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50 lines
1.4 KiB
JavaScript
50 lines
1.4 KiB
JavaScript
/*
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* Author: Zion Orent <zorent@ics.com>
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* Copyright (c) 2014 Intel Corporation.
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*
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* This program and the accompanying materials are made available under the
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* terms of the The MIT License which is available at
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* https://opensource.org/licenses/MIT.
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*
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* SPDX-License-Identifier: MIT
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*/
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// Load analog gyro module
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var analogGyro = require('jsupm_enc03r');
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// Instantiate a ENC03R on analog pin A0
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var myGyro = new analogGyro.ENC03R(0);
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var CALIBRATION_SAMPLES = 1000;
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console.log("Please place the sensor in a stable location,\n" +
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"and do not move it while calibration takes place.\n" +
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"This may take a couple of minutes.");
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myGyro.calibrate(CALIBRATION_SAMPLES);
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console.log("Calibration complete. Reference value: " +
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myGyro.calibrationValue());
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// Read the input and print both the raw value and the angular velocity,
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// waiting 0.1 seconds between readings
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setInterval(function()
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{
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myGyro.update();
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var outputStr = "Angular velocity: " +
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roundNum(myGyro.angularVelocity(), 5) + " deg/s";
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console.log(outputStr);
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}, 100);
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function roundNum(num, decimalPlaces)
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{
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var extraNum = (1 / (Math.pow(10, decimalPlaces) * 1000));
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return (Math.round((num + extraNum) * (Math.pow(10, decimalPlaces))) /
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Math.pow(10, decimalPlaces));
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}
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// Print message when exiting
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process.on('SIGINT', function()
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{
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console.log("Exiting...");
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process.exit(0);
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});
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