Jump out of interrupt service subroutine

[viscomjim]

Is it possible to jump to a different location in a program from the interrupt service routine? This is what I want to do...

Dir SWITCH In
SET IOCAN3 ON 'Waiting for negative going edge
ON Interrupt PORTBCHANGE CALL ChangeMode

Main:
nop
goto Main

SubRoutine1
do stuff
end sub

SubRoutine2
do stuff
end sub

end

TestLabel1:
do stuff
goto TestLabel1

TestLabel2:
do stuff
goto TestLabel2

SUB ChangeMode
Set IOCAF3 OFF
Mode += 1
If Mode = 5 Then Mode = 1
Select Case Mode
Case 1
SubRoutine1
Case 2
SubRoutine2
Case 3
goto TestLabel1
Case 4
goto TestLabel2
end Select
END SUB

Latest GCB build. Using a 16f1825 that can have interrupt on neg. edge.

[Chris Roper]

Personaly I would use the interupt routeen to set a flag and have the Select Case Construct in the Main Loop.

Jumping out of an interupt could leav context info on the stack which will eventualy overflow and crash.

Cheers
Chris

[viscomjim]

Excellent point Chris. Thanks!