12f509 and DS18B20

[robertg]

Yep correct.

And sorry for wasting your time, I've got everthing I need working on a 18F45K20 now.
Putting aside the extra legs to solder, for the extra $3 for this micro. makes sense to work with the 18f as I now have heaps of program space and no restriction on I/O pins etc.... plus it works!

ciao and thanks anyway!

Rob.

[tumbleweed]

...testing the code on a PIC18F45K20 and sensor works fine on PORTC or PORTD but can't seem to get any readings when configured using ports eithe port A, B or E

That's probably because many pins on ports A, B, and E are also analog pins so the digital input buffer is disabled by default.
See the ANSEL/ANSELH registers

[robertg]

Thanks Tubleweed!

After your comment on the ANSEL/h after searching the datasheet on those registered, yep found that information buried in the doc.
Haven't touched a PIC micro in years, I'm going through the relearning experience. You do forget how powerful and complex these devices are.


Rob.