gnupic: gpsim status
Subject:
Re: gpsim status
From:
Scott Dattalo ####@####.####
Date:
22 Aug 2000 11:13:22 -0000
Message-Id: <Pine.LNX.4.21.0008220607500.22065-100000@tempest2.blackhat.net>
On Tue, 22 Aug 2000, Erik Thiele wrote:
> On Mon, Aug 21, 2000 at 09:20:56PM -0500, Scott Dattalo wrote:
> >
> > In case you're wondering why it's been so quiet:
> >
> > http://www.dattalo.com/gnupic/t.gif
> >
> > But it ain't ready for prime time just yet.
>
> wow! that's cool!
>
> how does that device connect to the pic??
> i mean can i configure which pins of the device get connected to which
> pins on the pic? can i invert some of the pins?
>
> is it a typical default display?
It's totally generic - almost.
I've got the module hard coded for a 2X20 display and it doesn't support all of
the LCD commands (like scrolling). I wrote a script that attach nets between the
pic and the LCD module. The pic source code is something I wrote a while back
for a real LCD display. In fact, this version starts off in 8-bit mode and then
initializes the display to 4-bit mode.
And it works!
As far as interfacing is concerned, you can do just about whatever you want, I
suppose. The pic and LCD modules are totally unaware of one another. It's the
nodes that link them together. The LCD module is event driven (like gpsim) and
will respond to changes on the control and data lines. The events control a
state machine.
I'm going to be out of town for a few days (ISA show) so it won't be 'til this
weekend when I can work on it some more.
Scott
