Hi,

Jinx wrote:
>Don't see why not. The data line will be static during the ISR (if it's
>a slow data stream that is) and there won't be any edges to miss.
>Just make sure you exit the ISR before the next edge is due

I don't see that so crucial ( given that there are enough time to actually
handle the data in time ). As long as the edge detect are setup correctly
for the *next* pulse then the isr flag will be set wether or not you
are inside the isr or not. Ofcource if an edge is detected while inside
the isr the retfie will just 'waste' 4 cycles to vector back to the
beginning of the
isr. Not recommeded, it however should still work a-ok.
The key point is to re-set the hi-lo or lo-hi a.s.a.p. then perform the rest
of
decoding. I think ?

/tony

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