Yi Hao Chen / EthernetInterface

Code and Libraries for Lab 4

Dependencies:   Socket lwip-eth lwip-sys lwip

Fork of EthernetInterface by mbed official

EthernetInterface.cpp@27:2124eae946f3, 2013-03-01 (annotated)

Committer:
emilmont
Date:
Fri Mar 01 15:33:02 2013 +0000
Revision:
27:2124eae946f3
Parent:
26:dd9794ce1d64
Child:
33:c21b055c45b8
Update lwIP and socket libraries.; Add "getMACAddress".

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"
donatien 3:f5776537f27f 25 #include "arch/lpc17_emac.h"
emilmont 14:cec293071eed 26 #include "lpc_phy.h"
donatien 3:f5776537f27f 27 #include "lwip/tcpip.h"
donatien 3:f5776537f27f 28
donatien 3:f5776537f27f 29 #include "mbed.h"
donatien 3:f5776537f27f 30
emilmont 14:cec293071eed 31 /* TCP/IP and Network Interface Initialisation */
emilmont 14:cec293071eed 32 static struct netif lpcNetif;
donatien 3:f5776537f27f 33
emilmont 27:2124eae946f3 34 static char mac_addr[19];
emilmont 27:2124eae946f3 35 static char ip_addr[17] = "\0";
emilmont 26:dd9794ce1d64 36 static bool use_dhcp = false;
donatien 3:f5776537f27f 37
emilmont 26:dd9794ce1d64 38 static Semaphore tcpip_inited(0);
emilmont 26:dd9794ce1d64 39 static Semaphore netif_linked(0);
emilmont 26:dd9794ce1d64 40 static Semaphore netif_up(0);
donatien 3:f5776537f27f 41
emilmont 14:cec293071eed 42 static void tcpip_init_done(void *arg) {
emilmont 14:cec293071eed 43 tcpip_inited.release();
emilmont 14:cec293071eed 44 }
emilmont 26:dd9794ce1d64 45
emilmont 26:dd9794ce1d64 46 static void netif_link_callback(struct netif *netif) {
emilmont 26:dd9794ce1d64 47 if (netif_is_link_up(netif)) {
emilmont 26:dd9794ce1d64 48 netif_linked.release();
emilmont 26:dd9794ce1d64 49 }
emilmont 26:dd9794ce1d64 50 }
emilmont 26:dd9794ce1d64 51
emilmont 14:cec293071eed 52 static void netif_status_callback(struct netif *netif) {
emilmont 26:dd9794ce1d64 53 if (netif_is_up(netif)) {
emilmont 26:dd9794ce1d64 54 strcpy(ip_addr, inet_ntoa(netif->ip_addr));
emilmont 26:dd9794ce1d64 55 netif_up.release();
emilmont 26:dd9794ce1d64 56 }
emilmont 14:cec293071eed 57 }
emilmont 26:dd9794ce1d64 58
emilmont 14:cec293071eed 59 static void init_netif(ip_addr_t *ipaddr, ip_addr_t *netmask, ip_addr_t *gw) {
emilmont 14:cec293071eed 60 tcpip_init(tcpip_init_done, NULL);
emilmont 14:cec293071eed 61 tcpip_inited.wait();
emilmont 14:cec293071eed 62
emilmont 14:cec293071eed 63 memset((void*) &lpcNetif, 0, sizeof(lpcNetif));
emilmont 22:2a797ba9babe 64 netif_add(&lpcNetif, ipaddr, netmask, gw, NULL, lpc_enetif_init, tcpip_input);
emilmont 14:cec293071eed 65 netif_set_default(&lpcNetif);
emilmont 26:dd9794ce1d64 66
emilmont 26:dd9794ce1d64 67 netif_set_link_callback (&lpcNetif, netif_link_callback);
emilmont 14:cec293071eed 68 netif_set_status_callback(&lpcNetif, netif_status_callback);
donatien 3:f5776537f27f 69 }
donatien 3:f5776537f27f 70
emilmont 27:2124eae946f3 71 static void set_mac_address(void) {
emilmont 27:2124eae946f3 72 char mac[6];
emilmont 27:2124eae946f3 73 mbed_mac_address(mac);
