AVR-Chat

Yes, the data sheet IS hard to find.  Thanks for the source.

I eventually figured out what I was doing wrong.  I had 2 versions 
of the include file and I modified the wrong one with the new pin 
assignments for the LCD!!!!  DUMB DUMB.  But it was right there in 
the PN window.  But it was bot the one make was using!

So obvious but so hard to see!

-Tony

--- In AVR-Chat@yahoogroups.com, Zack Widup <w9sz@p...> wrote:
> 
> Hi Tony,
> 
> Besides all the other good advice you've already gotten (the one 
jerk 
> notwithstanding) you might want to study the manual for the 
HD44780.  I 
> believe that's the chip used in the Optrex LCD's.
> 
> The data sheet for the 44780 is a bit hard to come by but I have 
it on my 
> website at http://www.qsl.net/w9sz/files/PDFs.
> 
> I hope that helps.
> 
> Zack
> 
> On Sat, 23 Apr 2005, arhodes19044 wrote:
> 
> > 
> > Well, maybe one member is not so helpful.   Maybe does not really
> > need to be here any more.....
> > 
> > -Tony
> > 
> > --- In AVR-Chat@yahoogroups.com, Jørn Tore Ørsland
> > <jorntoreorsland@t...> wrote:
> > > fuck you!!!!!!!!! DONT ASK SUTSH A STUPID
> > > QUESTIN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> > > ----- Original Message -----
> > > From: "arhodes19044" <spamiam@c...>
> > > To: <AVR-Chat@yahoogroups.com>
> > > Sent: Saturday, April 23, 2005 2:50 AM
> > > Subject: [AVR-Chat] New LCD will not work.
> > >
> > >
> > > >
> > > >
> > > > Wow, the members here are SO helpful.  Especially being 
patient
> > with a
> > > > newbie like me.
> > > >
> > > > Well, the next problem is getting my LCD working.  It is a 
brand
> > new
> > > > optrex dmc-61230.  I have it hooked up for 4 bit parallel.
> > > >
> > > > I have it all wired up and all the wires are going to where I
> > think
> > > > they should, but it is not working.   I have triple checked 
the
> > wires
> > > > while looking at the datasheet for the LCD.  Power wires are
> > right.
> > > > The 4 active data pins (DB4 thru DB7) are hooked to the pins 
I
> > have
> > > > assigned to bits 0-4.  RS, RW, E are hooked up aproperly as 
far
> > as I
> > > > can tell.  But I get nothing.
> > > >
> > > > When you power up an LCD should it do anything visible 
without
> > any
> > > > connection other than power (+,-) and the "LCD drive" which 
is
> > > > supposed to be in the neighborhood of 1/2 VDD?
> > > >
> > > > I am getting nothing.  The backlight does come on....
> > > >
> > > > No lettering or anything.  As far as I can tell, the test 
program
> > > > looks like it is running properly, but I am not positive.
> > > >
> > > > I am devoid of further ideas....
> > > >
> > > > -Tony
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Yahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > 
> > 
> > 
> > 
> > 
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