RXTX Version mismatch on Mac OSX 10.6.8

mrbunzy

RXTX Version mismatch on Mac OSX 10.6.8

in Integration and Hardware • 2 years ago

Hi all,

I'm wondering if anyone can help me with this, I've been googling but can only find advice for PC users running windows 7.

I'm running a simple sketch that take's data from an Arduino via USB. At the start of the sketch I get the following warning in the console:

WARNING: RXTX Version mismatch
Jar version = RXTX-2.2pre1
native lib Version = RXTX-2.2pre2

I've tried running a few different sketches that interface with the Arduino and they all produce this error.

That said, the sketch seems to run fine. Though I'm a bit worried that this incompatibility may produce future problems as I develop my project. Can anyone tell me how to remedy this problem on a Mac platform? Is there a simple way such as reinstall processing?

Replies(5)

Greger

Re: RXTX Version mismatch on Mac OSX 10.6.8

2 years ago

I get this on Linux as well, but things have seemed to be working okay. So I have just ignored it.

mrbunzy

Re: Re: RXTX Version mismatch on Mac OSX 10.6.8

2 years ago

Thanks Gregersn,

I've been ignoring it too, but thought I'd better ask about it. just in case it comes back to bite me in the behind.

ashleyjam..

Re: RXTX Version mismatch on Mac OSX 10.6.8

2 years ago

hey its becuase the file within processing is different to the one in the arudino library

Ae you suing the processing serial to read from the arudino or are you using the arduino firmata ?

The sketch will run 'fine' but try using opengl and some other libs and you may get errors ;-) (from experience)

2 things:

if you want them both to 'match' on mac 10.6.8 then what i did was look in the processing and then in serial library. you have RXTXcomm.jar and then within the macosx flder you have librxtxSerial.jnilib

Basically what i did was overwrite these with the ones that come with the arduino download (arduino / contents / resources) and then i got it to match. So mine now are dated 24th dec 2010 19:55 which are the same ones in the arduino-22 download.

Also you may find in Macintsh HD / library / jav / extensions that you have a diff version - if so overwrite as well

This way your system isnt finding 2 versions that dont match

As you say sketch runs but timing issues and other problems could happen

If you are using the processing serial library a quick hint - the void serialEvent (Serial myPort)

can cause other crashes with other libraries so basically just dump it in the draw or make a new void name that doesnt pass the myport in

All of teh above is what i found trying to use arduino on the mac with openGl / GlGprahics in processing and they were my solutions

The mismatch is documented on the web elsewhere

sonicarmin

Re: Re: RXTX Version mismatch on Mac OSX 10.6.8

1 year ago

Hi, I don't have a version mismatch, but the Java libraries folder was empty and I could not run serial comm with Processing at all. I saw your comment here and did just what you said, copied the two files from the arduino package into the library/java/extensions directory. Now I get this error - any idea how to proceed?

java.lang.UnsatisfiedLinkError: /Library/Java/Extensions/librxtxSerial.jnilib: no suitable image found. Did find: /Library/Java/Extensions/librxtxSerial.jnilib: no matching architecture in universal wrapper thrown while loading gnu.io.RXTXCommDriver

sonicarmin

Re: RXTX Version mismatch on Mac OSX 10.6.8

1 year ago

For those of you looking at this discussion: My problem (at least with the serial library) was that I tried to run with preferences set to 64 bit. After I changed the default to 32bit by serial libraries became stable. Still doesn't work though, now I get a new error in the line where I define the port serial object:

Stable Library

=========================================

Native lib Version = RXTX-2.1-7

Java lib Version = RXTX-2.1-7

Exception in thread "Animation Thread" java.lang.NoClassDefFoundError: processing/core/PApplet

at processing.serial.Serial.<init>(Serial.java:159)

at processing.serial.Serial.<init>(Serial.java:105)

at Scope_OOP.setup(Scope_OOP.java:48)

at processing.core.PApplet.handleDraw(PApplet.java:1881)

at processing.core.PApplet.run(PApplet.java:1803)

at java.lang.Thread.run(Thread.java:680)

Caused by: java.lang.ClassNotFoundException: processing.core.PApplet

at java.net.URLClassLoader$1.run(URLClassLoader.java:202)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at sun.misc.Launcher$ExtClassLoader.findClass(Launcher.java:229)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

... 6 more

I can't believe it, but for the first time in my adult computer life I am remotely considering to migrate a project to the Windows 7 PC....

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