lcd4linux-users — lcd4linux users

Re: [lcd4linux] Re: new Driver

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

Hi Theo,

> here is an picture from my Display using lcd4linux and libluise, not all
> widget are configured at this moment

Well, now that looks *really* cool!

Maybe you can try to get a less blurred image and upload it to the "cool
stuff" section of the lcd4linux wiki?


How do you get these graphic effects? Do the come from libluise, or from
your driver?

If it's from your driver, we have to find a way to implement'em in the
generic graphic driver, so that all graphic displays would benefit...


bye, Michael

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

[lcd4linux] Re: new Driver

[Theo S. <to...@sc...>]

Hi again,

here is an picture from my Display using lcd4linux and libluise, not all
widget are configured at this moment

www.schneider-berlin.net/theo/lcd.jpg

mfg
Theo

[lcd4linux] new lcd4linux driver / problem with last CVS checkout

[Theo S. <to...@sc...>]

Hi,

i write drv_LUIse.c for the USB LCD from www.wallbraun-electonics.de
using his libluise. But now i dont know how do i check if libluise and
luise.h are installed?

I use an CVS checkout from last week and all work fine.

Today i checkout lcd4linux again and now i cant compile my driver, error
Message is :

o plugin_sample.o plugin_seti.o plugin_statfs.o plugin_uname.o
plugin_uptime.o plugin_wireless.o plugin_xmms.o  -L/usr/local/lib
-lluise  -lm
widget_icon.o: In function `widget_icon_init':
widget_icon.c:(.text+0x217): undefined reference to `YRES'
widget_icon.c:(.text+0x36b): undefined reference to `YRES'
drv_LUIse.o: In function `drv_LUIse_blit':
drv_LUIse.c:(.text+0x1f): undefined reference to `LCOLS'
drv_LUIse.c:(.text+0x26): undefined reference to `drv_generic_graphic_FB'
drv_LUIse.o: In function `drv_LUIse_quit':
drv_LUIse.c:(.text+0x1cd): undefined reference to `drv_generic_graphic_qu=
it'
drv_LUIse.c:(.text+0x205): undefined reference to
`drv_generic_graphic_greet'
drv_LUIse.o: In function `drv_LUIse_init':
drv_LUIse.c:(.text+0x5ec): undefined reference to `DROWS'
drv_LUIse.c:(.text+0x5f9): undefined reference to `DCOLS'
drv_LUIse.c:(.text+0x608): undefined reference to `DROWS'
drv_LUIse.c:(.text+0x615): undefined reference to `DCOLS'
drv_LUIse.c:(.text+0x641): undefined reference to `XRES'
drv_LUIse.c:(.text+0x648): undefined reference to `YRES'
drv_LUIse.c:(.text+0x78d): undefined reference to `drv_generic_graphic_in=
it'
drv_LUIse.c:(.text+0x7da): undefined reference to `drv_generic_graphic_dr=
aw'
drv_LUIse.c:(.text+0x81b): undefined reference to
`drv_generic_graphic_icon_draw'
drv_LUIse.c:(.text+0x85c): undefined reference to
`drv_generic_graphic_bar_draw'
drv_LUIse.c:(.text+0x9c7): undefined reference to `DROWS'
drv_LUIse.c:(.text+0x9ec): undefined reference to `DCOLS'
drv_LUIse.c:(.text+0xa00): undefined reference to
`drv_generic_graphic_greet'
drv_LUIse.c:(.text+0xa17): undefined reference to
`drv_generic_graphic_clear'
collect2: ld gab 1 als Ende-Status zur=FCck
make[1]: *** [lcd4linux] Fehler 1
make[1]: Leaving directory `/home/tooly/lcd/lcd4linux-cvs_20051218'
make: *** [all] Fehler 2
tooly@schneider-berlin:~/lcd/lcd4linux-cvs_20051218$

mfg
Theo

Re: [lcd4linux] Detecting if an LCD is available

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

Hi Norbert,

> If I start lcd4linux on a machine without an LCD display, I'm getting
> lots of these messages:
> 
> Nov 29 12:05:18 foo LCD4Linux[16306]: HD44780: timeout waiting for busy flag on controller 1 (85)

These should disappear after a while, with a message reading
"deactivating busy-flag checking" or so.

