added driver for artnet (enttec ode) (#13)

drivers/artnet.js

@@ -0,0 +1,70 @@
+"use strict"
+
+const dgram = require('dgram');
+
+const ARTNET = {
+	PORT : 6454,
+	HOST : "127.0.0.1"
+}
+
+function EnttecODE(device_id, cb) {
+    var self = this
+
+    self.header = new Buffer([65, 114, 116, 45, 78, 101, 116, 0, 0, 80, 0, 14]);
+    self.sequence = self.physical = new Buffer([0]);
+    self.length = new Buffer([0x02,0x00]);
+
+    cb = cb || function() {}
+    this.universe = new Buffer(512)
+    this.universe.fill(0)
+
+    self.sleepTime = 24
+    self.timeout
+
+    self.dev = dgram.createSocket('udp4');
+    self.start();
+
+    // self.dev.bind(6454, function() {
+
+    // });
+}
+
+EnttecODE.prototype.send_universe = function() {
+
+    var pkg = Buffer.concat([this.header, this.sequence, this.physical,this.length,this.universe]);
+
+    this.dev.send(pkg, 0, pkg.length, ARTNET.PORT, ARTNET.HOST, function() {
+      	// Package Sent  
+    });
+}
+
+EnttecODE.prototype.start = function() {
+    this.timeout = setInterval(this.send_universe.bind(this), this.sleepTime)
+}
+
+EnttecODE.prototype.stop = function() {
+    clearInterval(this.timeout)
+}
+
+EnttecODE.prototype.close = function(cb) {
+    this.stop()
+    this.dev.close(cb)
+}
+
+EnttecODE.prototype.update = function(u) {
+    for (var c in u) {
+        this.universe[c] = u[c]
+    }
+}
+
+EnttecODE.prototype.updateAll = function(v) {
+    for (var i = 0; i < 512; i++) {
+        this.universe[i] = v
+    }
+}
+
+EnttecODE.prototype.get = function(c) {
+    return this.universe[c]
+}
+
+module.exports = EnttecODE