RS232 serial read

[admin]

Code:

if not port then
  require('serial')
  port = serial.open('/dev/RS232', { baudrate = 9600 })
  port:flush()
  line = ''
end

char = port:read(1, 1)
if char then
  if char == '\r' then
    line = line:trim()
    alert(line)
    line = ''
  else
    line = line .. char
  end
end