tool/mbed/mbed-sdk/libraries/net/eth/EthernetInterface/EthernetInterface.cpp

   1 /* EthernetInterface.cpp */
   2 /* Copyright (C) 2012 mbed.org, MIT License
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
   5  * and associated documentation files (the "Software"), to deal in the Software without restriction,
   6  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
   7  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
   8  * furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice shall be included in all copies or
  11  * substantial portions of the Software.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
  14  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  16  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  17  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  18  */
  19 #include "EthernetInterface.h"
  20
  21 #include "lwip/inet.h"
  22 #include "lwip/netif.h"
  23 #include "netif/etharp.h"
  24 #include "lwip/dhcp.h"
  25 #include "eth_arch.h"
  26 #include "lwip/tcpip.h"
  27
  28 #include "mbed.h"
  29
  30 /* TCP/IP and Network Interface Initialisation */
  31 static struct netif netif;
  32
  33 static char mac_addr[19];
  34 static char ip_addr[17] = "\0";
  35 static char gateway[17] = "\0";
  36 static char networkmask[17] = "\0";
  37 static bool use_dhcp = false;
  38
  39 static Semaphore tcpip_inited(0);
  40 static Semaphore netif_linked(0);
  41 static Semaphore netif_up(0);
  42
  43 static void tcpip_init_done(void *arg) {
  44     tcpip_inited.release();
  45 }
  46
  47 static void netif_link_callback(struct netif *netif) {
  48     if (netif_is_link_up(netif)) {
  49         netif_linked.release();
  50     }
  51 }
  52
  53 static void netif_status_callback(struct netif *netif) {
  54     if (netif_is_up(netif)) {
  55         strcpy(ip_addr, inet_ntoa(netif->ip_addr));
  56         strcpy(gateway, inet_ntoa(netif->gw));
  57         strcpy(networkmask, inet_ntoa(netif->netmask));
  58         netif_up.release();
  59     }
  60 }
  61
  62 static void init_netif(ip_addr_t *ipaddr, ip_addr_t *netmask, ip_addr_t *gw) {
  63     tcpip_init(tcpip_init_done, NULL);
  64     tcpip_inited.wait();
  65
  66     memset((void*) &netif, 0, sizeof(netif));
  67     netif_add(&netif, ipaddr, netmask, gw, NULL, eth_arch_enetif_init, tcpip_input);
  68     netif_set_default(&netif);
  69
  70     netif_set_link_callback  (&netif, netif_link_callback);
  71     netif_set_status_callback(&netif, netif_status_callback);
  72 }
  73
  74 static void set_mac_address(void) {
  75 #if (MBED_MAC_ADDRESS_SUM != MBED_MAC_ADDR_INTERFACE)
  76     snprintf(mac_addr, 19, "%02x:%02x:%02x:%02x:%02x:%02x", MBED_MAC_ADDR_0, MBED_MAC_ADDR_1, MBED_MAC_ADDR_2,
  77              MBED_MAC_ADDR_3, MBED_MAC_ADDR_4, MBED_MAC_ADDR_5);
  78 #else
  79     char mac[6];
  80     mbed_mac_address(mac);
  81     snprintf(mac_addr, 19, "%02x:%02x:%02x:%02x:%02x:%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
  82 #endif
  83 }
  84
  85 int EthernetInterface::init() {
  86     use_dhcp = true;
  87     set_mac_address();
  88     init_netif(NULL, NULL, NULL);
  89     return 0;
  90 }
  91
  92 int EthernetInterface::init(const char* ip, const char* mask, const char* gateway) {
  93     use_dhcp = false;
  94
  95     set_mac_address();
  96     strcpy(ip_addr, ip);
  97
  98     ip_addr_t ip_n, mask_n, gateway_n;
  99     inet_aton(ip, &ip_n);
 100     inet_aton(mask, &mask_n);
 101     inet_aton(gateway, &gateway_n);
 102     init_netif(&ip_n, &mask_n, &gateway_n);
 103
 104     return 0;
 105 }
 106
 107 int EthernetInterface::connect(unsigned int timeout_ms) {
 108     eth_arch_enable_interrupts();
 109
 110     int inited;
 111     if (use_dhcp) {
 112         dhcp_start(&netif);
 113
 114         // Wait for an IP Address
 115         // -1: error, 0: timeout
 116         inited = netif_up.wait(timeout_ms);
 117     } else {
 118         netif_set_up(&netif);
 119
 120         // Wait for the link up
 121         inited = netif_linked.wait(timeout_ms);
 122     }
 123
 124     return (inited > 0) ? (0) : (-1);
 125 }
 126
 127 int EthernetInterface::disconnect() {
 128     if (use_dhcp) {
 129         dhcp_release(&netif);
 130         dhcp_stop(&netif);
 131     } else {
 132         netif_set_down(&netif);
 133     }
 134
 135     eth_arch_disable_interrupts();
 136
 137     return 0;
 138 }
 139
 140 char* EthernetInterface::getMACAddress() {
 141     return mac_addr;
 142 }
 143
 144 char* EthernetInterface::getIPAddress() {
 145     return ip_addr;
 146 }
 147
 148 char* EthernetInterface::getGateway() {
 149     return gateway;
 150 }
 151
 152 char* EthernetInterface::getNetworkMask() {
 153     return networkmask;
 154 }
 155
 156