Revision 0:61831b843b44, committed 2012-04-14

Comitter:

va009039

Date:

Sat Apr 14 17:21:11 2012 +0000

Child:

1:803123933c5a

Commit message:

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DHCPClient.cpp	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,151 @@
+// DHCPClient.cpp 2012/4/14
+// DHCP Client for WIZ820io(W5200)
+#include "mbed.h"
+#include "w5100.h"
+#include "UDPSocket.h"
+#include "DHCPClient.h"
+
+//#define DEBUG
+
+#ifdef DEBUG
+#include "Utils.h"
+#define PRINT_FUNC() printf("%p %d:%s\n", this,__LINE__,__PRETTY_FUNCTION__)
+#else //DEBUG
+#define PRINT_FUNC()
+#endif //DEBUG
+
+int DHCPClient::discover(uint8_t buf[], int size) {
+    memset(buf, 0x00, size);
+    const uint8_t headers[] = {0x01,0x01,0x06,0x00,
+                               0x12,0x34,0x56,0x78}; // xid
+    memcpy(buf, headers, sizeof(headers));
+    int t = clock();
+    xid[0] = t<<24;
+    xid[1] = t<<16;
+    xid[2] = t<<8;
+    xid[3] = t;
+    memcpy(buf+DHCP_OFFSET_XID, xid, 4);
+    W5100.getMACAddress(buf+DHCP_OFFSET_CHADDR);
+    const uint8_t options[] = {0x63,0x82,0x53,0x63, // magic cookie
+                               0x35,0x01,0x01, // DHCP DISCOVER
+                               0xff};
+    memcpy(buf+DHCP_OFFSET_MAGIC_COOKIE, options, sizeof(options));
+    uint8_t ip[4] = {0,0,0,0};
+    W5100.setIPAddress(ip);
+    return DHCP_OFFSET_MAGIC_COOKIE + sizeof(options);
+}
+
+int DHCPClient::request(uint8_t buf[], int size) {
+    memset(buf, 0x00, size);
+    const uint8_t headers[] = {0x01,0x01,0x06,0x00,
+                               0x12,0x34,0x56,0x78}; // xid
+    memcpy(buf, headers, sizeof(headers));
+    memcpy(buf+DHCP_OFFSET_XID, xid, 4);
+    memcpy(buf+DHCP_OFFSET_YIADDR, yiaddr, 4);
+    W5100.getMACAddress(buf+DHCP_OFFSET_CHADDR);
+    const uint8_t options[] = {0x63,0x82,0x53,0x63, // magic cookie
+                               0x35,0x01,0x03, // DHCP REQUEST
+                               0x32,0x04,0x00,0x00,0x00,0x00, // request IP
+                               0xff};
+    memcpy(buf+DHCP_OFFSET_MAGIC_COOKIE, options, sizeof(options));
+    memcpy(buf+DHCP_OFFSET_MAGIC_COOKIE+9, yiaddr, 4);
+    return DHCP_OFFSET_MAGIC_COOKIE + sizeof(options);
+}
+
+int DHCPClient::offer_ack(uint8_t buf[], int size) {
+    memcpy(yiaddr, &buf[DHCP_OFFSET_YIADDR], 4);   
+    uint8_t *p;
+    int msg_type = -1;
+    p = buf + DHCP_OFFSET_OPTIONS;
+    while(*p != 0xff && p < (uint8_t*)&buf[DHCP_MAX_PACKET_SIZE]) {
+        int code = *p++;
+        if (code == 0x00) {
+            continue;
+        }
+        int len = *p++;
+#ifdef DEBUG           
+        char codeStr[24];
+        snprintf(codeStr, sizeof(codeStr), "DHCP option: %d", code);
+        printfBytes(codeStr, p, len);
+#endif //DEBUG
+        if (code == 53) {
+           msg_type = *p;
+        } else if (code == 1) {
+            memcpy(netmask, p, 4); // Subnet mask address
+        } else if (code == 3) {
+            memcpy(gateway, p, 4); // Gateway IP address 
+        } else if (code == 6) {// DNS
+            memcpy(dnsaddr, p, 4);
+        }
+        p += len;
+    }
+    return msg_type;
+}
+
+bool DHCPClient::verify(uint8_t buf[], int len) {
+    if (len < DHCP_OFFSET_OPTIONS) {
+        return false;
+    }
+    if (buf[DHCP_OFFSET_OP] != 0x02) {
+        return false;
+    }
+    if (memcmp(buf+DHCP_OFFSET_XID, xid, 4) != 0) {
+        return false;
+    }
+    return true;
+}
+
+void DHCPClient::callback(UDPSocketEvent e)
+{
+    PRINT_FUNC();
+    uint8_t buf[DHCP_MAX_PACKET_SIZE];
+    Host host;
+    int len = m_udp->recvfrom((char*)buf, sizeof(buf), &host);
+    if (!verify(buf, len)) {
+        return;
+    }
+    int r = offer_ack(buf, len);
+    if (r == 2) { // OFFER
+        request(buf, 300);
+        Host server(IpAddr(255,255,255,255), 67); // DHCP broadcast
+        m_udp->sendto((char*)buf, 300, &server);
+    } else if (r == 5) { // ACK
+        exit_flag = true;
+    }
+}
+
+int DHCPClient::setup(int timeout_ms)
+{
+    PRINT_FUNC();   
+    Timer t;
+    t.start();
+    m_udp = new UDPSocket;
+    m_udp->setOnEvent(this, &DHCPClient::callback);
+    Host local(IpAddr(0,0,0,0), 68);
+    Host server(IpAddr(255,255,255,255), 67); // DHCP broadcast
+    m_udp->bind(local);
+    uint8_t buf[300];
+    discover(buf, sizeof(buf));
+    m_udp->sendto((char*)buf, sizeof(buf), &server);
+    exit_flag = false;
+    int err = 0;
+    while(1) {
+        Net::poll();
+        if (exit_flag) {
+            break;
+        }
+        if (t.read_ms() > timeout_ms) {
+            err = -1;
+            break;
+        }
+#ifdef DEBUG            
+        wait_ms(500);
+#endif //DEBUG
+    }
+    delete m_udp;
+    return err;
+}
+
+DHCPClient::DHCPClient() {
+    m_udp = NULL;
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DHCPClient.h	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,34 @@
+// DHCPClient.h 2012/4/13
+#ifndef DHCPCLIENT_H
+#define DHCPCLIENT_H
+#include "UDPSocket.h"
+
+
+#define DHCP_OFFSET_OP 0
+#define DHCP_OFFSET_XID 4
+#define DHCP_OFFSET_YIADDR 16
+#define DHCP_OFFSET_CHADDR 28
+#define DHCP_OFFSET_MAGIC_COOKIE 236
+#define DHCP_OFFSET_OPTIONS 240
+#define DHCP_MAX_PACKET_SIZE 600
+
+class DHCPClient {
+    int discover(uint8_t buf[], int size);
+    int request(uint8_t buf[], int size);
+    int offer_ack(uint8_t buf[], int size);
+    bool verify(uint8_t buf[], int len);
+public:
+    void callback(UDPSocketEvent e);
+    int setup(int timeout_ms = 15000);
+    DHCPClient();
+    uint8_t chaddr[6]; // MAC
+    uint8_t yiaddr[4]; // IP
+    uint8_t dnsaddr[4]; // DNS
+    uint8_t gateway[4];
+    uint8_t netmask[4];
+private:
+    UDPSocket* m_udp;
+    uint8_t xid[4];
+    bool exit_flag;
+};
+#endif //DHCPCLIENT_H

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EthernetNetIf.lib	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/sherckuith/code/EthernetNetIf/#479ce5546098

