w = peripheral.wrap("left")

function split(string, delimiter)
  local result = { }
  local from = 1
  local delim_from, delim_to = string.find( string, delimiter, from )
  while delim_from do
    table.insert( result, string.sub( string, from , delim_from-1 ) )
    from = delim_to + 1
    delim_from, delim_to = string.find( string, delimiter, from )
  end
  table.insert( result, string.sub( string, from ) )
  return result
end
function printTable(table)
  for k, v in pairs(table) do
    print(k, v)
  end
end
function msg()
  w.open(1)
  local event, message = os.pullEvent("modem_message")

  split(message, ",")

end