trouble using java lib about blink1 HOT 10 CLOSED

[blink1/libraries]$ export LD_LIBRARY_PATH=. && java -jar blink1.jar

even this produces the same

from blink1.

Hi Maza,
Take a look at the shell script:
https://github.com/todbot/blink1/blob/master/java/blink1-tool-java.sh
for an example of how to set up the various paths.

Also, if you are on Linux, you will probably need to rebuild libBlink1.so by doing a "make compile" and "make jar" in blink1/java

from blink1.

Hey,

Even the script does the same thing before and after rebuilding the so. :(

On 1 Feb 2013 19:51, "Tod E. Kurt" [email protected] wrote:

Hi Maza,
Take a look at the shell script:
https://github.com/todbot/blink1/blob/master/java/blink1-tool-java.sh
for an example of how to set up the various paths.

Also, if you are on Linux, you will probably need to rebuild libBlink1.so
by doing a "make compile" and "make jar" in blink1/java

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/40#issuecomment-13010925.

from blink1.

The Java wrapper under Linux hasn't been tested very extensively. We would appreciate any insight from people who have experience with Java on Linux.

from blink1.

I'll happily help once we solve this :)

Marton Meszaros
+447523539825
www.meza.hu
skype: vsb-meza

(The email has been sent from my phone. I am on the go, so my reply time
may vary.)
On 1 Feb 2013 21:21, "Tod E. Kurt" [email protected] wrote:

The Java wrapper under Linux hasn't been tested very extensively. We would
appreciate any insight from people who have experience with Java on Linux.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/40#issuecomment-13012189.

from blink1.

Hi,
I've found a way to get this working:

1. cd blink1/commandline/hidapi/libusb
2. make -f Makefile.linux
3. copy the newly created libhidapi-libusb.so to your lib dir
4. export LD_LIBRARY_PATH=
5. export LD_PRELOAD=/libhidapi-libusb.so
6. run you java program

It's just a workaround and hopefully not needed once we figure how it's done the right way, but it works.

HTH,

Fred

from blink1.

Thanks, Fred, this is extremely useful.
I haven't had to use LD_PRELOAD in like a decade, I forget how it's different from LD_LIBRARY_PATH

Which distro of Linux did you do this on?

from blink1.

I updated the Java/Processing library zip bundle at:
http://thingm.com/blink1/downloads/blink1-java-processing-lib.zip
that should now out-of-the box for Linux.

If you are using this directly from java, just point your LD_LIBRARY_PATH and to the unzipped directory and add the blink1.jar to your jar path. On the command line, this looks something like:

unzip blink1-java-processing-lib.zip
export BLINK1LIB=`pwd`/blink1-java-processing-lib/blink1/library
java -Djava.awt.headless=true -Djava.library.path=${BLINK1LIB} ${BLINK1LIB}/blink1.jar MyTestClass

from blink1.

Hi, Tod. The new Java/Processing library zip worked for me. Thank you.

from blink1.

I'm still running Kubuntu 10.04.04 LTS.

from blink1.