Bongjun Hur / WIZ550ioInterface

no upgrade or change at this. move to new Library for WIZ550io, W5500 -> http://mbed.org/teams/EthernetInterfaceW5500-makers/code/W5500Interface/

Dependents:   LPC11U68_NTPClient_HelloWorld_WIZ550io

Fork of WIZ550ioInterface by ban4jp -

please get the new Library for WIZ550io, W5500 (WIZnet) http://mbed.org/teams/EthernetInterfaceW5500-makers/code/W5500Interface/

Import libraryW5500Interface

This is the Interface library for WIZnet W5500 chip which forked of EthernetInterfaceW5500, WIZnetInterface and WIZ550ioInterface. This library has simple name as "W5500Interface". and can be used for Wiz550io users also.

Last commit 28 Apr 2015 by W5500-Ethernet-Interface Makers

DHCPClient/DHCPClient.cpp@11:5a5a3f373a6b, 2014-07-08 (annotated)

Committer:
Bongjun
Date:
Tue Jul 08 03:49:33 2014 +0000
Revision:
11:5a5a3f373a6b
Parent:
5:fb15c35d1e28 
update some code after comparing WIZnet Library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
va009039 5:fb15c35d1e28 1 // DHCPClient.cpp 2013/4/10
va009039 5:fb15c35d1e28 2 #include "mbed.h"
va009039 5:fb15c35d1e28 3 #include "mbed_debug.h"
va009039 5:fb15c35d1e28 4 #include "UDPSocket.h"
va009039 5:fb15c35d1e28 5 #include "DHCPClient.h"
va009039 5:fb15c35d1e28 6
va009039 5:fb15c35d1e28 7 #define DBG_DHCP 0
va009039 5:fb15c35d1e28 8
va009039 5:fb15c35d1e28 9 #if DBG_DHCP
va009039 5:fb15c35d1e28 10 #define DBG(...) do{debug("[%s:%d]", __PRETTY_FUNCTION__,__LINE__);debug(__VA_ARGS__);} while(0);
va009039 5:fb15c35d1e28 11 #define DBG_HEX(A,B) do{debug("[%s:%d]\r\n", __PRETTY_FUNCTION__,__LINE__);debug_hex(A,B);} while(0);
va009039 5:fb15c35d1e28 12 #else
va009039 5:fb15c35d1e28 13 #define DBG(...) while(0);
va009039 5:fb15c35d1e28 14 #define DBG_HEX(A,B) while(0);
va009039 5:fb15c35d1e28 15 #endif
va009039 5:fb15c35d1e28 16
va009039 5:fb15c35d1e28 17 int DHCPClient::discover()
va009039 5:fb15c35d1e28 18 {
va009039 5:fb15c35d1e28 19 m_pos = 0;
va009039 5:fb15c35d1e28 20 const uint8_t header[] = {0x01,0x01,0x06,0x00};
va009039 5:fb15c35d1e28 21 add_buf((uint8_t*)header, sizeof(header));
va009039 5:fb15c35d1e28 22 uint32_t x = time(NULL) + rand();
va009039 5:fb15c35d1e28 23 xid[0] = x>>24; xid[1] = x>>16; xid[2] = x>>8; xid[3] = x;
va009039 5:fb15c35d1e28 24 add_buf(xid, 4);
va009039 5:fb15c35d1e28 25 fill_buf(20, 0x00);
va009039 5:fb15c35d1e28 26 add_buf(chaddr, 6);
va009039 5:fb15c35d1e28 27 fill_buf(10+192, 0x00);
va009039 5:fb15c35d1e28 28 const uint8_t options[] = {0x63,0x82,0x53,0x63, // magic cookie
va009039 5:fb15c35d1e28 29 53,1,DHCPDISCOVER, // DHCP option 53: DHCP Discover
va009039 5:fb15c35d1e28 30 55,4,1,3,15,6,
va009039 5:fb15c35d1e28 31 255};
va009039 5:fb15c35d1e28 32 add_buf((uint8_t*)options, sizeof(options));
