Suggestions for ISR code... int_global or ??

bkamen · Posted: Fri Jul 31, 2009 1:42 pm

I have an application I'm writing where I have 4 identical devices on INT0 through INT3 on a PIC18F97J60.

For the proto - I kept them separate for other coding reasons, but now that I see I might be able get along with optimizing them.

Now, this means I could write 4 of the same ISR's that are prefaced with
#EXT_INT0 (,1,2,3)

But I'd like to avoid having the potential for 4 sets of code -- although they have some differences (basically addresses they access).

So I either write a routine that gets inserted 4 times using the #inline or I write a global ISR (not feeling so great about that).

I haven't considered if it can even be done to define a single ISR routine written as such: (literally)

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

This thread discusses your problem. See Ttelmah's response and
the orginal poster's decision:
http://www.ccsinfo.com/forum/viewtopic.php?t=36791

bkamen · Posted: Fri Jul 31, 2009 2:35 pm

That's definitely one way of doing it...

Right now I have a routine that's called with a parm by the 4 different IRQ's.

Anyone else?

-Ben

p.s. thanks PCM
p.p.s. the #INT_DEFAULT description in the CHM Help could be a LOT better worded.
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