Tiny6410 porting tslib1.4

System: Ubuntu 11.04

Compilation Tools: arm-linux-gcc 4.3.2

Compile target: tslib1.4

(1) Install arm-linux-gcc 4.3.2,

(2) Extract tslib-1.4.tar.gz to any directory

(3) Enter tslib directory cd tslib

Due to the first-line touch of tiny6410, you need to change the program, according to others:

Open tslib/plugins/input-raw.c

Change the ts_input_read function to the following:

[cpp] view plaincopyprint? static int ts_input_read(struct tslib_module_info *inf,

struct ts_sample *samp, int nr)

{

printf (" HEAD=== ts_input_read in INPUT-RAW.C\ ");

struct tslib_input *i = (struct tslib_input*)inf;

struct tsdev *ts = inf->dev ;

struct input_event ev;

int ret = nr;

int total = 0;

unsigned long jjts;

While(total

{

ret =read(ts->fd, &jjts,sizeof(jjts));

//if (ret==- 1) continue;

if (ret==-1) return 0;

samp->pressure=(jjts>>31)& 0x01;

Samp->x=(jjts>>16)& 0xffff;

samp->y=jjts & 0xffff;

samp++;

total++;

}

ret=total;

return ret;

}

Special Note:

A lot of information, above is if (ret==-1) continue; after doing it, I found that the touch screen can be calibrated, but when running the qt program, the cursor can move, but the click is invalid. So change to

if (ret==-1) return 0; the problem is solved.

(4) Install library support:

sudo apt-get install autoconf automake libtool

(5)export PREFIX=/opt/tslib Set target location

(6)./autogen.sh is used to generate the configure script

(7)echo "ac_cv_func_malloc_0_nonnull=yes" >arm-linux.cache Generate a cache file arm-linux.cache, deceive configure

(8)CC=arm-linux-gcc ./configure --host=arm-linux --prefix=$PREFIX --cache-file=arm-linux.cache

( 9) make

(10) make install

After compiling successfully, generate /bin, /etc, /include, /lib 4 folders in the target location

(11 Modify the /opt/tslib/etc/ts.conf file and delete the contents to

module_raw input

module pthres pmin=1

module variance delta=30

module dejitter delta=100

module linear

The first line is the module that tslib needs to read data from the linux input device. The module specified here is Input, which needs to be used Modules, need to refer to other data.

The second line of pthres provides the touchscreen sensitivity threshold for Tslib.

The third line of variance provides a touchscreen filtering algorithm plugin for Tslib.

The fourth line of dejitter is a plugin for the touchscreen denoising algorithm provided by Tslib.

The fifth line is a touchscreen coordinate transformation plugin provided by Tslib.

(12) Copy the tslib folder under /opt to /opt under the arm file system

(13) Set the environment variable script tslib.sh

[java View plaincopyprint? #!/bin/sh

export TSLIB_ROOT=/opt/tslib

export TSLIB_TSDEVICE=/dev/touchscreen-1wire

export TSLIB_CALIBFILE=$TSLIB_ROOT/Etc/pointercal

export TSLIB_CONFFILE=$TSLIB_ROOT/etc/ts.conf

export TSLIB_PLUGINDIR=$TSLIB_ROOT/lib/ts

export TSLIB_CONSOLEDEVICE=/dev/tty

export TSLIB_FBDEVICE=/dev/fb0

(14) Start the arm board and execute the script from the command line

source tslib.sh

(15) Calibrate the touch screen

cd /opt/tslib/bin

./ts_calibrate

A calibration screen will appear, and a pointercal file will be generated upon completion

(16)Links

ln -s /opt/tslib/etc/pointercal /etc/pointercal

At this point, tslib1.4 porting is complete