70 lines
1.4 KiB
JavaScript
70 lines
1.4 KiB
JavaScript
"use strict"
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var FTDI = require('ftdi')
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function EnttecOpenUsbDMX(device_id, cb) {
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var self = this;
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cb = cb || function() {}
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self.universe = new Buffer(513);
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self.universe.fill(0);
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self.sleepTime = 20;
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self.timeout;
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self.dev = new FTDI.FtdiDevice(device_id)
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self.dev.open({
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'baudrate': 115200 / 2,
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'databits': 8,
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'stopbits': 2,
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'parity': 'none'
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}, function(err) {
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cb(err, device_id)
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if(!err) {
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self.loopUniverse()
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}
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})
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}
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EnttecOpenUsbDMX.prototype.loopUniverse = function(){
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var self = this;
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self.dev.write(self.universe);
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self.timeout = setTimeout(function(){
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self.loopUniverse();
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}, self.sleepTime)
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}
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EnttecOpenUsbDMX.prototype.pause = function(){
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clearTimeout(self.timeout);
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}
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EnttecOpenUsbDMX.prototype.close = function(cb){
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self.dev.close(function(err){
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cb(err)
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})
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}
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EnttecOpenUsbDMX.prototype.update = function(u) {
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var self = this;
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for(var c in u) {
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self.universe[(c + 1)] = u[self.toHex(c)];
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}
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}
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EnttecOpenUsbDMX.prototype.get = function(c) {
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var self = this;
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return self.universe[(c + 1)];
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}
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EnttecOpenUsbDMX.prototype.toHex = function(number){
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var self = this;
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var octet = parseInt(number).toString(16);
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if(octet.length == 1){ octet = "0" + octet; }
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var fullOctet = "0x" + octet;
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return eval(fullOctet); // TODO: dangerous!
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}
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module.exports = EnttecOpenUsbDMX
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