va009039 5:fb15c35d1e28 33 return m_pos;
va009039 5:fb15c35d1e28 34 }
va009039 5:fb15c35d1e28 35
va009039 5:fb15c35d1e28 36 int DHCPClient::request()
va009039 5:fb15c35d1e28 37 {
va009039 5:fb15c35d1e28 38 m_pos = 0;
va009039 5:fb15c35d1e28 39 const uint8_t header[] = {0x01,0x01,0x06,0x00};
va009039 5:fb15c35d1e28 40 add_buf((uint8_t*)header, sizeof(header));
va009039 5:fb15c35d1e28 41 add_buf(xid, 4);
va009039 5:fb15c35d1e28 42 fill_buf(12, 0x00);
va009039 5:fb15c35d1e28 43 add_buf(siaddr, 4);
va009039 5:fb15c35d1e28 44 fill_buf(4, 0x00); // giaddr
va009039 5:fb15c35d1e28 45 add_buf(chaddr, 6);
va009039 5:fb15c35d1e28 46 fill_buf(10+192, 0x00);
va009039 5:fb15c35d1e28 47 const uint8_t options[] = {0x63,0x82,0x53,0x63, // magic cookie
va009039 5:fb15c35d1e28 48 53,1,DHCPREQUEST, // DHCP option 53: DHCP Request
va009039 5:fb15c35d1e28 49 55,4,1,3,15,6, // DHCP option 55:
va009039 5:fb15c35d1e28 50 };
va009039 5:fb15c35d1e28 51 add_buf((uint8_t*)options, sizeof(options));
va009039 5:fb15c35d1e28 52 add_option(50, yiaddr, 4);
va009039 5:fb15c35d1e28 53 add_option(54, siaddr, 4);
va009039 5:fb15c35d1e28 54 add_option(255);
va009039 5:fb15c35d1e28 55 return m_pos;
va009039 5:fb15c35d1e28 56 }
va009039 5:fb15c35d1e28 57
va009039 5:fb15c35d1e28 58 int DHCPClient::offer(uint8_t buf[], int size) {
va009039 5:fb15c35d1e28 59 memcpy(yiaddr, buf+DHCP_OFFSET_YIADDR, 4);
va009039 5:fb15c35d1e28 60 memcpy(siaddr, buf+DHCP_OFFSET_SIADDR, 4);
va009039 5:fb15c35d1e28 61 uint8_t *p;
va009039 5:fb15c35d1e28 62 int msg_type = -1;
va009039 5:fb15c35d1e28 63 p = buf + DHCP_OFFSET_OPTIONS;
va009039 5:fb15c35d1e28 64 while(*p != 255 && p < (buf+size)) {
va009039 5:fb15c35d1e28 65 uint8_t code = *p++;
va009039 5:fb15c35d1e28 66 if (code == 0) { // Pad Option
va009039 5:fb15c35d1e28 67 continue;
va009039 5:fb15c35d1e28 68 }
va009039 5:fb15c35d1e28 69 int len = *p++;
va009039 5:fb15c35d1e28 70
va009039 5:fb15c35d1e28 71 DBG("DHCP option: %d\r\n", code);
va009039 5:fb15c35d1e28 72 DBG_HEX(p, len);
va009039 5:fb15c35d1e28 73
va009039 5:fb15c35d1e28 74 switch(code) {
va009039 5:fb15c35d1e28 75 case 53:
va009039 5:fb15c35d1e28 76 msg_type = *p;
va009039 5:fb15c35d1e28 77 break;
va009039 5:fb15c35d1e28 78 case 1:
va009039 5:fb15c35d1e28 79 memcpy(netmask, p, 4); // Subnet mask address
va009039 5:fb15c35d1e28 80 break;
va009039 5:fb15c35d1e28 81 case 3:
va009039 5:fb15c35d1e28 82 memcpy(gateway, p, 4); // Gateway IP address
va009039 5:fb15c35d1e28 83 break;
va009039 5:fb15c35d1e28 84 case 6: // DNS server
va009039 5:fb15c35d1e28 85 memcpy(dnsaddr, p, 4);
va009039 5:fb15c35d1e28 86 break;
va009039 5:fb15c35d1e28 87 case 51: // IP lease time
va009039 5:fb15c35d1e28 88 break;
va009039 5:fb15c35d1e28 89 case 54: // DHCP server