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MyNetDnsRequest.cpp	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,176 @@
+// MyNetDnsRequest.cpp 2012/4/13
+#include "mbed.h"
+#include "MyNetDnsRequest.h"
+#include "UDPSocket.h"
+#include <string>
+#include "dnsname.h"
+
+//#define DEBUG
+
+#ifdef DEBUG
+#include "Utils.h"
+#define PRINT_FUNC() printf("%p %d:%s\n", this,__LINE__,__PRETTY_FUNCTION__)
+#else //DEBUG
+#define PRINT_FUNC()
+#endif //DEBUG
+
+
+MyNetDnsRequest::MyNetDnsRequest(const char* hostname) : NetDnsRequest(hostname), 
+    m_state(MYNETDNS_START), m_cbFired(false), m_closing(false), m_udp(NULL) {
+    PRINT_FUNC();
+}
+
+MyNetDnsRequest::MyNetDnsRequest(Host* pHost) : NetDnsRequest(pHost), 
+    m_state(MYNETDNS_START), m_cbFired(false), m_closing(false), m_udp(NULL) {
+    PRINT_FUNC();
+}
+
+MyNetDnsRequest::~MyNetDnsRequest() {
+    PRINT_FUNC();
+    if (m_udp) {
+        delete m_udp;
+    }
+}
+
+void MyNetDnsRequest::callback(UDPSocketEvent e)
+{
+    PRINT_FUNC();
+    uint8_t buf[512];
+    Host host;
+    int len = m_udp->recvfrom((char*)buf, sizeof(buf), &host);
+    if (memcmp(buf, m_id, 2) != 0) { //verify
+        return;
+    }
+    int rcode = response(buf, len);
+    if (rcode == 0) {
+        m_state = MYNETDNS_OK;
+    } else {
+        m_state = MYNETDNS_NOTFOUND;
+    }
+}
+
+int MyNetDnsRequest::response(uint8_t buf[], int size) {
+    PRINT_FUNC();
+#ifdef DEBUG
+    printHex(buf, size);
+#endif //DEBUG
+    int rcode = buf[3] & 0x0f;
+    if (rcode != 0) {
+        return rcode;
+    }
+    int qdcount = buf[4]<<8|buf[5];
+    int ancount = buf[6]<<8|buf[7];
+    int pos = 12;
+    while(qdcount-- > 0) {
+        dnsname qname(buf);
+        pos = qname.decode(pos); // qname
+        pos += 4; // qtype qclass
+    }
+    while(ancount-- > 0) {
+        dnsname name(buf);
+        pos = name.decode(pos); // name
+        int type = buf[pos]<<8|buf[pos+1];
+        pos += 8; // type class TTL  
+        int rdlength = buf[pos]<<8|buf[pos+1]; pos += 2;
+        int rdata_pos = pos;
+        pos += rdlength;
+        if (type == 1) { // A record
+            m_ip = IpAddr(buf[rdata_pos],buf[rdata_pos+1],buf[rdata_pos+2],buf[rdata_pos+3]);
+        }
+#ifdef DEBUG
+        printf("%s", name.str.c_str());
+        if (type == 1) {
+            printf(" A %d.%d.%d.%d\n", 
+                buf[rdata_pos],buf[rdata_pos+1],buf[rdata_pos+2],buf[rdata_pos+3]);
+        } else if (type == 5) {
+            dnsname rdname(buf);
+            rdname.decode(rdata_pos);
+            printf(" CNAME %s\n", rdname.str.c_str());
+        } else {
+            printf(" TYPE:%d", type);
+            printfBytes(" RDATA:", &buf[rdata_pos], rdlength);
+        }
+#endif //DEBUG
+    }
+    return rcode;
+}
+
+int MyNetDnsRequest::query(uint8_t buf[], int size, const char* hostname) {
+    PRINT_FUNC();
+    const uint8_t header[] = {
+        0x00,0x00,0x01,0x00, // id=0x0000 QR=0 rd=1 opcode=0 rcode=0
+        0x00,0x01,0x00,0x00, // qdcount=1 ancount=0
+        0x00,0x00,0x00,0x00};// nscount=0 arcount=0 
+    const uint8_t tail[] = {0x00,0x01,0x00,0x01}; // qtype=A qclass=IN
+    memcpy(buf, header, sizeof(header));
+    int t = clock();
+    m_id[0] = t>>8;
+    m_id[1] = t;
+    memcpy(buf, m_id, 2); 
+    dnsname qname(buf);
+    int pos = qname.encode(sizeof(header), (char*)hostname);
+    memcpy(buf+pos, tail, sizeof(tail));
+    pos += sizeof(tail);
+    return pos;
+}
+
+void MyNetDnsRequest::resolve(const char* hostname) {
+    PRINT_FUNC();
+    if (m_udp == NULL) {
+        m_udp = new UDPSocket;
+    }
+    m_udp->setOnEvent(this, &MyNetDnsRequest::callback);
+    Host local(IpAddr(0,0,0,0), 1243);
+    Host server(IpAddr(8,8,8,8), 53); // DNS
+    m_udp->bind(local);
+    uint8_t buf[256];                
+    int size = query(buf, sizeof(buf), hostname);
+#ifdef DEBUG
+    printf("hostname:[%s]\n", hostname);
+    printHex(buf, size);
+#endif
+    m_udp->sendto((char*)buf, size, &server);
+    m_timer.reset();
+    m_timer.start();
+}
+
+void MyNetDnsRequest::poll() {
+    PRINT_FUNC();
+#ifdef DEBUG
+    printf("%p m_state: %d, m_udp: %p\n", this, m_state, m_udp);
+    wait_ms(400);
+#endif //DEBUG
+    switch(m_state) {
+        case MYNETDNS_START:
+            resolve(m_hostname);
+            m_state = MYNETDNS_PROCESSING;
+            break;
+        case MYNETDNS_PROCESSING: 
+            break;
+        case MYNETDNS_NOTFOUND: 
+            onReply(NETDNS_FOUND); 
+            break;
+        case MYNETDNS_ERROR: 
+            onReply(NETDNS_ERROR);
+            break;
+        case MYNETDNS_OK:
+            onReply(NETDNS_FOUND); 
+            break;
+    }
+    if (m_timer.read_ms() > 3000) {
+        m_timer.stop();
+        m_state = MYNETDNS_ERROR;
+    }
+    if(m_closing && (m_state!=MYNETDNS_PROCESSING)) {
+        NetDnsRequest::close();
+    }
+}
+
+void MyNetDnsRequest::close() {
+    PRINT_FUNC();
+    if(m_state != MYNETDNS_PROCESSING) {
+        NetDnsRequest::close();
+    } else {
+        m_closing = true;
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MyNetDnsRequest.h	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,35 @@
+// MyNetDnsRequest.h 2012/4/13
+#ifndef MYNETDNSREQUEST_H
+#define MYNETDNSREQUEST_H
+#include "if/net/netdnsrequest.h"
+#include "UDPSocket.h"
+ 
+class MyNetDnsRequest : public NetDnsRequest {
+public:
+    MyNetDnsRequest(const char* hostname);
+    MyNetDnsRequest(Host* pHost);
+    virtual ~MyNetDnsRequest();
+    virtual void poll();
+    virtual void close();
+protected:
+    void callback(UDPSocketEvent e);
+    int response(uint8_t buf[], int size);
+    int query(uint8_t buf[], int size, const char* hostname);
+    void resolve(const char* hostname);
+    uint8_t m_id[2];
+    Timer m_timer;
+private:
+    enum MyNetDnsState
+    {
+        MYNETDNS_START,
+        MYNETDNS_PROCESSING, //Req has not completed
+        MYNETDNS_NOTFOUND,
+        MYNETDNS_ERROR,
+        MYNETDNS_OK
+    };
+    MyNetDnsState m_state;
+    bool m_cbFired;
+    bool m_closing;
+    UDPSocket *m_udp;
+};
+#endif //MYNETDNSREQUEST_H

