Links from the YavaConf talk 'Foreign Function & Memory (FFM) API on Raspberry Pi'

These are the links from the Ya!vaConf virtual talk on December 4, 2025: “Java Champion Talk - How the new Foreign Function & Memory API pushes Java on Raspberry Pi to the next level”.

Talk Description

The new Foreign Function & Memory (FFM) API, available since JDK 21, promises to provide a much easier way to directly interact with memory and external libraries. The Pi4J project needs this functionality to provide access to the GPIOs of a Raspberry Pi. Thanks to the FFM API and a new plugin, Pi4J can be made a lot simpler and better!

Links Used During The Talk (and More…)

How Java evolves
Project Panama
- https://openjdk.org/projects/panama/
- Foreign-Memory Access API
- Foreign Linker API
  - https://openjdk.org/jeps/389
- Foreign Function & Memory API
- Jextract
  - https://jdk.java.net/jextract/
  - https://github.com/openjdk/jextract/blob/master/doc/GUIDE.md
- Vector API
  - https://openjdk.org/jeps/338
Java 11 versus 25 code examples
- https://www.jbang.dev/
- Memory management
  - FFMMemoryManagement.java
  - Java11MemoryManagement.java
- Pixelbuffer example
  - FFMPixelBuffer.java
  - Java11PixelBuffer.java
- Native calls
  - FFMNativeCalls.java
  - Java11NativeCalls.java
Pi4J
- https://www.pi4j.com/
- https://github.com/Pi4J/pi4j
Fixing the Raspberry Pi 5 Problem
Integrating the FFM API
Pi4J Code > FFM Plugin
- https://github.com/Pi4J/pi4j/tree/develop/plugins/pi4j-plugin-ffm
Soon available
Elecrow CrowPi
- https://www.pi4j.com/examples/crowpi/
- https://github.com/Pi4J/pi4j-example-crowpi
Code and Demo
Vaadin Code and Demo
What’s next?