Console Output OSELAS.BSP Mini2440

Forum: Linux
Titus Breidung 
Hi!

I have compiled OSELAS.BSP 2012.06.0 with Kernel 3.4 for Mini2440. Works
fine! The console on ttySAC0 is ok, but how can i get text on the
framebuffer? I want to use nurses in a little program.

The frame buffer itself is working, ts_calibrate, ts_test is working and
the QT4-demo too.

Is there a way to get messages on the screen with C++?

Thank you and good night! ;-)

Titus

davef 
Device Drivers  --->
  Character devices  --->
    [*] Virtual terminal
    [*]   Enable character translations in console
    [*]   Support for console on virtual terminal

davef 
or maybe this:

Graphics support  --->
[*] Support for frame buffer devices  --->
<*> S3C2410 LCD framebuffer support       

    Console display driver support  ---> 
      <*> Framebuffer Console support
      [*] Map the console to the primary display device
      [*] Select compiled-in fonts 
      [*] VGA 8x8 font

Juergen Beisert 
The "nurses"-library is a nice typo :)

Titus Breidung 
Works perfectly, thank you very much!

I followed both of your suggestions. While booting the kernel now Tux is
shown in the upper left corner, and in /dev are tty1 ... ttyn and vcs
devices i never seen before.

Writing to screen can be done by directing the output to /dev/tty1.
Directing the output to /dev/vcs1 works too, but give a strange sign at the
end of each line caused by the CR character and is always started at the
first line of the screen.

I did not tested it, but i think the tty devices were created by the
'Console display driver support' option and the vas devices by 'Virtual
termimal'.

Great, thanks a lot!

Titus

Titus Breidung 
@Jürgen:

:-) yes, i laughed too. Of course i use nurses, not nurses ;-)

Titus Breidung 
hmmm... it is caused by the spelling check of my browser.

ncurses!

Titus Breidung 
I have another question regarding the framebuffer console...

Is it possible to enable colors on the console?

I did not find any useful kernel option to solve this.

Thanks!

Titus

Juergen Beisert 
The console emulates a standard terminal. So, you should be able to use the
ANSI colour strings to change the colour of the chars.

fatbrain 
Hi Titus
With 3.4 did the sound work?

thanks

Titus Breidung 
I do not use sound, but i will test it this evening and report.

With ANSI colour strings i did not succeed, but i try it again later, thank
you Jürgen!

Juergen Beisert 
With the 3.4 kernel from the Mini2440 BSP the sound will not work. Its
broken since 3.2. Don't know why yet. Use the 3.1 kernel from the Mini2440
BSP and sound still works.

Titus Breidung 
I solved the problem with the colored terminal...

Declaring environment variable TERM as 'linux' instead of vt100 gives the
screen the ability of showing and declaring colors. Curses functions
hasColors() and canChangeColors() returning true now.

To get an nice output of Midnight Commander on ssh i exported TERM=xterm in
/etc/profile.environment and in the start script of my application
TERM=linux for having colors and no wracked lines.

Don't know why it would not work with vt100, but this is unimportant now
;-)

davef 
Titus,

I built MC with gpm mouse support then did a site search to see if anyone
had tried using it.  Then I noticed your comments about TERM=linux.

I had to do this to get syntax highlighting working properly in nano.

Your comment:

> i exported TERM=xterm in /etc/profile.environment and in the start
> script of my application TERM=linux for having colors and no wracked
> lines.

I found just TERM=linux was enough for nano.  Is there some reason you use
TERM=xterm for other applications and then switch to TERM-linux for MC?

Is "my application" something other than Midnight Commander itself, so you
had to make your own configuration file.

Thanks,
Dave