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MyNetIf.cpp	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,52 @@
+// MyNetIf.cpp 2012/4/13
+#include "mbed.h"
+#include "MyNetIf.h"
+#include "MyNetTcpSocket.h"
+#include "MyNetUdpSocket.h"
+#include "MyNetDnsRequest.h"
+
+//#define DEBUG
+
+#ifdef DEBUG
+#include "Utils.h"
+#define PRINT_FUNC() printf("%d:%s\n", __LINE__,__PRETTY_FUNCTION__)
+#else //DEBUG
+#define PRINT_FUNC()
+#endif //DEBUG
+
+MyNetIf::MyNetIf() : NetIf(), m_init(false)
+{
+    PRINT_FUNC();
+}
+
+MyNetIf::~MyNetIf() {
+    PRINT_FUNC();
+}
+
+void MyNetIf::init() {
+    PRINT_FUNC();
+}
+
+NetTcpSocket* MyNetIf::tcpSocket() {
+    PRINT_FUNC();
+    return new MyNetTcpSocket();
+}
+
+NetUdpSocket* MyNetIf::udpSocket() {
+    PRINT_FUNC();
+    return new MyNetUdpSocket();
+}
+
+NetDnsRequest* MyNetIf::dnsRequest(const char* hostname) {
+    PRINT_FUNC();
+    return new MyNetDnsRequest(hostname);
+}
+
+NetDnsRequest* MyNetIf::dnsRequest(Host* pHost) {
+    PRINT_FUNC();
+    return new MyNetDnsRequest(pHost);
+}
+
+void MyNetIf::poll() {
+    PRINT_FUNC();
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MyNetIf.h	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,23 @@
+#ifndef MYIPNETIF_H
+#define MYIPNETIF_H
+#include "mbed.h"
+#include "core/net.h"
+#include "if/net/netif.h"
+
+class MyNetIf : public NetIf {
+public:
+    MyNetIf();
+    
+    void init();
+
+    virtual ~MyNetIf();
+    virtual NetTcpSocket* tcpSocket();
+    virtual NetUdpSocket* udpSocket();
+    virtual NetDnsRequest* dnsRequest(const char* hostname);
+    virtual NetDnsRequest* dnsRequest(Host* pHost);
+    
+    virtual void poll();
+private:
+    bool m_init;
+};
+#endif //MYIPNETIF_H
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MyNetTcpSocket.cpp	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,166 @@
+// MyNetTcpSocket.cpp 2012/4/15
+#include "mbed.h"
+#include "w5100.h"
+#include "MyNetTcpSocket.h"
+
+#define DEBUG
+
+#ifdef DEBUG
+#include "Utils.h"
+#define PRINT_FUNC() printf("%p %d:%s\n", this,__LINE__,__PRETTY_FUNCTION__)
+#else //DEBUG
+#define PRINT_FUNC()
+#endif //DEBUG
+
+MyNetTcpSocket::MyNetTcpSocket() : NetTcpSocket()  {
+    PRINT_FUNC();
+    _socket = 1;
+    W5100.writeSnMR(_socket, SnMR:: TCP); // set TCP mode
+}
+
+MyNetTcpSocket::~MyNetTcpSocket() {
+    PRINT_FUNC();
+}
+
+NetTcpSocketErr MyNetTcpSocket::bind(const Host& me) {
+    PRINT_FUNC();
+    int port = me.getPort();
+    W5100.writeSnPORT(_socket, port);
+    return NETTCPSOCKET_OK;
+}
+
+NetTcpSocketErr MyNetTcpSocket::listen() {
+    PRINT_FUNC();
+    W5100.execCmdSn(_socket, Sock_OPEN); // set OPEN command
+    W5100.execCmdSn(_socket, Sock_LISTEN); // listen
+#ifdef DEBUG
+    uint8_t ip[4];
+    printf("socket:%d SnMR:%02x SnIR:%02x SnSR:%02x\n", _socket, 
+        W5100.readSnMR(_socket), W5100.readSnIR(_socket), W5100.readSnSR(_socket));
+    W5100.getIPAddress(ip);
+    printf("SIPR: %d.%d.%d.%d Sn_PORT:%d\n", ip[0], ip[1], ip[2], ip[3], W5100.readSnPORT(_socket));
+#endif //DEBUG
+    return NETTCPSOCKET_OK;
+}
+
+NetTcpSocketErr MyNetTcpSocket::connect(const Host& host) {
+    PRINT_FUNC();
+    uint8_t ip[4];
+    ip[0] = host.getIp()[0];
+    ip[1] = host.getIp()[1];
+    ip[2] = host.getIp()[2];
+    ip[3] = host.getIp()[3];
+    int port = host.getPort();
+    W5100.writeSnDIPR(_socket, ip);
+    W5100.writeSnDPORT(_socket, port);
+    if (W5100.readSnPORT(_socket) == 0) {
+        W5100.writeSnPORT(_socket, 1024 + _socket);
+    }
+    W5100.execCmdSn(_socket, Sock_OPEN); // set OPEN command
+    W5100.execCmdSn(_socket, Sock_CONNECT);
+#ifdef DEBUG
+    printf("socket:%d SnMR:%02x SnIR:%02x SnSR:%02x\n", _socket, 
+        W5100.readSnMR(_socket), W5100.readSnIR(_socket), W5100.readSnSR(_socket));
+    W5100.getIPAddress(ip);
+    printf("SIPR: %d.%d.%d.%d Sn_PORT:%d\n", ip[0], ip[1], ip[2], ip[3], W5100.readSnPORT(_socket));
+    W5100.readSnDIPR(_socket, ip);
+    printf("Sn_DIPR: %d.%d.%d.%d Sn_DPORT:%d\n", ip[0], ip[1], ip[2], ip[3], W5100.readSnDPORT(_socket));
+#endif //DEBUG
+    return NETTCPSOCKET_OK;
+}
+
+NetTcpSocketErr MyNetTcpSocket::accept(Host* pClient, NetTcpSocket** ppNewNetTcpSocket) {
+    PRINT_FUNC();
+    uint8_t ip[4];
+    W5100.readSnDIPR(_socket, ip);
+    pClient->setIp(IpAddr(ip[0],ip[1],ip[2],ip[3]));
+    int port = W5100.readSnDPORT(_socket);
+    pClient->setPort(port);
+    
+    return NETTCPSOCKET_OK;
+}
+
+int /*if < 0 : NetTcpSocketErr*/ MyNetTcpSocket::send(const char* buf, int len) {
+    PRINT_FUNC();
+#ifdef DEBUG
+    printf("buf:%p, len=%d\n", buf, len);
+    printHex((u8*)buf, len);
+#endif //DEBUG
+    if (len > 0) {
+        W5100.send_data_processing(_socket, (uint8_t*)buf, len);
+        W5100.execCmdSn(_socket, Sock_SEND);
+    }
+    return len;
+}
+
+int /*if < 0 : NetTcpSocketErr*/ MyNetTcpSocket::recv(char* buf, int len){
+    PRINT_FUNC();
+    int size = W5100.getRXReceivedSize(_socket);
+    if (size > len) {
+        size = len;
+    }
+    if (size > 0) {
+        W5100.recv_data_processing(_socket, (uint8_t*)buf, size);
+        W5100.execCmdSn(_socket, Sock_RECV);
+    }
+#ifdef DEBUG
+    printHex((uint8_t*)buf, size);
+#endif //DEBUG
+    return size;
+}
+
+NetTcpSocketErr MyNetTcpSocket::close() {
+    PRINT_FUNC();
+    if(m_closed) {
+        return NETTCPSOCKET_OK;
+    }
+    m_closed = true;
+    cleanUp();
+    W5100.execCmdSn(_socket, Sock_DISCON);
+    W5100.execCmdSn(_socket, Sock_CLOSE);
+    return NETTCPSOCKET_OK;
+}
+
+NetTcpSocketErr MyNetTcpSocket::poll(){
+    PRINT_FUNC();
+    NetTcpSocket::flushEvents();
+#ifdef DEBUG
+    printf("socket:%d SnMR:%02x SnIR:%02x SnSR:%02x\n", _socket, 
+        W5100.readSnMR(_socket), W5100.readSnIR(_socket), W5100.readSnSR(_socket));
+    uint8_t ip[4];
+    W5100.readSnDIPR(_socket, ip);
+    printf("Sn_DIPR: %d.%d.%d.%d Sn_DPORT: %d\n", ip[0], ip[1], ip[2], ip[3], W5100.readSnDPORT(_socket));
+    printf("Sn_RX_RSR:%d, Sn_RX_RD:%d, Sn_RX_WR:%d\n",
+                W5100.readSnRX_RSR(_socket), W5100.readSnRX_RD(_socket), W5100.readSnRX_WR(_socket));
+    printf("Sn_TX_FSR:%d, Sn_TX_RD:%d, Sn_TX_WR:%d\n",
+                W5100.readSnTX_FSR(_socket), W5100.readSnTX_RD(_socket), W5100.readSnTX_WR(_socket));
+    wait_ms(500);
+#endif //DEBUG
+    if (W5100.readSnSR(_socket) == 0x1c) {
+        queueEvent(NETTCPSOCKET_CONRST);
+    }
+    if (W5100.getRXReceivedSize(_socket) > 0) {
+        queueEvent(NETTCPSOCKET_READABLE);
+    }
+    if (W5100.readSnSR(_socket) == 0x17) {
+        queueEvent(NETTCPSOCKET_CONNECTED);
+        if (W5100.getTXFreeSize(_socket) > 0) {
+            queueEvent(NETTCPSOCKET_WRITEABLE);
+        }
+    }
+    return NETTCPSOCKET_OK;
+}
+
+void MyNetTcpSocket::cleanUp() //Flush input buffer
+{
+    PRINT_FUNC();
+    while(1) {
+        int len = W5100.getRXReceivedSize(_socket);
+        if (len <= 0) {
+            break;
+        }
+        uint8_t temp[8];
+        W5100.recv_data_processing(_socket, temp, sizeof(temp));
+        W5100.execCmdSn(_socket, Sock_RECV);
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MyNetTcpSocket.h	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,24 @@
+// MyNetTcpSocket.h 2012/4/14
+#ifndef MYNETTCPSOCKET_H
+#define MYNETTCPSOCKET_H
+#include "if/net/nettcpsocket.h"
+
+class MyNetTcpSocket : public NetTcpSocket {
+public:
+    MyNetTcpSocket();
+    virtual ~MyNetTcpSocket();
+    virtual NetTcpSocketErr bind(const Host& me);
+    virtual NetTcpSocketErr listen();
+    virtual NetTcpSocketErr connect(const Host& host);
+    virtual NetTcpSocketErr accept(Host* pClient, NetTcpSocket** ppNewNetTcpSocket);
+    virtual int /*if < 0 : NetTcpSocketErr*/ send(const char* buf, int len);
+    virtual int /*if < 0 : NetTcpSocketErr*/ recv(char* buf, int len);
+    virtual NetTcpSocketErr close();
+    virtual NetTcpSocketErr poll();
+protected:
+    int _socket;
+private:
+    void cleanUp(); //Flush input buffer
+    queue<MyNetTcpSocket*> m_lpInNetTcpSocket;
+};
+#endif //MYNETTCPSOCKET_H
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MyNetUdpSocket.cpp	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,126 @@
+// MyNetUdpSocket.cpp 2012/4/15
+#include "mbed.h"
+#include "MyNetUdpSocket.h"
+#include "w5100.h"
+
+#define DEBUG
+
+#ifdef DEBUG
+#include "Utils.h"
+#define PRINT_FUNC() printf("%p %d:%s\n", this,__LINE__,__PRETTY_FUNCTION__)
+#else //DEBUG
+#define PRINT_FUNC()
+#endif //DEBUG
+
+MyNetUdpSocket::MyNetUdpSocket() : NetUdpSocket()  {
+    PRINT_FUNC();
+    _socket = 0;
+    W5100.writeSnMR(_socket, SnMR::UDP); // set UDP mode
+}
+
+MyNetUdpSocket::~MyNetUdpSocket() {
+    PRINT_FUNC();
+    close();
+}
+
+NetUdpSocketErr MyNetUdpSocket::bind(const Host& me) {
+    PRINT_FUNC();
+    int port = me.getPort();
+    W5100.writeSnPORT(_socket, port);
+    W5100.execCmdSn( _socket, Sock_OPEN); // set OPEN command
+    return NETUDPSOCKET_OK;
+}
+
+int /*if < 0 : NetUdpSocketErr*/ MyNetUdpSocket::sendto(const char* buf, int len, Host* pHost) {
+    PRINT_FUNC();
+    uint8_t ip[4];
+    ip[0] = pHost->getIp()[0];
+    ip[1] = pHost->getIp()[1];
+    ip[2] = pHost->getIp()[2];
+    ip[3] = pHost->getIp()[3];
+    int port = pHost->getPort();
+    W5100.writeSnDIPR(_socket, ip);
+    W5100.writeSnDPORT(_socket, port);
+    W5100.send_data_processing(_socket, (uint8_t*)buf, len);
+    W5100.execCmdSn(_socket, Sock_SEND);
+#ifdef DEBUG
+    printHex((u8*)buf, len);
+    W5100.getIPAddress(ip);
+    printf("SIPR: %d.%d.%d.%d Sn_PORT:%d\n", ip[0], ip[1], ip[2], ip[3], W5100.readSnPORT(_socket));
+    W5100.readSnDIPR(_socket, ip);
+    printf("Sn_DIPR: %d.%d.%d.%d Sn_DPORT:%d\n", ip[0], ip[1], ip[2], ip[3], W5100.readSnDPORT(_socket));
+#endif //DEBUG
+    return len;
+}
+
+int /*if < 0 : NetUdpSocketErr*/ MyNetUdpSocket::recvfrom(char* buf, int len, Host* pHost) {
+    PRINT_FUNC();
+    int size = W5100.getRXReceivedSize(_socket);
+    if (size < 8) {
+        return -1;
+    }
+    uint8_t info[8];
+    W5100.recv_data_processing(_socket, info, 8);
+    W5100.execCmdSn(_socket, Sock_RECV);
+    pHost->setIp(IpAddr(info[0],info[1],info[2],info[3]));
+    pHost->setPort(info[4]<<8|info[5]);
+    size -= 8;
+    if (size > len) {
+        size = len;
+    }    
+    W5100.recv_data_processing(_socket, (uint8_t*)buf, size);
+    W5100.execCmdSn(_socket, Sock_RECV);
+#ifdef DEBUG
+    printfBytes("UDP PACKET-INFO", (u8*)info, 8);
+    printHex((u8*)buf, size);
+#endif //DEBUG
+    return size;
+}
+
+NetUdpSocketErr MyNetUdpSocket::close() {
+    PRINT_FUNC();
+    if(m_closed) {
+        return NETUDPSOCKET_OK;
+    }
+    m_closed = true;
+    cleanUp();
+    return NETUDPSOCKET_OK;
+}
+
+NetUdpSocketErr MyNetUdpSocket::poll() {
+    PRINT_FUNC();
+    NetUdpSocket::flushEvents();
+#ifdef DEBUG
+    printf("socket:%d SnMR:%02x SnIR:%02x SnSR:%02x\n", _socket, 
+        W5100.readSnMR(_socket), W5100.readSnIR(_socket), W5100.readSnSR(_socket));
+    uint8_t ip[4];
+    W5100.readSnDIPR(_socket, ip);
+    printf("Sn_DIPR: %d.%d.%d.%d Sn_DPORT: %d\n", ip[0], ip[1], ip[2], ip[3], W5100.readSnDPORT(_socket));
+    uint8_t mac[6];
+    W5100.readSnDHAR(_socket, mac);
+    printf("Sn_DHAR: %02x:%02x:%02x:%02x:%02x:%02x\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+    printf("Sn_RX_RSR:%d, Sn_RX_RD:%d, Sn_RX_WR:%d\n",
+                W5100.readSnRX_RSR(_socket), W5100.readSnRX_RD(_socket), W5100.readSnRX_WR(_socket));
+    printf("Sn_TX_FSR:%d, Sn_TX_RD:%d, Sn_TX_WR:%d\n",
+                W5100.readSnTX_FSR(_socket), W5100.readSnTX_RD(_socket), W5100.readSnTX_WR(_socket));
+    wait_ms(500);    
+#endif //DEBUG
+    if (W5100.getRXReceivedSize(_socket) > 0) {
+        queueEvent(NETUDPSOCKET_READABLE);
+    }
+    return NETUDPSOCKET_OK;
+}
+
+void MyNetUdpSocket::cleanUp() //Flush input buffer
+{
+    PRINT_FUNC();
+    while(1) {
+        int len = W5100.getRXReceivedSize(_socket);
+        if (len <= 0) {
+            break;
+        }
+        uint8_t temp[8];
+        W5100.recv_data_processing(_socket, temp, sizeof(temp));
+        W5100.execCmdSn(_socket, Sock_RECV);
+    }    
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MyNetUdpSocket.h	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,20 @@
+// MyNetUdpSocket.h 2012/4/14
+#ifndef MYNETUDPSOCKET_H
+#define MYNETUDPSOCKET_H
+#include "if/net/netudpsocket.h"
+
+class MyNetUdpSocket: public NetUdpSocket {
+public:
+    MyNetUdpSocket();
+    virtual ~MyNetUdpSocket();
+    virtual NetUdpSocketErr bind(const Host& me);
+    virtual int /*if < 0 : NetUdpSocketErr*/ sendto(const char* buf, int len, Host* pHost);
+    virtual int /*if < 0 : NetUdpSocketErr*/ recvfrom(char* buf, int len, Host* pHost);
+    virtual NetUdpSocketErr close();
+    virtual NetUdpSocketErr poll();
+protected:
+    int _socket;
+private:
+    void cleanUp(); //Flush input buffer
+};
+#endif //MYNETUDPSOCKET_H

