Template project with Gradle

Why

Test a new technology is always a bit tedious and it requires an amount of time. So, this project try to reduce the curve of learning of any new user with EV3Dev-lang-java.

Prerequisites

The Prerequisites to use this project are:

• Your MINDSTORMS Brick needs to have installed latest Debian Stretch version. https://www.ev3dev.org/docs/getting-started/
• To increase the EV3 CPU Speed, read the following article: https://lechnology.com/2018/06/overclocking-lego-mindstorms-ev3-part-2/
• Your MINDSTORMS Brick needs to be connected to the same LAN than your laptop. http://www.ev3dev.org/docs/getting-started/#step-5-set-up-a-network-connection

Note: Update the EV3Dev kernel https://www.ev3dev.org/docs/tutorials/upgrading-ev3dev/

sudo apt-get update
sudo apt-get install linux-image-ev3dev-ev3

Once you have all steps done, continue with the next section.

Getting Started

This repository stores a template project about EV3Dev-lang-java. Once you download in your computer the project, open your favourite Java IDE ( Eclipse or IntelliJ) to import this Gradle project. The project includes latest dependencies and an example ready to be deployed on your Robot using the core library from EV3Dev-lang-java.

The project includes some tasks to reduce the time to deploy on your robot.

Review the IP of your Brick and update the file ./config.gradle:

remotes {
    ev3dev {
        host = '192.168.1.180'
        user = 'robot'
        password = 'maker'
    }
}

EV3Dev-lang-java

The tasks associated to deploy on your Robot are:

• testConnection (Test the connection with your Brick)
• deploy (The project deliver a FatJar to your Brick)
• remoteRun (Execute a Jar deployed on your Brick)
• deployAndRun (Deploy & Execute from your Computer the program that you configured on the file: MANIFEST.MF)
• ev3devInfo (Get technical information about your EV3 Brick)
• removePreviousJar (Remove current jar remotely)
• remoteBrickRun (If your program is going to use some EV3 Actuator like LCD, Buttons, use this task to execute the program)
• remoteRun (Execute your jar remotely)
• remoteRunClassVerbose (Execute your jar and show JVM info)
• remoteProfilingRun (Execute your jar configured for Profiling activities)
• deployAndBrickRun (Deploy & Execute your program with Brickrun)
• deployAndProfilingRun (Deploy & Execute your jar configured for Profiling activities)
• pkillJava (Kill Java processes in your Brick)

You can use the Java IDE to launch the task or execute them from the terminal

./gradlew deployAndBrickRun

Javadocs

The project has the following technical documentation

http://ev3dev-lang-java.github.io/docs/api/latest/index.html

Examples

Exist several examples ready to use here:

https://github.com/ev3dev-lang-java/examples

Issues

If you have any problem or doubt, use the main project.

https://github.com/ev3dev-lang-java/ev3dev-lang-java/issues