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def RemoteMain(to_arduino_q, to_parent_q, shutdown):
  """Main process for controlling the arduino-based remote control.

  Takes various data from the messageboard and formats it for display on the alphanumeric
  display on the remote control; provides latest configuration; and executes any commands
  such as histogram requests or setting updates.
  """
  sys.stderr = open(messageboard.STDERR_FILE, 'a')

  Log('Process started with process id %d' % os.getpid())

  # Ensures that the child can exit if the parent exits unexpectedly
  # docs.python.org/2/library/multiprocessing.html#multiprocessing.Queue.cancel_join_thread
  to_arduino_q.cancel_join_thread()
  to_parent_q.cancel_join_thread()

  #pylint: disable = bad-whitespace
  read_config = (
      # when confirmed is true, this is a command; when false, this is a heartbeat
      ('confirmed',                   '?'),
      ('setting_screen_enabled_bool', '?'),
      ('setting_max_distance',        'H'),
      ('setting_max_altitude',        'L'),
      ('setting_on_time',             'H'),
      ('setting_off_time',            'H'),
      ('setting_delay',               'H'),
      ('last_plane',                  '?'),
      ('display_mode',                'H'),
      ('histogram_enabled',           '?'),
      ('current_hist_type',           'H'),
      ('current_hist_history',        'H'),
      ('low_battery',                 '?'))

  write_config = (
      ('setting_screen_enabled',      '?'),  # 1 bytes
      ('setting_max_distance',        'H'),  # 2 bytes
      ('setting_max_altitude',        'L'),  # 4 bytes
      ('setting_on_time',             'H'),  # 2 bytes
      ('setting_off_time',            'H'),  # 2 bytes
      ('setting_delay',               'H'),  # 2 bytes
      ('line1',                       '9s'), # 9 bytes; 8 character plus terminator
      ('line2',                       '9s'), # 9 bytes; 8 character plus terminator
      ('line1_dec_mask',              'H'),  # 2 bytes
      ('line2_dec_mask',              'H'),  # 2 bytes
      ('display_mode',                'H'),  # 2 bytes
  )
  #pylint: enable = bad-whitespace
  read_keys, unused_read_format_tuple, read_format_string = SplitFormat(read_config)
  write_keys, write_format_tuple, write_format_string = SplitFormat(write_config)

  values_d = {}
  low_batt = False
  to_parent_q.put(('pin', (messageboard.GPIO_ERROR_BATTERY_CHARGE, low_batt)))

  link = Serial(
      *REMOTE_CONNECTION, read_timeout=7,
      error_pin=messageboard.GPIO_ERROR_ARDUINO_REMOTE_CONNECTION, to_parent_q=to_parent_q,
      read_format=read_format_string, write_format=write_format_string, name='Remote')
  link.Open()

  # Read in the saved display mode, if it exists
  display_mode = messageboard.ReadFile(REMOTE_DISPLAY_MODE, log_exception=False)
  if not display_mode:
    display_mode = DISP_LAST_FLIGHT_NUMB_ORIG_DEST
  else:




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def RemoteMain(to_arduino_q, to_parent_q, shutdown):
  """Main process for controlling the arduino-based remote control.

  Takes various data from the messageboard and formats it for display on the alphanumeric
  display on the remote control; provides latest configuration; and executes any commands
  such as histogram requests or setting updates.
  """
  sys.stderr = open(messageboard.STDERR_FILE, 'a')

  Log('Process started with process id %d' % os.getpid())

  # Ensures that the child can exit if the parent exits unexpectedly
  # docs.python.org/2/library/multiprocessing.html#multiprocessing.Queue.cancel_join_thread
  to_arduino_q.cancel_join_thread()
  to_parent_q.cancel_join_thread()

  #pylint: disable = bad-whitespace
  read_config = (
      # when confirmed is true, this is a command; when false, this is a heartbeat
      ('confirmed',              '?'),
      ('setting_screen_enabled', '?'),
      ('setting_max_distance',   'H'),
      ('setting_max_altitude',   'L'),
      ('setting_on_time',        'H'),
      ('setting_off_time',       'H'),
      ('setting_delay',          'H'),
      ('last_plane',             '?'),
      ('display_mode',           'H'),
      ('histogram_enabled',      '?'),
      ('current_hist_type',      'H'),
      ('current_hist_history',   'H'),
      ('low_battery',            '?'))

  write_config = (
      ('setting_screen_enabled', '?'),  # 1 bytes
      ('setting_max_distance',   'H'),  # 2 bytes
      ('setting_max_altitude',   'L'),  # 4 bytes
      ('setting_on_time',        'H'),  # 2 bytes
      ('setting_off_time',       'H'),  # 2 bytes
      ('setting_delay',          'H'),  # 2 bytes
      ('line1',                  '9s'), # 9 bytes; 8 character plus terminator
      ('line2',                  '9s'), # 9 bytes; 8 character plus terminator
      ('line1_dec_mask',         'H'),  # 2 bytes
      ('line2_dec_mask',         'H'),  # 2 bytes
      ('display_mode',           'H'),  # 2 bytes
  )
  #pylint: enable = bad-whitespace
  read_keys, unused_read_format_tuple, read_format_string = SplitFormat(read_config)
  write_keys, write_format_tuple, write_format_string = SplitFormat(write_config)

  values_d = {}
  low_batt = False
  to_parent_q.put(('pin', (messageboard.GPIO_ERROR_BATTERY_CHARGE, low_batt)))

  link = Serial(
      *REMOTE_CONNECTION, read_timeout=7,
      error_pin=messageboard.GPIO_ERROR_ARDUINO_REMOTE_CONNECTION, to_parent_q=to_parent_q,
      read_format=read_format_string, write_format=write_format_string, name='Remote')
  link.Open()

  # Read in the saved display mode, if it exists
  display_mode = messageboard.ReadFile(REMOTE_DISPLAY_MODE, log_exception=False)
  if not display_mode:
    display_mode = DISP_LAST_FLIGHT_NUMB_ORIG_DEST
  else:




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