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TinyHTTP.cpp	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,240 @@
+/*
+ * mbed Tiny HTTP Client
+ * Copyright (c) 2011 Hiroshi Suga
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+
+/** @file
+ * @brief Tiny HTTP Client
+ */
+
+#include "mbed.h"
+#include "EthernetNetIf.h"
+#include "TCPSocket.h"
+#include "DNSRequest.h"
+#include "TinyHTTP.h"
+#include <ctype.h>
+
+
+TCPSocket *http;
+volatile int tcp_ready, tcp_readable, tcp_writable;
+volatile int dns_status;
+
+// Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+int base64enc(const char *input, unsigned int length, char *output, int len) {
+  static const char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+  unsigned int c, c1, c2, c3;
+
+  if (len < ((((length-1)/3)+1)<<2)) return -1;
+  for(unsigned int i = 0, j = 0; i<length; i+=3,j+=4) {
+    c1 = ((((unsigned char)*((unsigned char *)&input[i]))));
+    c2 = (length>i+1)?((((unsigned char)*((unsigned char *)&input[i+1])))):0;
+    c3 = (length>i+2)?((((unsigned char)*((unsigned char *)&input[i+2])))):0;
+
+    c = ((c1 & 0xFC) >> 2);
+    output[j+0] = base64[c];
+    c = ((c1 & 0x03) << 4) | ((c2 & 0xF0) >> 4);
+    output[j+1] = base64[c];
+    c = ((c2 & 0x0F) << 2) | ((c3 & 0xC0) >> 6);
+    output[j+2] = (length>i+1)?base64[c]:'=';
+    c = (c3 & 0x3F);
+    output[j+3] = (length>i+2)?base64[c]:'=';
+  }
+  output[(((length-1)/3)+1)<<2] = '\0';
+  return 0;
+}
+
+// Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+int urlencode(char *str, char *buf, int len) {
+  static const char to_hex[] = "0123456789ABCDEF";
+//  char *pstr = str, *buf = (char*)malloc(strlen(str) * 3 + 1), *pbuf = buf;
+  char *pstr = str, *pbuf = buf;
+
+  if (len < (strlen(str) * 3 + 1)) return -1;
+  while (*pstr) {
+    if (isalnum(*pstr) || *pstr == '-' || *pstr == '_' || *pstr == '.' || *pstr == '~') {
+      *pbuf++ = *pstr;
+    } else if (*pstr == ' ') {
+      *pbuf++ = '+';
+    } else { 
+      *pbuf++ = '%';
+      *pbuf++ = to_hex[(*pstr >> 4) & 0x0f];
+      *pbuf++ = to_hex[*pstr & 0x0f];
+    }
+    pstr++;
+  }
+  *pbuf = '\0';
+  return 0;
+}
+
+
+void isr_http (TCPSocketEvent e) {
+
+#ifdef DEBUG
+    printf("tcp(%d)\r\n", e);
+#endif
+    switch(e) {
+    case TCPSOCKET_CONNECTED:
+        tcp_ready = 1;
+        break;
+
+    case TCPSOCKET_READABLE: //Incoming data
+        tcp_readable = 1;
+        break;
+
+    case TCPSOCKET_WRITEABLE: //We can send data
+        tcp_writable = 1;
+        break;
+
+    case TCPSOCKET_CONTIMEOUT:
+    case TCPSOCKET_CONRST:
+    case TCPSOCKET_CONABRT:
+    case TCPSOCKET_ERROR:
+    case TCPSOCKET_DISCONNECTED:
+        tcp_ready = 0;
+        break;
+    }
+}
+
+void createauth (char *user, char *pwd, char *buf, int len) {
+    char tmp[80];
+
+    strncpy(buf, "Authorization: Basic ", len);
+    snprintf(tmp, sizeof(tmp), "%s:%s", user, pwd);
+    base64enc(tmp, strlen(tmp), &buf[strlen(buf)], len - strlen(buf));
+    strncat(buf, "\r\n", len - strlen(buf));
+}
+
+void isr_dns (DNSReply r) {
+
+#ifdef DEBUG
+    printf("dns(%d)\r\n", r);
+#endif
+    if (r == DNS_FOUND) {
+        dns_status = 1;
+    } else {
+        dns_status = -1;
+    }
+}
+
+int httpRequest (int method, Host *host, char *uri, char *head, char *body) {
+    TCPSocketErr err;
+    Timer timeout;
+    char buf[1500];
+    int i, ret = -1;
+
+    http = new TCPSocket;
+    tcp_ready = 0;
+    tcp_readable = 0;
+    tcp_writable = 0;
+
+    http->setOnEvent(isr_http);
+
+    // connect
+    if (host->getIp().isNull()) {
+        // resolv
+        DNSRequest dns;
+        dns_status = 0;
+        dns.setOnReply(isr_dns);
+        if (dns.resolve(host) != DNS_OK) goto exit;
+        timeout.reset();
+        timeout.start();
+        while (timeout.read_ms() < HTTP_TIMEOUT) {
+            if (dns_status) break;
+            Net::poll();
+        }
+        timeout.stop();
+        if (dns_status <= 0) goto exit;
+#ifdef DEBUG
+        printf("%s [%d.%d.%d.%d]\r\n", host->getName(), (unsigned char)host->getIp()[0], (unsigned char)host->getIp()[1], (unsigned char)host->getIp()[2], (unsigned char)host->getIp()[3]);
+#endif
+    }
+    if (! host->getPort()) {
+        host->setPort(HTTP_PORT);
+    }
+    err = http->connect(*host);
+    if (err != TCPSOCKET_OK) goto exit;
+
+    // wait connect
+    timeout.reset();
+    timeout.start();
+    while (timeout.read_ms() < HTTP_TIMEOUT) {
+        if (tcp_ready) break;
+        Net::poll();
+    }
+    timeout.stop();
+    if (! tcp_ready) goto exit;
+
+    // send request
+    if (method == METHOD_POST) {
+        http->send("POST ", 5);
+    } else {
+        http->send("GET ", 4);
+    }
+    http->send(uri, strlen(uri));
+    http->send(" HTTP/1.1\r\nHost: ", 17);
+    http->send(host->getName(), strlen(host->getName()));
+    http->send("\r\n", 2);
+    http->send("Connection: close\r\n", 19);
+    if (head) {
+        http->send(head, strlen(head));
+    }
+    if (method == METHOD_POST) {
+        sprintf(buf, "Content-Length: %d\r\n", strlen(body));
+        http->send(buf, strlen(buf));
+    }
+    http->send("\r\n", 2);
+
+    // post method
+    if (method == METHOD_POST && body) {
+        http->send(body, strlen(body));
+    }
+
+    // wait responce
+    timeout.reset();
+    timeout.start();
+    while (timeout.read_ms() < HTTP_TIMEOUT) {
+        if (tcp_readable) break;
+        Net::poll();
+    }
+    timeout.stop();
+    if (! tcp_readable) goto exit;
+
+    // recv responce
+    i = http->recv(buf, sizeof(buf) - 1);
+    buf[i] = 0;
+    if (i < sizeof(buf) - 1) tcp_readable = 0;
+    if (strncmp(buf, "HTTP/", 5) == 0) {
+        ret = atoi(&buf[9]);
+    }
+#ifdef DEBUG
+    printf(buf);
+#endif
+
+    // recv dummy
+    timeout.reset();
+    timeout.start();
+    while (timeout.read_ms() < HTTP_TIMEOUT) {
+        if (tcp_readable) {
+            i = http->recv(buf, sizeof(buf) - 1);
+            buf[i] = 0;
+            if (i < sizeof(buf) - 1) tcp_readable = 0;
+#ifdef DEBUG
+            printf(buf);
+#endif
+            timeout.reset();
+        } else
+        if (! tcp_ready) {
+            break;
+        }
+        Net::poll();
+    }
+    timeout.stop();
+
+exit:
+    http->resetOnEvent();
+    http->close();
+    delete http;
+
+    return ret;
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TinyHTTP.h	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,38 @@
+/*
+ * mbed Tiny HTTP Client
+ * Copyright (c) 2011 Hiroshi Suga
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+
+/** @file
+ * @brief Tiny HTTP Client
+ */
+
+#ifndef TinyHTTP_h
+#define TinyHTTP_h
+
+#define DEBUG
+
+#define HTTP_PORT 80
+#define HTTP_TIMEOUT 15000 // ms
+
+#define METHOD_GET 0
+#define METHOD_POST 1
+
+/** send http request
+ * @param method METHOD_GET or METHOD_POST
+ * @param host http server
+ * @param uri URI
+ * @param head http header (CR+LF) (or NULL)
+ * @param body POST body (or NULL)
+ * @return http code, -1:failue
+ */
+int httpRequest (int method, Host *host, char *uri, char *head, char *body);
+
+void createauth (char *user, char *pwd, char *buf, int len);
+
+int base64enc(const char *input, unsigned int length, char *output, int len);
+
+int urlencode(char *str, char *buf, int len);
+
+#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Utils.cpp	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,48 @@
+
+
+#include "mbed.h"
+#include "Utils.h"
+
+void printfBytes(const char* s, const u8* data, int len)
+{
+    printf("%s %d:",s,len);
+    if (len > 256)
+        len = 256;
+    while (len-- > 0)
+        printf(" %02X",*data++);
+    printf("\n");
+}
+
+void printHexLine(const u8* d, int addr, int len)
+{
+    printf("%04X ",addr);
+    int i;
+    for (i = 0; i < len; i++)
+        printf("%02X ",d[i]);
+    for (;i < 16; i++)
+        printf("   ");
+    char s[16+1];
+    memset(s,0,sizeof(s));
+    for (i = 0; i < len; i++)
+    {
+        int c = d[i];
+        if (c < 0x20 || c > 0x7E)
+            c = '.';
+        s[i] = c;
+    }
+    printf("%s\n",s);
+}
+
+void printHex(const u8* d, int len)
+{
+    int addr = 0;
+    while (len)
+    {
+        int count = len;
+        if (count > 16)
+            count = 16;
+        printHexLine(d+addr,addr,count);
+        addr += 16;
+        len -= count;
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Utils.h	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,37 @@
+
+typedef unsigned char u8;
+typedef unsigned short u16;
+typedef unsigned long u32;
+
+void DelayMS(int ms);
+
+void printfBytes(const char* label,const u8* data, int len);
+void printHex(const u8* d, int len);
+
+#ifndef min
+#define min(_a,_b) ((_a) < (_b) ? (_a) : (_b))
+#endif
+
+inline int LE16(const u8* d)
+{
+    return d[0] | (d[1] << 8);
+}
+
+inline u32 BE32(const u8* d)
+{
+    return (d[0] << 24) | (d[1] << 16) | (d[2] << 8) | d[3];
+}
+
+inline void BE32(u32 n, u8* d)
+{
+    d[0] = (u8)(n >> 24);
+    d[1] = (u8)(n >> 16);
+    d[2] = (u8)(n >> 8);
+    d[3] = (u8)n;
+}
+
+inline void BE16(u32 n, u8* d)
+{
+    d[0] = (u8)(n >> 8);
+    d[1] = (u8)n;
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WIZ820ioNetIf.cpp	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,22 @@
+// WIZ820ioNetIf.cpp 2012/4/13
+#include "WIZ820ioNetIf.h"
+#include "w5100.h"
+
+bool wait_linkup(int timeout = 5000) {
+    Timer link_t;
+    link_t.start();
+    while(link_t.read_ms() < timeout) {
+        if (0x20 & W5100.readPHYSTATUS()) {
+            return true;
+        }
+         wait_ms(50);
+    }  
+    return false;
+}
+
+int WIZ820ioNetIf::setup(int timeout_ms) {
+    W5100.hardware_reset();
+    W5100.init();
+    wait_linkup();
+    return w5200NetIf::setup(timeout_ms);
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WIZ820ioNetIf.h	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,9 @@
+// WIZ820ioNetIf.h 2012/4/13
+#ifndef WIZ820IO_NETIF_H
+#define WIZ820IO_NETIF_H
+#include "w5200NetIf.h"
+class WIZ820ioNetIf : public w5200NetIf {
+public:
+    int setup(int timeout_ms = 15000);
+};
+#endif //WIZ820IO_NETIF_H

