Simple Example Socket Code for Lua (Linux)

TIME = {}

DATA = {}

ETX_CHAR = "\r\n\r\n"

COMMAND = "*IDN?" .. ETX_CHAR

local socket = require("socket")

SMU = socket.connect("192.168.0.21", 5025)

SMU:send(COMMAND)

packet = ""

while true do

  recv  = SMU:receive(1)

  if recv == "\n" then

    break

  end

  packet = packet .. recv

end

print(packet)

COMMAND = "smua.measure.delayfactor = 0.1" .. ETX_CHAR

SMU:send(COMMAND)

COMMAND = "smua.source.output = 1" .. ETX_CHAR

SMU:send(COMMAND)

for i = 1, 100, 1 do

  t1 = socket.gettime()

  COMMAND = "print(smua.measure.i())" .. ETX_CHAR

  SMU:send(COMMAND)

  packet = ""

  while true do

    recv = SMU:receive(1)

    if recv == "\n" then

      break

    end

    packet = packet .. recv

  end

  t2 = socket.gettime()

  TIME[i] = t2 - t1

  DATA[i] = packet

end

COMMAND = "smua.source.output = 0" .. ETX_CHAR

SMU:send(COMMAND)

for i = 1, 100, 1 do

  print("TIME : " .. TIME[i] .. " , " .. "CURRENT : " .. DATA[i])

end

SMU:close()