Port:read()

Port:read(len)method

Reads data from the serial communication Port.

Parameters

len

A number indicating the number of bytes to read.

Return value

Returns a Task object to perform the read operation asynchronously.
Once the Task has terminated, it will return a Buffer that contains the data, or false in case of error.

Example


--! luart-extensions
import serial

local COM1 = serial.Port("COM1")
if COM1:open() then
  print("COM1 serial port is now open")
  if await COM1:read(5) then
    print("5 bytes successfully received")
  else
    print("Read error")
  end
else
  print("Failed to open COM1 serial port")
end