Alan:

Mike's link doesn't work.
--=20
Larry Bradley =20
Orleans (Ottawa) Canada=20

On Mon, 2014-04-28 at 14:01 +0000, alan.b.pearce@stfc.ac.uk wrote:

> Ah, you want Mike Predko's 2-wire interface ...
>=20
> http://www.radanpro.com/Radan2400/mikrokontroleri/2-Wire%20PIC%20LCD%20In=
terface%20by%20Myke%20Predko.htm
>=20
>=20
>=20
> > An LCD display connected to a PIC requires a minimum of 6 port pins.
> > With small pin-count PICs, this can be a problem.
> >=20
> > Many years ago, when the Basic Stamp came out, some clever chap provide=
d
> > a serial LCD display - it used RS232 - to reduce the pin count (this wa=
s in the
> > days of the 16F84).
> >=20
> > I want to do the same thing but using SPI. (I just want it for myself -=
 I don't
> > plan on producing anything). I can always get a chip with SPI hardware =
to use
> > as the LCD driver, but I though I would try it with a couple of chips I=
 have on
> > hand, using software SPI.
> >=20
> > I've done SPI master in software - no problem. It seems to me that doin=
g the
> > slave shouldn't be difficult at all - it is really a very simple system=
.. I've search
> > the Internet to see if there are any software slave implementations out
> > there, but no luck. Rather than re-invent the wheel, do any of you know=
 of
> > any?
>=20
>=20
>=20
> --=20
> Scanned by iCritical.
>=20
--=20
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