grbl-parser

Grbl machine parser library written in javascript

Provides an event-based callbacks to parse any strings grbl may output.

Supports Grbl 0.9, 1.0, and 1.1 (untested with grbl 0.8)

Installation

npm install grbl-parser --save

Usage

var GrblParser = require("grbl-parser")
var parser = new GrblParser()
var myCallback = function(parsedData) {
  // do stuff with parsed data (see example status output in Examples section)
}
var myString = "<Hold:0|MPos:0.000,0.000,0.000|Bf:15,128|FS:675.5,24000|Ov:120,100,100|WCO:0.000,-5.200,306.351|A:SFM>"

parser.dispatcher.addListener("status", myCallback) // bind myCallback to grbl status reports
parser.parseData(myString)

Message types

Use these to bind to specific message types

"status",
"success",
"initialize",
"alarm",
"error",
"setting",
"feedbackMessage",
"buildVersion",
"buildOptions",
"gcodeState",
"helpMessage",
"gcodeSystem",
"probeResult",
"echoMessage",
"gcodeStartup",
"unknown"

You can get all message types:

console.log(new GrblParser().messageTypes)
// [ status: "status", alarm: "alarm", ... ]

Examples

Bind callback to message types

parser.dispatcher.addListener("status", myStatusCallback)
parser.dispatcher.addListener("alarm", myAlarmCallback)
parser.dispatcher.addToAllListeners(myEverythingCallback)

Status message output

parser.parseData("<Hold:0|MPos:0.000,0.000,0.000|Bf:15,128|FS:675.5,24000|Ov:120,100,100|WCO:0.000,-5.200,306.351|A:SFM>")

{
  data: {
    machinePosition: {
      x: 0,
      y: 0,
      z: 0
    },
    buffer: {
      availableBlocks: 15,
      availableRXBytes: 128
    },
    realtimeFeed: {
      realtimeFeedrate: 675.5,
      realtimeSpindle: 24000
    },
    workcoordinateOffset: {
      x: 0,
      y: -5.2,
      z: 306.351
    },
    status: {
      code: 0,
      message: "Hold complete. Ready to resume.",
      state: 'Hold'
    },
    override: {
      feeds: 120,
      rapids: 100,
      spindle: 100
    },
    accessories: {
      flood: true,
      mist: true,
      spindleDirection: 'clockwise'
    }
  },
  type: "status",
  input: "<Hold:0|MPos:0.000,0.000,0.000|Bf:15,128|FS:675.5,24000|Ov:120,100,100|WCO:0.000,-5.200,306.351|A:SFM>"
}

parser.parseData("error:20")

{
  data: {
    code: "20",
    message: "Unsupported or invalid g-code command found in block."
  },
  input: "error:20",
  type: "error"
}

Other links

• In-browser example
• grbl
• node-serialport