lcd4linux-users

[lcd4linux] Fwd: write to lcd4linux from an application?

[Richard M. <mue...@go...>]

Sorry for writing to the wrong address!


---------- Forwarded message ----------
From: Richard Müller <mue...@go...>
Date: 2010/1/4
Subject: write to lcd4linux from an application?
To: lcd...@li...


Good evening,
I successfully (thanks for helping) run a display at my parrallel port
and I want to use for showing the output of a (pascal coded)
application.
(The application reads from two serial ports, and the results,
computed by the program from the port's reading, should be displayed).
I tried to write the output to a file and display the text by using
the readfile plugin. But that means to open and close the files over
and over and that doesn't lead to nice result.
Can I treat the lcd as a file and write to that file, as I would do
with serial displays?
The background is, I am constructing a portable measuring unit with no
monitor, it has only that lcd for output.
Richard

--
Richard Müller . Am Spring 9 . D-58802 Balve
www.oeko-sorpe.de



-- 
Richard Müller . Am Spring 9 . D-58802 Balve
www.oeko-sorpe.de

Re: [lcd4linux] Fwd: write to lcd4linux from an application?

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

Hi Richard,

> Good evening,
> I successfully (thanks for helping) run a display at my parrallel port
> and I want to use for showing the output of a (pascal coded)
> application.
> (The application reads from two serial ports, and the results,
> computed by the program from the port's reading, should be displayed).
> I tried to write the output to a file and display the text by using
> the readfile plugin. But that means to open and close the files over
> and over and that doesn't lead to nice result.
> Can I treat the lcd as a file and write to that file, as I would do
> with serial displays?
> The background is, I am constructing a portable measuring unit with no
> monitor, it has only that lcd for output.

Maybe you want to give the FIFO plugin a try?

HTH, Michael

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

Re: [lcd4linux] Fwd: write to lcd4linux from an application?

[Markus <fu...@fr...>]

Hallo,

maybe you can write to a RAMdisk? Or do you already?
If you have another solution (f.e. FIFO) let us know.

Best regards
Markus

Am Montag, den 04.01.2010, 17:25 +0100 schrieb Richard Müller:
> Sorry for writing to the wrong address!
> 
> 
> ---------- Forwarded message ----------
> From: Richard Müller <mue...@go...>
> Date: 2010/1/4
> Subject: write to lcd4linux from an application?
> To: lcd...@li...
> 
> 
> Good evening,
> I successfully (thanks for helping) run a display at my parrallel port
> and I want to use for showing the output of a (pascal coded)
> application.
> (The application reads from two serial ports, and the results,
> computed by the program from the port's reading, should be displayed).
> I tried to write the output to a file and display the text by using
> the readfile plugin. But that means to open and close the files over
> and over and that doesn't lead to nice result.
> Can I treat the lcd as a file and write to that file, as I would do
> with serial displays?
> The background is, I am constructing a portable measuring unit with no
> monitor, it has only that lcd for output.
> Richard
> 
> --
> Richard Müller . Am Spring 9 . D-58802 Balve
> www.oeko-sorpe.de
> 
> 
> 

[lcd4linux] suspend, hibernate and clock adjust

[Lorenzo L. <lor...@ho...>]

Greetings,

I'm using lcd4linux from several months and I found it very usefull. Actually 
it is quite stable and reliable, but have some minor issue.

Expecially when I hibernate the computer, after resuming, lcd4linux simply 
hang. Sometime restarting the process help, sometime I need to kill -9 
lcd4linux/G15_Thread, some other there is no way to get it back to life. I 
simply need to reboot.

It happens as well when I suspend or when I ntpdate over internet, but less 
than with hibernate.

There is any way to fix this?

Thank you,
Lorenzo

Re: [lcd4linux] suspend, hibernate and clock adjust

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

Hi Lorenzo,

> Expecially when I hibernate the computer, after resuming, lcd4linux simply 
> hang. Sometime restarting the process help, sometime I need to kill -9 
> lcd4linux/G15_Thread, some other there is no way to get it back to life. I 
> simply need to reboot.
> 
> It happens as well when I suspend or when I ntpdate over internet, but less 
> than with hibernate.
> 
> There is any way to fix this?

I think this is a known issue, which should already be fixed in SVN. There was a bug in a delay loop, causing it to loop
forever when time jumped backwards.

Please test with the current version from SVN. If the issue still exists, I will investigate further.


bye, Michael

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

[lcd4linux] Odp: suspend, hibernate and clock adjust

[Michał O. <sys...@wp...>]

I'm simply restarting the daemon on resuming after standby.
Simple and useful method.

However, i don't have any problems with ntpdate..

Dnia 21-01-2010 o godz. 9:04 Lorenzo Lolli napisał(a):
> Greetings,
> 
> I'm using lcd4linux from several months and I found it very usefull.
> Actually
> it is quite stable and reliable, but have some minor issue.
> 
> Expecially when I hibernate the computer, after resuming, lcd4linux simply
> hang. Sometime restarting the process help, sometime I need to kill -9
> lcd4linux/G15_Thread, some other there is no way to get it back to life. I
> simply need to reboot.
> 
> It happens as well when I suspend or when I ntpdate over internet, but
> less
> than with hibernate.
> 
> There is any way to fix this?
> 
> Thank you,
> Lorenzo
> 
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