124 lines
3.4 KiB
JavaScript
124 lines
3.4 KiB
JavaScript
/*
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* connection
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* cylonjs.com
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*
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* Copyright (c) 2013-2014 The Hybrid Group
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* Licensed under the Apache 2.0 license.
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*/
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'use strict';
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require("./robot");
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require("./port");
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require("./adaptor");
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require("./utils");
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var namespace = require('node-namespace'),
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EventEmitter = require('events').EventEmitter;
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// The Connection class represents the interface to
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// a specific group of hardware devices. Examples would be an
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// Arduino, a Sphero, or an ARDrone.
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namespace("Cylon", function() {
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this.Connection = (function(klass) {
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subclass(Connection, klass);
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// Public: Creates a new Connection
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//
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// opts - hash of acceptable params:
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// id - string ID for the connection
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// robot - Robot the Connection belongs to
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// name - name for the connection
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// adaptor - string module name of the adaptor to be set up
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// port - string port to use for the Connection
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//
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// Returns the newly set-up connection
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function Connection(opts) {
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if (opts == null) { opts = {}; }
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if (opts.id == null) { opts.id = Math.floor(Math.random() * 10000); }
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this.connect = bind(this.connect, this);
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this.self = this;
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this.robot = opts.robot;
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this.name = opts.name;
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this.connection_id = opts.id;
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this.port = new Cylon.Port(opts.port);
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this.adaptor = this.initAdaptor(opts);
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proxyFunctionsToObject(this.adaptor.commands(), this.adaptor, this.self);
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}
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// Public: Exports basic data for the Connection
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//
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// Returns an Object containing Connection data
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Connection.prototype.data = function() {
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return {
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name: this.name,
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port: this.port.toString(),
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adaptor: this.adaptor.constructor.name || this.adaptor.name,
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connection_id: this.connection_id
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};
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};
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// Public: Connect the adaptor's connection
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//
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// callback - callback function to run when the adaptor is connected
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//
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// Returns the result of the supplied callback function
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Connection.prototype.connect = function(callback) {
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var msg = "Connecting to " + this.name;
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if (this.port != null) {
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msg += " on port " + this.port.toString();
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}
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Logger.info(msg);
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return this.adaptor.connect(callback);
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};
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// Public: Disconnect the adaptor's connection
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//
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// Returns nothing
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Connection.prototype.disconnect = function() {
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var msg = "Disconnecting from " + this.name;
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if (this.port != null) {
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msg += " on port " + this.port.toString();
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}
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Logger.info(msg);
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return this.adaptor.disconnect();
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};
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// Public: sets up adaptor with @robot
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//
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// opts - options for adaptor being initialized
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// adaptor - name of the adaptor
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//
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// Returns the set-up adaptor
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Connection.prototype.initAdaptor = function(opts) {
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Logger.debug("Loading adaptor '" + opts.adaptor + "'");
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return this.robot.initAdaptor(opts.adaptor, this.self, opts);
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};
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// Public: Stop the adaptor's connection
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//
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// Returns nothing
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Connection.prototype.stop = function() {
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var msg;
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msg = "Stopping adaptor '" + this.name + "'";
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if (this.port != null) {
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msg += " on port '" + (this.port.toString()) + "'";
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}
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Logger.info(msg);
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return this.disconnect();
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};
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return Connection;
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})(EventEmitter);
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});
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module.exports = Cylon.Connection;
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