A Java library for accessing GPIO ports on Intel Edison, Galileo and other devices based on librmaa
##Important Note## The current version of this library is only a design study. Most of the functions are completely untested and I do not expect them to work. It may be a starting point for others using the Intel Edison or similar devices from Java. Currently is seems that no other libraries are availble.
mraa4j is a thin layer on top of Intel's librmraa C/C++ library using Java Native interface. Please follow the documentation from Intel to get an introduction to the API. The Java API mainly follows the Intel documentation with a few adaptions to make it more Java like. With this library it is possible to access the GPIO ports from within the Java virtual machine.
Use maven to build the library. Add the resulting jar to your project. An additional dependency is the Java Native Access (JNA) library. jna-4.1.0.jar. You can build a jar including all dependencies with mvn assembly:assembly.
Here is an example to use Analog IO (AIO):
public static void mainAnalogIO(String[] args) {
System.out.println("Mraa4j");
Mraa4j mraa = Mraa4j.getInstance();
System.out.println("Mraa4j initialzed, state is: " + mraa.getInitState());
PlatformT platformType = mraa.getPlatformType();
System.out.println("Platform type is: " + platformType);
String version = mraa.getPlatformVersion();
System.out.println("Platform version is: " + version);
try {
AnalogIO aio = new AnalogIO(0); // AIO pin 0, GPIO pin 14
for (int i=0; i<10; i++) {
int value = aio.read();
System.out.println("Sensor light value is: " + value);
Thread.sleep(3000);
}
} catch (MraaException e) {
System.out.println("Failed to initialize AnalogIO");
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}The MIT License (MIT)
Copyright (c) 2015 https://github.com/jensix/mraa4j
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