Tim,

While the part is running ground the Mcr pin 4
If responded as reset then it means you disabled
RA5 input. This is part of configuration fuse that
You can enable or disable while programming it.
This is very smart thinking not every time needs external
Reset that is why I like Microchip they always think
About improvements and I can see it. Check datasheet page 175

Andre Abelian



-----Original Message-----

Hi Olin

In my main test code I have a routine that tests two inputs

start:
  delayms 10                            ' to prevent the R-M-W effect
  if porta.5 = 1 or porta.2 = 1 then
  high porta.0
  goto start
  endif
  low porta.0
  goto start

and it picks up the high level input on porta,2 but not porta,5 there is
defiantly something amiss here. I have a colleague that has tried his
own
code but gets the same result.

Has anybody ever used porta,5 on a 18F1320 and had it work?

Regards

Tim




-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Olin Lathrop
Sent: Tuesday, April 01, 2003 6:21 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC]:Porta,5 not working on 18F1320


> I have the OSC set as HS and it runs at 4 mhz

That should be no problem.  There have been some recent issues with the
PLL enabled.

> The basic code in the sim looks like this:-
>
>         Movlw 127
>         Movwf ADCON1
>
>         btfsc PORTA,5
>       goto  handle_high
>       goto  handle_low
>
>
> handle_high
>      goto $
>
> handle_low
>      goto $
>         END

This looks fine.  What is the symptom?  It would be useful to set
another
port pin high or low before the infinite loops so that you can see which
path it took when running on a real chip.


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