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54 lines
1.6 KiB
JavaScript
54 lines
1.6 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 servo module.
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var servoModule = require("jsupm_servo");
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//Instantiate ES08A Servo module on GPIO 5
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var servo = new servoModule.ES08A(5);
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// function to initialize servo
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// timeOffset: how long after hitting "run"
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// should we start this servo instance
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// timeInterval: how frequently should this instance run after timeOffset
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// angle: the angle for this instance
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function startServo(timeOffset, timeInterval, angle)
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{
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// Start running this instance after timeOffset milliseconds
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setTimeout(function()
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{
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// run this instance every timeInterval milliseconds
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setInterval(function()
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{
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servo.setAngle(angle);
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console.log("Set angle to " + angle);
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}, timeInterval);
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}, timeOffset);
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// timeOffset tells setTimeout when
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// to execute the function specified in the first param
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// angle is passed as a param to the specified function
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}
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// start immediately, run every 3 seconds, go 0 degrees
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startServo(0, 3000, 0);
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// start in 1 second, run every 3 seconds, go 90 degrees
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startServo(1000, 3000, 90);
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// start in 2 seconds, run every 3 seconds, go 180 degrees
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startServo(2000, 3000, 180);
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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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