75 lines
1.4 KiB
JavaScript
75 lines
1.4 KiB
JavaScript
"use strict"
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var SerialPort = require("serialport").SerialPort
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function EnttecOpenUsbDMX(device_id, options) {
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var self = this
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options = options || {}
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this.universe = new Buffer(512)
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this.universe.fill(0)
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self.interval = 46
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this.dev = new SerialPort(device_id, {
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'baudrate': 250000,
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'databits': 8,
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'stopbits': 2,
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'parity': 'none'
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}, true, function(err) {
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if(err) {
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console.log(err)
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return
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}
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self.start()
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})
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}
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EnttecOpenUsbDMX.prototype.send_universe = function() {
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var self = this
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if(!this.dev.isOpen()) {
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return
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}
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// toggle break
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self.dev.set({brk: true}, function(err, r) {
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setTimeout(function() {
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self.dev.set({brk: false}, function(err, r) {
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setTimeout(function() {
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self.dev.write(Buffer.concat([Buffer([0]), self.universe]))
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}, 1)
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})
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}, 1)
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})
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}
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EnttecOpenUsbDMX.prototype.start = function() {
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this.intervalhandle = setInterval(this.send_universe.bind(this), this.interval)
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}
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EnttecOpenUsbDMX.prototype.stop = function() {
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clearInterval(this.intervalhandle)
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}
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EnttecOpenUsbDMX.prototype.close = function(cb) {
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this.stop()
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this.dev.close(cb)
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}
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EnttecOpenUsbDMX.prototype.update = function(u) {
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for(var c in u) {
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this.universe[c] = u[c]
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}
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}
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EnttecOpenUsbDMX.prototype.updateAll = function(v) {
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for(var i = 0; i < 512; i++) {
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this.universe[i] = v
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}
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}
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EnttecOpenUsbDMX.prototype.get = function(c) {
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return this.universe[c]
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}
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module.exports = EnttecOpenUsbDMX
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