Girishchandra Yendargaye / EthernetInterface

mbed IP library over Ethernet

Dependencies:   Socket lwip-eth lwip-sys lwip

Dependents:   iot_gateway

Fork of EthernetInterface by mbed official

EthernetInterface.cpp@55:5107c978c6ff, 2016-12-12 (annotated)

Committer:
girishy
Date:
Mon Dec 12 10:52:09 2016 +0000
Revision:
55:5107c978c6ff
Parent:
37:926eb6517318 
iot gateway

Who changed what in which revision?

UserRevisionLine numberNew contents of line
donatien 4:9a52c802be61 1 /* EthernetInterface.cpp */
donatien 3:f5776537f27f 2 /* Copyright (C) 2012 mbed.org, MIT License
donatien 3:f5776537f27f 3 *
donatien 3:f5776537f27f 4 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
donatien 3:f5776537f27f 5 * and associated documentation files (the "Software"), to deal in the Software without restriction,
donatien 3:f5776537f27f 6 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
donatien 3:f5776537f27f 7 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
donatien 3:f5776537f27f 8 * furnished to do so, subject to the following conditions:
donatien 3:f5776537f27f 9 *
donatien 3:f5776537f27f 10 * The above copyright notice and this permission notice shall be included in all copies or
donatien 3:f5776537f27f 11 * substantial portions of the Software.
donatien 3:f5776537f27f 12 *
donatien 3:f5776537f27f 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
donatien 3:f5776537f27f 14 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
donatien 3:f5776537f27f 15 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
donatien 3:f5776537f27f 16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
donatien 3:f5776537f27f 17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
donatien 3:f5776537f27f 18 */
donatien 3:f5776537f27f 19 #include "EthernetInterface.h"
donatien 3:f5776537f27f 20
donatien 3:f5776537f27f 21 #include "lwip/inet.h"
donatien 3:f5776537f27f 22 #include "lwip/netif.h"
donatien 3:f5776537f27f 23 #include "netif/etharp.h"
donatien 3:f5776537f27f 24 #include "lwip/dhcp.h"
mbed_official 37:926eb6517318 25 #include "eth_arch.h"
donatien 3:f5776537f27f 26 #include "lwip/tcpip.h"
donatien 3:f5776537f27f 27
donatien 3:f5776537f27f 28 #include "mbed.h"
donatien 3:f5776537f27f 29
emilmont 14:cec293071eed 30 /* TCP/IP and Network Interface Initialisation */
mbed_official 37:926eb6517318 31 static struct netif netif;
donatien 3:f5776537f27f 32
emilmont 27:2124eae946f3 33 static char mac_addr[19];
emilmont 27:2124eae946f3 34 static char ip_addr[17] = "\0";
mbed_official 35:cba86db5ab96 35 static char gateway[17] = "\0";
mbed_official 35:cba86db5ab96 36 static char networkmask[17] = "\0";
emilmont 26:dd9794ce1d64 37 static bool use_dhcp = false;
donatien 3:f5776537f27f 38
emilmont 26:dd9794ce1d64 39 static Semaphore tcpip_inited(0);
emilmont 26:dd9794ce1d64 40 static Semaphore netif_linked(0);
emilmont 26:dd9794ce1d64 41 static Semaphore netif_up(0);
donatien 3:f5776537f27f 42
emilmont 14:cec293071eed 43 static void tcpip_init_done(void *arg) {
emilmont 14:cec293071eed 44 tcpip_inited.release();
emilmont 14:cec293071eed 45 }
emilmont 26:dd9794ce1d64 46
emilmont 26:dd9794ce1d64 47 static void netif_link_callback(struct netif *netif) {
emilmont 26:dd9794ce1d64 48 if (netif_is_link_up(netif)) {
emilmont 26:dd9794ce1d64 49 netif_linked.release();
emilmont 26:dd9794ce1d64 50 }
emilmont 26:dd9794ce1d64 51 }
emilmont 26:dd9794ce1d64 52
emilmont 14:cec293071eed 53 static void netif_status_callback(struct netif *netif) {
emilmont 26:dd9794ce1d64 54 if (netif_is_up(netif)) {
emilmont 26:dd9794ce1d64 55 strcpy(ip_addr, inet_ntoa(netif->ip_addr));
mbed_official 35:cba86db5ab96 56 strcpy(gateway, inet_ntoa(netif->gw));
mbed_official 35:cba86db5ab96 57 strcpy(networkmask, inet_ntoa(netif->netmask));
emilmont 26:dd9794ce1d64 58 netif_up.release();
emilmont 26:dd9794ce1d64 59 }
emilmont 14:cec293071eed 60 }
emilmont 26:dd9794ce1d64 61
emilmont 14:cec293071eed 62 static void init_netif(ip_addr_t *ipaddr, ip_addr_t *netmask, ip_addr_t *gw) {
emilmont 14:cec293071eed 63 tcpip_init(tcpip_init_done, NULL);
emilmont 14:cec293071eed 64 tcpip_inited.wait();
emilmont 14:cec293071eed 65
mbed_official 37:926eb6517318 66 memset((void*) &netif, 0, sizeof(netif));
mbed_official 37:926eb6517318 67 netif_add(&netif, ipaddr, netmask, gw, NULL, eth_arch_enetif_init, tcpip_input);