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dnsname.h	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,51 @@
+// dnsname.h 2012/4/13
+#ifndef DNSNAME_H
+#define DNSNAME_H
+class dnsname {
+public:
+    uint8_t *buf;
+    string str;
+    dnsname(uint8_t *s) {
+        buf = s;
+    }
+    int decode(int pos) {
+        while(1) {
+            int len = buf[pos++];
+            if (len == 0x00) {
+                break;
+            }
+            if ((len&0xc0) == 0xc0) { //compress
+                int offset = (len&0x3f)<<8|buf[pos];
+                decode(offset);
+                return pos+1;
+            }
+            if (!str.empty()) {
+                str.append(".");
+            }
+            str.append((const char*)(buf+pos), len);
+            pos += len;
+        }
+        return pos;
+    }
+
+    int encode(int pos, char* s) {
+        while(*s) {  
+            char *f = strchr(s, '.');
+            if (f == NULL) {
+                int len = strlen(s);
+                buf[pos++] = len;
+                memcpy(buf+pos, s, len);
+                pos += len;
+                break;
+            }
+            int len = f - s;
+            buf[pos++] = len;
+            memcpy(buf+pos, s, len);
+            s = f+1;
+            pos += len;
+        }
+        buf[pos++] = 0x00;
+        return pos;
+    }
+};
+#endif //DNSNAME_H

