tslib 电阻触摸屏调试!!!

wyljkl LV 6

请问一下，电阻触摸屏，使用tslib校准后，查阅到可以通过ts_uinput 命令虚拟出一个event设备，应用层就直接可以通过这个设备来获取坐标了，不知道是否可行？使用后出现下面log：
root@TinaLinux:/# ts_uinput -n /dev/input/event1
tslib: WARNING: no multitouch using VARIANCE filter
open /dev/uinput: No such file or directory
Illegal instruction

是不行？还是我应该在系统层面去生成一个/dev/uinput 设备，这需要打开哪项配置？

whycan晕哥 LV 9

@wyljkl

可以参考这个帖子： D1S芒果派MQ-R在tina-sdk2.0下无法识别电阻触摸屏

① 用这个先生成校准文件：

TSLIB_TSDEVICE=/dev/input/event0 ts_calibrate

② 后台运行 uinput（会产生新的event设备）：

TSLIB_TSDEVICE=/dev/input/event0 ts_uinput

③ 前台执行测试：

TSLIB_TSDEVICE=/dev/input/event2 ts_test

这个坐标应该是正确的。

注意看环境变量！

wyljkl LV 6

@whycan 晕哥，我这边已经校准过了，然后ts_test坐标也对了，现在的问题就是ts_uinput虚拟出来的设备没有报点，这是什么原因？

root@TinaLinux:/# export TSLIB_CALIBFILE=/etc/pointercal;export TSLIB_CONFFILE=/
etc/ts.conf;export TSLIB_PLUGINDIR=/usr/lib/ts;export TSLIB_CONSOLEDEVICE=none;e
xport TSLIB_FBDEVICE=/dev/fb0;export TSLIB_TSDEVICE=/dev/input/event0;
root@TinaLinux:/# 
root@TinaLinux:/# 
root@TinaLinux:/# 
root@TinaLinux:/# ts_calibrate 
xres = 480, yres = 272
Took 15 samples...
Top left : X = 3495 Y = 3300
Took 11 samples...
Top right : X =  557 Y = 3183
Took 11 samples...
Bot right : X =  609 Y =  823
Took 13 samples...
Bot left : X = 3489 Y =  935
Took 14 samples...
Center : X = 2013 Y = 2048
507.976929 -0.130559 -0.001265
279.929535 0.002867 -0.072775
Calibration constants: 33290776 -8556 -82 18345462 187 -4769 65536 
root@TinaLinux:/# 
root@TinaLinux:/# 
root@TinaLinux:/# ts_test
94.175296:    459    237    255
94.175296:    459    237    255
94.185553:    458    237    255
94.195795:    458    237    255
94.206035:    457    238    255
94.216333:    457    239    255
94.226508:    457    239    255
94.236740:    457    240    255
94.246991:    458    240    255
94.350075:    458    239      0
94.773312:    440     93    255
94.773312:    440     93    255
94.783571:    441     92    255
94.890074:    439     91      0
^Csignal 2 caught
root@TinaLinux:/# 
root@TinaLinux:/# TSLIB_TSDEVICE=/dev/input/event0 ts_uinput &
root@TinaLinux:/# tslib: WARNING: no multitouch using VARIANCE filinput: ts_uinput as /devices/virtual/input/input1
ter
tslib: WARNING: no multitouch using VARIANCE filter

root@TinaLinux:/# 
root@TinaLinux:/# 
root@TinaLinux:/# TSLIB_TSDEVICE=/dev/input/event1 ts_test
^Csignal 2 caught
root@TinaLinux:/# 

root@TinaLinux:/etc# ./evtest 
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0:      1c24800.sun3i-rtp
/dev/input/event1:      ts_uinput
Select the device event number [0-1]: 1
Input driver version is 1.0.1
Input device ID: bus 0x6 vendor 0x0 product 0x0 version 0x0
Input device name: "ts_uinput"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 330 (BTN_TOUCH)
  Event type 3 (EV_ABS)
    Event code 48 (ABS_MT_TOUCH_MAJOR)
      Value      0
      Min        0
      Max     1000
    Event code 53 (ABS_MT_POSITION_X)
      Value      0
      Min        0
      Max      479
    Event code 54 (ABS_MT_POSITION_Y)
      Value      0
      Min        0
      Max      271
Properties:
Testing ... (interrupt to exit)
^Croot@TinaLinux:/etc#

whycan晕哥 LV 9

@wyljkl 在 tslib 电阻触摸屏调试!!! 中说：

/dev/input/event0
ls /dev/input/event* -l

看下有没有生成新设备

wyljkl LV 6

@whycan 有的，生成了一个新设备event1
root@TinaLinux:/# ls /dev/input/event* -l
crw-rw---- 1 root root 13, 64 Jan 1 00:00 /dev/input/event0
crw-rw---- 1 root root 13, 65 Jan 1 00:03 /dev/input/event1
root@TinaLinux:/#

whycan晕哥 LV 9

@wyljkl 在 tslib 电阻触摸屏调试!!! 中说：

root@TinaLinux:/etc# ./evtest
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0: 1c24800.sun3i-rtp
/dev/input/event1: ts_uinput
Select the device event number [0-1]: 1
Input driver version is 1.0.1
Input device ID: bus 0x6 vendor 0x0 product 0x0 version 0x0
Input device name: "ts_uinput"
Supported events:
Event type 0 (EV_SYN)
Event type 1 (EV_KEY)
Event code 330 (BTN_TOUCH)
Event type 3 (EV_ABS)
Event code 48 (ABS_MT_TOUCH_MAJOR)
Value 0
Min 0
Max 1000
Event code 53 (ABS_MT_POSITION_X)
Value 0
Min 0
Max 479
Event code 54 (ABS_MT_POSITION_Y)
Value 0
Min 0
Max 271
Properties:
Testing ... (interrupt to exit)
^Croot@TinaLinux:/etc#

这个正常吗？

wyljkl LV 6

@whycan evtest也没有数据

wyljkl LV 6

@whycan 会不会是这个地方还需要打开什么配置？

whycan晕哥 LV 9

@wyljkl
没遇到过。

wyljkl LV 6

@whycan 晕哥，我使用tslib源码包里面的ts_uinput启动脚本他会提示这个问题：
root@TinaLinux:/# ./ts_uinput_start.sh
input: ts_uinput as /devices/virtual/input/input1
ts_uinput: See the kernel log for the device number
ls: tslib: WARNING: no multitouch using VARIANCE filter: No such file or directory
ts_uinput: Error creating event device
这上面提示说没有生成设备，但是单独运行，他是生成了event1的，好奇怪

脚本
ts_uinput_start.sh ：
!/bin/sh

This starts ts_uinput as a daemon and creates /dev/input/ts_uinput to use

as an evdev input device

TS_UINPUT_DEV_FILE=$(ts_uinput -d -v)
TS_UINPUT_DEV_FILE_CHECKED=$(ls "$TS_UINPUT_DEV_FILE" | grep 'event')

if [ ! -z "$TS_UINPUT_DEV_FILE_CHECKED" ]
then
rm -f /dev/input/ts_uinput
ln -s $TS_UINPUT_DEV_FILE_CHECKED /dev/input/ts_uinput
else
echo "ts_uinput: Error creating event device"
exit 1
fi

exit 0

wyljkl LV 6

问题解决了，tslib的源码有问题，我把tslib的版本更新了一下就OK了。

张三 LV 6

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