在 python3 asyncio 中使用串口

2022-01-18 00:00:00 python python-3.4 python-asyncio pyserial serial-port

问题描述

我正在尝试，到目前为止，未能使用 python asyncio 访问串行端口.

i'm trying and, so far, failing to use python asyncio to access a serial port.

我非常感谢在简单 fd 上使用新的 python 异步框架的任何提示.

i'd really appreciate any tips on using the new python async framework on a simple fd.

干杯！

詹姆斯

解决方案

使用FD的另一种方式

import asyncio
import serial

s = serial.Serial('/dev/pts/13', 9600)


def test_serial():
    '''
    read a line and print.
    '''
    text = ""
    msg = s.read().decode()
    while (msg != '
'):
        text += msg
        msg = s.read().decode()
    print(text)
    loop.call_soon(s.write, "ok
".encode())

loop = asyncio.get_event_loop()
loop.add_reader(s, test_serial)
try:
    loop.run_forever()
except KeyboardInterrupt:
    pass
finally:
    loop.close()

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