1/*jslint node:true, vars:true, bitwise:true, unparam:true */ 2/*jshint unused:true */ 3/* 4* Author: Zion Orent <zorent@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 27var electromagnet_lib = require("jsupm_groveelectromagnet"); 28// The was tested with the Grove Electromagnetic Module 29// Instantiate a Grove Electromagnet on digital pin D2 30var electromagnet_obj = new electromagnet_lib.GroveElectromagnet(2); 31console.log("Starting up magnet...."); 32electromagnet_obj.off(); 33 34var magnetState = false; 35 36// Turn magnet on and off every 5 seconds 37var myInterval = setInterval(function() 38{ 39 magnetState = !magnetState; 40 if (magnetState) 41 electromagnet_obj.on(); 42 else 43 electromagnet_obj.off(); 44 console.log("Turning magnet " + ((magnetState) ? "on" : "off")); 45}, 5000); 46 47// When exiting: clear interval, turn off magnet, run memory cleanup, and print message 48process.on('SIGINT', function() 49{ 50 clearInterval(myInterval); 51 electromagnet_obj.off(); 52 electromagnet_obj = null; 53 electromagnet_lib.cleanUp(); 54 electromagnet_lib = null; 55 console.log("Exiting..."); 56 process.exit(0); 57}); 58