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Port name issue
#1
I have a USB to M-Bus adapter(Prolific) connected to my LM5, via a powered USB-hub.
From time to time my LM stop receiving telegrams from the M-Bus adapter.
When I check the serial port name, in the system status window, the port name might have changed from  "/dev/ttyUSB0" to "/dev/ttyUSB1", and my script handling the data needs to be changed accordingly to work again....

Is it possible to connect to LM via telnet/ssh and give my device a static name with udev rules?
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#2
If you only have a single USB converter you can use a function to find port name:
Code:
function findttyusb()
  for _, dev in ipairs(io.ls('/dev')) do
    if dev:find('ttyUSB') then
      return '/dev/' .. dev
    end
  end
end

tty = findttyusb()

if tty then
  require('serial')
  port = serial.open(tty)
end
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