X11 server

Introduction

Even if using an Xserver in an embedded context is most of the times not a necessity, it could be interesting in some "PDA like" applications, where existing applications reuse is needed. Even if recent embedded systems are capable of running a full Xorg server, in low RAM embedded systems we prefer to use the reduced version TinyX/Xfbdev, which is an upper layer of the Linux Framebuffer.

Installing

$ make menuconfig

Low RAM

> 256 Mbytes RAM

Target packages ---> Graphic libraries and applications (graphic/text) ---> [*] X.org X Window System ---> X11R7 Servers ---> [*] xorg-server X Window System server type (KDrive / TinyX) ---> [ ] Null root cursor [ ] Enable AIGLX Extension [*] Enable KDrive/TinyX evdev input driver [*] Enable KDrive/TinyX kbd input driver [*] Enable KDrive/TinyX mouse input driver *** Optional Servers *** [ ] Xvfb server

Target packages ---> ... Graphic libraries and applications (graphic/text) ---> [*] X.org X Window System ---> X11R7 Servers ---> X Window System server type (Modular X.org) ---> ... X11R7 Drivers ---> [*] xf86-input-evdev [*] xf86-input-keyboard [*] xf86-input-mouse [*] xf86-input-tslib [*] xf86-input-fbdev

• Add some applications ;-)

            ...
            X11R7 Applications  --->
                ...
                [*] xclock
                ...
                [*] xeyes
        ...
        [*] xterm

Launching

• For example, with a mouse and a keyboard (event0):

# /usr/bin/X -mouse evdev -retro -keybd evdev,,device=/dev/input/event0 &

• Or with a touchscreen (event0):

# /usr/bin/X -retro -mouse tslib,,device=/dev/input/event0 &

then you will need to launch a window manager (like Matchbox/Blackbox/Fluxbox/Openbox) and some applications....

# xterm &
# xeyes &