wunsch <address@hidden> wrote:
> Royce Pereira <address@hidden> wrote:
>
>> Even the libc documentation, which was once the bible of avr-gcc on
>> this is not accurate. The sample code just does not work.
>
> Apparently, nobody noticed before.  Please, file a bug report
> to the avr-libc project, so we can fix that.
>
> The question here (as always) is whether you really want both, the
> strings itself as well as the pointers (table of it) in flash.  The
> table is quite small, and could as well be kept in RAM unless you are
> very thight on RAM.
>
> As the compiler now understands the __flash qualifier, using that
> would make it a lot easier.
> --
> cheers, Joerg               .-.-.   --... ...--   -.. .  DL8DTL
>
> http://www.sax.de/~joerg/
> Never trust an operating system you don't have sources for. ;-)
>
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-- 
Best Regards,

-- Royce Pereira