Lejos on lion osx

[ojtwist]

Hello

I have lion osx installed on my mac and i want to use my mac to develop on lejos. I searched a lot for a decent install guide but i couldn't find one. So i tried other tutorials online but it won't work. I first installed everything from the cd i also installed the phantom driver. I did this tutorial : http://www.sjefdesign.nl/?p=651 . But when i did nxjbrowse -u . i got this error :

Exception in thread "main" java.lang.NoClassDefFoundError: lejos/pc/tools/NXJBrowser
Caused by: java.lang.ClassNotFoundException: lejos.pc.tools.NXJBrowser
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

Which is basically the same error i get when the device is not connected (But it is ...).

I also installed the plugin in eclips (32-bit) and then tried to flash it and i got this error

Code: Select all

flashing the firmware failed
java.lang.RuntimeException: magic string not found
See Eclipse error log for detailed stack trace.

.

I'm out of options... can someone help me ?

[Shawn]

see http://lejos.sourceforge.net/nxt/nxj/tutorial/Preliminaries/GettingStartedMac.htm and make sure you have the .9 version

[ojtwist]

I changed my lejos version to 9. ... But i have no idea how to check if my JRE and JDK are 32 or 64 bit. Any tips on that ?

[Shawn]

I changed my lejos version to 9. ... But i have no idea how to check if my JRE and JDK are 32 or 64 bit. Any tips on that ?

On Lion you will have both.

The -d32 flags are set in lejos scripts, so 32 bit will be used as desired.

The easiest way to install .9 is just to give the scripts execute permissions (see the tutorial link for more info if you need it) and cd to the /bin dir in a shell. The script should set up the paths for itself.

The plugin, however, is not aware of what to do and so keep the following in mind:

1) To flash via the plugin, OSX users must use 32 bit Eclipse

2) 32 bit AND 64 bit Eclipse both support Bluetooth/USB connections
but the user must:
EITHER

specify -d32 in the Default VM Arguments
[Eclipse --> preferences --> Java --> installed JREs --> select the JRE
--> edit --> add -d32 to Default VM Arguments]

OR

specify -d32 in the
run configuration for each program that connects to your NXT.

Shawn