nanogui: Frame buffer Interface
Subject:
Re: Frame buffer Interface
From:
Rosimildo daSilva ####@####.####
Date:
2 Mar 2000 16:43:00 -0000
Message-Id: <200003021632.IAA13337@www1.xoommail.com>
Erwin Rol wrote:
> Greg Haerr wrote:
> >
> > : A small note: RTEMS doesn't not have shared libs, nor the posibility
> > : to load a executable from disk to execute it. Everything is one
> > : binary image. And you will need the posibility to leave out
> > : devices you don't need to keep the memory footh print small.
> >
> > Ooops. In that case, it doesn't matter whether the kernel
> > or the application parses mice bytes, but I still think that it's
> > overkill for the kernel to have to do it, especially if non-posix
> > event structures are invented.
>
> didn't know there where posix mouse-event structures ? :-)
>
> think of it this way;
>
> someone makes a product, with some custom keyboard and joystick.
> he writes al his hasrware drivers and the BSP for his product
> including the framebuffer device.
> Now he wants to use microwindows on it, but of course microwindows
> does not support his own developed joystick and keyboard device.
> Sohe will have to write a driver and interface it with microwindows.
> Which means he also has to learn the inner workings of microwindows and
> so on.
>
>
> now with the input device idea.
>
> he writes his drivers. those drivers post the events to the input queue.
> Micro windows already has a driver to handle the unified input device.
> so he doesn't have to write a driver for microwindows, and microwindows
> supports any device that one can make as long as it can convert its
> input
> to the events. everybody is happy :-)
>
> so for microwindows it is just and other device like a ps2 mouse
> PC-keyboard joystick
> etc. just like the framebuffer hides the video hardware.
>
> just an idea :-)
>
Hi guys,
Finally got sometime to move on with the Micro FrameBuffer stuff.
I have specified an interface for input devices as suggested.
I thing it is pretty nice, and it'll make eisier the port
of MicroWindows to others RTOS.
This link has an initial document and a reference implementation
for RTEMS.
http://members.xoom.com/rosimildo/mw_uid.html
Hopefully, I would get everything merged with the "0.88pre1"
release soon. It seems to be faster.
As usual, comments are welcomed.
Rosimildo.
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