> That's why I'm searching a way to detect if an LCD is available or
> not, so I can prevent starting lcd4linux on machines without an LCD.
I'm afraid there is no *reliable* way to detect if a display is
connected to the parallel port.


bye, Michael

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

[lcd4linux] Detecting if an LCD is available

[Norbert T. <tre...@te...>]

Hi,

If I start lcd4linux on a machine without an LCD display, I'm getting
lots of these messages:

Nov 29 12:05:18 foo LCD4Linux[16306]: HD44780: timeout waiting for busy flag on controller 1 (85)

That's why I'm searching a way to detect if an LCD is available or
not, so I can prevent starting lcd4linux on machines without an LCD.

Thanks, Norbert

-- 
Norbert Tretkowski                           Mail: nt...@te...
Systems Engineer                            Phone: +49 (911) 30999-0
Team(ix) GmbH                                 Fax: +49 (911) 30999-99
Sued-West-Park 35, 90449 Nuremberg, Germany   GPG: 0x69C971E0

Re: [lcd4linux] Driver manual

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

Hi Theo,

>  Hi Michael, Hi Martin,
I'm afraid Martin did not read your mail :-( because you sent it to me
only. Please make sure that your mails go to
lcd...@li...

> The lcd = http://tilofranz.net/lcdshop/index.html
> from: http://wallbraun-electronics.de
Look cool! But it's quite expensive, isn't it?

> M. Wallbraun send me an beta linux lib to test the lcd. The lib work
> fine, but now i will test it with lcd4linux.
> 
> I read some sources from lcd4linux, but dont know how i tell lcd4linux
> that there is an new driver.

I'm pretty sure it will be a new driver. If you can send me a data sheet
and/or the lib from Mr. Wallbraun, I can help you with starting the
driver...

bye, Michael

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

[lcd4linux] Re: icons size limitation ?

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

Hi Szymon,

> What about dropping the limitation of icons size ? All bars and defined 
> chars are limited in dimensions to:
> 
> /* icons always are 8 pixels high  */
> #define YRES 8

I tried to fix this in CVS. I'm not shure if this works... could you
please test the code? (I dont't have a display with YRES other than 8)

The fix was *that* easy: I just removed the above #define, and added a
'extern int YRES'...

bye, Michael

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

[lcd4linux] re-use of icons

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

Jesus de Santos Garcia schrieb:
> I cannot use icons in the second Row. For example, using the same
> icon in the row1 and row2 give me this error:

There's been an issue with using one icon twice. The second (identically
icon) did require its own user-defined char, which failed if you have
reserved only one char for icons.

I modified the code so that icon widgets re-use their 'parent' if it's
the same widget.

Just checked into CVS. Please Test!


bye, Michael

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

Re: [lcd4linux] How to write a new driver

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

Hi there,

> i will write an driver for my lcd. So i read README.Drivers. At line 10,
> i read: use Skeleton.c, but cant find Skeleton.c? Also on line 39, "edit
> display.c"?
> 
> Is there any newer readme, or where are this files?

Ok guys, I just added a new 'drv_Sample.c' to the CVS repository (same
as 'plugin_sample') and added two new pages to the Wiki:

https://ssl.bulix.org/projects/lcd4linux/wiki/driver_howto
https://ssl.bulix.org/projects/lcd4linux/wiki/plugin_howto

I hope this is a good starting point for developers new to lcd4linux.
Comments are welcome. Additions/Corrections in the wiki are even more
welcome :-)


bye, Michael

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

Re: [lcd4linux] Driver manual

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

Hi Theo,

> i will write an driver for my lcd.
Great!

> So i read README.Drivers. At line 10,
> i read: use Skeleton.c, but cant find Skeleton.c? Also on line 39, "edit
> display.c"?

Oh... looks like this README is *really* old :-)

I can think of two solutions:

- get README.Drivers up to date
- remove README.Drivers

I vote for the second one :-)


I'm afraid there is no current readme. But I can help you. Writing a new
driver should be quite easy, but adopting all the autoconf stuff is a
bit tricky...