va009039 5:fb15c35d1e28 90 memcpy(siaddr, p, 4);
va009039 5:fb15c35d1e28 91 break;
va009039 5:fb15c35d1e28 92 }
va009039 5:fb15c35d1e28 93 p += len;
va009039 5:fb15c35d1e28 94 }
va009039 5:fb15c35d1e28 95 return msg_type;
va009039 5:fb15c35d1e28 96 }
va009039 5:fb15c35d1e28 97
va009039 5:fb15c35d1e28 98 bool DHCPClient::verify(uint8_t buf[], int len) {
va009039 5:fb15c35d1e28 99 if (len < DHCP_OFFSET_OPTIONS) {
va009039 5:fb15c35d1e28 100 return false;
va009039 5:fb15c35d1e28 101 }
va009039 5:fb15c35d1e28 102 if (buf[DHCP_OFFSET_OP] != 0x02) {
va009039 5:fb15c35d1e28 103 return false;
va009039 5:fb15c35d1e28 104 }
va009039 5:fb15c35d1e28 105 if (memcmp(buf+DHCP_OFFSET_XID, xid, 4) != 0) {
va009039 5:fb15c35d1e28 106 return false;
va009039 5:fb15c35d1e28 107 }
va009039 5:fb15c35d1e28 108 return true;
va009039 5:fb15c35d1e28 109 }
va009039 5:fb15c35d1e28 110
va009039 5:fb15c35d1e28 111 void DHCPClient::callback()
va009039 5:fb15c35d1e28 112 {
va009039 5:fb15c35d1e28 113 Endpoint host;
va009039 5:fb15c35d1e28 114 int recv_len = m_udp->receiveFrom(host, (char*)m_buf, sizeof(m_buf));
va009039 5:fb15c35d1e28 115 if (recv_len < 0) {
va009039 5:fb15c35d1e28 116 return;
va009039 5:fb15c35d1e28 117 }
va009039 5:fb15c35d1e28 118 if (!verify(m_buf, recv_len)) {
va009039 5:fb15c35d1e28 119 return;
va009039 5:fb15c35d1e28 120 }
va009039 5:fb15c35d1e28 121 int r = offer(m_buf, recv_len);
va009039 5:fb15c35d1e28 122 if (r == DHCPOFFER) {
va009039 5:fb15c35d1e28 123 int send_size = request();
va009039 5:fb15c35d1e28 124 m_udp->sendTo(m_server, (char*)m_buf, send_size);
va009039 5:fb15c35d1e28 125 } else if (r == DHCPACK) {
va009039 5:fb15c35d1e28 126 exit_flag = true;
va009039 5:fb15c35d1e28 127 }
va009039 5:fb15c35d1e28 128 }
va009039 5:fb15c35d1e28 129
va009039 5:fb15c35d1e28 130 void DHCPClient::add_buf(uint8_t c)
va009039 5:fb15c35d1e28 131 {
va009039 5:fb15c35d1e28 132 m_buf[m_pos++] = c;
va009039 5:fb15c35d1e28 133 }
va009039 5:fb15c35d1e28 134
va009039 5:fb15c35d1e28 135 void DHCPClient::add_buf(uint8_t* buf, int len)
va009039 5:fb15c35d1e28 136 {
va009039 5:fb15c35d1e28 137 for(int i = 0; i < len; i++) {
va009039 5:fb15c35d1e28 138 add_buf(buf[i]);
va009039 5:fb15c35d1e28 139 }
va009039 5:fb15c35d1e28 140 }
va009039 5:fb15c35d1e28 141
va009039 5:fb15c35d1e28 142 void DHCPClient::fill_buf(int len, uint8_t data)
va009039 5:fb15c35d1e28 143 {
va009039 5:fb15c35d1e28 144 while(len-- > 0) {
va009039 5:fb15c35d1e28 145 add_buf(data);
va009039 5:fb15c35d1e28 146 }
va009039 5:fb15c35d1e28 147 }
va009039 5:fb15c35d1e28 148
va009039 5:fb15c35d1e28 149 void DHCPClient::add_option(uint8_t code, uint8_t* buf, int len)
va009039 5:fb15c35d1e28 150 {
va009039 5:fb15c35d1e28 151 add_buf(code);
va009039 5:fb15c35d1e28 152 if (len > 0) {
