Cross platform bluetooth terminal with Python serial asyncio - Blog: https://avilpage.com/2020/08/bluetooth-terminal-python-asyncio.html

client.py

import sys
import asyncio
import datetime as dt

import serial_asyncio
import aioconsole


async def echo(writer):
    stdin, stdout = await aioconsole.get_standard_streams()
    async for line in stdin:
        data = line.strip()
        if not data:
            continue
        now = str(dt.datetime.now())
        print(f'{now} Tx ==> {data.decode()}')
        writer.write(line)


async def recv(r):
    while True:
        data = await r.readuntil(b'\n')
        now = str(dt.datetime.now())
        print(f'{now} Rx <== {data.strip().decode()}')


async def main(port, baudrate):
    reader, writer = await serial_asyncio.open_serial_connection(url=port, baudrate=baudrate)

    pecho = echo(writer)
    received = recv(reader)

    await asyncio.wait([pecho, received])


port = sys.argv[1]
try:
    baudrate = sys.argv[2]
except:
    baudrate = 9600


loop = asyncio.get_event_loop()
loop.run_until_complete(main(port, baudrate))
loop.close()

# Usage

$ python client.py /dev/cu.Bluetooth-Incoming-Port 9600
ping from mac
2020-09-03 20:57:39.362403 Tx ==> ping from mac

2020-09-03 20:57:41.912708 Rx <== ping from android