Re: TTY discipline for Joypad

[James S. <jsi...@tr...>]

> Hi there, 
> 
> I'm not sure this question is welcomed to this list.  I'm not the
> member of this list yet.

No problem. All questions are welcomed.

> Hence, I'm thinking using Joypad (with cursor key, analog joystick,
> four-buttons, two keys, and start button) to emulate keyboard.
> (There's a joypad driver already.)

Okay. Your doing something similar to the twiddler that we have in CVS
except you are working in the opposite direction. The twijoy driver makes 
a twiddler which is a handheld keyboard act as a joytsick. Of course
emulating a keyboard is much much harder. The input layer doesn't really
do key compose. I have a dreamcast here at work and I do have a keyboard
so I'm wondering how hard is it to get a dreamcast keyboard?

> I think I need to implement some special TTY discipline to input a
> character and to edit a line.  Is there any work done in this area?
> Please let me know.

Nope. We already have a TTY discipline interface to the input layer. Take
a look at the sunkbd.c driver. It is a keyboard that can plug into a
serial port, with a special adaptor. The only problem is with serial lines
devices you need a app called inputattach to actually use the serial
device. You need to do this after insmod the driver for it.  

Hope this helps. Thanks for your interest.