Re: webcamd based touchscreen problem on Pi3

On Thu, Mar 08, 2018 at 09:08:49PM +0100, Bernd Walter wrote:
> On Thu, Mar 08, 2018 at 08:11:31PM +0100, Bernd Walter wrote:
> > This is what I have right now:
> > [20]sa# cat /etc/X11/xorg.conf 
> > 
> > Section "InputDevice"
> >         Identifier      "Touchscreen"
> >         Driver          "evdev"
> >         Option          "Device" "/dev/input/event0"
> > EndSection
> > 
> > Section "ServerLayout"
> >         Identifier      "MyLayout"
> >         InputDevice     "Touchscreen"
> > EndSection
> > 
> > 
> > Unfortunately now I face the next problem.
> > 
> > [112753.535] (II) Using input driver 'evdev' for 'evdev touchscreen'
> > [112753.536] (**) evdev touchscreen: always reports core events
> > [112753.536] (**) evdev: evdev touchscreen: Device: "/dev/input/event0"
> > [112753.598] (--) evdev: evdev touchscreen: Vendor 0xeef Product 0x5
> > [112753.598] (--) evdev: evdev touchscreen: Found absolute axes
> > [112753.598] (--) evdev: evdev touchscreen: Found absolute multitouch axes
> > [112753.598] (II) evdev: evdev touchscreen: No buttons found, faking one.
> > [112753.598] (--) evdev: evdev touchscreen: Found x and y absolute axes
> > [112753.598] (--) evdev: evdev touchscreen: Found absolute touchscreen
> > [112753.598] (II) evdev: evdev touchscreen: Configuring as touchscreen
> > [112753.598] (**) evdev: evdev touchscreen: YAxisMapping: buttons 4 and 5
> > [112753.598] (**) evdev: evdev touchscreen: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
> > [112753.598] (II) XINPUT: Adding extended input device "evdev touchscreen" (type: TOUCHSCREEN, id 6)
> > [112753.599] (II) evdev: evdev touchscreen: initialized for absolute axes.
> > [112753.600] (**) evdev touchscreen: (accel) keeping acceleration scheme 1
> > [112753.600] (**) evdev touchscreen: (accel) acceleration profile 0
> > [112753.600] (**) evdev touchscreen: (accel) acceleration factor: 2.000
> > [112753.600] (**) evdev touchscreen: (accel) acceleration threshold: 4
> > [112753.601] (WW) fcntl(6, F_SETOWN): Invalid argument
> > 
> > [26]sa-moeller> xinput
> >  Virtual core pointer                         id=2    [master pointer  (3)]
> >     Virtual core XTEST pointer               id=4    [slave  pointer  (2)]
> >     Touchscreen                              id=6    [slave  pointer  (2)]
> >     sysmouse                                 id=8    [slave  pointer  (2)]
> >  Virtual core keyboard                        id=3    [master keyboard (2)]
> >      Virtual core XTEST keyboard              id=5    [slave  keyboard (3)]
> >      kbdmux                                   id=7    [slave  keyboard (3)]
> > 
> > Everything looks good so far, at least in my eyes.
> > Well - wheel emulation and such sounds a bit strange, as if it is handled
> > as a touchpad and not like a touchscreen.
> > But it says type touchscreen, so I assume that's ok.
> > However, I get no touch events.
> > I've started xev fullscreen and still nothing.
> > 
> > Somewhere else I've read that /dev/input/event0 should deliver something
> > if read and a touch happens, but this is not the case for me.
> > 
> > Any ideas how I can debug this thing?
> > There was a reference somewhere about a commandline programm to run against
> > an evdev, but I can't find it anymore.
> 
> xinput test delivers nothing on the touchscreen.
> 
> Neither evtest nor evdev-dump compiles because they are both missing
> linux include files at some point.
> https://cgit.freedesktop.org/~whot/evtest/
> [48]sa> make
> make  all-am
> cc -DHAVE_CONFIG_H -I.      -g -O2 -MT evtest.o -MD -MP -MF .deps/evtest.Tpo -c -o evtest.o evtest.c
> evtest.c:46:10: fatal error: 'linux/version.h' file not found
> #include <linux/version.h>
>          ^~~~~~~~~~~~~~~~~
> 1 error generated.
> *** Error code 1
> 
> Stop.
> make[1]: stopped in /home/ticso/evtest
> *** Error code 1
> 
> Stop.
> make: stopped in /home/ticso/evtest
> Exit 1
> 
> https://github.com/gonzoua/evdev-dump/tree/freebsd
> ...
> checking for unistd.h... yes
> checking linux/input.h usability... no
> checking linux/input.h presence... no
> checking for linux/input.h... no
> checking for /usr/include/linux/input.h... no
> configure: error: /usr/include/linux/input.h not found
> 4.765u 3.954s 0:08.64 100.8%    31397+2201k 0+27io 0pf+0w
> Exit 1
> 
> The touchscreen itself should be functional as it has a touch area outside
> the display, which is interpreted by the USB controller to change the
> backlight.
> The exact same display also worked fine on Raspbian.

This is with webcamd compiled with debug support.

[18]sa# /usr/local/sbin/webcamd -d ugen0.5
Linux video capture interface: v2.00
IR NEC protocol handler initialized
IR RC5(x/sz) protocol handler initialized
IR RC6 protocol handler initialized
IR JVC protocol handler initialized
IR Sony protocol handler initialized
IR SANYO protocol handler initialized
IR LIRC bridge handler initialized
IR XMP protocol handler initialized
b2c2-flexcop: B2C2 FlexcopII/II(b)/III digital TV receiver chip loaded successfully
USB Video Class driver (1.1.1)
cpia2: V4L-Driver for Vision CPiA2 based cameras v3.0.1
pvrusb2: V4L in-tree version:Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner
pvrusb2: Debug mask is 31 (0x1f)
USBVision USB Video Device Driver for Linux : 0.9.11
Attached to ugen0.5[0]
INFO: 0003:0EEF:0005.0001: input: USB HID v1.10 Mouse [BYZHYYZHY By ZH851] on usb-/dev/usb-/dev/usb/input0

DBG: 0003:0EEF:0005.0001: Kicking head 1 tail 0
Creating /dev/input/event0

I really think that it has some problems with the controller.
When I run webcamd against the mouse I get some kind data from the
evdev.
Well - I had to reboot after testing with the mouse, but probably
it was disabled by default for a reason.
So my assumption is that I have to look up my problem somewhere between
webcamd and the USB device.

-- 
B.Walter <bernd_at_bwct.de> http://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.