Chief Delphi - CANJaguar

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Quote:

Originally Posted by Kodiak (Post 1111683)

Yup, he is right, you having that is like pretty much trying to make two jaguars of the same variable name, and in any programming language you can't simply do that.

Just to be clear, you CAN do that in java, you're just not going to be referring to the same variable throughout the program. If every variable name had to be completely unique, you wouldn't be able to use the same variable names as any of the variables used in the classes you import. For any large scale program it would get difficult pretty quickly to keep track of what variable names were used where.

His code will compile and run as it was, it's just not going to do what he expected it to.

Quote:

Originally Posted by otherguy (Post 1112430)

True, I did not clarify correctly, I have a problem of doing that, my bad, haha

Could someone kindly tell me where you found documentation on using CAN under Java? I've searched in the "Getting Started with JAVA", "WPI Robotics Library User’s Guide", and "WPI Library Cookbook" publications, but have somehow missed it if it is in there. Went back to First Forge, but couldn't locate any additional documentation that seemed like it would point me in the right direction.

If anyone knows of an example project, that would be appreciated as well.

Thanks,
Steve

Quote:

Originally Posted by emusteve (Post 1113378)

This is the most I've ever been able to find: https://decibel.ni.com/content/docs/DOC-14865

Quote:

Originally Posted by emusteve (Post 1113378)

http://www.wbrobotics.com/javadoc/in...e-summary.html

That should also help some what.

Thanks guys, I downloaded the NI doc and will look at that tonight.

I had found the wrobotics site via Google, but as I'm new to Java, it is still a bit cryptic to my eyes. I'm wondering where they found that reference. I do wish it gave some examples. Looks like it originated at WPI, but scouring FIRST Forge turned up nada. Thanks to them for putting it up.

I'll keep watching this thread to see what success you have. Share ours as well (assuming we achieve some.)

Thanks again,
Steve

the info posted on the wrobotics site is called a JavaDoc, and it's a standard form of documentation that can be generated from JAva code automatically (as long as it'a commented properly). The JAvadocs for WPILib is distributed with the plugin package that you installed.

You can access these files locally on your machine by clicking the first logo in the bar at the top of NetBeans (Assuming that's what you're using), it should be the first link on the page that loads.

Check out some helpful guides on my teams site on:
Getting started with Java: Lecture 1, Lecture 2
JavaDocs: Intro/Setup, Use
CAN Jaguars

You're going to want to focus on the CANJaguar class.

Use is as simple as placing the following lines in the right places in your code.

Code:

import edu.wpi.first.wpilibj.CANJaguar;

CANJaguar leftMotor = new CanJaguar(12); //where 12 is the CAN ID assigned to the motor controller

leftMotor.set(x.x);    //where x.x is a value between -1.0 and 1.0 (or your joystick axis...)

Note the default mode of operation is %VBus, which is comparable to PWM, read up on our site and the NI docs to learn about the other modes of operation if that's your goal.