va009039 5:fb15c35d1e28 153 add_buf((uint8_t)len);
va009039 5:fb15c35d1e28 154 add_buf(buf, len);
va009039 5:fb15c35d1e28 155 }
va009039 5:fb15c35d1e28 156 }
va009039 5:fb15c35d1e28 157
va009039 5:fb15c35d1e28 158 int DHCPClient::setup(int timeout_ms)
va009039 5:fb15c35d1e28 159 {
va009039 5:fb15c35d1e28 160 eth = WIZ820io::getInstance();
va009039 5:fb15c35d1e28 161 if (eth == NULL) {
va009039 5:fb15c35d1e28 162 return -1;
va009039 5:fb15c35d1e28 163 }
va009039 5:fb15c35d1e28 164 eth->reg_rd_mac(SHAR, chaddr);
va009039 5:fb15c35d1e28 165 int interval_ms = 5*1000; // 5000msec
va009039 5:fb15c35d1e28 166 if (timeout_ms < interval_ms) {
va009039 5:fb15c35d1e28 167 interval_ms = timeout_ms;
va009039 5:fb15c35d1e28 168 }
va009039 5:fb15c35d1e28 169 m_udp = new UDPSocket;
va009039 5:fb15c35d1e28 170 m_udp->init();
va009039 5:fb15c35d1e28 171 m_udp->set_blocking(false);
va009039 5:fb15c35d1e28 172 eth->reg_wr<uint32_t>(SIPR, 0x00000000); // local ip "0.0.0.0"
va009039 5:fb15c35d1e28 173 m_udp->bind(68); // local port
va009039 5:fb15c35d1e28 174 m_server.set_address("255.255.255.255", 67); // DHCP broadcast
va009039 5:fb15c35d1e28 175 exit_flag = false;
va009039 5:fb15c35d1e28 176 int err = 0;
va009039 5:fb15c35d1e28 177 int seq = 0;
va009039 5:fb15c35d1e28 178 int send_size;
va009039 5:fb15c35d1e28 179 while(!exit_flag) {
va009039 5:fb15c35d1e28 180 switch(seq) {
va009039 5:fb15c35d1e28 181 case 0:
va009039 5:fb15c35d1e28 182 m_retry = 0;
va009039 5:fb15c35d1e28 183 seq++;
va009039 5:fb15c35d1e28 184 break;
va009039 5:fb15c35d1e28 185 case 1:
va009039 5:fb15c35d1e28 186 send_size = discover();
va009039 5:fb15c35d1e28 187 m_udp->sendTo(m_server, (char*)m_buf, send_size);
va009039 5:fb15c35d1e28 188 m_interval.reset();
va009039 5:fb15c35d1e28 189 m_interval.start();
va009039 5:fb15c35d1e28 190 seq++;
va009039 5:fb15c35d1e28 191 break;
va009039 5:fb15c35d1e28 192 case 2:
va009039 5:fb15c35d1e28 193 callback();
va009039 5:fb15c35d1e28 194 if (m_interval.read_ms() > interval_ms) {
va009039 5:fb15c35d1e28 195 DBG("m_retry: %d\n", m_retry);
va009039 5:fb15c35d1e28 196 if (++m_retry >= (timeout_ms/interval_ms)) {
va009039 5:fb15c35d1e28 197 err = -1;
va009039 5:fb15c35d1e28 198 exit_flag = true;
va009039 5:fb15c35d1e28 199 }
va009039 5:fb15c35d1e28 200 seq--;
va009039 5:fb15c35d1e28 201 }
va009039 5:fb15c35d1e28 202 break;
va009039 5:fb15c35d1e28 203 }
va009039 5:fb15c35d1e28 204 }
va009039 5:fb15c35d1e28 205 DBG("m_retry: %d, m_interval: %d\n", m_retry, m_interval.read_ms());
va009039 5:fb15c35d1e28 206 delete m_udp;
va009039 5:fb15c35d1e28 207 return err;
va009039 5:fb15c35d1e28 208 }
va009039 5:fb15c35d1e28 209
va009039 5:fb15c35d1e28 210 DHCPClient::DHCPClient() {
va009039 5:fb15c35d1e28 211 }