emilmont 27:2124eae946f3 74 snprintf(mac_addr, 19, "%02x:%02x:%02x:%02x:%02x:%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
emilmont 27:2124eae946f3 75 }
emilmont 27:2124eae946f3 76
emilmont 14:cec293071eed 77 int EthernetInterface::init() {
emilmont 14:cec293071eed 78 use_dhcp = true;
emilmont 27:2124eae946f3 79 set_mac_address();
emilmont 14:cec293071eed 80 init_netif(NULL, NULL, NULL);
emilmont 15:fd9597f1b81b 81 return 0;
donatien 3:f5776537f27f 82 }
donatien 3:f5776537f27f 83
emilmont 14:cec293071eed 84 int EthernetInterface::init(const char* ip, const char* mask, const char* gateway) {
emilmont 14:cec293071eed 85 use_dhcp = false;
emilmont 27:2124eae946f3 86
emilmont 27:2124eae946f3 87 set_mac_address();
emilmont 26:dd9794ce1d64 88 strcpy(ip_addr, ip);
emilmont 26:dd9794ce1d64 89
emilmont 14:cec293071eed 90 ip_addr_t ip_n, mask_n, gateway_n;
emilmont 14:cec293071eed 91 inet_aton(ip, &ip_n);
emilmont 14:cec293071eed 92 inet_aton(mask, &mask_n);
emilmont 14:cec293071eed 93 inet_aton(gateway, &gateway_n);
emilmont 14:cec293071eed 94 init_netif(&ip_n, &mask_n, &gateway_n);
emilmont 26:dd9794ce1d64 95
emilmont 15:fd9597f1b81b 96 return 0;
donatien 3:f5776537f27f 97 }
donatien 3:f5776537f27f 98
emilmont 21:8cd2de462559 99 int EthernetInterface::connect(unsigned int timeout_ms) {
emilmont 14:cec293071eed 100 NVIC_SetPriority(ENET_IRQn, ((0x01 << 3) | 0x01));
emilmont 14:cec293071eed 101 NVIC_EnableIRQ(ENET_IRQn);
emilmont 14:cec293071eed 102
emilmont 26:dd9794ce1d64 103 int inited;
emilmont 14:cec293071eed 104 if (use_dhcp) {
emilmont 14:cec293071eed 105 dhcp_start(&lpcNetif);
emilmont 26:dd9794ce1d64 106
emilmont 27:2124eae946f3 107 // Wait for an IP Address
emilmont 26:dd9794ce1d64 108 // -1: error, 0: timeout
emilmont 26:dd9794ce1d64 109 inited = netif_up.wait(timeout_ms);
emilmont 14:cec293071eed 110 } else {
emilmont 14:cec293071eed 111 netif_set_up(&lpcNetif);
emilmont 26:dd9794ce1d64 112
emilmont 26:dd9794ce1d64 113 // Wait for the link up
emilmont 26:dd9794ce1d64 114 inited = netif_linked.wait(timeout_ms);
emilmont 14:cec293071eed 115 }
emilmont 14:cec293071eed 116
emilmont 21:8cd2de462559 117 return (inited > 0) ? (0) : (-1);
donatien 3:f5776537f27f 118 }
donatien 3:f5776537f27f 119
emilmont 14:cec293071eed 120 int EthernetInterface::disconnect() {
emilmont 14:cec293071eed 121 if (use_dhcp) {
emilmont 14:cec293071eed 122 dhcp_release(&lpcNetif);
emilmont 14:cec293071eed 123 dhcp_stop(&lpcNetif);
emilmont 14:cec293071eed 124 } else {
emilmont 14:cec293071eed 125 netif_set_down(&lpcNetif);
emilmont 14:cec293071eed 126 }
emilmont 14:cec293071eed 127
emilmont 14:cec293071eed 128 NVIC_DisableIRQ(ENET_IRQn);
emilmont 14:cec293071eed 129
emilmont 15:fd9597f1b81b 130 return 0;
donatien 3:f5776537f27f 131 }
donatien 3:f5776537f27f 132
emilmont 27:2124eae946f3 133 char* EthernetInterface::getMACAddress() {
emilmont 27:2124eae946f3 134 return mac_addr;
emilmont 27:2124eae946f3 135 }
emilmont 27:2124eae946f3 136
emilmont 14:cec293071eed 137 char* EthernetInterface::getIPAddress() {
emilmont 26:dd9794ce1d64 138 return ip_addr;
emilmont 14:cec293071eed 139 }