First of all, you should use the CVS version. Otherwise it will be very
hard for me to adopt your changes. If you need help with CVS, let me know.

What kind of display is it? Have you got a data sheet? This way I can
tell you which existing driver is most similar, and you could use it as
a starting point (HD44780, as Martin suggested, is probably the most
complex driver available, so it may be a bad idea to use it asa basis
for a new driver)

I could prepare the framework (including all the autoconf stuff) for you.


bye, Michael

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

Re: [lcd4linux] Driver manual

[Martin H. <ma...@he...>]

Hi Theo,

> i will write an driver for my lcd. So i read README.Drivers. At line 10,
> i read: use Skeleton.c, but cant find Skeleton.c? Also on line 39, "edit
> display.c"?
> 
> Is there any newer readme, or where are this files?
the README.drivers file is hopelessly out of date, and I'm afraid
there's not much up to date information available on writing a driver at
the moment.
https://sourceforge.net/mailarchive/forum.php?thread_id=8214647&forum_id=37243
should give you a place to start (depending on the driver - this one
talks about serial displays, if yours is connected via parallel port or
something else, you'll obviously have to take a look at other drivers,
like the HD44780 driver, for example).

I hope that helps.

Martin

[lcd4linux] Driver manual

[Theo S. <to...@sc...>]

Hi there,

i will write an driver for my lcd. So i read README.Drivers. At line 10,
i read: use Skeleton.c, but cant find Skeleton.c? Also on line 39, "edit
display.c"?

Is there any newer readme, or where are this files?

mfg
Theo

(Sorry for my bad english)

[lcd4linux] Re: icons size limitation ?

[Szymon B. <sbi...@wp...>]

Hello Michael

I would like to congratulate you becoming a father. By the way, there was=
 =20
a recently a lot of young fathers among my friends ..... hmmmm wonder why=
 =20
;)

Just take your time, I won't rush. I was just curious about that =20
limitation.
I would be glad to participate in testing. The same with i2c wrapper - I =
=20
have finished my i2c bus, and would like to build pcf8574 glue-logic to =20
connect hitachi display (4x20 with backlight) - would be nice to put on =20
the desk.

With kind regards
Szymon
--=20
----                                 ----
Szymon Bieganski, PhD candidate
TU/e EE dept ICS group, (+31) 40 247 3394
----                                 ----

[lcd4linux] Re: icons size limitation ?

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

Hi Szymon,

sorry for the long delay and for not answering your previous mails. As
you may have noticed, I became father some weeks ago. And now my son and
my real-life job takes up to 27 hours a day :-)

> What about dropping the limitation of icons size ? All bars and defined 
> chars are limited in dimensions to:
> 
> /* icons always are 8 pixels high  */
> #define YRES 8
> 
> ... or am I using outdated code ?

No, as long as you're using CVS, you should be up to date.

I will remove this limitation. I would do it immediately, but as there's
a new driver in process, the code isn't usable yet (it does not
compile), so I cannot commit the changes at the moment.

I hope i will finish it today. I'll let you know, and I'll appreciate if
you could do some tests on it.

Thanks, Michael

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

[lcd4linux] icons size limitation ?

[Szymon B. <sbi...@wp...>]

Hello Michael,

What about dropping the limitation of icons size ? All bars and defined =20
chars are limited in dimensions to:

/* icons always are 8 pixels high  */
#define YRES 8

... or am I using outdated code ?

With kind regards
Szymon
--=20
----                                 ----
Szymon Bieganski, PhD candidate
TU/e EE dept ICS group, (+31) 40 247 3394
----                                 ----

RE: [lcd4linux] Re: [Lcd4linux-devel] Hello, what is the status o f Crystalfontz 635 support?

[Luis.F.Correia <Lui...@se...>]

Hi Michael,

> -----Original Message-----
> From: Michael Reinelt [mailto:re...@eu...] 
> SOme of the addons (LED's, fan control and so on) should be 
> supported by the driver, too, although there's no support for 
> GPO's and keypads within the lcd4linux architecture at the moment.
 
Talking about keypads and related stuff, are you planning to support
them in a near future?

