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node-red-nodes/hardware/blink/77-blink1.js
2014-02-24 21:12:20 +00:00

84 lines
3.5 KiB
JavaScript

/**
* Copyright 2013 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.
**/
var RED = require(process.env.NODE_RED_HOME+"/red/red");
var Blink1 = require("node-blink1");
// create a single global blink1 object
// all blink1 nodes affect the same (single) led
var blink1 = null;
function Blink1Node(n) {
RED.nodes.createNode(this,n);
this.fade = Number(n.fade) || 0;
var node = this;
try {
var p1 = /^\#[A-Fa-f0-9]{6}$/
var p2 = /[0-9]+,[0-9]+,[0-9]+/
this.on("input", function(msg) {
blink1 = blink1 || new Blink1.Blink1();
if (blink1) {
try {
if (p1.test(msg.payload)) {
// if it is a hex colour string
var r = parseInt(msg.payload.slice(1,3),16);
var g = parseInt(msg.payload.slice(3,5),16);
var b = parseInt(msg.payload.slice(5),16);
if (node.fade == 0) { blink1.setRGB( r, g, b ); }
else { blink1.fadeToRGB(node.fade, r, g, b ); }
}
else if (p2.test(msg.payload)) {
// if it is a r,g,b triple
var rgb = msg.payload.split(',');
if (node.fade == 0) { blink1.setRGB(parseInt(rgb[0])&255, parseInt(rgb[1])&255, parseInt(rgb[2])&255); }
else { blink1.fadeToRGB(node.fade, parseInt(rgb[0])&255, parseInt(rgb[1])&255, parseInt(rgb[2])&255); }
}
else {
// you can add fancy colours by name here if you want...
// these are the @cheerlight ones.
var colors = {"red":"#FF0000","green":"#008000","blue":"#0000FF","cyan":"#00FFFF","white":"#FFFFFF","warmwhite":"#FDF5E6",
"purple":"#800080","magenta":"#FF00FF","yellow":"#FFFF00","amber":"#FFD200","orange":"#FFA500","black":"#000000"}
if (msg.payload.toLowerCase() in colors) {
var c = colors[msg.payload.toLowerCase()];
var r = parseInt(c.slice(1,3),16);
var g = parseInt(c.slice(3,5),16);
var b = parseInt(c.slice(5),16);
if (node.fade == 0) { blink1.setRGB( r, g, b ); }
else { blink1.fadeToRGB(node.fade, r, g, b ); }
}
else {
node.warn("Blink1 : invalid msg : "+msg.payload);
}
}
} catch (e) { node.warn("Blink1 : error"); blink1 = null; }
}
else {
node.warn("Blink1 : not found");
}
});
this.on("close", function() {
if (blink1 && typeof blink1.close == "function") {
//blink1.close(); //This ought to work but seems to cause more hangs on closing than not...
}
blink1 = null;
});
}
catch(e) {
node.error("No Blink1 found (" + e + ")");
}
}
RED.nodes.registerType("blink1",Blink1Node);