Eduardo Pellini / F7_Ethernet_Pellini

Ethernet for Nucleo and Disco board STM32F746 works with gcc and arm. IAC is untested

Fork of F7_Ethernet by Dieter Graef

EthernetInterface.cpp@4:c63cab7b2bda, 2017-08-20 (annotated)

Committer:
TudaPellini
Date:
Sun Aug 20 22:09:22 2017 +0000
Revision:
4:c63cab7b2bda
Parent:
0:d26c1b55cfca 
Minor adjustments;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DieterGraef 0:d26c1b55cfca 1 /* EthernetInterface.cpp */
DieterGraef 0:d26c1b55cfca 2 /* Copyright (C) 2012 mbed.org, MIT License
DieterGraef 0:d26c1b55cfca 3 *
DieterGraef 0:d26c1b55cfca 4 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
DieterGraef 0:d26c1b55cfca 5 * and associated documentation files (the "Software"), to deal in the Software without restriction,
DieterGraef 0:d26c1b55cfca 6 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
DieterGraef 0:d26c1b55cfca 7 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
DieterGraef 0:d26c1b55cfca 8 * furnished to do so, subject to the following conditions:
DieterGraef 0:d26c1b55cfca 9 *
DieterGraef 0:d26c1b55cfca 10 * The above copyright notice and this permission notice shall be included in all copies or
DieterGraef 0:d26c1b55cfca 11 * substantial portions of the Software.
DieterGraef 0:d26c1b55cfca 12 *
DieterGraef 0:d26c1b55cfca 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
DieterGraef 0:d26c1b55cfca 14 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
DieterGraef 0:d26c1b55cfca 15 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DieterGraef 0:d26c1b55cfca 16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
DieterGraef 0:d26c1b55cfca 17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
DieterGraef 0:d26c1b55cfca 18 */
DieterGraef 0:d26c1b55cfca 19 #include "EthernetInterface.h"
DieterGraef 0:d26c1b55cfca 20
DieterGraef 0:d26c1b55cfca 21 #include "lwip/inet.h"
DieterGraef 0:d26c1b55cfca 22 #include "lwip/netif.h"
DieterGraef 0:d26c1b55cfca 23 #include "netif/etharp.h"
DieterGraef 0:d26c1b55cfca 24 #include "lwip/dhcp.h"
DieterGraef 0:d26c1b55cfca 25 #include "eth_arch.h"
DieterGraef 0:d26c1b55cfca 26 #include "lwip/tcpip.h"
DieterGraef 0:d26c1b55cfca 27
DieterGraef 0:d26c1b55cfca 28 #include "mbed.h"
DieterGraef 0:d26c1b55cfca 29
DieterGraef 0:d26c1b55cfca 30 /* TCP/IP and Network Interface Initialisation */
DieterGraef 0:d26c1b55cfca 31 static struct netif netif;
DieterGraef 0:d26c1b55cfca 32
DieterGraef 0:d26c1b55cfca 33 static char mac_addr[19];
DieterGraef 0:d26c1b55cfca 34 static char ip_addr[17] = "\0";
DieterGraef 0:d26c1b55cfca 35 static char gateway[17] = "\0";
DieterGraef 0:d26c1b55cfca 36 static char networkmask[17] = "\0";
DieterGraef 0:d26c1b55cfca 37 static bool use_dhcp = false;
DieterGraef 0:d26c1b55cfca 38
DieterGraef 0:d26c1b55cfca 39 static Semaphore tcpip_inited(0);
DieterGraef 0:d26c1b55cfca 40 static Semaphore netif_linked(0);
DieterGraef 0:d26c1b55cfca 41 static Semaphore netif_up(0);
DieterGraef 0:d26c1b55cfca 42
DieterGraef 0:d26c1b55cfca 43 static void tcpip_init_done(void *arg) {
DieterGraef 0:d26c1b55cfca 44 tcpip_inited.release();
DieterGraef 0:d26c1b55cfca 45 }
DieterGraef 0:d26c1b55cfca 46
DieterGraef 0:d26c1b55cfca 47 static void netif_link_callback(struct netif *netif) {
DieterGraef 0:d26c1b55cfca 48 if (netif_is_link_up(netif)) {
DieterGraef 0:d26c1b55cfca 49 netif_linked.release();
DieterGraef 0:d26c1b55cfca 50 }
