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      1 /*jslint node:true, vars:true, bitwise:true, unparam:true */
      2 /*jshint unused:true */
      3 /*
      4 * Author:  Jon Trulson <jtrulson (at) ics.com>
      5 * Copyright (c) 2015 Intel Corporation.
      6 *
      7 * Permission is hereby granted, free of charge, to any person obtaining
      8 * a copy of this software and associated documentation files (the
      9 * "Software"), to deal in the Software without restriction, including
     10 * without limitation the rights to use, copy, modify, merge, publish,
     11 * distribute, sublicense, and/or sell copies of the Software, and to
     12 * permit persons to whom the Software is furnished to do so, subject to
     13 * the following conditions:
     14 *
     15 * The above copyright notice and this permission notice shall be
     16 * included in all copies or substantial portions of the Software.
     17 *
     18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     21 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25 */
     26 
     27 var Uln200xa_lib = require('jsupm_uln200xa');
     28 
     29 // Instantiate a Stepper motor on a ULN200XA Darlington Motor Driver
     30 // This was tested with the Grove Geared Step Motor with Driver
     31 
     32 // Instantiate a ULN2003XA stepper object
     33 var myUln200xa_obj = new Uln200xa_lib.ULN200XA(4096, 8, 9, 10, 11);
     34 
     35 myUln200xa_obj.goForward = function()
     36 {
     37     myUln200xa_obj.setSpeed(5); // 5 RPMs
     38     myUln200xa_obj.setDirection(Uln200xa_lib.ULN200XA.DIR_CW);
     39     console.log("Rotating 1 revolution clockwise.");
     40     myUln200xa_obj.stepperSteps(4096);
     41 };
     42 
     43 myUln200xa_obj.reverseDirection = function()
     44 {
     45 	console.log("Rotating 1/2 revolution counter clockwise.");
     46 	myUln200xa_obj.setDirection(Uln200xa_lib.ULN200XA.DIR_CCW);
     47 	myUln200xa_obj.stepperSteps(2048);
     48 };
     49 
     50 myUln200xa_obj.stop = function()
     51 {
     52 	myUln200xa_obj.release();
     53 };
     54 
     55 myUln200xa_obj.quit = function()
     56 {
     57 	myUln200xa_obj = null;
     58 	Uln200xa_lib.cleanUp();
     59 	Uln200xa_lib = null;
     60 	console.log("Exiting");
     61 	process.exit(0);
     62 };
     63 
     64 // Run ULN200xa driven stepper
     65 myUln200xa_obj.goForward();
     66 setTimeout(myUln200xa_obj.reverseDirection, 2000);
     67 setTimeout(function()
     68 {
     69 	myUln200xa_obj.stop();
     70 	myUln200xa_obj.quit();
     71 }, 2000);
     72