RS232

[JMM]

Code:

-- Fonction pour vérifier si le port est libre (sans lsof)
function isPortFree()
  local test_port = serial.open('/dev/RS232', {
    baudrate = 1200,
    databits = 7,
    stopbits = 1,
    parity = 'even',
    duplex = 'half'
  })
 
  if test_port then
    test_port:close()
    log("Port libre")
    return true
  else
    log("Port occupé ou inaccessible")
    return false
  end
end

isPortFree()

And error log :
test le port rs232 11.06.2025 10:45:53
User script:3: attempt to index global 'serial' (a nil value)
stack traceback:
User script:3: in function 'isPortFree'
User script:21: in main chunk