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

I've modified the DisplayText routine to use the other method you
mentioned, And now I get a flash of a character, then the screen
switches off until the power re-cycled.

Sub DisplayText()
screen.Mode = cv10Bit
screen.Location = 0x80 ' Send string
For lp = 0 To 19
text.Location = lp
screen = text.Value
Next lp
End Sub

All single byte instructions seem to work ok, I just cannot seem to
send a string of characters to the LCD module.

Can anyone see any obvious mistake ;-)

Cheers,

Jas

--- 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
> --- In oopic@yahoogroups.com, ooPIC Tech Support <dennis.clark@>
> wrote:
> >
> > What should happen? The 0x28 command just turns the screen on.
> Send
> > some text to it and see what happens. Carefully read through the
> > commands set and experiment. you should get something to go as
> long as
> > you put in the pull up resistor on the SDA line as we said
earlier
> in
> > this thread.
> >
> > DLC
> >

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