open_bci_v3.py 文件源码

def find_port(self):
    # Finds the serial port names
    if sys.platform.startswith('win'):
      ports = ['COM%s' % (i+1) for i in range(256)]
    elif sys.platform.startswith('linux') or sys.platform.startswith('cygwin'):
      ports = glob.glob('/dev/ttyUSB*')
    elif sys.platform.startswith('darwin'):
      ports = glob.glob('/dev/tty.usbserial*')
    else:
      raise EnvironmentError('Error finding ports on your operating system')
    openbci_port = ''
    for port in ports:
      try:
        s = serial.Serial(port= port, baudrate = self.baudrate, timeout=self.timeout)
        s.write(b'v')
        openbci_serial = self.openbci_id(s)
        s.close()
        if openbci_serial:
          openbci_port = port;
      except (OSError, serial.SerialException):
        pass
    if openbci_port == '':
      raise OSError('Cannot find OpenBCI port')
    else:
      return openbci_port