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'LCD Driving Routine working on 16C63, but not 18F8'
2000\04\07@094756 by TOM THERON

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Hi everyone

I have a LCD (8 x 1 line) routine, that works fine with my PIC16C63-04. When
recompiling for the 16f876,  (remembering to switch off analog inputs on
port A), the routine does not function in the same target. Signals seem to
reach the display, but it does not respond.Anybody has a clue why this can
be?

Thanks
Tom Theron

2000\04\07@100022 by paulb

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TOM THERON wrote:

> I have a LCD (8 x 1 line) routine, that works fine with my
> PIC16C63-04.  When recompiling for the 16f876,  (remembering to switch
> off analog inputs on port A), the routine does not function in the
> same target.  Signals seem to reach the display, but it does not
> respond.  Anybody has a clue why this can be?

 You aren't by any chance using a faster crystal are you?
--
 Cheers,
       Paul B.

2000\04\07@110545 by M. Adam Davis

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If the correct signals are reaching the display, then it has to be a display
issue.  I suspect the issue is with the micro, not the display.  Try making the
simplest routine you can to use the display, and if it still doesn't work, post
it here.  Someone will probably be able to pic the problem out for you.

-Adam

TOM THERON wrote:
{Quote hidden}

2000\04\07@113710 by Andrew Kunz

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This isn't LVP again, is it?

Andy










"M. Adam Davis" <spam_OUTadavisTakeThisOuTspamUBASICS.COM> on 04/07/2000 11:04:34 AM

Please respond to pic microcontroller discussion list <.....PICLISTKILLspamspam@spam@MITVMA.MIT.EDU>








To:      PICLISTspamKILLspamMITVMA.MIT.EDU

cc:      (bcc: Andrew Kunz/TDI_NOTES)



Subject: Re: LCD Driving Routine working on 16C63, but not
         18F876








If the correct signals are reaching the display, then it has to be a display
issue.  I suspect the issue is with the micro, not the display.  Try making the
simplest routine you can to use the display, and if it still doesn't work, post
it here.  Someone will probably be able to pic the problem out for you.

-Adam

TOM THERON wrote:
{Quote hidden}

2000\04\07@164714 by Mike Mansheim

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Tom Theron wrote:

>I have a LCD (8 x 1 line) routine, that works fine with my PIC16C63-04.
When
>recompiling for the 16f876,  (remembering to switch off analog inputs on
>port A), the routine does not function in the same target. Signals seem to
>reach the display, but it does not respond.Anybody has a clue why this can
>be?

This is getting to be a standard response whenever someone has trouble
moving code to one of the new flash chips!  If RB3 is part of your design,
make sure LVP is disabled in the configuration bits, or else RB3 will NOT
be available as an i/o.

2000\04\08@083034 by TOM THERON

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> I have a LCD (8 x 1 line) routine, that works fine with my
> PIC16C63-04.  When recompiling for the 16f876,  (remembering to switch
> off analog inputs on port A), the routine does not function in the
> same target.  Signals seem to reach the display, but it does not
> respond.  Anybody has a clue why this can be?

 You aren't by any chance using a faster crystal are you?

Nope - same target board
--
Tom

2000\04\10@024752 by TOM THERON

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This isn't LVP again, is it?

Andy


No, I made sure about that.

Tom

2000\04\10@113215 by Michael Killeen

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HELLO

If you are using Port A as digital i/o then the ADCON1 is setup different
for a OPT part compared to a FLASH part ( took me days to get this one !)

Michael

{Original Message removed}

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