Michael Kersh / Mbed 2 deprecated ECE4180EthernetTest

Ethernet test for ECE 4180 and others to find your IP address and do a simple HTTP GET request over port 80.

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

EthernetInterface/EthernetInterface.cpp@0:e7ca326e76ee, 2013-04-04 (annotated)

Committer:
mkersh3
Date:
Thu Apr 04 05:26:09 2013 +0000
Revision:
0:e7ca326e76ee
Ethernet Test for ECE4180 and others to find their IP Address and do a simple HTTP GET request over port 80.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mkersh3 0:e7ca326e76ee 1 /* EthernetInterface.cpp */
mkersh3 0:e7ca326e76ee 2 /* Copyright (C) 2012 mbed.org, MIT License
mkersh3 0:e7ca326e76ee 3 *
mkersh3 0:e7ca326e76ee 4 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
mkersh3 0:e7ca326e76ee 5 * and associated documentation files (the "Software"), to deal in the Software without restriction,
mkersh3 0:e7ca326e76ee 6 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
mkersh3 0:e7ca326e76ee 7 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
mkersh3 0:e7ca326e76ee 8 * furnished to do so, subject to the following conditions:
mkersh3 0:e7ca326e76ee 9 *
mkersh3 0:e7ca326e76ee 10 * The above copyright notice and this permission notice shall be included in all copies or
mkersh3 0:e7ca326e76ee 11 * substantial portions of the Software.
mkersh3 0:e7ca326e76ee 12 *
mkersh3 0:e7ca326e76ee 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
mkersh3 0:e7ca326e76ee 14 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
mkersh3 0:e7ca326e76ee 15 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
mkersh3 0:e7ca326e76ee 16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mkersh3 0:e7ca326e76ee 17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
mkersh3 0:e7ca326e76ee 18 */
mkersh3 0:e7ca326e76ee 19 #include "EthernetInterface.h"
mkersh3 0:e7ca326e76ee 20
mkersh3 0:e7ca326e76ee 21 #include "lwip/inet.h"
mkersh3 0:e7ca326e76ee 22 #include "lwip/netif.h"
mkersh3 0:e7ca326e76ee 23 #include "netif/etharp.h"
mkersh3 0:e7ca326e76ee 24 #include "lwip/dhcp.h"
mkersh3 0:e7ca326e76ee 25 #include "arch/lpc17_emac.h"
mkersh3 0:e7ca326e76ee 26 #include "lpc_phy.h"
mkersh3 0:e7ca326e76ee 27 #include "lwip/tcpip.h"
mkersh3 0:e7ca326e76ee 28
mkersh3 0:e7ca326e76ee 29 #include "mbed.h"
mkersh3 0:e7ca326e76ee 30
mkersh3 0:e7ca326e76ee 31 /* TCP/IP and Network Interface Initialisation */
mkersh3 0:e7ca326e76ee 32 static struct netif lpcNetif;
mkersh3 0:e7ca326e76ee 33
mkersh3 0:e7ca326e76ee 34 static Semaphore tcpip_inited(0);
mkersh3 0:e7ca326e76ee 35 static Semaphore netif_inited(0);
mkersh3 0:e7ca326e76ee 36
mkersh3 0:e7ca326e76ee 37 static char ip_addr[16];
mkersh3 0:e7ca326e76ee 38 static bool connected;
mkersh3 0:e7ca326e76ee 39 static bool use_dhcp = false;
mkersh3 0:e7ca326e76ee 40
mkersh3 0:e7ca326e76ee 41 static void tcpip_init_done(void *arg) {
mkersh3 0:e7ca326e76ee 42 tcpip_inited.release();
mkersh3 0:e7ca326e76ee 43 }
mkersh3 0:e7ca326e76ee 44 static void netif_status_callback(struct netif *netif) {
