Serial Bridge Gateway(/dev/ttyUSB0) Error

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1

Hello

I have followed all the procedure to run an openHAB version 2.5(stable runtime) server in ubuntu(manual installation), its working fine in ubuntu 16.04.

I am using xbee binding to communicate with hardware through “/dev/ttyUSB0” port, it’s working fine in ubuntu 16.04.

Note: As suggested by Kai Kruzer I have removed RXTX JAR from classpath its working fine in ubuntu 16.04.

Now I am trying to run same server in ubuntu 18.04 I am getting error like below

java.lang.NoClassDefFoundError: Could not initialize class gnu.io.RXTXCommDriver thrown while loading gnu.io.RXTXCommDriver
com.digi.xbee.api.exceptions.InvalidInterfaceException: No such port: /dev/ttyUSB0
at com.digi.xbee.api.connection.serial.SerialPortRxTx.open(SerialPortRxTx.java:166)
at com.digi.xbee.api.XBeeDevice.open(XBeeDevice.java:199)
at org.openhab.binding.snavxbee2.handler.SNAVXbee2BridgeHandler.initialize(SNAVXbee2BridgeHandler.java:490)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.smarthome.core.internal.common.AbstractInvocationHandler.invokeDirect(AbstractInvocationHandler.java:152)
at org.eclipse.smarthome.core.internal.common.Invocation.call(Invocation.java:52)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: gnu.io.NoSuchPortException…

note: As suggest I have installed "RXTX Libray" using below command

      sudo apt-get install librxtx.java

Then I have added RXTXComm.jar and rxtx-2.2.2.jar to classpath in MANIFEST.MF, still no use.

Also I have copy/paste RXTXComm.jar and rxtx-2.2.2.jar into addons folder then also I am getting the same error.

Note: Also I have tried all versions of "RXTX" jar still getting same error.


Please help me out to resolve this issue.

Thank you
2

dose openhab user have permission to use port?

3

does the device /dev/ttyUSB0 exist ?

4

When I was running a native install of OH in 18.04 and up, serial stick were assigned to dev locations of /dev/ttyACM*.

5

that’s also the case for 16.04 for me.

6

@Wolfgang_S thanks for the reply,

Yes, port/dev/ttyUSB0 exists.

7

Hi denominator, thanks for reply

yes openhab have the permission to use USB port, it’s working fine in ubuntu 16.04

8

Have you added openHAB to the dialout and tty group?

id -Gn openhab

9

Hi @denominator thanks for the reply yes it is added to dialout group.

10

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