Multiple IRQ'S ?
KŸbek Tony email (remove spam text)
>If the interrupt signal is likely to be too short to be able to poll in
>ISR, then maybe you could use something like an SR flip flop for each
>The incomming interrupt would set the output of the flip flop which can
>diode OR'ed to the int pin. The ISR would have the responsibility of
>clearing each flip flop after servicing its interrupt. With a bit of
Yes that was my idea.
>cunning (and a resistor or two) you could use the same PIC pin to read
>reset the flip flop.
Hmm this got me stumbled, how ? cant figure out a circuit that would
using the same pin as input/reset.
Would You care to elaborate ?
Tony KŸbek, Flintab AB
See also: www.piclist.com/techref/microchip/devices.htm?key=pic
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