Subject: Problems with DMC touch screen driver (FIT-10 controller).

Mon, 30 Jun 2003 00:59:29 -0700

I have a problem with the DMC touch screen driver. Almost everything is working fine except clicking a button. I think the reason is that XFree86 doesn’t get a ButtonRelease event after releasing the button (touch screen).

I conclude this from the events that occur.

 

Example nr1:

If I push a button, the button keeps pushed-down until I push on another location. Normally with a mouse you push the left mouse button and if you don’t release the left mouse button, the button on the screen will be pushed down.

 

Example nr2:

If I want to drag a window I push and hold the window and drag it over the screen. When I release the window (I stop pushing the touch screen) I can move the window by using a mouse without touching any buttons from the mouse.

I think XFree86 didn’t get a ButtonRelease event because it is still reacting like someone pushed and hold the left button to drag a window. Physically nobody is touching the buttons from the mouse or touching the touch screen.

 

 

Congiguration of the system:

XFree86 4.3.0 glibc21

 

 

/etc/X11/XF86Config

 

Section "InputDevice"

Identifier           "touchscreen0"

Driver               "dmc"

Option "Device"                       "/dev/ttyS0"

Option "MinX"                         "74"

Option "MaxX"                        "990"

Option "MinY"                         "960"

Option "MaxY"                        "43"

Option "ScreenNumber"           "0"

Option "ReportingMode"          "Scaled"

Option "ButtonNumber"           "1"

Option "SendCoreEvents"

Option "ClickMode"                "1"

EndSection

 

Section "ServerLayout"

 

# The Identifier line must be present

    Identifier  "Simple Layout"

 

# Each Screen line specifies a Screen section name, and optionally

# the relative position of other screens.  The four names after

# primary screen name are the screens to the top, bottom, left and right

# of the primary screen.  In this example, screen 2 is located to the

# right of screen 1.

 

    Screen "Screen 1"

 

# Each InputDevice line specifies an InputDevice section name and

# optionally some options to specify the way the device is to be

# used.  Those options include "CorePointer", "CoreKeyboard" and

# "SendCoreEvents".

 

    InputDevice "touchscreen0" "SendCoreEvents"

    InputDevice "Mouse1" "CorePointer"

    InputDevice "Keyboard1" "CoreKeyboard"

 

EndSection

 

 

I appreciate any help on this subject.

 

Marcel van der Veen

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