upm/examples/javascript/l298-stepper.js
Mihai Tudor Panu 89d5de43e0 license: update to SPDX style license text throughout
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
2020-03-05 15:13:36 -08:00

63 lines
1.6 KiB
JavaScript

/*
* Author: Zion Orent <zorent@ics.com>
* Copyright (c) 2015 Intel Corporation.
*
* This program and the accompanying materials are made available under the
* terms of the The MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
*/
var HBridge_lib = require('jsupm_l298');
// Instantiate a Stepper motor on a L298 Dual H-Bridge.
// This was tested with the NEMA-17 12V, 350mA, with 200 steps per rev.
var myHBridge_obj = new HBridge_lib.L298(200, 3, 4, 7, 8, 9);
/**************************************
* Instantiate H-bridge stepper object
***************************************/
myHBridge_obj.goForward = function()
{
myHBridge_obj.setSpeed(10); // 10 RPMs
myHBridge_obj.setDirection(HBridge_lib.L298.DIR_CW);
myHBridge_obj.enable(true);
console.log("Rotating 1 full revolution at 10 RPM speed.");
// move 200 steps, a full rev
myHBridge_obj.stepperSteps(200);
};
myHBridge_obj.reverseDirection = function()
{
console.log("Rotating 1/2 revolution in opposite direction at 10 RPM speed.");
myHBridge_obj.setDirection(HBridge_lib.L298.DIR_CCW);
myHBridge_obj.stepperSteps(100);
};
myHBridge_obj.stop = function()
{
myHBridge_obj.enable(false);
};
myHBridge_obj.quit = function()
{
myHBridge_obj = null;
HBridge_lib.cleanUp();
HBridge_lib = null;
console.log("Exiting");
process.exit(0);
};
/************************
* Run H-bridge stepper!
*************************/
myHBridge_obj.goForward();
setTimeout(myHBridge_obj.reverseDirection, 2000);
setTimeout(function()
{
myHBridge_obj.stop();
myHBridge_obj.quit();
}, 4000);