1 /* 2 * Author: Dan Yocom <dan.yocom (at) intel.com> 3 * Copyright (c) 2014 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 var m = require('mraa'); //require mraa 26 console.log('MRAA Version: ' + m.getVersion()); //write the mraa version to the console 27 28 var myLed = new m.Gpio(13); //LED hooked up to digital pin 13 (or built in pin on Galileo Gen1 & Gen2) 29 myLed.dir(m.DIR_OUT); //set the gpio direction to output 30 var ledState = true; //Boolean to hold the state of Led 31 32 function periodicActivity() 33 { 34 myLed.write(ledState?1:0); //if ledState is true then write a '1' (high) otherwise write a '0' (low) 35 ledState = !ledState; //invert the ledState 36 setTimeout(periodicActivity,1000); //call the indicated function after 1 second (1000 milliseconds) 37 } 38 39 periodicActivity(); //call the periodicActivity function 40 41
