main.cpp

00001 
00002 #include "mbed.h"
00003 #include "EthernetNetIf.h"
00004 #include "TCPSocket.h"
00005 
00006 DigitalOut led4(LED4, "led4");
00007 
00008 //EthernetNetIf eth;
00009 EthernetNetIf eth(
00010   IpAddr(192,168,1,110), //IP Address
00011   IpAddr(255,255,255,0), //Network Mask
00012   IpAddr(192,168,1,1), //Gateway
00013   IpAddr(192,168,1,1)  //DNS
00014 );
00015 
00016 #define TCP_LISTENING_PORT 12345
00017 
00018 TCPSocket ListeningSock;
00019 TCPSocket* pConnectedSock; // for ConnectedSock
00020 Host client;
00021 TCPSocketErr err;
00022 
00023 void onConnectedTCPSocketEvent(TCPSocketEvent e)
00024 {
00025    switch(e)
00026     {
00027     case TCPSOCKET_CONNECTED:
00028         printf("TCP Socket Connected\r\n");
00029         break;
00030     case TCPSOCKET_WRITEABLE:
00031       //Can now write some data...
00032         //printf("TCP Socket Writable\r\n");
00033         break;
00034     case TCPSOCKET_READABLE:
00035       //Can now read dome data...
00036         //printf("TCP Socket Readable\r\n");
00037        // Read in any available data into the buffer
00038        char buff[128];
00039        while ( int len = pConnectedSock->recv(buff, 128) ) {
00040        // And send straight back out again
00041            pConnectedSock->send(buff, len);
00042            buff[len]=0; // make terminater
00043            printf("Received from and sent back to client:%s\r\n",buff);
00044        }
00045        break;
00046     case TCPSOCKET_CONTIMEOUT:
00047         printf("TCP Socket Timeout\r\n");
00048         break;
00049     case TCPSOCKET_CONRST:
00050         printf("TCP Socket CONRST\r\n");
00051         break;
00052     case TCPSOCKET_CONABRT:
00053         printf("TCP Socket CONABRT\r\n");
00054         break;
00055     case TCPSOCKET_ERROR:
00056         printf("TCP Socket Error\r\n");
00057         break;
00058     case TCPSOCKET_DISCONNECTED:
00059     //Close socket...
00060         printf("TCP Socket Disconnected\r\n");        
00061         pConnectedSock->close();
00062         break;
00063     default:
00064         printf("DEFAULT\r\n"); 
00065       }
00066 }
00067 
00068 
00069 void onListeningTCPSocketEvent(TCPSocketEvent e)
00070 {
00071     switch(e)
00072     {
00073     case TCPSOCKET_ACCEPT:
00074         printf("Listening: TCP Socket Accepted\r\n");
00075         // Accepts connection from client and gets connected socket.   
00076         err=ListeningSock.accept(&client, &pConnectedSock);
00077         if (err) {
00078             printf("onListeningTcpSocketEvent : Could not accept connection.\r\n");
00079             return; //Error in accept, discard connection
00080         }
00081         // Setup the new socket events
00082         pConnectedSock->setOnEvent(&onConnectedTCPSocketEvent);
00083         // We can find out from where the connection is coming by looking at the
00084         // Host parameter of the accept() method
00085         IpAddr clientIp = client.getIp();
00086         printf("Listening: Incoming TCP connection from %d.%d.%d.%d\r\n", 
00087            clientIp[0], clientIp[1], clientIp[2], clientIp[3]);
00088        break;
00089     // the following cases will not happen
00090     case TCPSOCKET_CONNECTED:
00091         printf("Listening: TCP Socket Connected\r\n");
00092         break;
00093     case TCPSOCKET_WRITEABLE:
00094         printf("Listening: TCP Socket Writable\r\n");
00095         break;
00096     case TCPSOCKET_READABLE:
00097         printf("Listening: TCP Socket Readable\r\n");
00098         break;
00099     case TCPSOCKET_CONTIMEOUT:
00100         printf("Listening: TCP Socket Timeout\r\n");
00101         break;
00102     case TCPSOCKET_CONRST:
00103         printf("Listening: TCP Socket CONRST\r\n");
00104         break;
00105     case TCPSOCKET_CONABRT:
00106         printf("Listening: TCP Socket CONABRT\r\n");
00107         break;
00108     case TCPSOCKET_ERROR:
00109         printf("Listening: TCP Socket Error\r\n");
00110         break;
00111     case TCPSOCKET_DISCONNECTED:
00112     //Close socket...
00113         printf("Listening: TCP Socket Disconnected\r\n");        
00114         ListeningSock.close();
00115         break;
00116     default:
00117         printf("DEFAULT\r\n"); 
00118      };
00119 }
00120 
00121 
00122 int main() {
00123   printf("\r\n");
00124   printf("Setting up...\r\n");
00125   EthernetErr ethErr = eth.setup();//initialisation of ethernet stack
00126   if(ethErr)
00127   {
00128     printf("Error %d in setup.\r\n", ethErr);
00129     return -1;
00130   }
00131   printf("Setup OK\r\n");
00132 
00133   IpAddr ip = eth.getIp();
00134   printf("mbed IP Address is %d.%d.%d.%d\r\n", ip[0], ip[1], ip[2], ip[3]);//address of server
00135 
00136   
00137   // Set the callbacks for Listening
00138   ListeningSock.setOnEvent(&onListeningTCPSocketEvent); 
00139   
00140   // bind and listen on TCP
00141   err=ListeningSock.bind(Host(IpAddr(), TCP_LISTENING_PORT));
00142   printf("Binding..\r\n");
00143   
00144   if(err)
00145   {
00146    //Deal with that error...
00147     printf("Binding Error\n");
00148   }
00149    err=ListeningSock.listen(); // Starts listening
00150    printf("Listening...\r\n");
00151    if(err)
00152    {
00153     printf("Listening Error\r\n");
00154    }
00155  
00156   Timer tmr;
00157   tmr.start();
00158   
00159   while(true)
00160   {
00161     Net::poll();
00162     if(tmr.read() > 4) // sec
00163     {       
00164       led4=!led4; //Show that we are alive
00165       tmr.reset();
00166     }
00167   }  
00168 }