1 /* 2 * Author: Stefan Andritoiu <stefan.andritoiu@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 import upm_a110x.IsrCallback; 26 27 public class A110X_intrSample { 28 29 public static int counter=0; 30 31 static { 32 try { 33 System.loadLibrary("javaupm_a110x"); 34 }catch (UnsatisfiedLinkError e) { 35 System.err.println("error in loading native library"); 36 System.exit(-1); 37 } 38 } 39 main(String[] args)40 public static void main(String[] args) throws InterruptedException { 41 //! [Interesting] 42 // Instantiate an A110X sensor on digital pin D2 43 upm_a110x.A110X hall = new upm_a110x.A110X(2); 44 45 // This example uses a user-supplied interrupt handler to count 46 // pulses that occur when a magnetic field of the correct polarity 47 // is detected. This could be used to measure the rotations per 48 // minute (RPM) of a rotor for example. 49 50 IsrCallback callback = new A110XISR(); 51 hall.installISR(callback); 52 53 while(true){ 54 System.out.println("Counter: " + counter); 55 Thread.sleep(1000); 56 } 57 //! [Interesting] 58 } 59 } 60 61 class A110XISR extends IsrCallback { A110XISR()62 public A110XISR(){ 63 super(); 64 } run()65 public void run(){ 66 A110X_intrSample.counter++; 67 } 68 }