text: #!/usr/bin/env node
  
  /*
   * Author: Brendan Le Foll <brendan.le.foll@intel.com>
   * Copyright (c) 2015 Intel Corporation.
   *
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sublicense, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * The above copyright notice and this permission notice shall be
   * included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
   * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
   * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
   * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  var m = require('mraa'); //require mraa
  
  // helper function to go from hex val to dec
  function char(x) { return parseInt(x, 16); }
  
  x = new m.Spi(0)
  buf = new Buffer(4)
  buf[0] = char('0xf4')
  buf[1] = char('0x2e')
  buf[2] = char('0x3e')
  buf[3] = char('0x4e')
  buf2 = x.write(buf)
  console.log("Sent: " + buf.toString('hex') + ". Received: " + buf2.toString('hex'))
  
  
  