lcd4linux-users

[lcd4linux] Problems with T6963C

[Juergen D. <li...@ka...>]

Hi,

I have a LCD display "EA W240-7KHLW"[1] with a T6963C controller.
The display size is 240x128 pixels. I'm using lcd4linux-cvs with
this config:

,----
| ....
| Display T6963-240x128 {
|   Driver 'T6963'
| 	Port '/dev/parports/0'
| 	Size '240x128'
| 	Font '6x8'
| 	Wire.WR 'STROBE'
| 	Wire.RD 'SELECT'
| 	Wire.CE 'AUTOFD'
| 	Wire.CD 'INIT'
| }
| ....
`----

My probleme is, that only the upper half is working properly; the
lower half can also be used but there is something like a snow shower.
If I put some text to this area the snow is gone. Does somebody have
the same problem?=20

Another question is, if it is planed to support larger fonts? For my
display i think a 8x16 font would be better to read from far away.

[1] Datasheets:=20
    display: http://www.lcd-module.de/deu/pdf/grafik/w240-7.pdf
	controller: http://www.lcd-module.de/eng/pdf/zubehoer/t6963.pdf

PS: Sorry for my bad english ;)

Thank you for help
--=20
/j<r>d

Beware of a dark-haired man with a loud tie.

Re: [lcd4linux] Problems with T6963C

[Michael R. <re...@eu...>]

Hi Juergen,

> My probleme is, that only the upper half is working properly; the
> lower half can also be used but there is something like a snow shower.
> If I put some text to this area the snow is gone. Does somebody have
> the same problem? 
Will the text in the lower half be displayed correctly?

Looking into the code of drv_T6963.c, looks like the internal memory 
layout is deivided into upper and lower half, having two different 
memory starting addresses. But this has never been coded out, because I 
don't have such a nice display :-(

If you want to be my tester, I'll try to integrate this code...

> Another question is, if it is planed to support larger fonts? For my
> display i think a 8x16 font would be better to read from far away.
Feel free to provide a font file for 8x16, and I'll integrate it into 
lcd4linux. It should look similar to the font-6x8.h


bye, michael

-- 
Michael Reinelt <re...@eu...>
http://members.eunet.at/reinelt
GPG-Key 0xDF13BA50
ICQ #288386781

Re: [lcd4linux] Problems with T6963C

[Michael R. <re...@eu...>]

Hi Juergen,

>>Will the text in the lower half be displayed correctly?
> 
> Yes, it will, graphics also too. I have also tested the display with
> the graphlcd-plugin from the Linux-VDR project and it works
> correctly. So i think, the wireing and so is ok :)
Yes, I think so, too.
But my question was: Is the lower half handled correctly by lcd4linux? I 
doubt so...

>>Looking into the code of drv_T6963.c, looks like the internal memory 
>>layout is deivided into upper and lower half, having two different 
>>memory starting addresses. But this has never been coded out, because I 
>>don't have such a nice display :-(
>>
>>If you want to be my tester, I'll try to integrate this code...
> 
> Fine, of course. I can give you an shell account on a workstation of
> me, where i can connect the lcd if you need. Else say what you need
> :-)
No, I need someone who as "optical" access to the display :-)

I just changed the code in CVS. Could you please check out and try? 
(Maybe you have to wait a few hours until the anonymous CVS is in sync 
again)


bye, Michael

-- 
Michael Reinelt <re...@eu...>
http://members.eunet.at/reinelt
GPG-Key 0xDF13BA50
ICQ #288386781

Re: [lcd4linux] Problems with T6963C

[Juergen D. <li...@ka...>]

Hi Michael,

* On Wed, 22 Dec 2004 at 14:39 +0100, Michael Reinelt wrote:
> >>Will the text in the lower half be displayed correctly?
> >
> >Yes, it will, graphics also too. I have also tested the display with
> >the graphlcd-plugin from the Linux-VDR project and it works
> >correctly. So i think, the wireing and so is ok :)
> Yes, I think so, too.
> But my question was: Is the lower half handled correctly by lcd4linux? I=
=20
> doubt so...

Oh, ok .. now i unterstand what you mean :)=20
Yes, the lower half is handled correctly -> when i put some text
there, the snow is gone on the pixels where the characters are.=20

[...]
> I just changed the code in CVS. Could you please check out and try?=20
> (Maybe you have to wait a few hours until the anonymous CVS is in sync=20
> again)

I've checked out the source but nothing changes. Do you need some
debug output or anything else?=20

Thanks, Happy Christmas=20
--=20
/j<r>d

You have an unusual magnetic personality.  Don't walk too close to
metal objects which are not fastened down.

Re: [lcd4linux] Problems with T6963C

[Michael R. <re...@eu...>]

Hi Juergen,

>>But my question was: Is the lower half handled correctly by lcd4linux? I 
>>doubt so...
> 
> Yes, the lower half is handled correctly -> when i put some text
> there, the snow is gone on the pixels where the characters are. 
Strange. Very strange. Rows > 63 should not work with the old code.

>>I just changed the code in CVS. Could you please check out and try? 
>>(Maybe you have to wait a few hours until the anonymous CVS is in sync 
>>again)
> 
> I've checked out the source but nothing changes. Do you need some
> debug output or anything else? 

There's been a change to drv_T6963.c. Please double-check if you have 
revision 1.13 of this file...


bye, Michael

-- 
Michael Reinelt <re...@eu...>
http://members.eunet.at/reinelt
GPG-Key 0xDF13BA50
ICQ #288386781