使用pyserial出现错误“ serial.serialutil.SerialException：[Errno 2]无法打开端口/ dev / rfcomm0”

Question

我想在python中与我的串口通信。 我为Linux安装了pyserial：

import thread
import serial
PORT = '/dev/rfcomm0'
BAUDRATE = 921600
TIMEOUT = 1  
port = serial.Serial(port=PORT, baudrate=BAUDRATE, timeout=TIMEOUT)
port.open()
...
port.close()

它给出以下错误：

Traceback (most recent call last):
  File "/home/dnaphone/PycharmProjects/test/BluetoothClient.py", line 12, in <module>
    port = serial.Serial(port=PORT, baudrate=BAUDRATE, timeout=TIMEOUT)
  File "/usr/local/lib/python2.7/dist-packages/serial/serialutil.py", line 182, in __init__
    self.open()
  File "/usr/local/lib/python2.7/dist-packages/serial/serialposix.py", line 247, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 2] could not open port /dev/rfcomm0: [Errno 2] No such file or directory: '/dev/rfcomm0'

Answer 1

只有您必须这样做：

sudo chmod 777 /dev/rfcomm0 

它已经解决了