Question

我正在使用java类通过matlab tcp（以太网电缆）与机器人手臂进行通信。它运行良好我发送一些整数值并接收。问题是当我尝试在linux上工作时我无法连接。我不认为问题出在代码上，但我仍然分享我的代码和matlab输出。（我用sudo权限打开matlab。）

host         = '169.254.131.130';
port         = 10300;
int32 roll
roll         = 457;
int32 a;
int32 b;
int32 c;
int32 d;
%% Socket connection

    javaaddpath('tcpip');
    import java.net.Socket
    import java.io.*
    inputSocket = [];

while true
       try
            fprintf(1, 'Connecting to %s:%d\n', host, port);
            % throws if unable to connect
            inputSocket = Socket(host, port);
            fprintf(1, 'Connected to server\n');
            break;
        catch
            if ~isempty(inputSocket)
                inputSocket.close;
            end
            pause(1);
        end
end

 %% read data from the socket
input_stream   = inputSocket.getInputStream;
d_input_stream = DataInputStream(input_stream);
bytes_available = input_stream.available;
tic
for i = (1:100)

 output_stream = inputSocket.getOutputStream; 
 d_output_stream = DataOutputStream(output_stream);
 d_output_stream.writeInt(i); 
 d_output_stream.flush;
 %pause(0.01);

while (bytes_available == 0)
    bytes_available = input_stream.available;
end

fprintf(1, 'Reading %d bytes\n',bytes_available);
data_reader = DataReader(d_input_stream);
message = int32(data_reader.readBuffer(4));
if message(4) < 0
    message(4) = message(4) + 256;
end
result = message(1) * 2^24 + message(2) * 2^16 + message(3) * 2^8 + message(4)
bytes_available = 0;
end
toc

MATLAB输出

Connecting to 169.254.131.130:10300
Connecting to 169.254.131.130:10300
Connecting to 169.254.131.130:10300
Connecting to 169.254.131.130:10300
Connecting to 169.254.131.130:10300
Connecting to 169.254.131.130:10300
Connecting to 169.254.131.130:10300
Connecting to 169.254.131.130:10300
Connecting to 169.254.131.130:10300
Connecting to 169.254.131.130:10300
Connecting to 169.254.131.130:10300

一次又一次

Linux matlab tcp无法连接

0 个答案: