python - ASCII 命令发送到蓝牙设备以使用 Python 接收数据

Question

我想将 hex cmd (0X2A,0X0A,0X58) 从树莓派发送到我的另一个蓝牙接口设备 (Arduino) 以接收传感器数据。当我使用 server.send(0X2A,0X0A,0X58) 时。它不起作用。所以如何发送该请求 cmd 以从蓝牙接收数据。我已经配对了我的蓝牙设备。

from bluetooth import 

server_sock=BluetoothSocket( RFCOMM )
server_sock.bind(("",PORT_ANY))
server_sock.listen(1)

port = server_sock.getsockname()[1]

uuid = "94f39d29-7d6d-437d-973b-fba39e49d4ee"

advertise_service( server_sock, "SampleServer",
                   service_id = uuid,
                   service_classes = [ uuid, SERIAL_PORT_CLASS ],
                   profiles = [ SERIAL_PORT_PROFILE ],
#                   protocols = [ OBEX_UUID ]
                    )

print "Waiting for connection on RFCOMM channel %d" % port

client_sock, client_info = server_sock.accept()
print "Accepted connection from ", client_info

try:
    while True:
        server.send(0X2A,0X0A,0X58)
        data = client_sock.recv(1024)
        if len(data) == 0: break
        print "received [%s]" % data
except IOError:
    pass

print "disconnected"
client_sock.close()

Answer 1

您可以将发送串行数据更改为，

1. server.send('\x2A\x0A\x58')或者
2. server.send('2A0A58'.decode("hex"))