startup

local chanrec = 0
modem = peripheral.wrap("bottom")
sg = peripheral.wrap("top")

while true do
  term.write("Ecoute sur le channel : "..chanrec)
  modem.open(chanrec)
  local event, modemSide, senderChannel, replyChannel, message, senderDistance = os.pullEvent("modem_message")
  if message == "open" then
    sg.openIris()
    sleep(2)
  elseif message == "close" then
  sg.closeIris()
  sleep(2)
  else
    sleep(0.5)
  end
end