Update enttec-open-usb-dmx.js

drivers/enttec-open-usb-dmx.js

@@ -2,59 +2,69 @@
 
 var FTDI = require('ftdi')
 
-var	ENTTEC_PRO_DMX_STARTCODE = 0x00
-	, ENTTEC_PRO_START_OF_MSG  = 0x7e
-	, ENTTEC_PRO_END_OF_MSG    = 0xe7
-	, ENTTEC_PRO_SEND_DMX_RQ   = 0x06
-	;
-
 function EnttecOpenUsbDMX(device_id, cb) {
-	var self = this
-	cb = cb || function() {}
-	this.universe = new Buffer(512)
-	this.universe.fill(0)
+  var self = this;
 
-	this.dev = new FTDI.FtdiDevice(device_id)
-	this.dev.open({
-		'baudrate': 115200,
+  cb = cb || function() {}
+  self.universe = new Buffer(513);
+  self.universe.fill(0);
+  self.sleepTime = 20; 
+  self.timeout;
+  
+  self.dev = new FTDI.FtdiDevice(device_id)
+  self.dev.open({
+    'baudrate': 115200 / 2,
     'databits': 8,
     'stopbits': 2,
     'parity': 'none'
   }, function(err) {
     cb(err, device_id)
     if(!err) {
-			self.send_universe()
+      self.loopUniverse()
     }
   })
 }
 
-EnttecOpenUsbDMX.prototype.send_universe = function() {
-	var hdr = Buffer([
-		ENTTEC_PRO_START_OF_MSG,
-		ENTTEC_PRO_SEND_DMX_RQ,
-		 // (this.universe.length + 1)       & 0xff,
-	  ((this.universe.length + 1) >> 0) & 0xff,
-		((this.universe.length + 1) >> 8) & 0xff,
-		ENTTEC_PRO_DMX_STARTCODE
-	])
+EnttecOpenUsbDMX.prototype.loopUniverse = function(){
+  var self = this;
 
-	var msg = Buffer.concat([
-		hdr,
-		this.universe,
-		Buffer([ENTTEC_PRO_END_OF_MSG])
-	])
-	this.dev.write(msg)
+  self.dev.write(self.universe);
+  self.timeout = setTimeout(function(){
+    self.loopUniverse();
+  }, self.sleepTime)
+}
+
+EnttecOpenUsbDMX.prototype.pause = function(){
+  clearTimeout(self.timeout);
+}
+
+EnttecOpenUsbDMX.prototype.close = function(cb){
+  self.dev.close(function(err){
+    cb(err)
+  })
 }
 
 EnttecOpenUsbDMX.prototype.update = function(u) {
+  var self = this;
+
   for(var c in u) {
-		this.universe[c] = u[c]
+    self.universe[(c + 1)] = u[self.toHex(c)];
   }
-	this.send_universe()
 }
 
 EnttecOpenUsbDMX.prototype.get = function(c) {
-	return this.universe[c]
+  var self = this;
+
+  return self.universe[(c + 1)];
+}
+
+EnttecOpenUsbDMX.prototype.toHex = function(number){
+  var self = this;
+
+  var octet =  parseInt(number).toString(16);
+  if(octet.length == 1){ octet = "0" + octet; }
+  var fullOctet = "0x" + octet;
+  return eval(fullOctet); // TODO: dangerous! 
 }
 
 module.exports = EnttecOpenUsbDMX