Leapster Explorer: tslib Touchscreen Library - Revision history

Peter Huewe: ac

2011-10-27T09:59:20Z

Reggie: /* Building tslib */

2010-10-10T17:47:10Z

‎Building tslib

Reggie: /* Building tslib */

2010-09-23T20:45:56Z

‎Building tslib

Reggie: /* Building tslib */

2010-09-23T19:39:10Z

‎Building tslib

Reggie: /* Building tslib */

2010-09-23T19:22:51Z

‎Building tslib

Nirvous at 23:52, 1 September 2010

2010-09-01T23:52:48Z

Nirvous: Created page with 'tslib Touchscreen Library == Background == Tslib is an abstraction layer for touchscreen panel events, as well as a filter stack for the manipulation of those events. Examples o…'

2010-09-01T16:46:21Z

Created page with 'tslib Touchscreen Library == Background == Tslib is an abstraction layer for touchscreen panel events, as well as a filter stack for the manipulation of those events. Examples o…'

New page

tslib Touchscreen Library

== Background ==
Tslib is an abstraction layer for touchscreen panel events, as well as a filter stack for the manipulation of those events. Examples of implemented filters include jitter smoothing and the calibration transform. Tslib is generally used on embedded devices to provide a common user space interface to touchscreen functionality.

== Building tslib ==
Follow the steps below to build tslib for Leapster Explorer. (We leverage the existing event device)

Download tslib from the github repository:

git clone http://github.com/kergoth/tslib

In the tslib directory, create a folder called build:

cd tslib
mkdir build

Set up your cross compiler's environment variables accordingly (ex: source crosscompile)

Configure the compilation:

./configure --build=i386-linux --host=arm-linux --target=arm --prefix=$PWD/build

Compile tslib

make

Populate the build directory with the result

make install

Copy the etc/ts.conf file to the LX in the /etc directory.

Copy the contents of lib to the LX in the /usr/lib directory.

Copy the contents of bin to the LX into a directory of your choosing.

Add the following lines to the LX file called /etc/profile:

<code>
export TSLIB_TSEVENTTYPE=INPUT
export TSLIB_CONSOLEDEVICE=none
export TSLIB_FBDEVICE=/dev/fb0
export TSLIB_TSDEVICE=/dev/input/event3
export TSLIB_CALIBFILE=/etc/pointercal
export TSLIB_CONFFILE=/etc/ts.conf
export TSLIB_PLUGINDIR=/usr/lib/ts
</code>

Then, 'source' the file:

. /etc/profile

Once that is done, boot the fbdev kernel, modprobe lf1000_ts, then run ts_calibrate and ts_test.

To include this library in your applications:
Copy the contents of lib to your compiler's lib directory (in buildcross: sys-root/usr/lib)
Copy the contents of include to your compiler's include directory (in buildcross: sys-root/usr/include)

==To Do==
Using tslib in your applications.

← Older revision		Revision as of 09:59, 27 October 2011
Line 82:		Line 82:
	==To Do==		==To Do==
	Using tslib in your applications.		Using tslib in your applications.
		+
		+
		+	[[Category:Leapster Explorer]]

← Older revision		Revision as of 17:47, 10 October 2010
Line 26:		Line 26:

	./configure --build=i386-linux --host=arm-linux --target=arm --prefix=$PWD/build		./configure --build=i386-linux --host=arm-linux --target=arm --prefix=$PWD/build
		+
		+	'''fix ts_calibrate app'''
		+	before you compile tslib you need to edit one of the test applications, ts_calibrate, otherwise it doesn't quite calibrate properly, edit lines 238-244 so they look like the following:
		+
		+	get_sample (ts, &cal, 0, 10, 10, "Top left");
		+	clearbuf(ts);
		+	get_sample (ts, &cal, 1, xres - 10, 10, "Top right");
		+	clearbuf(ts);
		+	get_sample (ts, &cal, 2, xres - 10, yres - 10, "Bot right");
		+	clearbuf(ts);
		+	get_sample (ts, &cal, 3, 10, yres - 10, "Bot left");
		+
		+	Now you've changed the screen position of the calibration boxes closer to the corners it should calibrate a lot nicer than it did.

	Compile tslib		Compile tslib

← Older revision		Revision as of 20:45, 23 September 2010
Line 34:		Line 34:

	make install		make install
		+
		+	edit .build/etc/ts.conf file and change line 2 so it looks like this:
		+	module_raw input

	Copy the etc/ts.conf file to the LX in the /etc directory.		Copy the etc/ts.conf file to the LX in the /etc directory.

← Older revision		Revision as of 19:22, 23 September 2010
Line 7:		Line 7:
	Download tslib from the github repository:		Download tslib from the github repository:

−	git clone http://github.com/kergoth/tslib	+	git clone http://github.com/kergoth/tslib.git

← Older revision		Revision as of 23:52, 1 September 2010
Line 1:		Line 1:
−	~~tslib Touchscreen Library~~
−
	== Background ==		== Background ==
	Tslib is an abstraction layer for touchscreen panel events, as well as a filter stack for the manipulation of those events. Examples of implemented filters include jitter smoothing and the calibration transform. Tslib is generally used on embedded devices to provide a common user space interface to touchscreen functionality.		Tslib is an abstraction layer for touchscreen panel events, as well as a filter stack for the manipulation of those events. Examples of implemented filters include jitter smoothing and the calibration transform. Tslib is generally used on embedded devices to provide a common user space interface to touchscreen functionality.

@@ Line 18: / Line 18: @@
 Set up your cross compiler's environment variables accordingly (ex: source crosscompile)
-Configure the compilation:
+First time configuration requires that you run tslib autogen.sh script to generate configure script:
   ./configure --build=i386-linux --host=arm-linux --target=arm --prefix=$PWD/build