Southco EA-A06-01 USB Controller

latch.js

const SerialPort = require('serialport')

const port = new SerialPort('/dev/ttyUSB0', {
  baudRate: 38400,
  dataBits: 8,
  stopBits: 1,
  parity: 'none'
})

const parseBufPayload = data => data.toString().replace(/[^a-zA-Z0-9]/gi, '')

function write (cmd, lockNum = '', delay = 0, cb = function () {}) {
  setTimeout(function () {
    port.flush(function (err) {
      if (err) console.log('Flush err', err.message)
      port.write(`${cmd}${lockNum}\r`, err => {
        if (err) console.log('Error on write: ', err.message)
        cb()
      })
    })
  }, delay)
}

port.on('data', function (data) {
  let parsed = parseBufPayload(data)
  console.log('PAYLOAD', parsed)
})

port.on('error', function(err) {
  console.log('Error: ', err.message)
})

// changes status mode for monitoring latch status
// write('changemode')

// toggle power to all latches
// write('power')

// write a command, the lock number, and then optional delay
write('status', 1, 0)
write('open', 1, 1000)
write('status', 1, 5000)
write('close', 1, 10000)
write('status', 1, 15000, function () {
  process.exit(0)
})