> > >When interrupts are disabled, there won't be interrupt anymore, they won't >queue until you enable them again. Right? Am I missing something ? > >The IF flag will be set, even if GIE is not set. For GIE is not set, no >interrupt will be triggered.
As soon as GIE becomes set, and the corresponding IE (and possibly PEIE) for a set IF flag are also set, an interrupt is triggered. At least this is how I've always read the datasheets. So the interrupts are not literally queued, but latched. If one interrupt source would trigger two interrupts while GIE is unset, only one interrupt will result. Therefore, GIE should not be unset for too long, but copying a single variable of two or four bytes should never take longer than two interrupts of the same kind. The period in which GIE is unset should be kept as short as possible, of course. Greets, Kiste -- You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jallib?hl=en.
