1/*jslint node:true, vars:true, bitwise:true, unparam:true */ 2/*jshint unused:true */ 3/*global */ 4/* 5* Author: Zion Orent <zorent@ics.com> 6* Copyright (c) 2014 Intel Corporation. 7* 8* Permission is hereby granted, free of charge, to any person obtaining 9* a copy of this software and associated documentation files (the 10* "Software"), to deal in the Software without restriction, including 11* without limitation the rights to use, copy, modify, merge, publish, 12* distribute, sublicense, and/or sell copies of the Software, and to 13* permit persons to whom the Software is furnished to do so, subject to 14* the following conditions: 15* 16* The above copyright notice and this permission notice shall be 17* included in all copies or substantial portions of the Software. 18* 19* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 20* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 21* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 22* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 23* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 24* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 25* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 26*/ 27 28// Load analog gyro module 29var analogGyro = require('jsupm_enc03r'); 30// Instantiate a ENC03R on analog pin A0 31var myGyro = new analogGyro.ENC03R(0); 32 33var CALIBRATION_SAMPLES = 1000; 34 35console.log("Please place the sensor in a stable location,\n" + 36 "and do not move it while calibration takes place.\n" + 37 "This may take a couple of minutes."); 38 39myGyro.calibrate(CALIBRATION_SAMPLES); 40console.log("Calibration complete. Reference value: " + 41 myGyro.calibrationValue()); 42 43// Read the input and print both the raw value and the angular velocity, 44// waiting 0.1 seconds between readings 45setInterval(function() 46{ 47 var gyroVal = myGyro.value(); 48 var outputStr = "Raw value: " + gyroVal + ", " + 49 "angular velocity: " + 50 roundNum(myGyro.angularVelocity(gyroVal), 5) + " deg/s"; 51 console.log(outputStr); 52}, 100); 53 54function roundNum(num, decimalPlaces) 55{ 56 var extraNum = (1 / (Math.pow(10, decimalPlaces) * 1000)); 57 return (Math.round((num + extraNum) * (Math.pow(10, decimalPlaces))) / 58 Math.pow(10, decimalPlaces)); 59} 60 61// Print message when exiting 62process.on('SIGINT', function() 63{ 64 console.log("Exiting..."); 65 process.exit(0); 66}); 67