Help Robot Vision

Technical Java
1

Been working on this problem for the last few days and I am not able to compile this. Any help would be much appreciated. Please find the source code here

In the link, I have the example file that I got by following the instructions on the control system web page for FRC 2019 to get our vision working using a coprocessor. Following the instruction on the read me page and I am still not able to get it going. I am using visual studio code with the WPI extension to compile this.

The First error that I ran into was "* What went wrong: Could not determine java version from ‘11.0.1’ " after a lot of troubleshooting i figured out the issue was with Gradle and I had to update it to at least 4.7 to fix it.

Once I fixed the Gradle version error by updating my gradle, the next error was " *** What went wrong: Could not create service of type ScriptPluginFactory using BuildScopeServices.createScriptPluginFactory().> Could not create service of type PluginResolutionStrategyInternal using BuildScopeServices.createPluginResolutionStrategy().** " with some more troubleshooting i fixed this by downloading java JDK 10 and reconfiguring to compile with Java 10 instead of Java 11. After downgrading to Java 10 now I get “* What went wrong: Execution failed for task ‘:compileJava’. > Compilation failed; see the compiler error output for details.”. And I had no idea where to find the compiler output.

Thanks in advance for your help

2

That vision sample is really old. Where did you find the link on screensteps to it (so we can remove the link)? What coprocessor are you trying to use? If it’s the Raspberry Pi, please see this screensteps page.

3

hey @Peter_Johnson ,

Yes, we are trying to use the RaspberryPi for our co processor. I followed the steps in the example and successfully launched the vision server on our pi. I found the program in the applications page of the http://FRCVision.local. The sample being very old explains why Gradle was still at 3.3 and why I am getting all these weird issues.

4

Great, glad you figured it out. Keep your eyes peeled for the 2019.2.1 release, which will have some nice updates and change a couple of minor things in the Java example.

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