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      1 /*
      2  * Author: Stefan Andritoiu <stefan.andritoiu (at) intel.com>
      3  * Copyright (c) 2015 Intel Corporation.
      4  *
      5  * Permission is hereby granted, free of charge, to any person obtaining
      6  * a copy of this software and associated documentation files (the
      7  * "Software"), to deal in the Software without restriction, including
      8  * without limitation the rights to use, copy, modify, merge, publish,
      9  * distribute, sublicense, and/or sell copies of the Software, and to
     10  * permit persons to whom the Software is furnished to do so, subject to
     11  * the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be
     14  * included in all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     21  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 
     25 public class GUVAS12DSample {
     26 	// analog voltage, usually 3.3 or 5.0
     27 	private static final float GUVAS12D_AREF = 5;
     28 	private static final int SAMPLES_PER_QUERY = 1024;
     29 
     30 	static {
     31 		try {
     32 			System.loadLibrary("javaupm_guvas12d");
     33 		} catch (UnsatisfiedLinkError e) {
     34 			System.err.println("error in loading native library");
     35 			System.exit(-1);
     36 		}
     37 	}
     38 
     39 	public static void main(String[] args) throws InterruptedException {
     40 		// ! [Interesting]
     41 		// Instantiate a GUVAS12D on analog pin A3
     42 		upm_guvas12d.GUVAS12D volts = new upm_guvas12d.GUVAS12D(3);
     43 
     44 		while (true) {
     45 			float value = volts.value(GUVAS12D_AREF, SAMPLES_PER_QUERY);
     46 
     47 			System.out.println("AREF: " + GUVAS12D_AREF
     48 					+ ", Voltage value (higher means more UV): " + value);
     49 
     50 			Thread.sleep(1000);
     51 		}
     52 		// ! [Interesting]
     53 	}
     54 
     55 }