Lpc2000

De FIQ never uses the VICVectAddr register (FIQ routines cannot be 
vectored), so it is not needed
to clear the FIQ by writing to VICVectAddr.

Richard Duits


Marko Panger wrote:

> Hi all,
>
> I have a doubt regarding the handling of the VICVectAddr register in a
> FIQ rutine.
>
> My VIC is setup in such a way that I have just one source selected as
> FIQ, thus is not vectored as other IRQs are.
>
> Do I still have to acknowledge and update priorities near the end of
> the FIQ handler by writting the VICVectAddr = 0; ?
>
> I dont get the users manual very well at this point as it says that
> the VIC should be updated for vectred interrupts, but my FIQ is not
> vectored.
>
> Any advice ?
>
> Regards,
> marko
>
>
>
>
>
> ------------------------------------------------------------------------
> YAHOO! GROUPS LINKS
>
>     *  Visit your group "lpc2000
>       <http://groups.yahoo.com/group/lpc2000>" on the web.
>        
>     *  To unsubscribe from this group, send an email to:
>        lpc2000-unsubscribe@yahoogroups.com
>       <mailto:lpc2000-unsubscribe@yahoogroups.com?subject=Unsubscribe>
>        
>     *  Your use of Yahoo! Groups is subject to the Yahoo! Terms of
>       Service <http://docs.yahoo.com/info/terms/>.
>
>
> ------------------------------------------------------------------------
>