This Forum is Dedicated For all The Object Oriented PIC Lovers .......... The concept behind OOPic is straight forward. Use preprogrammed multitasking Objects from a library of highly optimized Objects to do all the work of interacting with the hardware. Then write small scripts in Basic, C, or Java syntax styles to control the Objects. During operation, the Objects run continuously and simultaneously in the background while the scripts run in the foreground telling the objects what to do.

Monday, January 28, 2008

[oopic] Re: NC2004A LCD Screen with Modtronix LCD2S daughter board

--- In oopic@yahoogroups.com, "rtstofer" <rstofer@...> wrote:
>
> --- In oopic@yahoogroups.com, "jasuk1970" <mail@> wrote:
> >
> > Thanks for pointing out the obvious :)
> >
> > I looked at the I2C write example and it said 0x28 switches
> backlight
> > off (Figure 11), And it's actually 0x20!
> >
> > Wehoo it's working :)
> >
> > Well sort of, I think it's my programming skills lacking now :)
> >
> > Dim screen As oI2C
> > Dim text As New oBuffer(20)
> > Dim lp As Byte
> >
> > Sub Main()
> > screen.Node = 0x28 ' 0x50 divided by 2
> > screen.Mode = cv7Bit
> > screen = 0x20 ' Backlight On
> > Call CLS()
> > text.VString="Hello World! "
> > DisplayText()
> >
> > End Sub
> >
> > Sub DisplayText()
> > screen.Mode = cv7Bit
> > screen = 0x80 ' Send string
> > For lp = 0 To 19
> > text.Location = lp
> > screen = text.Value
> > Next lp
> > End Sub
> >
> > Sub CLS()
> > screen.Mode = cv7Bit
> > screen = 0x8c
> > End Sub
> >
> > Sub BackLightOff()
> > screen.Mode = cv7Bit
> > screen = 0x28
> > End Sub
> >
> > The screen clears but I cannot get any text to appear.
> >
> > I think it is I don't understand the IC2 stuff just yet.
> >
> > Thanks for any help.
> >
> > Cheers,
> >
> > Jas
> >
>
> Setting the mode is only required once.
> Why not try simple text without parsing?
> Parsing is unlikely to work in any event because you are not
sending
> a string. It will, at best, apply to the first character.
>
> I don't see a .string property for the oI2C object in the V6
> documentaton. It DID exist in V5.
>
> So, we could write things like:
> screen.string = "Hello World!"
>
> Unfortunately, V6 won't accept it!
>
> Richard
>

Thanks for the reply,

I've tried without the 0x80 and the same thing happens, the screen
switches off. (No flash of the first character like it did with the
previous one)

I've also tried using the .String = with OOPic 5, but this causes the
back light brightness to flicker and then the screen switches off
again.

Cheers,

Jas


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