📦 parser-spacepacket

| npm | github |

import { SpacePacketParser } from '@serialport/parser-spacepacket'
// or
const { SpacePacketParser } = require('@serialport/parser-spacepacket')

A transform stream that emits data each time a complete, correctly formatted Space Packet is received. Configure the parser with the lengths of the Time Code Field and Ancillary Data Field. (These don't need to be present on every packet received; their presence should be indicated in the individual packet header; however their length should be standardized between the sender and receiver.)

The shape of each packet is as follows;

interface SpacePacket {
  header: {
    versionNumber: string | number
    identification: {
      apid: number
      secondaryHeader: number
      type: number
    }
    sequenceControl: {
      packetName: number
      sequenceFlags: number
    }
    dataLength: number
  }
  secondaryHeader?: {
    timeCode?: string
    ancillaryData?: string
  }
  data: string
}

Constructor Arguments

interface SpacePacketOptions extends Omit<TransformOptions, 'objectMode'> {
  /** The length of the Time Code Field in octets, if present */
  timeCodeFieldLength?: number
  /** The length of the Ancillary Data Field in octets, if present */
  ancillaryDataFieldLength?: number
}

Example

const { SerialPort } = require('serialport')
const { SpacePacketParser } = require('@serialport/parser-spacepacket')
const port = new SerialPort({ path: '/dev/ROBOT', baudRate: 14400 })

const parser = port.pipe(new SpacePacketParser({ timeCodeFieldLength: 8 }))
parser.on('data', console.log)
// emits data once a complete Space Packet has been received