Java to fly data from Android to ROS of Jetson Nano

Notes that install ROS on Jetson Nano and skip data from Andorid App (java)

table of contents


Download android_core

https://github.com/rosjava/android_core

Building extension classes

Java class Reference data before compilation https://github.com/rosjava/rosjava_core

Add an extension class and call it in main

Actual machine installation

Direct installation via USB

Check receipt at Jetson Nano


Start-up
roscore

List topics
rostopic list

List nodes
rosnode list

Monitor topics
rostopic echo /chatter

http://wiki.ros.org/ja/ROS/Tutorials/UnderstandingTopics

Digression

I tried to rewrite the class of rosjava_core and use it, but I gave up because the error could not be resolved even with gradlew build. ..

Reference site

About android_core

android_core — android_core 0.1.0 documentation http://rosjava.github.io/android_core/latest/

Building A ROS Android App http://wiki.ros.org/ApplicationsPlatform/Clients/Android/Tutorials/Getting%20Started

How to build a simple rosjava package successfully- - ROS Answers- Open Source Q&A Forum https://answers.ros.org/question/41455/how-to-build-a-simple-rosjava-package-successfully/

About building rosjava_core

About the standard library for cross-compiling Java versions (for example, when compiling for Java 7 with JDK 8) https://vcs.hatenablog.com/entry/java/cross-compile-bootclasspath

rosjava_core 0.1.6 documentation http://rosjava.github.io/rosjava_core/latest/building.html

Command-Line Interface https://docs.gradle.org/4.10.2/userguide/command_line_interface.html#sec:command_line_warnings

API Help http://rosjava.github.io/rosjava_core/hydro/javadoc/index.html?overview-summary.html

Regarding the installation of JS WebSocket server in ROS

Record with RosJava https://qiita.com/iwata-n/items/989bed3acc21ffb28521

Try to operate ROS Topic with Javascript using rosbridge and roslibjs https://naonaorange.hatenablog.com/entry/2019/02/12/202800

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