node-red-nodes/hardware/sensorTag/79-sensorTag.js

module.exports = function(RED) {
    "use strict";
    var SensorTag = require("sensortag");

    function SensorTagNode(n) {
        RED.nodes.createNode(this,n);
        this.name = n.name;
        this.topic = n.topic;
        this.uuid = n.uuid;
        this.temperature = n.temperature;
        this.pressure = n.pressure;
        this.humidity = n.humidity;
        this.accelerometer = n.accelerometer;
        this.magnetometer = n.magnetometer;
        this.gyroscope = n.gyroscope;
        this.luxometer = n.luxometer;
        this.keys = n.keys;
        if (this.uuid === "") { this.uuid = undefined; }
        var node = this;
        node.discovering = false;

        if (typeof node.stag === "undefined") {
            node.loop = setInterval(function() {
                if (!node.discovering) {
                    node.status({fill:"blue", shape:"dot", text:"discovering..."});
                    node.discovering = true;
                    SensorTag.discover(function(sensorTag) {
                        node.status({fill:"blue", shape:"dot", text:"connecting"});
                        node.stag = sensorTag;
                        node.log("found sensor tag: " + sensorTag._peripheral.uuid);
                        node.topic = node.topic || sensorTag._peripheral.uuid;
                        sensorTag.connect(function() {
                            node.log("connected to sensor tag: " + sensorTag._peripheral.uuid);
                            node.status({fill:"green", shape:"dot", text:"connected"});

                            sensorTag.once('disconnect', function() {
                                node.discovering = false;
                                node.status({fill:"red", shape:"ring", text:"disconnected"});
                                node.log("disconnected ",node.uuid);
                            });

                            sensorTag.discoverServicesAndCharacteristics(function() {
                                sensorTag.enableIrTemperature(function() {});
                                sensorTag.on('irTemperatureChange',
                                function(objectTemperature, ambientTemperature) {
                                    var msg = {
                                        'topic': node.topic + '/temperature',
                                        'payload': {
                                            'object': +objectTemperature.toFixed(1),
                                            'ambient': +ambientTemperature.toFixed(1)
                                        }
                                    }
                                    node.send(msg);
                                });
                                sensorTag.enableBarometricPressure(function() {});
                                sensorTag.on('barometricPressureChange', function(pressure) {
                                    var msg = {'topic': node.topic + '/pressure'};
                                    msg.payload = {'pressure': parseInt(pressure)};
                                    node.send(msg);
                                });
                                sensorTag.enableHumidity(function() {});
                                sensorTag.on('humidityChange', function(temp, humidity) {
                                    var msg = {'topic': node.topic + '/humidity'};
                                    msg.payload = {
                                        'temperature': +temp.toFixed(1),
                                        'humidity': +humidity.toFixed(1)
                                    };
                                    if ((temp !== -40) || (humidity !== 100)) {
                                        node.send(msg);
                                    }
                                });
                                sensorTag.enableAccelerometer(function() {});
                                sensorTag.on('accelerometerChange', function(x,y,z) {
                                    var msg = {'topic': node.topic + '/accelerometer'};
                                    msg.payload = {'x': +x.toFixed(2), 'y': +y.toFixed(2), 'z': +z.toFixed(2)};
                                    node.send(msg);
                                });
                                sensorTag.enableMagnetometer(function() {});
                                sensorTag.on('magnetometerChange', function(x,y,z) {
                                    var msg = {'topic': node.topic + '/magnetometer'};
                                    msg.payload = {'x': +x.toFixed(2), 'y': +y.toFixed(2), 'z': +z.toFixed(2)};
                                    node.send(msg);
                                });
                                sensorTag.enableGyroscope(function() {});
                                sensorTag.on('gyroscopeChange', function(x,y,z) {
                                    var msg = {'topic': node.topic + '/gyroscope'};
                                    msg.payload = {'x': +x.toFixed(2), 'y': +y.toFixed(2), 'z': +z.toFixed(2)};
                                    node.send(msg);
                                });
                                sensorTag.on('simpleKeyChange', function(left, right, mag) {
                                    var msg = {'topic': node.topic + '/keys'};
                                    msg.payload = {'left': left, 'right': right, 'magnet': mag};
                                    node.send(msg);
                                });
                                sensorTag.on('luxometerChange', function(lux) {
                                    var msg = {'topic': node.topic + '/luxometer'};
                                    msg.payload = {'lux': parseInt(lux)};
                                    node.send(msg);
                                });
                                enable(node);
                            });
                        });
                    },node.uuid);
                }
            },15000);
        }
        else {
            console.log("reconfig",node.uuid);
            enable(node);
        }

        this.on("close", function() {
            if (node.loop) { clearInterval(node.loop); }
            if (node.stag) { node.stag.disconnect(function() {}); }
        });
    }

    var enable = function(node) {
        if (node.temperature) {
            node.stag.notifyIrTemperature(function() {});
        }
        else {
            node.stag.unnotifyIrTemperature(function() {});
        }
        if (node.pressure) {
            node.stag.notifyBarometricPressure(function() {});
        }
        else {
            node.stag.unnotifyBarometricPressure(function() {});
        }
        if (node.humidity) {
            node.stag.notifyHumidity(function() {});
        }
        else {
            node.stag.unnotifyHumidity(function() {});
        }
        if (node.accelerometer) {
            node.stag.notifyAccelerometer(function() {});
        }
        else {
            node.stag.unnotifyAccelerometer(function() {});
        }
        if (node.magnetometer) {
            node.stag.notifyMagnetometer(function() {});
        }
        else {
            node.stag.unnotifyMagnetometer(function() {});
        }
        if (node.gyroscope) {
            node.stag.notifyGyroscope(function() {});
        }
        else {
            node.stag.unnotifyGyroscope(function() {});
        }
        if (node.stag.type === "cc2650") {
            if (node.luxometer) {
                node.stag.enableLuxometer(function() {});
                node.stag.notifyLuxometer(function() {});
            }
            else {
                node.stag.unnotifyLuxometer(function() {});
                node.stag.disableLuxometer(function() {});
            }
        }
        if (node.keys) {
            node.stag.notifySimpleKey(function() {});
        }
        else {
            node.stag.unnotifySimpleKey(function() {});
        }
    }

    RED.nodes.registerType("sensorTag",SensorTagNode);
}