Allen,
     I had tried it earlier and I took it out because it was being set=20
to 0. I just put it back in and it still doesn't work. No activitiy on=20
the PORTA or D lines. I'm completely lost. I don't know what else to do.
Thanks,
rich!

On 10/20/2015 10:59 AM, Allen Mulvey wrote:
> I haven't been following this too closely but I don't see
> ADCON0 set in there.
>
> This is what I use:
>        ADCON0 =3D 0;                              // adc off
>        ADCON1 =3D 7;                              // all
> digital
>        CMCON =3D 7;                               //
> Comparators off
>
> Allen
>
>> -----Original Message-----
>> From: piclist-bounces@mit.edu [mailto:piclist-
>> bounces@mit.edu] On Behalf Of Richard R. Pope
>> Sent: Tuesday, October 20, 2015 11:45 AM
>> To: Microcontroller discussion list - Public.
>> Subject: Re: SV: SV: SV: SV: [PIC]: Trying to get a
> 16F877A to
>> talk to an LCD!
>>
>> Jan-Erik,
>>       There is no activity on either PORTA or D. The blip
> that I see
>> is
>> probably just the pin burbbing on application of the
> power. I
>> know that
>> the chip is running because the OSC is running.
>>       Well I have reduced this to the absolute minimal
> code. Here
>> it is:
>>               #pragma config FOSC =3D HS, #pragma config WDTE
> =3D
>> OFF,
>> #pragma config PWRTE =3D OFF
>>               #pragma config BOREN =3D OFF, #pragma config
> LVP =3D
>> ON,
>> #pragma config CPD =3D OFF
>>               #pragma config WRT =3D OFF, #pragma config CP =3D
> OFF
>>               ADCON1 =3D 7;
>>               CMCON =3D 7;
>>
>>               PORTA =3D 0;
>>               PORTD =3D 0;
>>
>>               TRISA =3D 0;
>>               TRISD =3D 0;
>>
>>               en =3D 0;
>>               Init:
>>                   PORTA =3D 0;
>>                   PORTD =3D 0;
>>                   wait(5);
>>                   PORTA =3D 1;
>>                   NOP();
>>                   NOP();
>>                   NOP();
>>                   PORTD =3D 1;
>>                   NOP();
>>                   NOP();
>>                   NOP();
>>                   wait(5);
>>               goto Init;
>> It doesn't get much simpler than that. There is a 8MHz
> crystal
>> hooked up
>> to the OSC pins. It is running at 7.9997 MHz. The caps =3D
> 47pF.
>> As per
>> the data sheet the FOSC =3D HS. Almost everything else is
> turned
>> off. What
>> do you think? Any ideas from anybody?
>> Thanks,
>> rich!
>>
>>
--=20
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