140 lines
5.3 KiB
JavaScript
140 lines
5.3 KiB
JavaScript
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module.exports = function(RED) {
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"use strict";
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var util = require("util");
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//var exec = require('child_process').exec;
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var spawn = require('child_process').spawn;
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var fs = require('fs');
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var LedBorgInUse = false;
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var gpioCommand = __dirname+'/nrgpio';
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try {
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var cpuinfo = fs.readFileSync("/proc/cpuinfo").toString();
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if (cpuinfo.indexOf(": BCM") === -1) { throw "Info : "+RED._("rpi-gpio.errors.ignorenode"); }
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} catch(err) {
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throw "Info : "+RED._("rpi-gpio.errors.ignorenode");
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}
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if (!fs.existsSync("/usr/share/doc/python-rpi.gpio")) {
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util.log("[rpi-ledborg] Info : Can't find RPi.GPIO python library.");
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throw "Warning : Can't find RPi.GPIO python library.";
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}
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if ( !(1 & parseInt ((fs.statSync(gpioCommand).mode & parseInt ("777", 8)).toString (8)[0]) )) {
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util.log("[rpi-ledborg] Error : "+gpioCommand+" needs to be executable.");
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throw "Error : nrgpio must to be executable.";
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}
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// GPIO pins 11 (R), 13 (G), 15 (B).
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function LedBorgNode(n) {
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RED.nodes.createNode(this,n);
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if (LedBorgInUse) { this.error("LEDborg node already in use - you may only have one."); }
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else { LedBorgInUse = true; }
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this.pin = n.pin;
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this.set = n.set || false;
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this.level = n.level || 0;
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this.out = n.out || "out";
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var node = this;
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var p1 = /^[0-2][0-2][0-2]$/
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var p2 = /^\#[A-Fa-f0-9]{6}$/
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var p3 = /^\d+,\d+,\d+$/
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function inputlistener(msg) {
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var rgb = "000";
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if (typeof msg.payload === "number") {
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msg.payload = ("000"+msg.payload.toString()).substr(-3);
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}
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if (typeof msg.payload === "boolean") {
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msg.payload = msg.payload ? "222" : "000";
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}
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if (p1.test(msg.payload)) {
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rgb = msg.payload;
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rgb = Number(rgb[0])*50+","+Number(rgb[1])*50+","+Number(rgb[2])*50;
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}
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else if (p2.test(msg.payload)) {
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var r = Math.floor(parseInt(msg.payload.slice(1,3),16)*100/256).toString();
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var g = Math.floor(parseInt(msg.payload.slice(3,5),16)*100/256).toString();
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var b = Math.floor(parseInt(msg.payload.slice(5),16)*100/256).toString();
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rgb = r+","+g+","+b;
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}
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else if (p3.test(msg.payload)) {
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var c = msg.payload.split(",");
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var r1 = Math.floor(parseInt(c[0])*100/256).toString();
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var g1 = Math.floor(parseInt(c[1])*100/256).toString();
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var b1 = Math.floor(parseInt(c[2])*100/256).toString();
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rgb = r1+","+g1+","+b1;
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}
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else {
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// you can add fancy colours by name here if you want...
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// these are the @cheerlight ones.
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var colors = {"red":"200","green":"020","blue":"002","cyan":"022","white":"222","pink":"201","oldlace":"221",
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"warmwhite":"221","purple":"101","magenta":"202","yellow":"220","amber":"220","orange":"210","black":"000","off":"000"}
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if (msg.payload.toLowerCase() in colors) {
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rgb = colors[msg.payload.toLowerCase()];
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rgb = Number(rgb[0])*50+","+Number(rgb[1])*50+","+Number(rgb[2])*50;
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}
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else {
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node.warn("Invalid LedBorg colour code");
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}
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}
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if (RED.settings.verbose) { node.log("out: "+msg.payload); }
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if (node.child !== null) {
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node.child.stdin.write(rgb+"\n");
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node.status({fill:"green",shape:"dot",text:msg.payload});
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}
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else {
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node.warn("Command not running");
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node.status({fill:"red",shape:"ring",text:"Command not running"});
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}
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}
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node.child = spawn(gpioCommand, ["borg","11"]);
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node.running = true;
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node.status({fill:"green",shape:"dot",text:"OK"});
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node.on("input", inputlistener);
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node.child.stdout.on('data', function (data) {
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if (RED.settings.verbose) { node.log("out: "+data+" :"); }
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});
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node.child.stderr.on('data', function (data) {
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if (RED.settings.verbose) { node.log("err: "+data+" :"); }
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});
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node.child.on('close', function () {
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node.child = null;
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node.running = false;
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node.status({fill:"red",shape:"circle",text:""});
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if (RED.settings.verbose) { node.log("closed"); }
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if (node.done) { node.done(); }
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});
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node.child.on('error', function (err) {
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if (err.errno === "ENOENT") { node.warn('Command not found'); }
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else if (err.errno === "EACCES") { node.warn('Command not executable'); }
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else { node.log('error: ' + err); }
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});
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node.on("close", function(done) {
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LedBorgInUse = false;
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node.status({fill:"red",shape:"circle",text:""});
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if (node.child != null) {
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node.done = done;
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node.child.stdin.write(" close 11");
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node.child.kill('SIGKILL');
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}
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else { done(); }
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});
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}
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RED.nodes.registerType("ledborg",LedBorgNode);
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}
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