adds getMACAddress() like getIPAddress(). Initializes in constructor.
Dependencies: Socket lwip-eth lwip-sys lwip
Dependents: EtherTest2 SmartLight
Fork of EthernetInterface by
EthernetInterface.cpp
00001 /* EthernetInterface.cpp */ 00002 /* Copyright (C) 2012 mbed.org, MIT License 00003 * 00004 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software 00005 * and associated documentation files (the "Software"), to deal in the Software without restriction, 00006 * including without limitation the rights to use, copy, modify, merge, publish, distribute, 00007 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is 00008 * furnished to do so, subject to the following conditions: 00009 * 00010 * The above copyright notice and this permission notice shall be included in all copies or 00011 * substantial portions of the Software. 00012 * 00013 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 00014 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00015 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 00016 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00017 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00018 */ 00019 #include "EthernetInterface.h" 00020 00021 #include "lwip/inet.h" 00022 #include "lwip/netif.h" 00023 #include "netif/etharp.h" 00024 #include "lwip/dhcp.h" 00025 #include "arch/lpc17_emac.h" 00026 #include "lpc_phy.h" 00027 #include "lwip/tcpip.h" 00028 00029 #include "mbed.h" 00030 00031 /* TCP/IP and Network Interface Initialisation */ 00032 static struct netif lpcNetif; 00033 00034 static Semaphore tcpip_inited(0); 00035 static Semaphore netif_inited(0); 00036 00037 static char ip_addr[16]; 00038 static char mac_addr[18]; 00039 static bool connected = false; 00040 static bool use_dhcp = false; 00041 00042 static void tcpip_init_done(void *arg) 00043 { 00044 tcpip_inited.release(); 00045 } 00046 00047 static void netif_status_callback(struct netif *netif) 00048 { 00049 strcpy(ip_addr, inet_ntoa(netif->ip_addr)); 00050 connected = netif_is_up(netif) ? true : false; 00051 netif_inited.release(); 00052 } 00053 static void init_netif(ip_addr_t *ipaddr, ip_addr_t *netmask, ip_addr_t *gw) 00054 { 00055 tcpip_init(tcpip_init_done, NULL); 00056 tcpip_inited.wait(); 00057 00058 memset((void*) &lpcNetif, 0, sizeof(lpcNetif)); 00059 netif_add(&lpcNetif, ipaddr, netmask, gw, NULL, lpc_enetif_init, tcpip_input); 00060 netif_set_default(&lpcNetif); 00061 netif_set_status_callback(&lpcNetif, netif_status_callback); 00062 } 00063 00064 EthernetInterface::EthernetInterface() 00065 { 00066 char mac[6]; 00067 mbed_mac_address(mac); 00068 snprintf(mac_addr, 18, "%02x:%02x:%02x:%02x:%02x:%02x\r\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); 00069 } 00070 00071 int EthernetInterface::init() 00072 { 00073 use_dhcp = true; 00074 init_netif(NULL, NULL, NULL); 00075 return 0; 00076 } 00077 00078 int EthernetInterface::init(const char* ip, const char* mask, const char* gateway) 00079 { 00080 use_dhcp = false; 00081 ip_addr_t ip_n, mask_n, gateway_n; 00082 inet_aton(ip, &ip_n); 00083 inet_aton(mask, &mask_n); 00084 inet_aton(gateway, &gateway_n); 00085 init_netif(&ip_n, &mask_n, &gateway_n); 00086 return 0; 00087 } 00088 00089 int EthernetInterface::connect(unsigned int timeout_ms) 00090 { 00091 NVIC_SetPriority(ENET_IRQn, ((0x01 << 3) | 0x01)); 00092 NVIC_EnableIRQ(ENET_IRQn); 00093 00094 if (use_dhcp) { 00095 dhcp_start(&lpcNetif); 00096 } else { 00097 netif_set_up(&lpcNetif); 00098 } 00099 00100 // -1: error, 0: timeout 00101 int inited = netif_inited.wait(timeout_ms); 00102 return (inited > 0) ? (0) : (-1); 00103 } 00104 00105 int EthernetInterface::disconnect() 00106 { 00107 if (use_dhcp) { 00108 dhcp_release(&lpcNetif); 00109 dhcp_stop(&lpcNetif); 00110 } else { 00111 netif_set_down(&lpcNetif); 00112 } 00113 00114 NVIC_DisableIRQ(ENET_IRQn); 00115 00116 return 0; 00117 } 00118 00119 char* EthernetInterface::getIPAddress() 00120 { 00121 return (connected) ? (ip_addr) : (NULL); 00122 } 00123 00124 char* EthernetInterface::getMACAddress() 00125 { 00126 return mac_addr; 00127 }
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