“UTF-8”编解码器不能在位置6解码字节0xc4：数据

Question

我与Python上树莓PI编码意外结束2.

我试图通过发送几个数量级到两个设备蓝牙在同一时间，但它不工作。

根据错误消息，当我向第二个设备发送订单时，我无法解码响应。我已经尝试过用“UTF-8”编码，但它也不能工作......

以下是错误消息：

Traceback (most recent call last): 
    File "/home/pi/Desktop/Bluetooth-master/Bluetooth-master/rfcommcli.py", line 60, in <module> 
    StartBTClient() 
    File "/home/pi/Desktop/Bluetooth-master/Bluetooth-master/rfcommcli.py", line 54, in StartBTClient 
    print('reception 2 : ', rec2.decode()) 
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc4 in position 6: unexpected end of data 

所以你能帮助我，请。

下面是代码：

import bluetooth 


class BT(object): 

    address_2 = ('00:04:3E:93:39:A9') 
    address_1 = ('00:04:3E:6A:10:A9') 

    def __init__(self): 
     self.btSocket = bluetooth.BluetoothSocket(bluetooth.RFCOMM) 

    def __exit__(self): 
     self.Disconnect() 

    def Connect(self, mac, port=1): 
     self.btSocket.connect((mac, port)) 
     print('Connecter') 

    def Disconnect(self): 
     try: 
      self.btSocket.close() 
     except Exception: 
      pass 

    def Send(self, data): 
     self.btSocket.send(data.encode()) 

    def Receive(self, size=1024): 
     return self.btSocket.recv(size) 


def StartBTClient(): 
    cli = BT() 
    print('BT1 Connexion en cours ...') 
    #cli.Discover() 
    cli.Connect(cli.address_1, 0o01) 

    cli2 = BT() 
    print('BT2 Connexion en cours ...') 
    #cli.Discover() 
    cli2.Connect(cli2.address_2, 0o02) 
    print('Donner un ordre ... (ordre shutter)') 

    while True: 
     data = input() 
     if (data == 'exit'): 
      break 
     cli.Send("read\r") 
     cli2.Send("read\r") 
     rec = cli.Receive() 
     rec2 = cli2.Receive() 
     print('reception 1 : ', rec.decode()) 
     print('reception 2 : ', rec2.decode()) 

    cli.Disconnect() 
    cli2.Disconnect() 

if __name__ == '__main__': 
    StartBTClient() 

Answer 1

显然设备＃2与一些响应，但不是全部的UTF-8编码的值的字节。

在尝试解码消息之前，您需要确保已收到并汇编消息的所有字节。这可能涉及多次呼叫.recv()。