Rex and Inskscape communication issue

soxso2011 · 2015-11-30 19:33:24

My computer and raspberry is pinging but html file is not opening. Did all steps using https://www.rexcontrols.com/articles/hm … spberry-pi this tutorial. But final step the HMI file is not opening in browser. All proxy disabled but still jot opening.

jaroslav_sobota · 2015-12-01 11:21:32

Please post here the output of the following commands:

uname -a

cat /etc/*-release

ps ax

What do you see when you enter the IP address of your Raspberry Pi in your browser?

soxso2011 · 2015-12-02 11:28:07

pi@raspberrypi ~ $ uname -a
Linux raspberrypi 4.1.7-v7+ #817 SMP PREEMPT Sat Sep 19 15:32:00 BST 2015 armv7l GNU/Linux
pi@raspberrypi ~ $ cat /etc/*-release
PRETTY_NAME="Raspbian GNU/Linux 8 (jessie)"
NAME="Raspbian GNU/Linux"
VERSION_ID="8"
VERSION="8 (jessie)"
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"
pi@raspberrypi ~ $ ps ax
PID TTY STAT TIME COMMAND
1 ? Ss 0:05 /sbin/init
2 ? S 0:00 [kthreadd]
3 ? S 0:00 [ksoftirqd/0]
4 ? S 0:00 [kworker/0:0]
5 ? S< 0:00 [kworker/0:0H]
6 ? S 0:00 [kworker/u8:0]
7 ? S 0:00 [rcu_preempt]
8 ? S 0:00 [rcu_sched]
9 ? S 0:00 [rcu_bh]
10 ? S 0:00 [migration/0]
11 ? S 0:00 [migration/1]
12 ? S 0:00 [ksoftirqd/1]
13 ? S 0:00 [kworker/1:0]
14 ? S< 0:00 [kworker/1:0H]
15 ? S 0:00 [migration/2]
16 ? S 0:00 [ksoftirqd/2]
17 ? S 0:00 [kworker/2:0]
18 ? S< 0:00 [kworker/2:0H]
19 ? S 0:00 [migration/3]
20 ? S 0:00 [ksoftirqd/3]
21 ? S 0:00 [kworker/3:0]
22 ? S< 0:00 [kworker/3:0H]
23 ? S< 0:00 [khelper]
24 ? S 0:00 [kdevtmpfs]
25 ? S< 0:00 [netns]
26 ? S< 0:00 [perf]
27 ? S 0:00 [khungtaskd]
28 ? S< 0:00 [writeback]
29 ? S< 0:00 [crypto]
30 ? S< 0:00 [bioset]
31 ? S< 0:00 [kblockd]
32 ? R 0:00 [kworker/1:1]
33 ? S< 0:00 [rpciod]
34 ? S 0:00 [kswapd0]
35 ? S 0:00 [fsnotify_mark]
36 ? S< 0:00 [nfsiod]
42 ? S< 0:00 [kthrotld]
43 ? S 0:00 [kworker/0:1]
44 ? S< 0:00 [VCHIQ-0]
45 ? S< 0:00 [VCHIQr-0]
46 ? S< 0:00 [VCHIQs-0]
47 ? S< 0:00 [iscsi_eh]
48 ? S< 0:00 [dwc_otg]
49 ? S< 0:00 [DWC Notificatio]
50 ? S 0:00 [kworker/u8:1]
51 ? S 0:00 [VCHIQka-0]
52 ? S< 0:00 [SMIO]
53 ? S 0:00 [mmcqd/0]
54 ? S< 0:00 [deferwq]
55 ? S 0:00 [kworker/2:1]
56 ? S 0:00 [jbd2/mmcblk0p6-]
57 ? S< 0:00 [ext4-rsv-conver]
58 ? S 0:00 [kworker/1:2]
59 ? S 0:00 [kworker/3:1]
60 ? S< 0:00 [ipv6_addrconf]
85 ? S 0:00 [kworker/0:2]
86 ? S 0:00 [kworker/u8:2]
107 ? Ss 0:00 /lib/systemd/systemd-journald
109 ? Ss 0:00 /lib/systemd/systemd-udevd
126 ? S 0:00 [kworker/2:2]
173 ? D 0:00 [w1_bus_master1]
179 ? S 0:00 [spi0]
340 ? S 0:00 [RTW_CMD_THREAD]
418 ? Ss 0:00 /usr/sbin/cron -f
419 ? Ss 0:00 /lib/systemd/systemd-logind
426 ? Ss 0:00 avahi-daemon: running [raspberrypi.local]
428 ? Ss 0:00 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
443 ? S 0:00 /usr/bin/RexWSTcp
456 ? Ss 0:00 /usr/sbin/thd --daemon --triggers /etc/triggerhappy/triggers.d/ --socket /var/run/thd.socket --pidfile /var/run/thd.pid --user nobody /dev/in
460 ? S< 0:00 [cfg80211]
466 ? Ss 0:00 /sbin/dhcpcd -q -b
470 ? S 0:00 avahi-daemon: chroot helper
495 ? Ss 0:00 /sbin/wpa_supplicant -s -B -P /run/wpa_supplicant.wlan0.pid -i wlan0 -D nl80211,wext -c /etc/wpa_supplicant/wpa_supplicant.conf
544 ? Ssl 0:00 /usr/sbin/rsyslogd -n
563 ? Ss 0:00 /usr/sbin/sshd -D
583 ? Ssl 0:00 /usr/sbin/lightdm
592 ? SLsl 0:00 RexCore -d -l /var/log/rexcore.log -p /var/run/rexcore.pid -r /rex/rexcore/exec.rex -w /rex/hmi
598 ? S 0:00 [kworker/0:3]
601 ? Ss 0:00 /usr/sbin/ntpd -p /var/run/ntpd.pid -g -u 107:112
602 ? Ssl 0:00 /usr/bin/owserver -c /etc/owfs.conf --pid-file /var/run/owfs/owserver.pid
608 ? S< 0:00 [kworker/3:1H]
611 tty7 Ss+ 0:01 /usr/bin/X :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
620 ? S 0:00 /usr/sbin/ntpd -p /var/run/ntpd.pid -g -u 107:112
622 tty1 Ss 0:00 /bin/login -f
623 ? Ss+ 0:00 /sbin/agetty --keep-baud 115200 38400 9600 ttyAMA0 vt102
639 ? Ss 0:00 /lib/systemd/systemd --user
644 ? Sl 0:00 lightdm --session-child 13 16
648 ? S 0:00 (sd-pam)
668 tty1 S+ 0:00 -bash
669 ? Ssl 0:00 /usr/bin/lxsession -s LXDE-pi -e LXDE
702 ? Ss 0:00 /usr/bin/ssh-agent /usr/bin/dbus-launch --exit-with-session x-session-manager
705 ? S 0:00 /usr/bin/dbus-launch --exit-with-session x-session-manager
706 ? Ss 0:00 /usr/bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
712 ? Sl 0:00 /usr/lib/gvfs/gvfsd
715 ? S< 0:00 [kworker/0:1H]
717 ? Sl 0:00 /usr/lib/gvfs/gvfsd-fuse /run/user/1000/gvfs -f -o big_writes
723 ? S< 0:00 [kworker/2:1H]
728 ? S 0:00 openbox --config-file /home/pi/.config/openbox/lxde-pi-rc.xml
730 ? Sl 0:00 lxpolkit
733 ? Sl 0:01 lxpanel --profile LXDE-pi
734 ? Sl 0:00 pcmanfm --desktop --profile LXDE-pi
741 ? Ss 0:00 /usr/bin/ssh-agent -s
746 ? Ssl 0:00 /usr/lib/policykit-1/polkitd --no-debug
753 ? Sl 0:00 /usr/lib/gvfs/gvfs-udisks2-volume-monitor
761 ? Ssl 0:00 /usr/lib/udisks2/udisksd --no-debug
772 ? Sl 0:00 /usr/lib/gvfs/gvfs-afc-volume-monitor
777 ? Sl 0:00 /usr/lib/gvfs/gvfs-goa-volume-monitor
781 ? Sl 0:00 /usr/lib/gvfs/gvfs-gphoto2-volume-monitor
785 ? Sl 0:00 /usr/lib/gvfs/gvfs-mtp-volume-monitor
792 ? Sl 0:00 /usr/lib/gvfs/gvfsd-trash --spawner :1.1 /org/gtk/gvfs/exec_spaw/0
795 ? Ssl 0:00 /usr/lib/menu-cache/menu-cached /tmp/.menu-cached-:0-pi
810 ? S 0:00 [jbd2/mmcblk0p3-]
811 ? S< 0:00 [ext4-rsv-conver]
855 ? S< 0:00 [kworker/1:1H]
859 ? S 0:00 [kworker/3:2]
863 ? Sl 0:00 lxterminal
864 ? S 0:00 gnome-pty-helper
865 pts/0 Ss+ 0:00 /bin/bash
873 ? Ss 0:00 sshd: pi [priv]
886 ? R 0:00 sshd: pi@pts/1
889 pts/1 Ss 0:00 -bash
902 pts/1 R+ 0:00 ps ax
pi@raspberrypi ~ $

