Off Board Vision Processing in Java - java.lang.UnsatisfiedLinkError

[Kevin-OConnor]

From @StaleyRobotics on January 30, 2017 21:28

ubuntu@tegra-ubuntu:~/Downloads/Java/output$ sh runCameraVision Exception in thread "main" java.lang.UnsatisfiedLinkError: /home/ubuntu/Downloads/Java/output/libopencv_java310.so: /home/ubuntu/Downloads/Java/output/libopencv_java310.so: wrong ELF class: ELFCLASS32 (Possible cause: architecture word width mismatch) at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941) at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1857) at java.lang.Runtime.loadLibrary0(Runtime.java:870) at java.lang.System.loadLibrary(System.java:1122) at Main.main(Main.java:12) I am getting this error after successfully running ./gradlew build

My team is new to the Jetson and our end goal is to do our vision processing useing Open CV in Python 2.7 on the Jetson TX1. I am also having problems connecting the Jetson over Ethernet to view Network Tables.

Copied from original issue: wpilibsuite/allwpilib#475

[ThadHouse]

The builds provided for the Java armhf build system do not work on the TX1. I didn't realize they had switched the TX1 to be AArch64 instead of armhf. I will look into getting builds, but I do not know when I will be able to get them. I will update the docs for now, but for now you will need to build all the native libraries manually.