Can I have interupts on any pin ?

[Bonxy]

Just an afterthought,
do all pic micro ports/pins have internal pull up resistors ?, i've been looking at the 18f4550 datasheet but cant tell ?, maybe i'm just stupid or tired lol :-)'

Thanks

[aratti]

No, internal pullups applys only to portB.

Al.

[sayzer]

No, internal pullups applys only to portB.

Al.

Some other PICs have pull-ups on PORTA, too. I was not aware of this fact until recently.
Edit: For example, 16F630.

.... (and 2 pins could fire at the same time....

What does it matter?
If one or the other interrupts, you will get into interrupt routine anyway whether two interrupts occur at the same time or not (which I think is very close to impossible !)

While you are in interrupt routine, check the status of all pins, then act based on each of their tasks.

Something like >

RB0_Int: 'we are now in interrupt routine.
A = 0
B = 0
C = 0
D = 0
..
....
.......
IF Pin1 = 0 THEN A = 1 ' Pin1 seems to be interrupted.
IF Pin2 = 0 THEN B = 3  'Ohh, Pin2 also seems to interrupted.
....
.......

[PMController]

I Found great tutorial USING THE PIC EXTERNAL INTERRUPT on all pin

www.precision.net.in/picbasic/PIC_INT.PDF

.

[Acetronics2]

Hi, PMC

Looks your site is down ...

Could you check the link ???

Alain

[PMController]

Its not my site. but working for me.

[Acetronics2]

The message is :

" Internet explorer can't display the page "

no connectivity problems to others sites ...

Alain