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/737756e0b479

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mymain.cpp	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,13 @@
+#include "mbed.h"
+#include "WIZ820ioNetIf.h"
+#include "TinyHTTP.h"
+#include <host.h>
+
+int main() {
+    WIZ820ioNetIf eth;
+    eth.setup();
+    Host host;
+    host.setName("www.wiznet.co.kr");
+    int status = httpRequest(METHOD_GET, &host, "/", NULL, NULL);
+    printf("status: %d\n", status);
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/w5100.cpp	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,271 @@
+/*
+ * Copyright (c) 2010 by Cristian Maglie <c.maglie@bug.st>
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of either the GNU General Public License version 2
+ * or the GNU Lesser General Public License version 2.1, both as
+ * published by the Free Software Foundation.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include "w5100.h"
+#ifndef MBED
+#include <avr/interrupt.h>
+#endif //MBED
+
+// W5100 controller instance
+W5100Class W5100;
+
+#define TX_RX_MAX_BUF_SIZE 2048
+#define TX_BUF 0x1100
+#define RX_BUF (TX_BUF + TX_RX_MAX_BUF_SIZE)
+
+#ifdef W5200
+#define TXBUF_BASE 0x8000
+#define RXBUF_BASE 0xC000
+#else
+#define TXBUF_BASE 0x4000
+#define RXBUF_BASE 0x6000
+#endif
+
+#ifdef MBED
+SPI spi(p11, p12, p13); // mosi, miso, sclk
+DigitalOut _cs(p14);
+DigitalOut _reset(p15);
+inline void delay(int n) { wait_ms(n); }
+inline static void initSS(){ _cs = 1; }
+inline static void setSS() { _cs = 0; }
+inline static void resetSS() { _cs = 1; }
+
+void W5100Class::hardware_reset() {
+  _reset = 1;
+  _reset = 0;
+  wait_us(2);
+  _reset = 1;
+  wait_ms(150);
+}
+#endif //MBED
+
+void W5100Class::init(void)
+{
+  initSS();
+  writeMR(1<<RST);
+  
+#ifdef W5200
+  for (int i=0; i<MAX_SOCK_NUM; i++) {
+    write((0x4000 + i * 0x100 + 0x001F), 2);
+    write((0x4000 + i * 0x100 + 0x001E), 2);
+  }
+#else  
+  writeTMSR(0x55);
+  writeRMSR(0x55);
+#endif
+
+  for (int i=0; i<MAX_SOCK_NUM; i++) {
+    SBASE[i] = TXBUF_BASE + SSIZE * i;
+    RBASE[i] = RXBUF_BASE + RSIZE * i;
+  }
+}
+
+uint16_t W5100Class::getTXFreeSize(SOCKET s)
+{
+  uint16_t val=0, val1=0;
+  do {
+    val1 = readSnTX_FSR(s);
+    if (val1 != 0)
+      val = readSnTX_FSR(s);
+  } 
+  while (val != val1);
+  return val;
+}
+
+uint16_t W5100Class::getRXReceivedSize(SOCKET s)
+{
+  uint16_t val=0,val1=0;
+  do {
+    val1 = readSnRX_RSR(s);
+    if (val1 != 0)
+      val = readSnRX_RSR(s);
+  } 
+  while (val != val1);
+  return val;
+}
+
+
+void W5100Class::send_data_processing(SOCKET s, const uint8_t *data, uint16_t len)
+{
+  // This is same as having no offset in a call to send_data_processing_offset
+  send_data_processing_offset(s, 0, data, len);
+}
+
+void W5100Class::send_data_processing_offset(SOCKET s, uint16_t data_offset, const uint8_t *data, uint16_t len)
+{
+  uint16_t ptr = readSnTX_WR(s);
+  ptr += data_offset;
+  uint16_t offset = ptr & SMASK;
+  uint16_t dstAddr = offset + SBASE[s];
+
+  if (offset + len > SSIZE) 
+  {
+    // Wrap around circular buffer
+    uint16_t size = SSIZE - offset;
+    write(dstAddr, data, size);
+    write(SBASE[s], data + size, len - size);
+  } 
+  else {
+    write(dstAddr, data, len);
+  }
+
+  ptr += len;
+  writeSnTX_WR(s, ptr);
+}
+
+
+void W5100Class::recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uint8_t peek)
+{
+  uint16_t ptr;
+  ptr = readSnRX_RD(s);
+  read_data(s, (uint8_t *)ptr, data, len);
+  if (!peek)
+  {
+    ptr += len;
+    writeSnRX_RD(s, ptr);
+  }
+}
+
+void W5100Class::read_data(SOCKET s, volatile uint8_t *src, volatile uint8_t *dst, uint16_t len)
+{
+  uint16_t size;
+  uint16_t src_mask;
+  uint16_t src_ptr;
+
+#ifdef MBED
+  src_mask = (int)src & RMASK;
+#else 
+  src_mask = (uint16_t)src & RMASK;
+#endif //MBED
+  src_ptr = RBASE[s] + src_mask;
+
+  if( (src_mask + len) > RSIZE ) 
+  {
+    size = RSIZE - src_mask;
+    read(src_ptr, (uint8_t *)dst, size);
+    dst += size;
+    read(RBASE[s], (uint8_t *) dst, len - size);
+  } 
+  else
+    read(src_ptr, (uint8_t *) dst, len);
+}
+
+
+uint8_t W5100Class::write(uint16_t _addr, uint8_t _data)
+{
+  setSS();  
+  
+#ifdef W5200
+  spi.write(_addr >> 8);
+  spi.write(_addr & 0xFF);
+  spi.write(0x80);
+  spi.write(0x01);
+#else    
+  spi.write(0xF0);
+  spi.write(_addr >> 8);
+  spi.write(_addr & 0xFF);
+#endif  
+  spi.write(_data);
+  resetSS();
+  return 1;
+}
+
+uint16_t W5100Class::write(uint16_t _addr, const uint8_t *_buf, uint16_t _len)
+{
+    
+#ifdef W5200
+    setSS();
+    spi.write(_addr >> 8);
+    spi.write(_addr & 0xFF);
+    spi.write((0x80 | ((_len & 0x7F00) >> 8)));
+    spi.write(_len & 0x00FF);
+
+  for (uint16_t i=0; i<_len; i++)
+  {
+    spi.write(_buf[i]);
+
+  }
+    resetSS();
+#else    
+    
+  for (uint16_t i=0; i<_len; i++)
+  {
+    setSS();    
+    spi.write(0xF0);
+    spi.write(_addr >> 8);
+    spi.write(_addr & 0xFF);
+    _addr++;
+    spi.write(_buf[i]);
+    resetSS();
+  }
+#endif
+  
+  return _len;
+}
+
+uint8_t W5100Class::read(uint16_t _addr)
+{
+  setSS();  
+#ifdef W5200
+  spi.write(_addr >> 8);
+  spi.write(_addr & 0xFF);
+  spi.write(0x00);
+  spi.write(0x01);
+#else
+  spi.write(0x0F);
+  spi.write(_addr >> 8);
+  spi.write(_addr & 0xFF);
+#endif
+  
+  uint8_t _data = spi.write(0);
+  resetSS();
+  return _data;
+}
+
+uint16_t W5100Class::read(uint16_t _addr, uint8_t *_buf, uint16_t _len)
+{
+#ifdef W5200
+    setSS();
+    spi.write(_addr >> 8);
+    spi.write(_addr & 0xFF);
+    spi.write((0x00 | ((_len & 0x7F00) >> 8)));
+    spi.write(_len & 0x00FF);
+
+  for (uint16_t i=0; i<_len; i++)
+  {
+    _buf[i] = spi.write(0);
+
+  }
+    resetSS();
+
+#else    
+    
+  for (uint16_t i=0; i<_len; i++)
+  {
+    setSS();
+    spi.write(0x0F);
+    spi.write(_addr >> 8);
+    spi.write(_addr & 0xFF);
+    _addr++;
+    _buf[i] = spi.write(0);
+    resetSS();
+  }
+#endif  
+  return _len;
+}
+
+void W5100Class::execCmdSn(SOCKET s, SockCMD _cmd) {
+  // Send command to socket
+  writeSnCR(s, _cmd);
+  // Wait for command to complete
+  while (readSnCR(s))
+    ;
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/w5100.h	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,435 @@
+/*
+ * Copyright (c) 2010 by Cristian Maglie <c.maglie@bug.st>
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of either the GNU General Public License version 2
+ * or the GNU Lesser General Public License version 2.1, both as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef    W5100_H_INCLUDED
+#define    W5100_H_INCLUDED
+#define MBED
+#ifdef MBED
+#include "mbed.h"
+typedef unsigned char uint8_t;
+typedef unsigned short uint16_t;
+#else //MBED
+#include <avr/pgmspace.h>
+#include <SPI.h>
+#endif //MBED
+#define W5200
+
+#ifdef W5200
+#define MAX_SOCK_NUM 8
+#else
+#define MAX_SOCK_NUM 4
+#endif
+
+
+typedef uint8_t SOCKET;
+
+#ifndef W5200
+#define IDM_OR  0x8000
+#define IDM_AR0 0x8001
+#define IDM_AR1 0x8002
+#define IDM_DR  0x8003
+#endif
+
+/*
+class MR {
+public:
+  static const uint8_t RST   = 0x80;
+  static const uint8_t PB    = 0x10;
+  static const uint8_t PPPOE = 0x08;
+  static const uint8_t LB    = 0x04;
+  static const uint8_t AI    = 0x02;
+  static const uint8_t IND   = 0x01;
+};
+*/
+/*
+class IR {
+public:
+  static const uint8_t CONFLICT = 0x80;
+  static const uint8_t UNREACH  = 0x40;
+  static const uint8_t PPPoE    = 0x20;
+  static const uint8_t SOCK0    = 0x01;
+  static const uint8_t SOCK1    = 0x02;
+  static const uint8_t SOCK2    = 0x04;
+  static const uint8_t SOCK3    = 0x08;
+  static inline uint8_t SOCK(SOCKET ch) { return (0x01 << ch); };
+};
+*/
+
+class SnMR {
+public:
+  static const uint8_t CLOSE  = 0x00;
+  static const uint8_t TCP    = 0x01;
+  static const uint8_t UDP    = 0x02;
+  static const uint8_t IPRAW  = 0x03;
+  static const uint8_t MACRAW = 0x04;
