1 首先安装必要的工具
sudo apt-get install libtool autoconf automake git
2 使用git获取tslib源代码
git clone https://github.com/kergoth/tslib
3 支持友善之臂一线触摸的tslib补丁tslib-one-wire.patch
友善已经提供开源tslib（源码见：http://www.arm9home.Net/read.php?tid-16105.html）。
但是另外再编译它有点罗嗦，所以我直接制作一个补丁tslib-one-wire.patch来支持友善之臂一线触摸。
操作如下，把tslib-one-wire.patch拷贝到tslib根目录，然后补丁上：
- cp tslib-one-wire.patch tslib/
- cd tslib/
- patch -p1 <tslib-one-wire.patch
tslib-one-wire.patch源码见下，copy下来然后命名成tslib-one-wire.patch就ok了，然后用上面操作。
- #
- # This patch adds support for one wire input raw module (Linux /dev/touchscreen-1wire support).
- #
- # Signed-off-by: Richard Nee <[email protected]>
- #
- --- tslib.orig/configure.ac 2012-05-07 22:28:42.000000000 +0800
- +++ tslib/configure.ac 2012-05-07 23:53:18.849542215 +0800
- @@ -68,6 +68,7 @@
- TSLIB_CHECK_MODULE([dmc], [yes], [Enable building of dmc raw module (HP iPaq DMC support)])
- TSLIB_CHECK_MODULE([input], [yes], [Enable building of generic input raw module (Linux /dev/input/eventN support)])
- TSLIB_CHECK_MODULE([touchkit], [yes], [Enable building of serial TouchKit raw module (Linux /dev/ttySX support)])
- +TSLIB_CHECK_MODULE([one-wire-ts-input], [yes], [Enable building of one wire input raw module (Linux /dev/touchscreen-1wire support)])
- AC_MSG_CHECKING([where to place modules])
- AC_ARG_WITH(plugindir,
- --- tslib.orig/plugins/Makefile.am 2012-05-07 22:28:42.000000000 +0800
- +++ tslib/plugins/Makefile.am 2012-05-08 00:08:59.229542649 +0800
- @@ -114,6 +114,12 @@
- CY8MRLN_PALMPRE_MODULE =
- endif
- +if ENABLE_ONE_WIRE_TS_INPUT_MODULE
- +ONE_WIRE_TS_INPUT_MODULE = one_wire_ts_input.la
- +else
- +ONE_WIRE_TS_INPUT_MODULE =
- +endif
- +
- pluginexec_LTLIBRARIES = \
- $(LINEAR_MODULE) \
- $(DEJITTER_MODULE) \
- @@ -130,7 +136,8 @@
- $(H2200_LINEAR_MODULE) \
- $(INPUT_MODULE) \
- $(TOUCHKIT_MODULE) \
- - $(CY8MRLN_PALMPRE_MODULE)
- + $(CY8MRLN_PALMPRE_MODULE) \
- + $(ONE_WIRE_TS_INPUT_MODULE)
- variance_la_SOURCES = variance.c
- variance_la_LDFLAGS = -module $(LTVSN)
- @@ -185,3 +192,6 @@
- cy8mrln_palmpre_la_SOURCES = cy8mrln-palmpre.c
- cy8mrln_palmpre_la_LDFLAGS = -module $(LTVSN)
- +
- +one_wire_ts_input_la_SOURCES = one-wire-ts-input.c
- +one_wire_ts_input_la_LDFLAGS = -module $(LTVSN)
- --- tslib.orig/plugins/plugins.h 2012-05-07 22:28:42.000000000 +0800
- +++ tslib/plugins/plugins.h 2012-05-07 23:57:38.369542335 +0800
- @@ -16,3 +16,4 @@
- TSLIB_DECLARE_MODULE(tatung);
- TSLIB_DECLARE_MODULE(input);
- TSLIB_DECLARE_MODULE(cy8mrln_palmpre);
- +TSLIB_DECLARE_MODULE(one_wire_ts_input);
- --- /dev/null 2012-05-08 11:52:49.481035009 +0800
- +++ tslib/plugins/one-wire-ts-input.c 2012-05-08 12:04:38.749035337 +0800
- @@ -0,0 +1,66 @@
- +#include <termios.h>
- +#include <stdio.h>
