add DMX4ALL (NanoDMX USB) driver

dmx.js

@@ -10,6 +10,7 @@ function DMX(options) {
 	this.devices   = options.devices || require('./devices')
 
 	this.registerDriver('null',                require('./drivers/null'))
+	this.registerDriver('dmx4all',             require('./drivers/dmx4all'))
 	this.registerDriver('enttec-usb-dmx-pro',  require('./drivers/enttec-usb-dmx-pro'))
 	this.registerDriver('enttec-open-usb-dmx', require('./drivers/enttec-open-usb-dmx'))
 	this.registerDriver('artnet',              require('./drivers/artnet'))

drivers/dmx4all.js

@@ -0,0 +1,65 @@
+"use strict"
+
+var SerialPort = require("serialport")
+
+function DMX4ALL(device_id, options) {
+	var self = this
+	options = options || {}
+	this.universe = new Buffer(512)
+	this.universe.fill(0)
+
+	this.dev = new SerialPort(device_id, {
+		'baudrate': 38400,
+		'databits': 8,
+		'stopbits': 1,
+		'parity': 'none'
+	}, function(err) {
+		if(!err) {
+			self.send_universe()
+		}
+	})
+	this.dev.on('data', function(data) {
+		//process.stdout.write(data.toString('ascii'))
+	})
+}
+
+DMX4ALL.prototype.send_universe = function() {
+	if(!this.dev.isOpen()) {
+		return
+	}
+
+	var msg = Buffer(this.universe.length * 3)
+	for(var i = 0; i < this.universe.length; i++) {
+		msg[i * 3 + 0] = (i < 256) ? 0xE2 : 0xE3
+		msg[i * 3 + 1] = i
+		msg[i * 3 + 2] = this.universe[i]
+	}
+	this.dev.write(msg)
+}
+
+DMX4ALL.prototype.start = function() {}
+DMX4ALL.prototype.stop = function() {}
+
+DMX4ALL.prototype.close = function(cb) {
+	this.dev.close(cb)
+}
+
+DMX4ALL.prototype.update = function(u) {
+	for(var c in u) {
+		this.universe[c] = u[c]
+	}
+	this.send_universe()
+}
+
+DMX4ALL.prototype.updateAll = function(v){
+	for(var i = 0; i < 512; i++) {
+		this.universe[i] = v
+	}
+	this.send_universe()
+}
+
+DMX4ALL.prototype.get = function(c) {
+	return this.universe[c]
+}
+
+module.exports = DMX4ALL