File content as of revision 0:f7caac9b804e:

#include "mbed.h"
#include "w5100.h"
#include "UDPSocket.h"
#include "ipaddr.h"

extern W5100Class W5100;
Serial pc(D1, D0);
Timer sendStatusTimer;
Timer pollUDPTimer;
UDPSocket testsocket1(0);

void exFunction(UDPSocketEvent var)
{
    char buf[1000];
    int len=0;
    int rcvPort = 0;
    uint8_t mac[6];
    int udpPort = 33;

    // empfangene Daten anzeigen
    len = testsocket1.recvfrom(buf, sizeof(buf) , mac, &rcvPort);
    pc.printf("\n========\nNachricht von : %d.%d.%d.%d:%d\n", mac[0], mac[1], mac[2], mac[3], rcvPort);
    buf[len]=0; // letztes Zeichen eine null, damit es das Stringende erkannt wird
    pc.printf("%s\n", buf);

    // empfangene Daten zurücksenden
    testsocket1.sendto(buf, len, mac, udpPort);
}

int main()
{
    char buf[1000];
    int len;
    int udpPort=33;
    int rcvPort = 0;
    
    IpAddr localhost(192,168,1,68);
    IpAddr netmask(255,255,255,0);
    IpAddr gateway(192,168,1,1);
    IpAddr tempIP;

    // Serielle Schnittstelle initialisieren
    pc.baud(115200);

    // Initialisieren des Ethernetinterfaces
    pc.printf("Etbernet initialisieren.\n");
    W5100.hardware_reset();
    W5100.init();

    uint8_t mac[6] = {0x00,0x00,0x5e,0x00,0x01,0x01};
    W5100.setMACAddress(mac);

    pc.printf("Start: HW Addr is : %02x:%02x:%02x:%02x:%02x:%02x.\n", mac[0],mac[1],mac[2],mac[3],mac[4],mac[5]);

    uint8_t u[4];
    /*u[0] = 192;
    u[1] = 168;
    u[2] = 1;
    u[3] = 66;
    */
    localhost.getIP(u);
    W5100.setIPAddress(u);

    /*u[0] = 255;
    u[1] = 255;
    u[2] = 255;
    u[3] = 0;
    */
    netmask.getIP(u);
    W5100.setSubnetMask(u);

    /*u[0] = 192;
    u[1] = 168;
    u[2] = 2;
    u[3] = 1;
    */
    gateway.getIP(u);
    W5100.setGatewayIp(u);

    // init testSocket
    int socketNr = 0;
    testsocket1.bind(&exFunction, udpPort);

    // Sendetimer starten (und anschließend per Polling abfragen)
    pc.printf("Sendetimer starten.\n");
    sendStatusTimer.start();
    pollUDPTimer.start();

    while(1) {

        // nach Ablauf der Wartezeit die STatusinformationen per Serieller Schnittstelle senden
        if (sendStatusTimer.read_ms() >= 2000) {
            sendStatusTimer.reset();    // Timer schnellst möglich neu starten

            pc.printf("\n----------------------------------------------------.\n");

            W5100.getMACAddress(mac);
            pc.printf("MAC Addr is : %02d:%02d:%02d:%02d:%02d:%02d.\n", mac[0],mac[1],mac[2],mac[3],mac[4],mac[5]);

            W5100.getIPAddress(mac);
            pc.printf("IP Addr is : %d.%d.%d.%d\n", mac[0],mac[1],mac[2],mac[3]);

            W5100.getGatewayIp(mac);
            pc.printf("GW Addr is : %d.%d.%d.%d\n", mac[0],mac[1],mac[2],mac[3]);


            printf("socket:%d SnMR:%02x SnIR:%02x SnSR:%02x\n", socketNr,
                   W5100.readSnMR(socketNr), W5100.readSnIR(socketNr), W5100.readSnSR(socketNr));

            W5100.readSnDIPR(socketNr, mac);
            pc.printf("Sn_DIPR: %d.%d.%d.%d Sn_DPORT: %d\n", mac[0], mac[1], mac[2], mac[3], W5100.readSnDPORT(socketNr));

            W5100.readSnDHAR(socketNr, mac);
            pc.printf("Sn_DHAR: %02x:%02x:%02x:%02x:%02x:%02x\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);

            pc.printf("Sn_RX_RSR:%d, Sn_RX_RD:%d, Sn_RX_WR:%d\n",
                      W5100.readSnRX_RSR(socketNr), W5100.readSnRX_RD(socketNr), W5100.readSnRX_WR(socketNr));

            pc.printf("Sn_TX_FSR:%d, Sn_TX_RD:%d, Sn_TX_WR:%d\n",
                      W5100.readSnTX_FSR(socketNr), W5100.readSnTX_RD(socketNr), W5100.readSnTX_WR(socketNr));

        }



        if (pollUDPTimer.read_ms() >= 200) {
            pollUDPTimer.reset();
            len = testsocket1.poll();
            if (len > 0) {

                // empfangene Daten anzeigen
                testsocket1.recvfrom(buf, len , mac, &rcvPort);
                pc.printf("\n========\nNachricht von : %d.%d.%d.%d:%d\n", mac[0], mac[1], mac[2], mac[3], rcvPort);
                buf[len]=0;
                pc.printf("%s\n", buf);

                // empfangene Daten zurücksenden
                testsocket1.sendto(buf, len, mac, udpPort);
            }
        }

    }
}