upm/examples/javascript/uln200xa.js

/*jslint node:true, vars:true, bitwise:true, unparam:true */
/*jshint unused:true */
/*
* Author:  Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2015 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

var Uln200xa_lib = require('jsupm_uln200xa');

// Instantiate a Stepper motor on a ULN200XA Darlington Motor Driver
// This was tested with the Grove Geared Step Motor with Driver

// Instantiate a ULN2003XA stepper object
var myUln200xa_obj = new Uln200xa_lib.ULN200XA(4096, 8, 9, 10, 11);

myUln200xa_obj.goForward = function()
{
    myUln200xa_obj.setSpeed(5); // 5 RPMs
    myUln200xa_obj.setDirection(Uln200xa_lib.ULN200XA.DIR_CW);
    console.log("Rotating 1 revolution clockwise.");
    myUln200xa_obj.stepperSteps(4096);
};

myUln200xa_obj.reverseDirection = function()
{
	console.log("Rotating 1/2 revolution counter clockwise.");
	myUln200xa_obj.setDirection(Uln200xa_lib.ULN200XA.DIR_CCW);
	myUln200xa_obj.stepperSteps(2048);
};

myUln200xa_obj.stop = function()
{
	myUln200xa_obj.release();
};

myUln200xa_obj.quit = function()
{
	myUln200xa_obj = null;
	Uln200xa_lib.cleanUp();
	Uln200xa_lib = null;
	console.log("Exiting");
	process.exit(0);
};

// Run ULN200xa driven stepper
myUln200xa_obj.goForward();
setTimeout(myUln200xa_obj.reverseDirection, 2000);
setTimeout(function()
{
	myUln200xa_obj.stop();
	myUln200xa_obj.quit();
}, 2000);