Port:write()

Port:write(data)method

Writes data to the serial communication Port.

Parameters

data

A Buffer or a string containing the data to be written. If another type of variable is used, it is internaly converted to a string before sending.

Return value

Returns a Task object to perform the write operation asynchronously.
Once the Task has terminated, it will return the number of bytes written, 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:write("First message") then
    print("Data successfully written")
  else
    print("Write error")
  end
else
  print("Failed to open COM1 serial port")
end