mkersh3 0:e7ca326e76ee 45 strcpy(ip_addr, inet_ntoa(netif->ip_addr));
mkersh3 0:e7ca326e76ee 46 connected = netif_is_up(netif) ? true : false;
mkersh3 0:e7ca326e76ee 47 netif_inited.release();
mkersh3 0:e7ca326e76ee 48 }
mkersh3 0:e7ca326e76ee 49 static void init_netif(ip_addr_t *ipaddr, ip_addr_t *netmask, ip_addr_t *gw) {
mkersh3 0:e7ca326e76ee 50 tcpip_init(tcpip_init_done, NULL);
mkersh3 0:e7ca326e76ee 51 tcpip_inited.wait();
mkersh3 0:e7ca326e76ee 52
mkersh3 0:e7ca326e76ee 53 memset((void*) &lpcNetif, 0, sizeof(lpcNetif));
mkersh3 0:e7ca326e76ee 54 netif_add(&lpcNetif, ipaddr, netmask, gw, NULL, lpc_enetif_init, tcpip_input);
mkersh3 0:e7ca326e76ee 55 netif_set_default(&lpcNetif);
mkersh3 0:e7ca326e76ee 56 netif_set_status_callback(&lpcNetif, netif_status_callback);
mkersh3 0:e7ca326e76ee 57 }
mkersh3 0:e7ca326e76ee 58
mkersh3 0:e7ca326e76ee 59 int EthernetInterface::init() {
mkersh3 0:e7ca326e76ee 60 use_dhcp = true;
mkersh3 0:e7ca326e76ee 61 init_netif(NULL, NULL, NULL);
mkersh3 0:e7ca326e76ee 62 return 0;
mkersh3 0:e7ca326e76ee 63 }
mkersh3 0:e7ca326e76ee 64
mkersh3 0:e7ca326e76ee 65 int EthernetInterface::init(const char* ip, const char* mask, const char* gateway) {
mkersh3 0:e7ca326e76ee 66 use_dhcp = false;
mkersh3 0:e7ca326e76ee 67 ip_addr_t ip_n, mask_n, gateway_n;
mkersh3 0:e7ca326e76ee 68 inet_aton(ip, &ip_n);
mkersh3 0:e7ca326e76ee 69 inet_aton(mask, &mask_n);
mkersh3 0:e7ca326e76ee 70 inet_aton(gateway, &gateway_n);
mkersh3 0:e7ca326e76ee 71 init_netif(&ip_n, &mask_n, &gateway_n);
mkersh3 0:e7ca326e76ee 72 return 0;
mkersh3 0:e7ca326e76ee 73 }
mkersh3 0:e7ca326e76ee 74
mkersh3 0:e7ca326e76ee 75 int EthernetInterface::connect(unsigned int timeout_ms) {
mkersh3 0:e7ca326e76ee 76 NVIC_SetPriority(ENET_IRQn, ((0x01 << 3) | 0x01));
mkersh3 0:e7ca326e76ee 77 NVIC_EnableIRQ(ENET_IRQn);
mkersh3 0:e7ca326e76ee 78
mkersh3 0:e7ca326e76ee 79 if (use_dhcp) {
mkersh3 0:e7ca326e76ee 80 dhcp_start(&lpcNetif);
mkersh3 0:e7ca326e76ee 81 } else {
mkersh3 0:e7ca326e76ee 82 netif_set_up(&lpcNetif);
mkersh3 0:e7ca326e76ee 83 }
mkersh3 0:e7ca326e76ee 84
mkersh3 0:e7ca326e76ee 85 // -1: error, 0: timeout
mkersh3 0:e7ca326e76ee 86 int inited = netif_inited.wait(timeout_ms);
mkersh3 0:e7ca326e76ee 87 return (inited > 0) ? (0) : (-1);
mkersh3 0:e7ca326e76ee 88 }
mkersh3 0:e7ca326e76ee 89
mkersh3 0:e7ca326e76ee 90 int EthernetInterface::disconnect() {
mkersh3 0:e7ca326e76ee 91 if (use_dhcp) {
mkersh3 0:e7ca326e76ee 92 dhcp_release(&lpcNetif);
mkersh3 0:e7ca326e76ee 93 dhcp_stop(&lpcNetif);
mkersh3 0:e7ca326e76ee 94 } else {
mkersh3 0:e7ca326e76ee 95 netif_set_down(&lpcNetif);
mkersh3 0:e7ca326e76ee 96 }
mkersh3 0:e7ca326e76ee 97
mkersh3 0:e7ca326e76ee 98 NVIC_DisableIRQ(ENET_IRQn);
mkersh3 0:e7ca326e76ee 99
mkersh3 0:e7ca326e76ee 100 return 0;
mkersh3 0:e7ca326e76ee 101 }
mkersh3 0:e7ca326e76ee 102
mkersh3 0:e7ca326e76ee 103 char* EthernetInterface::getIPAddress() {
mkersh3 0:e7ca326e76ee 104 return (connected) ? (ip_addr) : (NULL);
mkersh3 0:e7ca326e76ee 105 }