soxso2011 · 2015-12-02 11:32:44

When I enter the ip address of my raspberry pi in the browser ( same address used for connecting with rexview and downloading the HMI) , It says " This webpage is not available"
ERR_CONNECTION_REFUSED

jaroslav_sobota · 2015-12-03 01:49:32

You are running REX on Raspbian Jessie, which is not fully tested yet.
The problem is that the lighttpd webserver is not running on your Raspberry Pi. During installation you received an error which you probably overlooked.
See this topic for more details.

soxso2011 · 2015-12-03 08:22:12

No, when I had typed sudo apt-get install rexwstcp lighttpd=1.4.31-103 lighttpd-mod-websocket, it says " lighttpd is already the newest version & lighttpd-mod-websocket is already the newest version."

Then anyways I had apt-get --purge removed lighttpd and reinstalled using "sudo apt-get install rexwstcp lighttpd=1.4.31-103 lighttpd-mod-websocket" as you said on the other topic. Then it worked fine for some time. Now after rebooting the raspberry while it was connected to the hmi, the same error in browser - connection refused.

Tried rebooting both my windows pc, raspberry, force reloaded lighttpd , downloaded the pool automation example to raspberry and tried again.

It is simply refusing to connect to HMI !!

jaroslav_sobota · 2015-12-03 16:32:34

You are right, that's because the lighttpd webserver does not start correctly after reboot. See the other topic again for a workaround.

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#1 2015-11-30 19:33:24