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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 //NOT TESTED!!!
     26 public class GroveVDivSample {
     27 	private static final short gain3 = 3;
     28 	private static final short gain10 = 10;
     29 
     30 	static {
     31 		try {
     32 			System.loadLibrary("javaupm_grovevdiv");
     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 Grove Voltage Divider sensor on analog pin A0
     42 		upm_grovevdiv.GroveVDiv vDiv = new upm_grovevdiv.GroveVDiv(0);
     43 
     44 		// collect data and output measured voltage according to the setting
     45 		// of the scaling switch (3 or 10)
     46 		while (true) {
     47 			long val = vDiv.value(100);
     48 			float gain3val = vDiv.computedValue(gain3, val);
     49 			float gain10val = vDiv.computedValue(gain10, val);
     50 
     51 			System.out.println("ADC value: " + val + ", Gain 3: " + gain3val + "v, Gain 10: "
     52 					+ gain10val);
     53 
     54 			Thread.sleep(1000);
     55 		}
     56 		// ! [Interesting]
     57 	}
     58 
     59 }