bulk_transfer

Bulk Transfer

This sample shows how to find a device, open it and transfer data from and to bulk endpoints.

Prerequisites

• Java 20
• Apache Maven
• 64-bit operating system (Windows, macOS, Linux)
• A USB device with bulk IN and OUT endpoints (e.g. the test device, see https://github.com/manuelbl/JavaDoesUSB/tree/main/test-devices/loopback-stm32)

How to run

Install Java 20

Check that Java 20 is installed:

$ java -version

If not, download and install it, e.g. from Azul.

Install Maven

Check that Maven is installed:

$ mvn -version

If it is not present, install it, typically using package manager like Homebrew on macOS, Chocolately on Windows and apt on Linux.

Run the sample

$ cd JavaDoesUSB/examples/bulk_transfer
$ mvn compile exec:exec
[INFO] Scanning for projects...
[INFO] 
[INFO] --------------< net.codecrete.usb.examples:bulk-transfer >--------------
[INFO] Building bulk-transfer 0.5.1
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-resources-plugin:3.0.2:resources (default-resources) @ bulk-transfer ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /Users/me/Documents/JavaDoesUSB/examples/bulk_transfer/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) @ bulk-transfer ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to /Users/me/Documents/JavaDoesUSB/examples/bulk_transfer/target/classes
[INFO] 
[INFO] --- exec-maven-plugin:3.1.0:exec (default-cli) @ bulk-transfer ---
6 bytes sent.
6 bytes received.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  1.259 s
[INFO] Finished at: 2023-03-23T14:10:17+01:00
[INFO] ------------------------------------------------------------------------