69 lines
2.1 KiB
JavaScript
69 lines
2.1 KiB
JavaScript
/**
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* Copyright 2013 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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var RED = require(process.env.NODE_RED_HOME+"/red/red");
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var HID = require('node-hid');
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var device;
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var node;
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function DigiRGBNode(n) {
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RED.nodes.createNode(this,n);
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node=this;
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var devices = HID.devices(0x16c0,0x05df);
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for (var i=0; i< devices.length; i++) {
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if (devices[i].product == 'DigiUSB') {
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path = devices[i].path;
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node.log("found: " + path);
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try {
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device = new HID.HID(devices[i].path);
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break;
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} catch (e) {
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node.log(e)
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}
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}
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}
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var p1 = /^\#[A-Fa-f0-9]{6}$/
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var p2 = /[0-9]+,[0-9]+,[0-9]+/
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if (device) {
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this.on("input", function(msg) {
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if (msg != null) {
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if (p1.test(msg.payload)) {
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var r = parseInt(msg.payload.slice(1,3),16);
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var g = parseInt(msg.payload.slice(3,5),16);
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var b = parseInt(msg.payload.slice(5),16);
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device.sendFeatureReport([115,r,g,b]);
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} else if (p2.test(msg.payload)) {
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var args = msg.payload.split(',');
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if (args.length == 3) {
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device.sendFeatureReport([115,parseInt(args[0]),parseInt(args[1]),parseInt(args[2])]);
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}
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} else {
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node.warn("incompatable input - " + msg.payload);
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}
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}
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});
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} else {
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node.warn("no digispark RGB found");
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}
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this.on('close', function() {
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if (device) { device.close(); });
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}
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RED.nodes.registerType("digiRGB",DigiRGBNode);
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