INTERRUPT on RB5

[Bruce]

RBIF: RB Port Change Interrupt Flag bit
A mismatch condition will continue to set flag bit RBIF. Reading PORTB will end the mismatch condition and allow flag bit RBIF to be cleared.

With your LED on PORTB.1, that's exactly what you're doing with LOW LED. With your LED on PORTE, you're not performing a read-modify-write on RB, and the missmatch condition still exists.

Just read PORTB in your interrupt routine, then clear RBIF, then return. Assuming you have your PORTE A/D turned off, it should work fine.

The value read from PORTB in the interrupt handler will now be the new value that causes the interrupt once changed.

[Samuel]

What would ppl like me do without ppl like you!

[Samuel]

Assuming you have your PORTE A/D turned off, it should work fine.

How do i do that and how does it make a difference? Is it the ADCON register you are talking about?

[mister_e]

depending the PIC you're using it can be ADCON, ADCON0, ADCON1 refer to the datasheet.

How can it make difference... roughly, you're checking a digital signal, if your analog converter are not turned off, you can have some odd/erratic results. a close to be low level signal can be considered as a high level and so on for the close to be high or high level. digital is digital, analog is analog. It's a common problem like some others, let's say RA4 to drive a source on many PIC