Use a switch by change not on/off status.

[killdill045]

Set port status in start up code to " your safe off status" set interrupts off until pic is stable then enable interrupts. Whatever status toggle switch is in initally is irrelevant as changing it triggers the interrupt.

[peterdeco1]

Just a thought. I did something like this for a LDR to act as a motion detector. It should work for a switch.

checkswitch var bit
compare var bit
clear 'bits are 0
low portb.0 'output pin off

start:
let checkswitch = porta.0 'toggle switch
pause 50
let compare = porta.0
if compare <> checkswitch then toggle portb.0 : clear: goto start
goto start

[muddy0409]

I have used the following on a few occasions quite successfully:

Lets say the switch is on portc.3

SW VAR PORTC.3




WHILE SW = 0 : WEND 'THIS WILL CONTINUALLY LOOP AS LONG AS THE INPUT IS LOW, MAKE IT SW = 1 TO DETECT
'GOING LOW.
' ASSUMES THAT ALL YOU ARE DOING IS WAITING FOR A SWITCH CHANGE
'ACCORDING TO THE MANUAL THIS LOOP CHECKS ABOUT 50 TIMES A SECOND
'SO IT SHOULD SEE THE CHANGE WITHIN 1/50 OF A SECOND.

DO SOMETHING HERE 'THIS IS WHAT YOU WANT TO DO AT THE SWITCH CHANGE

[Archangel]

Ok, a JK FlipFlop is a 2 input one output device.
I am guessing you are using a latching relay which
changes states every time it is energised, is
this correct?

If so you need to read 2 pins to check switch state.

@ __config _INTRC_OSC_NOCLKOUT & _WDT_ON & _MCLRE_OFF & _CP_OFF
DEFINE OSC 4
TrisA = %00000011

TRISC = %00000000  
PortC = %00000000

ANSEL=0
ANSELH=0
ADCON0 = 0
ADCON1 = 0
Option_Reg = %00000000 ; enable RABPU
WPUA = %00000011  ;Set RABPU
Main:
If PortA.0 = 0 then 
portc.2 = 1
pause 500  ; 1/2 seconds of power out
portc.2 = 0
else
goto main
endif
goto Impatient  ; wait for microswitch to zero

Impatient:
while PortA.1 = 1
portc.3 = 1
pause 100
portc.3 = 0
pause 100
wend
if PortA.1 = 0 then goto main

end

Tested with 16F690 demo board. Weak pullups did not work, had to use real resistors, likely because the PICKit2 was still connected. LEDs were enabled to verify operation