Tslib1.0 Port

To transplant QT, you must support the tslib touch screen correction program. The following describes how to compile and transplant tslib1.0.

: Http://www.rayfile.com/zh-cn/files/a01f838a-c1bb-11e0-aaa6-0015c55db73d/

# Tar zxvf tslib-1.0.tar.bz2

1. Generate a. configure file

./Autogen. Sh

2. Specify the cross compiler and configuration script

# Cc = arm-Linux-GCC // select Cross Compiler

#./Configure -- Host = arm-Linux -- prefix = $ PWD/../tslib1.0 _ target -- enable-inputapi = No

// Create the target folder in the first-level directory of the current path

# Exportplugin_dir = $ PWD/plugins

3. Compile

There is a line in tslib-1.0 \ config. h defining "# define malloc rpl_malloc", directly comment

# Make

# Make install

The tslib_target folder will be created under the same level as the current directory, which contains bin/etc/include/lib/and other folders

 

3. port to the Development Board

1) Create the tslib folder in the usr/directory of the Development Board and copy the Four folders to the tslib directory.

# Cd/usr/

# Mkdir/usr/tslib

# Cp tslib_target/*/usr/tslib-R

2) Modify/usr/tslib/etc/ts. conf to remove the blocking of the first sentence.

# Module_raw Input

Change

Module_raw input (note that there is no space before it)

3) modify the/profile file under the/etc directory of the Development Board, add the following STARTUP script and run it.

# Vi/etc/profile

Export t_root =/usr/tslib # directory

Exportpath = $ path: $ t_root/bin # Add the executable program directory to the Environment Variable

Exportld_library_path =/lib:/usr/lib: $ t_root/lib # library file directory

Export tslib_consoledevice = none

Export tslib_fbdevice =/dev/fb0 # framebuffer Device File

Export tslib_tsdevice =/dev/event0 # Touch Screen Device File

Export tslib_calibfile =/etc/pointercal # specify the storage location of the touch screen calibration file pintercal

Export tslib_conffile = $ t_root/etc/ts. conf # configuration file of the tslib Module

Export tslib_plugindir = $ t_root/lib/TS/# directory of the tslib plug-in Library

Echo "ts init success! "

4. Use and Test

1) ts_calibrate

After the task is executed, five dots are displayed on the screen. click Calibrate in sequence. After the calibration is completed, a pointercal file is generated under/etc for use by other programs. ts_calibrate is an application, draw a few buttons on the screen to write the calibration data obtained from the TS driver and the coordinate position on the screen through a set of algorithms to a calibration file.

2) ts_print prints the screen coordinates

Abscissa ordinate

1796351007.320859: 156 116 500 Press

1796351007.355145: 156 116 0 lifted

3) ts_print_raw prints the original screen coordinate data.

1796350964.530867: 216 865 1 Press

1796350989.946831: 0 0 0 lift

4) ts_test checks the calibration result. If the cross cursor moves with the finger during touch

5. answers to common errors

1)

The following error is prompted during the make process:

Libtool: Link: only absolute run-paths areallowed

Forgot to specify the environment variable: exportplugin_dir = $ PWD/plugins

2)

Ts_config: Success

After tracing, an error occurs in opening ts_config.

The Directory of the tslib plug-in library is not specified

Exporttslib_plugindir = $ t_root/share/TS/plugins/# tslib plug-in library directory

3)

Ts_open: Inappropriate ioctol for Device

The Touch Screen driver of the Board does not support IOCTL operations.

Add the -- enable-inputapi = No parameter to. Configure.

4)
./Ts_calibrate: Error while loading shared libraries: libts-0.0.so.0: cannotopen shared object file: Error 40
./Ts_calibrate: Error while loading shared libraries: libts-0.0.so.0: cannotope
N shared object file: no such file or directory

Solution:
# Echo $ LD_LIBRARY_PATH // view the Lib path,
# Export LD_LIBRARY_PATH = $ t_root/lib

5)
Ts_open: no such file or directory
Solution:
# Export tslib_tsdevice =/dev/input/event0 // touch screen device path

6)
Couldnt open tslib config file: no such file or directory ts_config: illegalseek
Solution:
# Export tslib_conffile = $ t_root/etc/ts. conf

7)
Couldnt load module pthres
No raw modules loaded.
Ts_config: Success
Solution:
# Export tslib_plugindir = $ t_root/lib/TS

8)
No raw modules loaded.
Ts_config: no such file or directory
Solution:
Modify $ t_root/etc/ts. conf, open at least one module_raw, and remove the leading space.