[SOLVED] Symlinks not working

Setup, Configuration and Use Runtime
1

Hey all,

I organized my symlinks for the use in openhab according to this tutorial:
Tutorial

but unfortunately, the symlinks are not visible in openhab, see the following screenshot:

grafik
grafik.png1920×1012 82.4 KB

My /etc/udev/rules.d/99-usb-serial.rules looks like that:

SUBSYSTEM=="tty", ATTRS{idVendor}=="03eb", ATTRS{idProduct}=="204b", SYMLINK+="ttyUSB-maxcul", GROUP="dialout", MODE="0666"
SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", ATTRS{serial}=="2701C904", SYMLINK+="ttyUSB-jeelink", GROUP="dialout", MODE="0666"
SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", ATTRS{serial}=="AI03D96I", SYMLINK+="ttyUSB-amber", GROUP="dialout", MODE="0666"
SUBSYSTEM=="tty", ATTRS{idVendor}=="0658", ATTRS{idProduct}=="0200", SYMLINK+="ttyUSB-zwave", GROUP="dialout", MODE="0666"

ls /dev/tty* result is here (meaning that the symlinks are created):

/dev/tty    /dev/tty13  /dev/tty19  /dev/tty24  /dev/tty3   /dev/tty35  /dev/tty40  /dev/tty46  /dev/tty51  /dev/tty57  /dev/tty62    /dev/ttyACM1       /dev/ttyUSB-jeelink
/dev/tty0   /dev/tty14  /dev/tty2   /dev/tty25  /dev/tty30  /dev/tty36  /dev/tty41  /dev/tty47  /dev/tty52  /dev/tty58  /dev/tty63    /dev/ttyAMA0       /dev/ttyUSB-maxcul
/dev/tty1   /dev/tty15  /dev/tty20  /dev/tty26  /dev/tty31  /dev/tty37  /dev/tty42  /dev/tty48  /dev/tty53  /dev/tty59  /dev/tty7     /dev/ttyprintk     /dev/ttyUSB-zwave
/dev/tty10  /dev/tty16  /dev/tty21  /dev/tty27  /dev/tty32  /dev/tty38  /dev/tty43  /dev/tty49  /dev/tty54  /dev/tty6   /dev/tty8     /dev/ttyUSB0
/dev/tty11  /dev/tty17  /dev/tty22  /dev/tty28  /dev/tty33  /dev/tty39  /dev/tty44  /dev/tty5   /dev/tty55  /dev/tty60  /dev/tty9     /dev/ttyUSB1
/dev/tty12  /dev/tty18  /dev/tty23  /dev/tty29  /dev/tty34  /dev/tty4   /dev/tty45  /dev/tty50  /dev/tty56  /dev/tty61  /dev/ttyACM0  /dev/ttyUSB-amber

And in /etc/default/openhab2` i created the following entry:

EXTRA_JAVA_OPTS="-Dgnu.io.rxtx.SerialPorts=/dev/ttyUSB-maxcul:/dev/ttyUSB-jeelink:/dev/ttyUSB-zwave:/dev/ttyUSB-amber"

So i dont know where there is a mistake? Any ideas?

2

no ideas here?

3

It seems that, i dont know why, the permissions of the symlinks are not correctly set, even if (see above), the /etc/udev/rules.d/99-usb-serial.rules file contains the GROUP="dialout" information.

When i run ls -al /dev/ttyACM0 i got:

crw-rw-rw- 1 root dialout 166, 0 Oct  6 18:56 /dev/ttyACM0

But when i run ls -al /dev/ttyUSB-zwave i got:

lrwxrwxrwx 1 root root 7 Oct  6 18:49 /dev/ttyUSB-zwave -> ttyACM0

Can someone tell me why the /dev/ttyUSB-zwave is not in the dialout group?

4

i found the problem.
I manually installed this binding here: [ New Binding: Wireless M-Bus / Techem heat cost allocators](New Binding: Wireless M-Bus / Techem heat cost allocators)

At the moment, i dont know why, but this binding affects my configuration of openhab, meaning that no binding did work which needed a serial port.

after having deinstalled the binding again, everything works again.

5

Any ideas for the following issue?

After having updated to the newestr OpenHab release, my simlinks are not shown anymore.
No i had to choose between the following options:

grafik

But as written above, my simlinks are as follows:

ttyUSB-maxcul
ttyUSB-jeelink
ttyUSB-amber
ttyUSB-zwave

6

no one an idea? it seems that the updated version of openhab has some issues with simlinks?

7

for those who have also problems like me, the solution is, after an update of openhab, the following file is overwritten by the openhab update routine.

/etc/default/openhab2

bring it back to the origin version, update your EXTRA_JAVA_OPTS settings and everything is ok again.

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8

EXTRA_JAVA_OPTS="-Dgnu.io.rxtx.SerialPorts=/dev/ttyUSB-amber:/dev/ttyUSB-jeelink:/dev/ttyUSB-maxcul:/dev/ttyUSB-zigbee:/dev/ttyUSB-zwave"
EXTRA_JAVA_OPTS="-Xms250m -Xmx350m"

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