I have a project using a PIC16F886. In my initialisation routine I set bit ADON = 0 
(in ADCON0) to turn the A/D converter off. According to the datasheet ADCON0 = 0 
on reset state anyway, but I have a funny feeling that I had problems with digital 
inputs until I did that (my memory not too accurate).

On 3 Jul 2007 at 9:00, Rikard Bosnjakovic wrote:

> Just for the record, the problem is now "solved".
> 
> For some reason, RA0-RA2 did not work as inputs. They interfaced bad
> with any output-port on the 16F887. I found this out by manually
> "hijacking" the datalines and cross coupled the (not) intended ports,
> and found that test #1-3 did not work under any circumstance when
> connected to RA0-2, but flawlessly when connected elsewhere. Tried to
> change the IC in case it was damaged, but I got the same weird
> behaviour on other chips as well.
> 
> So, I moved RA0-3 to RC1-3. Works as a charm, but I have no clue as to
> why RA0-2 didn't work as inputs, despite comparators/vrefs/analogs etc
> turned off.
> 
> 
> -- 
> - Rikard - http://bos.hack.org/cv/
> -- 
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-- 
Brent Brown, Electronic Design Solutions
16 English Street, St Andrews,
Hamilton 3200, New Zealand
Ph: +64 7 849 0069
Fax: +64 7 849 0071
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eMail:  brent.brown@clear.net.nz


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