I’ve been playing with the GPIO capabilities of the Raspberry Pi before using Python, which comes with easy GPIO access for the Raspberry Pi.<\/p>\n
Java 8 for ARM<\/strong><\/p>\n As I’m yet not very familiar with Python I got excited when Oracle accounced Java 8 for the ARM platform, so I downloaded the JDK 8 (with JavaFX) for ARM Early Access<\/a> from the Oracle website, copied it to the RPi, compiled an example app on my PC and copied the JAR to the RPi – and it runs!<\/p>\n Obviously it takes some time to start the application but it works as excepted; of course it was a very simple example and there are some limitations, especially when it comes to graphics output, but it’s a good start.<\/p>\n There is even JavaFX support in the JDK 8 which will output to RPi’s HDMI\/Video output, but that’s a topic for another posting ;)<\/p>\n Java & GPIO<\/strong><\/p>\n There is no native support for the RPi’s GPIO pins in Java, but there are two Open Source projects to get it running anyway:<\/p>\n As described on the WiringPi website you can get WiringPi via git, and then build it directly on the RPi.<\/p>\n The Pi4j website has lots of examples on how to work with the code, and from a Java developer’s perspective it is pretty straight forward to use Pi4j.<\/p>\n I’ve used some code directly from the Pi4j’s example pages, put an LED on a breadboard, connected two pins and when running the program the LED blinks! Great!<\/p>\n So, if you are planing to access GPIO via Java you should definitely take a look at WiringPi and Pi4j.<\/p>\n","protected":false},"excerpt":{"rendered":" I’ve been playing with the GPIO capabilities of the Raspberry Pi before using Python, which comes with easy GPIO access for the Raspberry Pi. Java 8 for ARM As I’m yet not very familiar with Python I got excited when … Continue reading \n