LCDs are slow. I doubt if you will gain much from 8 bit mode
and extra pins tend to be useful. I wrote some simple
routines for putting strings or characters on the screen
without using any compiled library. You can find them here:
http://www.mikroe.com/forum/viewtopic.php?f=3D88&t=3D60600

Allen

> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-
> bounces@mit.edu] On Behalf Of Matt Rhys-Roberts
> Sent: Tuesday, March 17, 2015 8:09 AM
> To: Microcontroller discussion list - Public.
> Subject: [PIC] Interfacing a 2x16 LCD, using MPLAB-X and
XC8,
> on a PIC18F
>=20
> Hi, I'm right at the start of trying to drive a generic
ST7066U-
> based
> 2x16 LCD character display, compatible with
> HD44780/KS0066/KS0070B etc.
>=20
> Talking to the display can be done using 4 or 8 bits. I'm
using 8
> bits
> for now until I can prove any advantage to using 4. Pin
count
> costs,
> perhaps? Any opinions on this please?
>=20
> It seems logical to use the pre-written LCD library code
> provided by
> Microchip, rather than write my own, at this stage. So I
think I
> need to
> include xlcd.h, but then I'm not too clear about getting
the job
> done. I
> can see a number of .c files under
> /opt/microchip/xc8/v1.33/sources/pic18/plib/XLCD which I
> guess I'd call,
> and pass parameters accordingly.
>=20
> So my question is, has anyone seen a good user guide to
> setting all this
> up? I seem to have found the details before finding any
kind of
> manual.
>=20
> Many thanks,
> Matt.
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