- +#include <unistd.h>
- +#include <stdlib.h>
- +#include <sys/types.h>
- +#include <sys/stat.h>
- +#include <sys/ioctl.h>
- +#include <fcntl.h>
- +#include <linux/fs.h>
- +#include <errno.h>
- +#include <string.h>
- +#include <sys/utsname.h>
- +#include <time.h>
- +
- +#include "config.h"
- +#include "tslib-private.h"
- +
- +static int misc_read(struct tslib_module_info *inf, struct ts_sample *samp, int nr)
- +{
- + struct tsdev *ts = inf->dev;
- +
- + int ret;
- + unsigned ts_status;
- + ret = read(ts->fd, &ts_status, sizeof ts_status);
- + if (ret < 0) {
- + return 0;
- + }
- + if (ret == 0) {
- + return 0;
- + }
- +
- + samp->x = ((ts_status) >> 16) & 0x7FFF;
- + samp->y = ts_status & 0x7FFF;
- + samp->pressure = ts_status >> 31;
- + gettimeofday(&samp->tv,NULL);
- + nr = nr;
- +
- + return 1;
- +}
- +static int ts_fini(struct tslib_module_info *inf)
- +{
- + free(inf);
- + return 0;
- +}
- +
- +static const struct tslib_ops misc_ops =
- +{
- + .read = misc_read,
- + .fini = ts_fini,
- +};
- +
- +TSAPI struct tslib_module_info *one_wire_ts_mod_init(struct tsdev *dev, const char *params)
- +{
- + struct tslib_module_info *m;
- +
- + m = malloc(sizeof(struct tslib_module_info));
- + if (m == NULL)
- + return NULL;
- +
- + m->ops = &misc_ops;
- + return m;
- +}
- +
- +#ifndef TSLIB_STATIC_FRIENDLYARM_TS_MODULE
- +TSLIB_MODULE_INIT(one_wire_ts_mod_init);
- +#endif
4 下面是配置编译tslib
./autogen.sh
echo "ac_cv_func_malloc_0_nonnull=yes">arm-none-linux-gnueabi.cache
./configure --host=arm-none-linux-gnueabi --cache-file=arm-none-linux-gnueabi.cache --prefix=/opt/tslib_new3
make && make install
5:编译one-wire-ts-input.so
step1: 解压源代码包，执行make
#tar xvzf one-wire-ts-input-src-20111026.tar.gz（下载地址：http://download.csdn.net/download/bobbat/9528962）
#make
得到" one-wire-ts-input.so "，把它放入板子中，目录为：/opt/tslib_new3/lib/ts/
交叉编译 host,build target的含义：
build就是你正在使用的机器,host就是你编译好的程序可以运行的平台,
target就是你编译的程序可以处理的平台.
这个 build和host比较好理解,但是target就不好办了,到底什么意思呢?
一般来说,我们平时所说的交差编译用不到他target的,
比如. /configure --build=i386-linux,--host=arm-linux就可以了,在386的平台上编译可以运行在arm板的程序.
配置文件ts.conf内容如下：
module_raw input (去掉前面的# 和空格，其他的保持不变)module pthres pmin=1
module variance delta=30
module dejitter delta=100
module linear
module_raw有许多种，这里只使用input(即Linux的input子系统，设备文件名称为/dev/event1)/dev/event0为触模屏的设备节点
vi /etc/profile 中添加如下命令
export TSLIB_TSDEVICE=/dev/event0 指定触屏设备export TSLIB_CALIBFILE=/etc/pointercal 指定触摸屏校准文件 pintercal 的存放位置
export TSLIB_CONFFILE=/etc/ts.conf 指定 TSLIB 配置文件的位置
export TSLIB_PLUGINDIR=/lib/ts/ 指定触摸屏插件所在路径
export TSLIB_CONSOLEDEVICE=/dev/tty1 设定控制台设备为 none ，否则默认为 /dev/tty ，这样可以避免出现“open consoledevice: No such file or directory KDSETMODE: Bad file descriptor ” 的错误
export TSLIB_FBDEVICE=/dev/fb0 指定帧缓冲设备