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75 lines
1.7 KiB
JavaScript
75 lines
1.7 KiB
JavaScript
/*
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* Author: Zion Orent <zorent@ics.com>
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* Copyright (c) 2015 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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function exit()
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{
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console.log("Exiting");
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myMotorShield_obj = null;
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if (MotorShield_lib)
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{
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MotorShield_lib.cleanUp();
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MotorShield_lib = null;
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}
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process.exit(0);
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}
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var MotorShield_lib = require('jsupm_adafruitms1438');
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/* Import header values */
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var I2CBus = MotorShield_lib.ADAFRUITMS1438_I2C_BUS;
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var I2CAddr = MotorShield_lib.ADAFRUITMS1438_DEFAULT_I2C_ADDR;
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var M3motor = MotorShield_lib.AdafruitMS1438.MOTOR_M3;
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var MotorDirCW = MotorShield_lib.AdafruitMS1438.DIR_CW;
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var MotorDirCCW = MotorShield_lib.AdafruitMS1438.DIR_CCW;
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// Instantiate an Adafruit MS 1438 on I2C bus 0
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var myMotorShield_obj = new MotorShield_lib.AdafruitMS1438(I2CBus, I2CAddr);
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// Setup for use with a DC motor connected to the M3 port
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// set a PWM period of 50Hz
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myMotorShield_obj.setPWMPeriod(50);
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// disable first, to be safe
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myMotorShield_obj.disableMotor(M3motor);
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// set speed at 50%
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myMotorShield_obj.setMotorSpeed(M3motor, 50);
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myMotorShield_obj.setMotorDirection(M3motor, MotorDirCW);
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process.stdout.write("Spin M3 at half speed for 3 seconds, ");
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console.log("then reverse for 3 seconds.");
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myMotorShield_obj.enableMotor(M3motor);
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setTimeout(function()
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{
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console.log("Reversing M3");
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myMotorShield_obj.setMotorDirection(M3motor, MotorDirCCW);
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}, 3000);
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setTimeout(function()
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{
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console.log("Stopping M3");
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myMotorShield_obj.disableMotor(M3motor);
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exit();
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}, 6000);
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process.on('SIGINT', function()
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{
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exit();
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});
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