我正在尝试在我的simulink模型或m文件和我的C ++应用程序之间建立链接，但我遇到了问题。我真的不明白matlab是如何接收数据的，以及我应该以哪种形式将数据发送到块中的simulink？我想将像xyz这样的坐标发送到matlab，并使用matlab散布3实时坐标流。有可能吗？
这是C ++提取代码:(抱歉评论是法语）
/* Démarrage du listage (mode server) */
sock_err = listen(sock, 5);
printf("Listage du port %d...\n", PORT);
/* Si la socket fonctionne */
if(sock_err != SOCKET_ERROR)
{
/* Attente pendant laquelle le client se connecte */
printf("Patientez pendant que le client se connecte sur le port %d...\n", PORT);
csock = accept(sock, (SOCKADDR*)&csin, &recsize);
printf("Un client se connecte avec la socket %d de %s:%d\n", csock, inet_ntoa(csin.sin_addr), htons(csin.sin_port));
// double buff = 25;
mxArray *datasend;
datasend = mxCreateDoubleMatrix(1, 1, mxREAL);
mlfPrintmatrix(datasend);
sock_err = send(csock, T, 3*sizeof(double), 0);
if(sock_err != SOCKET_ERROR)
printf("Send : %s\n", buffer[0]);
//printf("send : [10 20 30]");
else
printf("Erreur de transmission\n");
/* Il ne faut pas oublier de fermer la connexion (fermée dans les deux sens) */
shutdown(csock, 2);
}
Simulink错误：
Error evaluating registered method 'Outputs' of M-S-Function 'stcpiprb' in 'trajectory2/TCP//IP Receive'. The specified amount of data was not returned within the Timeout period.
Please ensure that data is being sent to the specified port or specify a greater timeout value.
The specified amount of data was not returned within the Timeout period.
Please ensure that data is being sent to the specified port or specify a greater timeout value.
simulink模型：
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Block {
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System {
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ModelBrowserVisibility off
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# Finite State Machines
#
# Stateflow Version 7.1 (R2009a) dated Jul 17 2009, 00:35:51
#
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Stateflow {
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scope INPUT_DATA
machine 1
props {
array {
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type {
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complexity SF_COMPLEX_INHERITED
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dataType "Inherit: Same as Simulink"
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instance {
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machine 1
chart 2
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target {
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name "sfun"
description "Default Simulink S-Function Target."
machine 1
linkNode [1 0 0]
}
}
答案 0 :(得分：1)
我无法在C代码中看到创建套接字和绑定它。你确定你绑定在127.0.0.1和端口80上吗？你确定端口80上的服务器上没有运行某些apache吗？
http://www.linuxhowtos.org/C_C++/socket.htm
此外：
sock_err = send(csock, T, 3*sizeof(double), 0);
我的代码中也没有看到T，这可能不是问题，但它似乎不是mxArray的数据和指针。