I'm kind of waiting for that to make the final hardware design on my
I2C lcd display. Plans are made but they will depend on the actual
lcd4linux software implementation.

> 
> bye, Michael

I hope your newborn is not giving you the griefs :P


Luis Correia

[lcd4linux] Re: [Lcd4linux-devel] Hello, what is the status of Crystalfontz 635 support?

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

Hi Andy,

> Hi, i have one of these...wondering if there's a way to run it for basic
> display functions....it also has a 6 button keypad, 4 multicolor leds &
> the SCAB fan/temp control board.

The 635 should be supported with latest CVS versions of lcd4linux (If
you need help with CVS, have a look at the wiki, or feel free to ask me)

SOme of the addons (LED's, fan control and so on) should be supported by
the driver, too, although there's no support for GPO's and keypads
within the lcd4linux architecture at the moment.


bye, Michael

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

Re: [lcd4linux] (OT) LCD terminal on Linksys NSLU2

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

Hi Phil,

>     http://chezphil.org/slugterm/

Thanks for the link. Looks cool! Very nice pictures!

I've added your page to the "Links" section of the LCD4Linux Wiki.

bye, Michael

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

Re: [lcd4linux] Display for a router

[<sp...@fr...>]

Hi,

thanks for the link, this seems to be a good option.
I am sure I can get a good solution by using this switch and displaying som=
e messages from the shut down scripts on my lcd.

Have Fun,
FReAK

>There's a Linuxfocus article about a Shutdown-Led:
>http://linuxfocus.org/English/January2001/article186.shtml
>Or get a PC with ATX Power, which shuts itself down.
>However you could re-write the lcd4linux code where the 'Goodbye' message =
 is displayed, when the program is stopped.
>Greetings, Stefan =0A=0A=0A=0A"Jetzt Handykosten senken mit klarmobil - 18=
 Ct./Min.! Hier klicken"=0Awww.klarmobil.de/index.html?pid=3D73025=0A

Re: [lcd4linux] Display for a router

[Ognjen B. <og...@ma...>]

Stefan Bachmaier wrote:

> On Sat, 22 Oct 2005 12:59:01 +0200, <sp...@fr...> wrote:
>
>> Hi,
>>
>> I am using an old PC as router for my home network.
>> At the moment it is standing beside my desktop pc and I have a 
>> monitor  attached to it.
>>
>> Now I wanted to place the router some where elses and I also wanted 
>> to  remove the monitor from it.
>>
>> I thought a small LCD display would be great to display the status 
>> of  the box.
>>
>> Now my question is:
>>
>> Is it possible to display the "power off" message on a LCD? Or at 
>> what  stage of the shut down is the driver unloaded, so that no 
>> further  display is possible?
>>
>> I would like to have a message on the LCD when it is safe to power 
>> off  the router, without destroying my installation.
>>
>> Thanks for reading,
>> FReAK
>
>
> There's a Linuxfocus article about a Shutdown-Led:
>
> http://linuxfocus.org/English/January2001/article186.shtml
>
> Or get a PC with ATX Power, which shuts itself down.
>
> However you could re-write the lcd4linux code where the 'Goodbye' 
> message  is displayed, when the program is stopped.
>
> Greetings, Stefan
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by:
> Power Architecture Resource Center: Free content, downloads, discussions,
> and more. http://solutions.newsforge.com/ibmarch.tmpl
> _______________________________________________
> Lcd4linux-users mailing list
> Lcd...@li...
> https://lists.sourceforge.net/lists/listinfo/lcd4linux-users
>
Another idea is the use the HD44780 kernel driver, this will let to 
write to the LCD display using the echo command (i.e. echo "Sutdown 
complete" > /dev/lcd).

As its a kernel rather then a userspace program it does not get unloaded 
(particulary if you do not compile it as a module) meaning that you can 
write to the LCD at any point in the shutdown stage.
 From hereon you just modify your init shutdown script to echo whatever 
you want at which ever point (so you could have "Shutting down", "Stage 
1 complete","Stage 2 complete"....etc... "Shutdown complete").

You can also  use this is bootup to check if your interfaces came up etc...

Re: [lcd4linux] Display for a router

[Stefan B. <st...@tr...>]

On Sat, 22 Oct 2005 12:59:01 +0200, <sp...@fr...> wrote:

> Hi,
>
> I am using an old PC as router for my home network.
> At the moment it is standing beside my desktop pc and I have a monitor  
> attached to it.
>
> Now I wanted to place the router some where elses and I also wanted to  
> remove the monitor from it.
>
> I thought a small LCD display would be great to display the status of  
> the box.
>
> Now my question is:
>
> Is it possible to display the "power off" message on a LCD? Or at what  
> stage of the shut down is the driver unloaded, so that no further  
> display is possible?
>
> I would like to have a message on the LCD when it is safe to power off  
> the router, without destroying my installation.
>
> Thanks for reading,
> FReAK

There's a Linuxfocus article about a Shutdown-Led:

http://linuxfocus.org/English/January2001/article186.shtml

Or get a PC with ATX Power, which shuts itself down.

However you could re-write the lcd4linux code where the 'Goodbye' message  
is displayed, when the program is stopped.

Greetings, Stefan

[lcd4linux] Display for a router

[<sp...@fr...>]

Hi,

I am using an old PC as router for my home network.
At the moment it is standing beside my desktop pc and I have a monitor atta=
ched to it.

Now I wanted to place the router some where elses and I also wanted to remo=
ve the monitor from it.

I thought a small LCD display would be great to display the status of the b=
ox.

Now my question is:

Is it possible to display the "power off" message on a LCD? Or at what stag=
e of the shut down is the driver unloaded, so that no further display is po=
ssible?

I would like to have a message on the LCD when it is safe to power off the =
router, without destroying my installation.

Thanks for reading,
FReAK=0A=0A=0A=0A"Jetzt Handykosten senken mit klarmobil - 18 Ct./Min.! Hie=
r klicken"=0Awww.klarmobil.de/index.html?pid=3D73025=0A

[lcd4linux] (OT) LCD terminal on Linksys NSLU2

[Phil E. <spa...@ch...>]

Dear Lcd4Linux people,

This is a bit off-topic, but I thought some of you might be interested 
in this page

	http://chezphil.org/slugterm/

where I describe how I've connected a 4x20 LCD to my Linksys NSLU2.  The 
NSLU2 (or Slug to its friends) is a tiny cheap box with Ethernet and USB 
interfaces with at least five different ways of running Linux on it. 
Mine is used mainly as a print server, and the LCD is to display the 
print queue.  (I'm still lacking a good utility to stop/start print 
jobs, etc, and any suggestions would be welcome.  It's running a "real" 
terminal emulation, not lcd4linux.)

Cheers,

--Phil.

[lcd4linux] Crystalfontz 635 usb display...........

[Andy S. <an...@pl...>]

Hi, i have one of these 4x20 usb displays in my tower...it allso has the
auxilary SCAB board. Right now all i do with it is control ATX-power
on/off & reset via the keypad. I would like to control/operate this
display for some basic system info while running linux. Is this possible
with lcd4linux & 635? Any help/suggestions would be most appreciated.
Thx & have a nice day.
Andy.

RE: [lcd4linux] problem with big HD44780 display

[Luis.F.Correia <Lui...@se...>]

Hi! 

> -----Original Message-----
> From: Matthias Merkel [mailto:lcd...@me...] 
> Sent: Sunday, October 16, 2005 10:02 AM
> To: lcd...@li...
> Subject: Re: [lcd4linux] problem with big HD44780 display
> 
> Hi Michael,
> 
> I tried it with ENABLE2 and GND, but it still does not work.
> What keeps me wondering is that it worked without in the old version.
> Unfortunately I did not produce the psnnel connection myself.
> I bought it through ebay some years ago, so I don't know the 
> connections.
> As I said in my first mail, I just know it worked with the 
> old version.
> 

Any 40x4 LCD display has two HD44780, thus the need for a ENABLE2 line.

If you can, check which pins connect to the paralell port and adjust
lcd4linux.conf file accordingly.

Also, check in the 'version that works' which config file you were
using.

Luis Correia