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Unread 31-01-2010, 11:16
davidthefat davidthefat is offline
Alumni
AKA: David Yoon
FRC #0589 (Falkons)
Team Role: Alumni
 
Join Date: Jan 2011
Rookie Year: 2010
Location: California
Posts: 792
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Re: Calling Out All Programmers

Quote:
Originally Posted by StevenB View Post
From talking with several of the people who wrote the C++ and Java libraries (WPILib and WPILibJ), the Java libraries are basically wrappers around the C++ code. If you look through the documentation, you'll see that most things are exactly identical, with the exception of capitalization changes to match the Java naming convention.

Java does run slower than C++ on the CRIO. It's running the Squawk JVM, which is optimized for small devices, and doesn't include all the speed improvements that normal desktop Java provides. That said, the speed difference is not going to matter, unless you're doing something really complex and esoteric. The FPGA and C/C++ libraries do nearly all of the serious computational work, from handling encoder pulses to doing image processing.

Personally, I'm a longtime C/C++ programmer and I'm comfortable with LabVIEW, but I've been converted to Java. The whole software stack is open-source, and installing NetBeans with the FRC extensions on my Linux machine was a breeze. Downloading was simple and straightforward; we spent hours last year just trying to get the CRIO to connect to WRW.
funny thing, my mentor and I spend like 3 hours trying to find the demo code for the java... We were looking all in the wrong places LOL