[avr-gcc-list] Re: ROM data and far and huge ptrs

[Niklas Brogden]

Ted Roth wrote....(clipped)
>
>
> The fix is to change the for loop to something like this:
>
>     //but strcpy_P copy char from wrong address if use variable indexing
>     for (i=0; i<2; i++)
>     {
>         PGM_P ptr = (PGM_P) pgm_read_word (Langs[i]);
>         strcpy_P(buf[i], ptr);
>     }
>
I still had problems with this solution, but I now see the cause of the
problem.

Changing a line above to reference the flash string pointer array directly:

PGM_P ptr = (PGM_P) pgm_read_word (Langs+i);

has fixed the problem once and for all. (Big sigh of relief...)


>
> This time Z is used by the LPM insn to get the pointer for foo from
> flash.
>
> Hope that helps clear things up. I also hope I didn't get this wrong, if
> I did, hopefully someone will catch my mistake. ;-)
>
> ---
> Ted Roth


Big Thankyou from NIK...



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