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      1 /*jslint node:true, vars:true, bitwise:true, unparam:true */
      2 /*jshint unused:true */
      3 /*
      4 * Author: Zion Orent <zorent (at) ics.com>
      5 * Copyright (c) 2014 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 var voltageDivider = require('jsupm_grovevdiv');
     28 // Instantiate a Grove Voltage Divider sensor on analog pin A0
     29 var myVoltageDivider = new voltageDivider.GroveVDiv(0);
     30 
     31 // collect data and output measured voltage according to the setting
     32 // of the scaling switch (3 or 10)
     33 var val, gain3val, gain10val;
     34 function getVoltageInfo()
     35 {
     36 	val = myVoltageDivider.value(100);
     37 	gain3val = myVoltageDivider.computedValue(3, val);
     38 	gain10val = myVoltageDivider.computedValue(10, val);
     39 	console.log("ADC value: " + val + " Gain 3: " + gain3val
     40 				+ "v Gain 10: " + gain10val + "v");
     41 }
     42 
     43 setInterval(getVoltageInfo, 1000);
     44 
     45 // Print message when exiting
     46 process.on('SIGINT', function()
     47 {
     48 	myVoltageDivider = null;
     49 	voltageDivider.cleanUp();
     50 	voltageDivider = null;
     51 	console.log("Exiting...");
     52 	process.exit(0);
     53 });
     54