serial-device/transport/serial/__init__.py

import serial

from transport.base import TransportBase


class Transport(TransportBase):
    def __init__(self, config):
        super().__init__(config)
        self.ser = serial.Serial()
        self.ser.port = config["tty_name"]

        self.ser.open()
        self.ser.flushInput()
        self.ser.flushOutput()

        self.addr = None

    def write_line(self, cmd_str):
        self.ser.write(str.encode(cmd_str + "\n"))
        return 1

    def read_line(self):
        buffer = self.ser.readline()
        return buffer.decode('utf-8').rstrip()

    def close(self):
        self.ser.close()