node-red-contrib-tinkerforge/bricklets/Motion.js

Node-RED nodes to access Tinkerforge sensors

/**
 * Copyright 2017 IBM Corp.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/



"use strict";
var Tinkerforge = require('tinkerforge');
var devices = require('../lib/devices');

module.exports = function(RED) {

	function tinkerForgeMovement(n) {
        RED.nodes.createNode(this,n);
        this.device = n.device;
        this.sensor = n.sensor;
        this.name = n.name;
        this.topic = n.topic;
        var node = this;

        node.ipcon = new Tinkerforge.IPConnection(); //devices[this.device].ipcon;
        node.ipcon.setAutoReconnect(true);
        var devs = devices.getDevices();
        node.ipcon.connect(devs[node.device].host, devs[node.device].port,function(error){
            if(error) {
                node.warn("couldn't connect");
            }
        });

        node.ipcon.on(Tinkerforge.IPConnection.CALLBACK_CONNECTED,
        function(connectReason) {
            node.md = new Tinkerforge.BrickletMotionDetector(node.sensor, node.ipcon);
            node.md.on(Tinkerforge.BrickletMotionDetector.CALLBACK_MOTION_DETECTED,detected);

            // Register detection cycle ended callback
            node.md.on(Tinkerforge.BrickletMotionDetector.CALLBACK_DETECTION_CYCLE_ENDED,ended);
        });

        var detected = function () {
            node.send({
                topic: node.topic || "movement",
                payload: true
            });
        };

        var ended = function () {
            node.send({
                topic: node.topic || "movement",
                payload: false
            });
        };



        node.on('close',function() {
            node.ipcon.disconnect();
        });
    }

    RED.nodes.registerType('TinkerForge Motion', tinkerForgeMovement);
}