[oopic] Re: Using pins 1-4 as digital (OOPic-R)

--- In oopic@yahoogroups.com, zachwlewis <zwlewis21@...> wrote:
>
>
> I've been having some problems when using pins 1-4 on the OOPic as
digital input/output pins. I've tried using them for servos (output)
and send-recieve sensors (input), but I can't figure out how to set
them to digital. I read that they had the A2D converter stuff hooked
up on them, and I think it is interfering with the operation of the
program. Any ideas?
>

Yes, don't do that. This is a common problem. Reserve iolines 1-7 for
A/D, and use the others for digital I/O.

This is an issue that goes back to how the underlying PIC16F877 chip
allocates those pins. You cannot willy-nilly use them for DIO and AIO
in any combination. There is a specific ordering. Eg, if you use
ioline 1 for digital, then you can't use any of the others for analog,
etc. It's easiest to avoid the problem in the first place by not using
them for digital.

- dan michaels
www.oricomtech.com
--- OOBOT40 Boards ---
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