+  static const uint8_t PPPOE  = 0x05;
+  static const uint8_t ND     = 0x20;
+  static const uint8_t MULTI  = 0x80;
+};
+
+enum SockCMD {
+  Sock_OPEN      = 0x01,
+  Sock_LISTEN    = 0x02,
+  Sock_CONNECT   = 0x04,
+  Sock_DISCON    = 0x08,
+  Sock_CLOSE     = 0x10,
+  Sock_SEND      = 0x20,
+  Sock_SEND_MAC  = 0x21,
+  Sock_SEND_KEEP = 0x22,
+  Sock_RECV      = 0x40
+};
+
+/*class SnCmd {
+public:
+  static const uint8_t OPEN      = 0x01;
+  static const uint8_t LISTEN    = 0x02;
+  static const uint8_t CONNECT   = 0x04;
+  static const uint8_t DISCON    = 0x08;
+  static const uint8_t CLOSE     = 0x10;
+  static const uint8_t SEND      = 0x20;
+  static const uint8_t SEND_MAC  = 0x21;
+  static const uint8_t SEND_KEEP = 0x22;
+  static const uint8_t RECV      = 0x40;
+};
+*/
+
+class SnIR {
+public:
+  static const uint8_t SEND_OK = 0x10;
+  static const uint8_t TIMEOUT = 0x08;
+  static const uint8_t RECV    = 0x04;
+  static const uint8_t DISCON  = 0x02;
+  static const uint8_t CON     = 0x01;
+};
+
+class SnSR {
+public:
+  static const uint8_t CLOSED      = 0x00;
+  static const uint8_t INIT        = 0x13;
+  static const uint8_t LISTEN      = 0x14;
+  static const uint8_t SYNSENT     = 0x15;
+  static const uint8_t SYNRECV     = 0x16;
+  static const uint8_t ESTABLISHED = 0x17;
+  static const uint8_t FIN_WAIT    = 0x18;
+  static const uint8_t CLOSING     = 0x1A;
+  static const uint8_t TIME_WAIT   = 0x1B;
+  static const uint8_t CLOSE_WAIT  = 0x1C;
+  static const uint8_t LAST_ACK    = 0x1D;
+  static const uint8_t UDP         = 0x22;
+  static const uint8_t IPRAW       = 0x32;
+  static const uint8_t MACRAW      = 0x42;
+  static const uint8_t PPPOE       = 0x5F;
+};
+
+class IPPROTO {
+public:
+  static const uint8_t IP   = 0;
+  static const uint8_t ICMP = 1;
+  static const uint8_t IGMP = 2;
+  static const uint8_t GGP  = 3;
+  static const uint8_t TCP  = 6;
+  static const uint8_t PUP  = 12;
+  static const uint8_t UDP  = 17;
+  static const uint8_t IDP  = 22;
+  static const uint8_t ND   = 77;
+  static const uint8_t RAW  = 255;
+};
+
+class W5100Class {
+public:
+#ifdef MBED
+  void hardware_reset();
+#endif //MBED
+  void init();
+
+  /**
+   * @brief    This function is being used for copy the data form Receive buffer of the chip to application buffer.
+   * 
+   * It calculate the actual physical address where one has to read
+   * the data from Receive buffer. Here also take care of the condition while it exceed
+   * the Rx memory uper-bound of socket.
+   */
+  void read_data(SOCKET s, volatile uint8_t * src, volatile uint8_t * dst, uint16_t len);
+  
+  /**
+   * @brief     This function is being called by send() and sendto() function also. 
+   * 
+   * This function read the Tx write pointer register and after copy the data in buffer update the Tx write pointer
+   * register. User should read upper byte first and lower byte later to get proper value.
+   */
+  void send_data_processing(SOCKET s, const uint8_t *data, uint16_t len);
+  /**
+   * @brief A copy of send_data_processing that uses the provided ptr for the
+   *        write offset.  Only needed for the "streaming" UDP API, where
+   *        a single UDP packet is built up over a number of calls to
+   *        send_data_processing_ptr, because TX_WR doesn't seem to get updated
+   *        correctly in those scenarios
+   * @param ptr value to use in place of TX_WR.  If 0, then the value is read
+   *        in from TX_WR
+   * @return New value for ptr, to be used in the next call
+   */
+// FIXME Update documentation
+  void send_data_processing_offset(SOCKET s, uint16_t data_offset, const uint8_t *data, uint16_t len);
+
+  /**
+   * @brief    This function is being called by recv() also.
+   * 
+   * This function read the Rx read pointer register
+   * and after copy the data from receive buffer update the Rx write pointer register.
+   * User should read upper byte first and lower byte later to get proper value.
+   */
+  void recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uint8_t peek = 0);
+
+  inline void setGatewayIp(uint8_t *_addr);
+  inline void getGatewayIp(uint8_t *_addr);
+
+  inline void setSubnetMask(uint8_t *_addr);
+  inline void getSubnetMask(uint8_t *_addr);
+
+  inline void setMACAddress(uint8_t * addr);
+  inline void getMACAddress(uint8_t * addr);
+
+  inline void setIPAddress(uint8_t * addr);
+  inline void getIPAddress(uint8_t * addr);
+
+  inline void setRetransmissionTime(uint16_t timeout);
+  inline void setRetransmissionCount(uint8_t _retry);
+
+  void execCmdSn(SOCKET s, SockCMD _cmd);
+  
+  uint16_t getTXFreeSize(SOCKET s);
+  uint16_t getRXReceivedSize(SOCKET s);
+  
+
+  // W5100 Registers
+  // ---------------
+private:
+  static uint8_t write(uint16_t _addr, uint8_t _data);
+  static uint16_t write(uint16_t addr, const uint8_t *buf, uint16_t len);
+  static uint8_t read(uint16_t addr);
+  static uint16_t read(uint16_t addr, uint8_t *buf, uint16_t len);
+  
+#define __GP_REGISTER8(name, address)             \
+  static inline void write##name(uint8_t _data) { \
+    write(address, _data);                        \
+  }                                               \
+  static inline uint8_t read##name() {            \
+    return read(address);                         \
+  }
+#define __GP_REGISTER16(name, address)            \
+  static void write##name(uint16_t _data) {       \
+    write(address,   _data >> 8);                 \
+    write(address+1, _data & 0xFF);               \
+  }                                               \
+  static uint16_t read##name() {                  \
+    uint16_t res = read(address);                 \
+    res = (res << 8) + read(address + 1);         \
+    return res;                                   \
+  }
+#define __GP_REGISTER_N(name, address, size)      \
+  static uint16_t write##name(uint8_t *_buff) {   \
+    return write(address, _buff, size);           \
+  }                                               \
+  static uint16_t read##name(uint8_t *_buff) {    \
+    return read(address, _buff, size);            \
+  }
+
+public:
+  __GP_REGISTER8 (MR,     0x0000);    // Mode
+  __GP_REGISTER_N(GAR,    0x0001, 4); // Gateway IP address
+  __GP_REGISTER_N(SUBR,   0x0005, 4); // Subnet mask address
+  __GP_REGISTER_N(SHAR,   0x0009, 6); // Source MAC address
+  __GP_REGISTER_N(SIPR,   0x000F, 4); // Source IP address
+  __GP_REGISTER8 (IR,     0x0015);    // Interrupt
+  __GP_REGISTER8 (IMR,    0x0016);    // Interrupt Mask
+  __GP_REGISTER16(RTR,    0x0017);    // Timeout address
+  __GP_REGISTER8 (RCR,    0x0019);    // Retry count
+  
+  #ifndef W5200
+  __GP_REGISTER8 (RMSR,   0x001A);    // Receive memory size
+  __GP_REGISTER8 (TMSR,   0x001B);    // Transmit memory size
+  #endif
+  __GP_REGISTER8 (PATR,   0x001C);    // Authentication type address in PPPoE mode
+  
+  __GP_REGISTER8 (VERSIONR,0x001f);   // Chip version
+  
+  __GP_REGISTER8 (PTIMER, 0x0028);    // PPP LCP Request Timer
+  __GP_REGISTER8 (PMAGIC, 0x0029);    // PPP LCP Magic Number
+  #ifndef W5200
+  __GP_REGISTER_N(UIPR,   0x002A, 4); // Unreachable IP address in UDP mode
+  __GP_REGISTER16(UPORT,  0x002E);    // Unreachable Port address in UDP mode
+#endif
+  __GP_REGISTER8 (PHYSTATUS,0x0035);  // PHY Status
+  
+#undef __GP_REGISTER8
+#undef __GP_REGISTER16
+#undef __GP_REGISTER_N
+
+  // W5100 Socket registers
+  // ----------------------
+private:
+  static inline uint8_t readSn(SOCKET _s, uint16_t _addr);
+  static inline uint8_t writeSn(SOCKET _s, uint16_t _addr, uint8_t _data);
+  static inline uint16_t readSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t len);
+  static inline uint16_t writeSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t len);
+
+#ifdef W5200
+  static const uint16_t CH_BASE = 0x4000;
+#else
+  static const uint16_t CH_BASE = 0x0400;
+#endif  
+
+  static const uint16_t CH_SIZE = 0x0100;
+
