Re: [Lcd4linux-devel] lcd4linux - SED1530

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

Hi Moppel,

> I finished writing a driver for the EPSON - Seiko  sed1530 for lcdproc 
> yesterday. I havn't had a look at lcd4linux driver API yet and therefore I 
> have no idea how difficult it would be porting that thing.

I have a SED display myself, but couldn't find the time to connect it. 
It's made by Optrex, and uses a SED1531 controller. Would this be 
compatible to your driver?

As for the API, they differ a lot. I think the lcd4linux driver API is 
easier and smaller (because of such things as parallel port abstraction, 
generic text and/or graphic display drivers, ...). For text displays, 
you need to define three functions: goto(x,y), write (text, len) and 
define_char(ascii, bitmap). A graphic display just needs one blit() 
function. Everything else is done by the other layers. Really easy and 
straightforward, believe me.

Just a quick example: The Cwlinux driver has 350 lines of code in 
lcd4linux, but 1550 lines in lcdproc...

btw, I tried to find your driver, but failed....

> Due to lack of time I won't be able to do that myself in the foreseeable 
> future but I'd happily provide the code if someone would like to do that. Of 
> course, I would be willing to test it too.
> Is anyone interested?

Of course I'm interested! Where can I find it? I checked lcdproc CVS, 
and lcdproc-0.5 CVS, but could not find any sed1530 driver there...


bye, Michael

-- 
Michael Reinelt                                   Tel: +43 676 3079941
Geisslergasse 4                                   Fax: +43 316  692343
A-8045 Graz, Austria                          e-mail: re...@eu...