RB0 interrupt and toggle issue

[mister_e]

Yesterday I tried my version and it seems to work properly here, the second addition above "should" cover what the OP need...

Fact is, when you're using push button and interrupts, things can sometimes pan-out in weird way due to the noise on the contact when you push/release them.

keys2: ; Called by Interrupt update relay

        pause 20 ' small debounce delay
        if !PORTB.0 then GetOut ' button up?
                                ' If so, getout of here... no need for noise call

is one way to avoid problem, even thought, it's not always the best way

[Macgman2000]

mister-e you are right on the money! I added PayLoad = PORTD and it works very well, it toggles the individual bits only and not reset the entire port. PortA.4 is not responding though....it stays low.

Thank you and everyone who helped. I think I will be using this new interrupt handler in the future.

Nick

[mister_e]

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PortA.4 is not responding though....it stays low

for PORTA.4... well... it's an open-collector output type on this one. So you may need to slightly modify your hardware and software.

http://www.picbasic.co.uk/forum/showthread.php?t=11116

In brief, connect your LED between Vdd and PORTA.4, and change those

PORTA = 0

to

PORTA = %00010000

That should work for LEDs. If you drive a transistor but then it's easier... not software modification are needed, just hardware.
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