LCD drivers

it's a character device, you can probably use a standard tty driver, and  
customise a tad.

: > hi all,
: >
: > I have to write various application for a vortex86 board.In that i have
: > got 2 X 20 LCD display.Do i have to write a driver for that from the
: > scratch,if so plz suggest some sites for that or is any open source
: > available for that and plz can anybody suggest
: > some details regarding this.
: > regards
: > konkan
: >

: it's a character device, you can probably use a standard tty driver, and  
: customise a tad.

Oh yeah, just a tad :-)

Don't know the board - whats the interface to the LCD? Is it a parallel
interface?

Is the board HD44780 compatible, if so there is loads of example code out
there for driving these boards - do a google search. You may be able to
do a userspace program.

If you write a userspace daemon that is accessed by other programs via a
named pipe you have a lazypersons driver of sorts.

hi,
Thanx 4 the reply.Here i have got a serial interface.
i have to use this 2 x 20 Lcd for monitoring various app like 2d games
and all.

Do i have to write a driver 4 that ,or can i send datas trough the
serial port itself.will there be controller 4 this LCD.

plz give me some suggestions..
regards
konkan

: hi,
: Thanx 4 the reply.Here i have got a serial interface.

If it's an standard rs232 interface then it should be a no-brainer, and
you should be able to just do everything in user space.

: i have to use this 2 x 20 Lcd for monitoring various app like 2d games
: and all.

: Do i have to write a driver 4 that ,or can i send datas trough the
: serial port itself.will there be controller 4 this LCD.

: plz give me some suggestions..
: regards
: konkan

hi,
thank u 4 ur reponse.so what i got from ur suggestion is that,to take
the std tty
driver and to customise it according to my requirements right....

regards
konkan
jim dorey wrote:

have
the
and  

if it has serial interface capabilities then it'll probably be a breeze to  
use the tty driver, if it's a parallel lcd it's a little more  
complicated.  you can pester the guys at lcdproc for info, but there's a  
bunch of parallel lcd's with serial modes, so the list of lcd's you  
wouldn't be able to use the standard tty drivers on are more manageable.