+#define __SOCKET_REGISTER8(name, address)                    \
+  static inline void write##name(SOCKET _s, uint8_t _data) { \
+    writeSn(_s, address, _data);                             \
+  }                                                          \
+  static inline uint8_t read##name(SOCKET _s) {              \
+    return readSn(_s, address);                              \
+  }
+#define __SOCKET_REGISTER16(name, address)                   \
+  static void write##name(SOCKET _s, uint16_t _data) {       \
+    writeSn(_s, address,   _data >> 8);                      \
+    writeSn(_s, address+1, _data & 0xFF);                    \
+  }                                                          \
+  static uint16_t read##name(SOCKET _s) {                    \
+    uint16_t res = readSn(_s, address);                      \
+    res = (res << 8) + readSn(_s, address + 1);              \
+    return res;                                              \
+  }
+#define __SOCKET_REGISTER_N(name, address, size)             \
+  static uint16_t write##name(SOCKET _s, uint8_t *_buff) {   \
+    return writeSn(_s, address, _buff, size);                \
+  }                                                          \
+  static uint16_t read##name(SOCKET _s, uint8_t *_buff) {    \
+    return readSn(_s, address, _buff, size);                 \
+  }
+  
+public:
+  __SOCKET_REGISTER8(SnMR,        0x0000)        // Mode
+  __SOCKET_REGISTER8(SnCR,        0x0001)        // Command
+  __SOCKET_REGISTER8(SnIR,        0x0002)        // Interrupt
+  __SOCKET_REGISTER8(SnSR,        0x0003)        // Status
+  __SOCKET_REGISTER16(SnPORT,     0x0004)        // Source Port
+  __SOCKET_REGISTER_N(SnDHAR,     0x0006, 6)     // Destination Hardw Addr
+  __SOCKET_REGISTER_N(SnDIPR,     0x000C, 4)     // Destination IP Addr
+  __SOCKET_REGISTER16(SnDPORT,    0x0010)        // Destination Port
+  __SOCKET_REGISTER16(SnMSSR,     0x0012)        // Max Segment Size
+  __SOCKET_REGISTER8(SnPROTO,     0x0014)        // Protocol in IP RAW Mode
+  __SOCKET_REGISTER8(SnTOS,       0x0015)        // IP TOS
+  __SOCKET_REGISTER8(SnTTL,       0x0016)        // IP TTL
+  __SOCKET_REGISTER16(SnTX_FSR,   0x0020)        // TX Free Size
+  __SOCKET_REGISTER16(SnTX_RD,    0x0022)        // TX Read Pointer
+  __SOCKET_REGISTER16(SnTX_WR,    0x0024)        // TX Write Pointer
+  __SOCKET_REGISTER16(SnRX_RSR,   0x0026)        // RX Free Size
+  __SOCKET_REGISTER16(SnRX_RD,    0x0028)        // RX Read Pointer
+  __SOCKET_REGISTER16(SnRX_WR,    0x002A)        // RX Write Pointer (supported?)
+  
+#undef __SOCKET_REGISTER8
+#undef __SOCKET_REGISTER16
+#undef __SOCKET_REGISTER_N
+
+
+private:
+  static const uint8_t  RST = 7; // Reset BIT
+
+#ifdef W5200
+  static const int SOCKETS = 8;
+#else
+  static const int SOCKETS = 4;
+#endif
+
+  static const uint16_t SMASK = 0x07FF; // Tx buffer MASK
+  static const uint16_t RMASK = 0x07FF; // Rx buffer MASK
+public:
+  static const uint16_t SSIZE = 2048; // Max Tx buffer size
+private:
+  static const uint16_t RSIZE = 2048; // Max Rx buffer size
+  uint16_t SBASE[SOCKETS]; // Tx buffer base address
+  uint16_t RBASE[SOCKETS]; // Rx buffer base address
+
+private:
+#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
+  inline static void initSS()    { DDRB  |=  _BV(4); };
+  inline static void setSS()     { PORTB &= ~_BV(4); };
+  inline static void resetSS()   { PORTB |=  _BV(4); };
+#elif defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB162__)
+  inline static void initSS()    { DDRB  |=  _BV(0); };
+  inline static void setSS()     { PORTB &= ~_BV(0); };
+  inline static void resetSS()   { PORTB |=  _BV(0); }; 
+#else
+#ifndef MBED
+  inline static void initSS()    { DDRB  |=  _BV(2); };
+  inline static void setSS()     { PORTB &= ~_BV(2); };
+  inline static void resetSS()   { PORTB |=  _BV(2); };
+#endif //MBED
+#endif
+
+};
+
+extern W5100Class W5100;
+
+uint8_t W5100Class::readSn(SOCKET _s, uint16_t _addr) {
+  return read(CH_BASE + _s * CH_SIZE + _addr);
+}
+
+uint8_t W5100Class::writeSn(SOCKET _s, uint16_t _addr, uint8_t _data) {
+  return write(CH_BASE + _s * CH_SIZE + _addr, _data);
+}
+
+uint16_t W5100Class::readSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t _len) {
+  return read(CH_BASE + _s * CH_SIZE + _addr, _buf, _len);
+}
+
+uint16_t W5100Class::writeSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t _len) {
+  return write(CH_BASE + _s * CH_SIZE + _addr, _buf, _len);
+}
+
+void W5100Class::getGatewayIp(uint8_t *_addr) {
+  readGAR(_addr);
+}
+
+void W5100Class::setGatewayIp(uint8_t *_addr) {
+  writeGAR(_addr);
+}
+
+void W5100Class::getSubnetMask(uint8_t *_addr) {
+  readSUBR(_addr);
+}
+
+void W5100Class::setSubnetMask(uint8_t *_addr) {
+  writeSUBR(_addr);
+}
+
+void W5100Class::getMACAddress(uint8_t *_addr) {
+  readSHAR(_addr);
+}
+
+void W5100Class::setMACAddress(uint8_t *_addr) {
+  writeSHAR(_addr);
+}
+
+void W5100Class::getIPAddress(uint8_t *_addr) {
+  readSIPR(_addr);
+}
+
+void W5100Class::setIPAddress(uint8_t *_addr) {
+  writeSIPR(_addr);
+}
+
+void W5100Class::setRetransmissionTime(uint16_t _timeout) {
+  writeRTR(_timeout);
+}
+
+void W5100Class::setRetransmissionCount(uint8_t _retry) {
+  writeRCR(_retry);
+}
+
+#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/w5200NetIf.cpp	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,64 @@
+// w5200NetIf.cpp 2012/4/13
+#include "w5200NetIf.h"
+#include "DHCPClient.h"
+#include "w5100.h"
+
+w5200NetIf:: w5200NetIf():MyNetIf(), m_netmask(255,255,255,255), m_gateway(), m_hostname(NULL) {
+    m_hostname = NULL;
+    m_useDhcp = true;
+}
+
+w5200NetIf::w5200NetIf(IpAddr ip, IpAddr netmask, IpAddr gateway, IpAddr dns) :MyNetIf(), m_hostname(NULL) {
+    m_hostname = NULL;
+    m_ip = ip;
+    m_netmask = netmask;
+    m_gateway = gateway;
+    m_dns = dns;
+    m_useDhcp = false;
+}
+
+int w5200NetIf::IPrenew(int timeout_ms) {
+    printf("DHCP Started, waiting for IP...\n");  
+    DHCPClient dhcp;
+    int err = dhcp.setup(timeout_ms);
+    if (err == (-1)) {
+        printf("Timeout.\n");
+        return err;
+    }
+    printf("Connected, IP: %d.%d.%d.%d\n", dhcp.yiaddr[0], dhcp.yiaddr[1], dhcp.yiaddr[2], dhcp.yiaddr[3]);
+    m_ip = IpAddr(dhcp.yiaddr[0], dhcp.yiaddr[1], dhcp.yiaddr[2], dhcp.yiaddr[3]);
+    m_netmask = IpAddr(dhcp.netmask[0],dhcp.netmask[1],dhcp.netmask[2],dhcp.netmask[3]);
+    m_gateway = IpAddr(dhcp.gateway[0],dhcp.gateway[1],dhcp.gateway[2],dhcp.gateway[3]);
+    uint8_t t[4];
+    t[0] = m_ip[0];
+    t[1] = m_ip[1];
+    t[2] = m_ip[2];
+    t[3] = m_ip[3];
+    W5100.writeSIPR(t);
+    t[0] = m_netmask[0];
+    t[1] = m_netmask[1];
+    t[2] = m_netmask[2];
+    t[3] = m_netmask[3];
+    W5100.writeSUBR(t);
+    t[0] = m_gateway[0];
+    t[1] = m_gateway[1];
+    t[2] = m_gateway[2];
+    t[3] = m_gateway[3];
+    W5100.writeGAR(t);
+    return err;
+}
+
+int w5200NetIf::IPrelease(int timeout_ms) {
+    return -1;
+}
+
+int w5200NetIf::setup(int timeout_ms) {
+    MyNetIf::init();
+    uint8_t mac[6] = {0x00,0x00,0x5e,0x00,0x01,0x01};
+    W5100.setMACAddress(mac);
+    printf("HW Addr is : %02x:%02x:%02x:%02x:%02x:%02x.\n", mac[0],mac[1],mac[2],mac[3],mac[4],mac[5]);
+    if(! m_useDhcp) {
+        return 0;
+    }
+    return IPrenew(timeout_ms);
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/w5200NetIf.h	Sat Apr 14 17:21:11 2012 +0000
@@ -0,0 +1,20 @@
+// w5200NetIf.h 2012/4/13
+#ifndef W5200_NETIF_H
+#define W5200_NETIF_H
+#include "MyNetIf.h"
+
+class w5200NetIf : public MyNetIf {
+public:
+    w5200NetIf();
+    w5200NetIf(IpAddr ip, IpAddr netmask, IpAddr gateway, IpAddr dns);
+    int IPrenew(int timeout_ms = 15000);
+    int IPrelease(int timeout_ms = 15000);
+    int setup(int timeout_ms = 15000);
+private:
+    bool m_useDhcp;
+    IpAddr m_netmask;
+    IpAddr m_gateway;
+    IpAddr m_dns;
+    const char* m_hostname;
+};
+#endif //W5200_NETIF_H