Help! My 'interupt', erhm ...only interupts the one time?!!!

[HankMcSpank]

Many thanks Jerson

(btw I used your ISR - much easier on the eye & it works a treat!)


One other quick question (to the forum in general) - I have the need for two more external momentary push switches to interface with my program ...I'd also like to use interupts with these - what other input pins can I use? (I've now used the INT_INT pin ...which is an external interupt), but to my untrained eye, it's not easy to establish which other PIC pins would be good contenders.

I'm using a 16F690.

[Kamikaze47]

Many thanks Jerson

(btw I used your ISR - much easier on the eye & it works a treat!)


One other quick question (to the forum in general) - I have the need for two more external momentary push switches to interface with my program ...I'd also like to use interupts with these - what other input pins can I use? (I've now used the INT_INT pin ...which is an external interupt), but to my untrained eye, it's not easy to establish which other PIC pins would be good contenders.

I'm using a 16F690.

You could use the PORTB change interrupt which will trigger any time PORTB is changed, and have code in the interrupt handler that checks to see which pin(s) were pulled low (or high depending on if you are using pull up or pull down resistors).

Is it extremely time dependant that you need an interrupt? I almost never use interrupts for buttons because polling is generally just as good because of the fact that a human is pushing the button and therefore exact timing is out the window anyway.