mbed_official 37:926eb6517318 68 netif_set_default(&netif);
emilmont 26:dd9794ce1d64 69
mbed_official 37:926eb6517318 70 netif_set_link_callback (&netif, netif_link_callback);
mbed_official 37:926eb6517318 71 netif_set_status_callback(&netif, netif_status_callback);
donatien 3:f5776537f27f 72 }
donatien 3:f5776537f27f 73
emilmont 27:2124eae946f3 74 static void set_mac_address(void) {
bogdanm 33:c21b055c45b8 75 #if (MBED_MAC_ADDRESS_SUM != MBED_MAC_ADDR_INTERFACE)
bogdanm 33:c21b055c45b8 76 snprintf(mac_addr, 19, "%02x:%02x:%02x:%02x:%02x:%02x", MBED_MAC_ADDR_0, MBED_MAC_ADDR_1, MBED_MAC_ADDR_2,
bogdanm 33:c21b055c45b8 77 MBED_MAC_ADDR_3, MBED_MAC_ADDR_4, MBED_MAC_ADDR_5);
bogdanm 33:c21b055c45b8 78 #else
emilmont 27:2124eae946f3 79 char mac[6];
emilmont 27:2124eae946f3 80 mbed_mac_address(mac);
emilmont 27:2124eae946f3 81 snprintf(mac_addr, 19, "%02x:%02x:%02x:%02x:%02x:%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
bogdanm 33:c21b055c45b8 82 #endif
emilmont 27:2124eae946f3 83 }
emilmont 27:2124eae946f3 84
emilmont 14:cec293071eed 85 int EthernetInterface::init() {
emilmont 14:cec293071eed 86 use_dhcp = true;
emilmont 27:2124eae946f3 87 set_mac_address();
emilmont 14:cec293071eed 88 init_netif(NULL, NULL, NULL);
emilmont 15:fd9597f1b81b 89 return 0;
donatien 3:f5776537f27f 90 }
donatien 3:f5776537f27f 91
emilmont 14:cec293071eed 92 int EthernetInterface::init(const char* ip, const char* mask, const char* gateway) {
emilmont 14:cec293071eed 93 use_dhcp = false;
emilmont 27:2124eae946f3 94
emilmont 27:2124eae946f3 95 set_mac_address();
emilmont 26:dd9794ce1d64 96 strcpy(ip_addr, ip);
emilmont 26:dd9794ce1d64 97
emilmont 14:cec293071eed 98 ip_addr_t ip_n, mask_n, gateway_n;
emilmont 14:cec293071eed 99 inet_aton(ip, &ip_n);
emilmont 14:cec293071eed 100 inet_aton(mask, &mask_n);
emilmont 14:cec293071eed 101 inet_aton(gateway, &gateway_n);
emilmont 14:cec293071eed 102 init_netif(&ip_n, &mask_n, &gateway_n);
emilmont 26:dd9794ce1d64 103
emilmont 15:fd9597f1b81b 104 return 0;
donatien 3:f5776537f27f 105 }
donatien 3:f5776537f27f 106
emilmont 21:8cd2de462559 107 int EthernetInterface::connect(unsigned int timeout_ms) {
mbed_official 37:926eb6517318 108 eth_arch_enable_interrupts();
mbed_official 37:926eb6517318 109
emilmont 26:dd9794ce1d64 110 int inited;
emilmont 14:cec293071eed 111 if (use_dhcp) {
mbed_official 37:926eb6517318 112 dhcp_start(&netif);
emilmont 26:dd9794ce1d64 113
emilmont 27:2124eae946f3 114 // Wait for an IP Address
emilmont 26:dd9794ce1d64 115 // -1: error, 0: timeout
emilmont 26:dd9794ce1d64 116 inited = netif_up.wait(timeout_ms);
emilmont 14:cec293071eed 117 } else {
mbed_official 37:926eb6517318 118 netif_set_up(&netif);
emilmont 26:dd9794ce1d64 119
emilmont 26:dd9794ce1d64 120 // Wait for the link up
emilmont 26:dd9794ce1d64 121 inited = netif_linked.wait(timeout_ms);
emilmont 14:cec293071eed 122 }
emilmont 14:cec293071eed 123
emilmont 21:8cd2de462559 124 return (inited > 0) ? (0) : (-1);
donatien 3:f5776537f27f 125 }
donatien 3:f5776537f27f 126
emilmont 14:cec293071eed 127 int EthernetInterface::disconnect() {
emilmont 14:cec293071eed 128 if (use_dhcp) {
mbed_official 37:926eb6517318 129 dhcp_release(&netif);
mbed_official 37:926eb6517318 130 dhcp_stop(&netif);
emilmont 14:cec293071eed 131 } else {
mbed_official 37:926eb6517318 132 netif_set_down(&netif);
emilmont 14:cec293071eed 133 }
emilmont 14:cec293071eed 134
mbed_official 37:926eb6517318 135 eth_arch_disable_interrupts();
emilmont 14:cec293071eed 136
emilmont 15:fd9597f1b81b 137 return 0;
donatien 3:f5776537f27f 138 }
donatien 3:f5776537f27f 139
emilmont 27:2124eae946f3 140 char* EthernetInterface::getMACAddress() {
emilmont 27:2124eae946f3 141 return mac_addr;
emilmont 27:2124eae946f3 142 }
emilmont 27:2124eae946f3 143
emilmont 14:cec293071eed 144 char* EthernetInterface::getIPAddress() {
emilmont 26:dd9794ce1d64 145 return ip_addr;
emilmont 14:cec293071eed 146 }
mbed_official 35:cba86db5ab96 147
mbed_official 35:cba86db5ab96 148 char* EthernetInterface::getGateway() {
mbed_official 35:cba86db5ab96 149 return gateway;
mbed_official 35:cba86db5ab96 150 }
mbed_official 35:cba86db5ab96 151
mbed_official 35:cba86db5ab96 152 char* EthernetInterface::getNetworkMask() {
mbed_official 35:cba86db5ab96 153 return networkmask;
mbed_official 35:cba86db5ab96 154 }