84 lines
1.9 KiB
JavaScript
84 lines
1.9 KiB
JavaScript
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"use strict"
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var SerialPort = require("serialport")
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var DMXKING_ULTRA_DMX_PRO_DMX_STARTCODE = 0x00
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, DMXKING_ULTRA_DMX_PRO_START_OF_MSG = 0x7e
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, DMXKING_ULTRA_DMX_PRO_END_OF_MSG = 0xe7
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, DMXKING_ULTRA_DMX_PRO_SEND_DMX_RQ = 0x06
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, DMXKING_ULTRA_DMX_PRO_SEND_DMX_A_RQ = 0x64
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, DMXKING_ULTRA_DMX_PRO_SEND_DMX_B_RQ = 0x65
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, DMXKING_ULTRA_DMX_PRO_RECV_DMX_PKT = 0x05
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;
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function DMXKingUltraDMXPro(device_id, options) {
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var self = this
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this.options = options || {}
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this.universe = new Buffer(512)
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this.universe.fill(0)
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this.sendDMXReq = DMXKING_ULTRA_DMX_PRO_SEND_DMX_RQ
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if (this.options.port === "A") {
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this.sendDMXReq = DMXKING_ULTRA_DMX_PRO_SEND_DMX_A_RQ
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} else if (this.options.port === "B") {
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this.sendDMXReq = DMXKING_ULTRA_DMX_PRO_SEND_DMX_B_RQ
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}
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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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}, function(err) {
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if(!err) {
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self.send_universe()
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}
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})
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}
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DMXKingUltraDMXPro.prototype.send_universe = function() {
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if(!this.dev.isOpen()) {
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return
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}
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var hdr = Buffer([
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DMXKING_ULTRA_DMX_PRO_START_OF_MSG,
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this.sendDMXReq,
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(this.universe.length + 1) & 0xff,
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((this.universe.length + 1) >> 8) & 0xff,
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DMXKING_ULTRA_DMX_PRO_DMX_STARTCODE
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])
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var msg = Buffer.concat([
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hdr,
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this.universe,
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Buffer([DMXKING_ULTRA_DMX_PRO_END_OF_MSG])
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])
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this.dev.write(msg)
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}
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DMXKingUltraDMXPro.prototype.start = function() {}
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DMXKingUltraDMXPro.prototype.stop = function() {}
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DMXKingUltraDMXPro.prototype.close = function(cb) {
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this.dev.close(cb)
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}
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DMXKingUltraDMXPro.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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this.send_universe()
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}
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DMXKingUltraDMXPro.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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this.send_universe()
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}
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DMXKingUltraDMXPro.prototype.get = function(c) {
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return this.universe[c]
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}
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module.exports = DMXKingUltraDMXPro
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