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The module supports the LV-MaxSonar EZ1, EZ2, EZ3 and EZ4 ultrasonic range finders. It was developed and tested on the EZ3 variant. Signed-off-by: Jon Trulson <jtrulson@ics.com> Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
60 lines
2.1 KiB
JavaScript
60 lines
2.1 KiB
JavaScript
/*jslint node:true, vars:true, bitwise:true, unparam:true */
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/*jshint unused:true */
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/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2015 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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// JavaScript example for the MaxSonar-EZ family of ultrasonic range finders
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// analog voltage, usually 3.3 or 5.0
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var MAXSONAREZ_AREF = 5.0;
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var MaxSonarEZ = require('jsupm_maxsonarez');
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// Instantiate a MaxSonar-EZ on analog pin A1, with an analog
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// reference voltage of MAXSONAREZ_AREF
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var mySonar = new MaxSonarEZ.MAXSONAREZ(1, MAXSONAREZ_AREF);
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// Every second, sample the sonar and output the distance to an
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// object in inches.
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// With the EZ3 version, the minimum and maximum ranges seemed to be
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// between 6 and 33 inches
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var myInterval = setInterval(function()
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{
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console.log("AREF: " + MAXSONAREZ_AREF +
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", distance in inches: " + mySonar.inches());
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}, 1000);
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// Print message when exiting
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process.on('SIGINT', function()
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{
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clearInterval(myInterval);
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mySonar = null;
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MaxSonarEZ.cleanUp();
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MaxSonarEZ = null;
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console.log("Exiting...");
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process.exit(0);
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});
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