asyncio_arduino_read

#!/usr/bin/env python3

import asyncio
import serial


class ArduinoSerial():
    def __init__(self):
        """
        Open the serial port at 57600
        :return: Instance reference
        """
        self.arduino = serial.Serial("/dev/ttyACM1", 57600, timeout=.05, writeTimeout=None)

    @asyncio.coroutine
    def async_read_line(self):
        """
        This method keeps retrieving a line of text from the serial port
        :return: Should never return
        """
        try:
            while True:
                the_string = self.arduino.readline()
                print(the_string)
        except GeneratorExit:
            print("Should never get here.")

if __name__ == "__main__":

    # create an instance of the ArduinoSerial class
    the_board = ArduinoSerial()

    # get the event loop
    loop = asyncio.get_event_loop()

    # create an asyncio Task to read serial data
    asyncio.Task(the_board.async_read_line())

    # start the loop
    try:
        loop.run_forever()
        loop.close()
    except serial.SerialException():
        pass