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var _ = require('underscore')
var serialport = require("serialport")
var SerialPort = serialport.SerialPort
var serialPort = new SerialPort("/dev/tty.SLAB_USBtoUART", {
  baudrate: 9600,
  stopBits: 1,
  parity: 'none',
  dataBits: 8,
  flowControl: false,
  parser: serialport.parsers.readline('\r\n')
});


serialPort.on('data', function(data) {
  var b = data.readUInt8(0);
});

serialPort.on("open", function () {
  serialPort.write([0x02], function(err, results) {
    console.log('writed', arguments)
  });
});