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Vectored Interrupts

 
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BrianF



Joined: 12 Dec 2020
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Vectored Interrupts
PostPosted: Thu Apr 28, 2022 4:43 am     Reply with quote

Newer chips like the 18FxxQ43 have a Vectored Interrupt Controller.

Does CCS uses this, in preference to the legacy scheme, where it is available?

I can't see anything in the manual which mentions the VIC.
temtronic



Joined: 01 Jul 2010
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Location: Greensville,Ontario

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PostPosted: Thu Apr 28, 2022 5:11 am     Reply with quote

Too new for this dinosaur, but Microchip's TB3162 is where you should start. Explains and show examples on how to implement it.
The big benefit should be faster response to the actual event ---> to the ISR.
BrianF



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PostPosted: Thu Apr 28, 2022 6:17 am     Reply with quote

I was wondering if it was connected to the '#INT_xxx' directive at all.
BrianF



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PostPosted: Thu Apr 28, 2022 6:43 am     Reply with quote

Found it...

#device VECTOR_INTS
temtronic



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PostPosted: Thu Apr 28, 2022 6:48 am     Reply with quote

GREAT !!!
now, it'd be interesting to see a small program use it vs regular INTs to compare code size and speed......

It 'should' be faster and I doubt program size won't be an issue.

Jay
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