Em 12/9/2010 12:18, PICdude escreveu:
> I'm finally going to start really using a higher (than 8-bit) PIC and =20
> also looking into Atmels and C instead of assembly (for the PIC too).  =20
> Since there will be optimizations, how would timing-specific code =20
> (such as bit-banging) be done?  Are these pieces put into inline =20
> assembly, or is there a way to use C code with known timing?
>
> Cheers,
> -Neil.

Inline assembly is one option. Another would be to write the routines in
an all-assembly module with the correct structure to be called from C.

Don't forget that higher-end processors use caches, DMA, dynamic RAM and
several other things that may interfere with the code execution speed.
So their timing may be much less deterministic than a PIC.


Best regards,

Isaac

__________________________________________________
Fale com seus amigos  de gra=E7a com o novo Yahoo! Messenger=20
http://br.messenger.yahoo.com/=20
--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.