88 lines
3.2 KiB
Java
88 lines
3.2 KiB
Java
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/*
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* Author: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
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* Copyright (c) 2018 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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import mraa.Led;
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import mraa.Platform;
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import mraa.mraa;
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public class Up2Leds {
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static {
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try {
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System.loadLibrary("mraajava");
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} catch (UnsatisfiedLinkError e) {
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System.err.println( "Native code library failed to load."
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+ " See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" + e);
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System.exit(1);
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}
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}
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// Define led names and min/max brightness
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final static String[] ledNames = {"red", "green", "yellow", "blue"};
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final static int minBrightness = 0;
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final static int maxBrightness = 255;
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public static void main(String argv[]) throws InterruptedException {
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// Perform a basic platform and version check
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if (mraa.getPlatformType() != Platform.INTEL_UP2) {
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System.out.println("This example is meant for the UP Squared board.");
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System.out.println("Running it on different platforms will likely require code changes!");
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}
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if (mraa.getVersion().compareTo("v1.9.0") < 0) {
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System.out.println("You need MRAA version 1.9.0 or newer to run this sample!");
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System.exit(1);
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}
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// Define and initialize our LEDs
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Led[] leds = new Led[ledNames.length];
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for (int i = 0; i < ledNames.length; i++) {
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leds[i] = new Led(ledNames[i]);
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}
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// Add a hook for handling keyboard interrupts and cleanup
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Runtime.getRuntime().addShutdownHook(new Thread()
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{
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@Override
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public void run()
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{
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System.out.println("Exiting...");
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for (Led led : leds) {
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led.setBrightness(minBrightness);
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}
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}
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});
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// Main loop
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while (!Thread.interrupted()) {
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for (Led led : leds) {
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led.setBrightness(maxBrightness);
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Thread.sleep(200);
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led.setBrightness(minBrightness);
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}
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Thread.sleep(200);
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}
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}
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}
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