1/*jslint node:true, vars:true, bitwise:true, unparam:true */ 2/*jshint unused:true */ 3/* 4* Author: Jon Trulson <jtrulson@ics.com> 5* Copyright (c) 2015 Intel Corporation. 6* 7* Permission is hereby granted, free of charge, to any person obtaining 8* a copy of this software and associated documentation files (the 9* "Software"), to deal in the Software without restriction, including 10* without limitation the rights to use, copy, modify, merge, publish, 11* distribute, sublicense, and/or sell copies of the Software, and to 12* permit persons to whom the Software is furnished to do so, subject to 13* the following conditions: 14* 15* The above copyright notice and this permission notice shall be 16* included in all copies or substantial portions of the Software. 17* 18* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 21* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 22* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 23* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 24* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25*/ 26 27// JavaScript example for the MaxSonar-EZ family of ultrasonic range finders 28 29// analog voltage, usually 3.3 or 5.0 30var MAXSONAREZ_AREF = 5.0; 31 32var MaxSonarEZ = require('jsupm_maxsonarez'); 33 34// Instantiate a MaxSonar-EZ on analog pin A1, with an analog 35// reference voltage of MAXSONAREZ_AREF 36var mySonar = new MaxSonarEZ.MAXSONAREZ(1, MAXSONAREZ_AREF); 37 38// Every second, sample the sonar and output the distance to an 39// object in inches. 40 41// With the EZ3 version, the minimum and maximum ranges seemed to be 42// between 6 and 33 inches 43 44var myInterval = setInterval(function() 45{ 46 console.log("AREF: " + MAXSONAREZ_AREF + 47 ", distance in inches: " + mySonar.inches()); 48}, 1000); 49 50// Print message when exiting 51process.on('SIGINT', function() 52{ 53 clearInterval(myInterval); 54 mySonar = null; 55 MaxSonarEZ.cleanUp(); 56 MaxSonarEZ = null; 57 console.log("Exiting..."); 58 process.exit(0); 59}); 60