node-red-contrib-smartnode-seeed
Version:
this project dependences the node-red-contrib-smartnode package for basic function. based on the smartnode package, this package provide some sersor nodes for Seeed sensors.
59 lines (58 loc) • 2.19 kB
JavaScript
/**
* Copyright 2015, 2015 MakerCollider.
*
* 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.
**/
module.exports = function(RED){
var groveSensor = require("jsupm_th02");
function temperatureHumidity(config) {
RED.nodes.createNode(this, config);
this.interval = config.interval;
var node = this;
var is_on = false;
var waiting;
var th02 = new groveSensor.TH02(0, 0x40);
this.on('input', function(msg) {
//use 'injector' node and pass string to control virtual node
var payload = msg.payload>>>0;
console.log("recv msg: " + payload);
if (payload) {
//switch on
if (is_on == false) {
is_on = true;
waiting = setInterval(readvalue,node.interval);
}
}//switch off
else {
if (is_on == true) {
is_on = false;
node.status({fill: "red", shape: "ring", text: "no signal"});
clearInterval(waiting);
}
}
});
this.on('close', function() {
clearInterval(waiting);
});
function readvalue()
{
var temperature = th02.getTemperature();
var humidity = th02.getHumidity();
node.status({fill: "red", shape: "dot", text: "temperature is " + temperature + ", humidity is " + humidity});
var msg = { payload:temperature };
var msg1 = { payload:humidity };
node.send([msg, msg1]);
}
}
RED.nodes.registerType("Seeed-TemperatureHumidity", temperatureHumidity);
}