DieterGraef 0:d26c1b55cfca 51 }
DieterGraef 0:d26c1b55cfca 52
DieterGraef 0:d26c1b55cfca 53 static void netif_status_callback(struct netif *netif) {
DieterGraef 0:d26c1b55cfca 54 if (netif_is_up(netif)) {
DieterGraef 0:d26c1b55cfca 55 strcpy(ip_addr, inet_ntoa(netif->ip_addr));
DieterGraef 0:d26c1b55cfca 56 strcpy(gateway, inet_ntoa(netif->gw));
DieterGraef 0:d26c1b55cfca 57 strcpy(networkmask, inet_ntoa(netif->netmask));
DieterGraef 0:d26c1b55cfca 58 netif_up.release();
DieterGraef 0:d26c1b55cfca 59 }
DieterGraef 0:d26c1b55cfca 60 }
DieterGraef 0:d26c1b55cfca 61
DieterGraef 0:d26c1b55cfca 62 static void init_netif(ip_addr_t *ipaddr, ip_addr_t *netmask, ip_addr_t *gw) {
DieterGraef 0:d26c1b55cfca 63 tcpip_init(tcpip_init_done, NULL);
DieterGraef 0:d26c1b55cfca 64 tcpip_inited.wait();
DieterGraef 0:d26c1b55cfca 65
DieterGraef 0:d26c1b55cfca 66 memset((void*) &netif, 0, sizeof(netif));
DieterGraef 0:d26c1b55cfca 67 netif_add(&netif, ipaddr, netmask, gw, NULL, eth_arch_enetif_init, tcpip_input);
DieterGraef 0:d26c1b55cfca 68 netif_set_default(&netif);
DieterGraef 0:d26c1b55cfca 69
DieterGraef 0:d26c1b55cfca 70 netif_set_link_callback (&netif, netif_link_callback);
DieterGraef 0:d26c1b55cfca 71 netif_set_status_callback(&netif, netif_status_callback);
DieterGraef 0:d26c1b55cfca 72 }
DieterGraef 0:d26c1b55cfca 73
DieterGraef 0:d26c1b55cfca 74 static void set_mac_address(void) {
DieterGraef 0:d26c1b55cfca 75 #if (MBED_MAC_ADDRESS_SUM != MBED_MAC_ADDR_INTERFACE)
DieterGraef 0:d26c1b55cfca 76 snprintf(mac_addr, 19, "%02x:%02x:%02x:%02x:%02x:%02x", MBED_MAC_ADDR_0, MBED_MAC_ADDR_1, MBED_MAC_ADDR_2,
DieterGraef 0:d26c1b55cfca 77 MBED_MAC_ADDR_3, MBED_MAC_ADDR_4, MBED_MAC_ADDR_5);
DieterGraef 0:d26c1b55cfca 78 #else
DieterGraef 0:d26c1b55cfca 79 char mac[6];
DieterGraef 0:d26c1b55cfca 80 mbed_mac_address(mac);
DieterGraef 0:d26c1b55cfca 81 snprintf(mac_addr, 19, "%02x:%02x:%02x:%02x:%02x:%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
DieterGraef 0:d26c1b55cfca 82 #endif
DieterGraef 0:d26c1b55cfca 83 }
DieterGraef 0:d26c1b55cfca 84
DieterGraef 0:d26c1b55cfca 85 int EthernetInterface::init() {
DieterGraef 0:d26c1b55cfca 86 use_dhcp = true;
DieterGraef 0:d26c1b55cfca 87 set_mac_address();
DieterGraef 0:d26c1b55cfca 88 init_netif(NULL, NULL, NULL);
DieterGraef 0:d26c1b55cfca 89 return 0;
DieterGraef 0:d26c1b55cfca 90 }
DieterGraef 0:d26c1b55cfca 91
DieterGraef 0:d26c1b55cfca 92 int EthernetInterface::init(const char* ip, const char* mask, const char* gateway) {
DieterGraef 0:d26c1b55cfca 93 use_dhcp = false;
DieterGraef 0:d26c1b55cfca 94
DieterGraef 0:d26c1b55cfca 95 set_mac_address();
DieterGraef 0:d26c1b55cfca 96 strcpy(ip_addr, ip);
DieterGraef 0:d26c1b55cfca 97
DieterGraef 0:d26c1b55cfca 98 ip_addr_t ip_n, mask_n, gateway_n;
DieterGraef 0:d26c1b55cfca 99 inet_aton(ip, &ip_n);
DieterGraef 0:d26c1b55cfca 100 inet_aton(mask, &mask_n);
DieterGraef 0:d26c1b55cfca 101 inet_aton(gateway, &gateway_n);
DieterGraef 0:d26c1b55cfca 102 init_netif(&ip_n, &mask_n, &gateway_n);
DieterGraef 0:d26c1b55cfca 103
DieterGraef 0:d26c1b55cfca 104 return 0;
DieterGraef 0:d26c1b55cfca 105 }
DieterGraef 0:d26c1b55cfca 106
DieterGraef 0:d26c1b55cfca 107 int EthernetInterface::connect(unsigned int timeout_ms) {
DieterGraef 0:d26c1b55cfca 108 eth_arch_enable_interrupts();
DieterGraef 0:d26c1b55cfca 109
DieterGraef 0:d26c1b55cfca 110 int inited;
DieterGraef 0:d26c1b55cfca 111 if (use_dhcp) {
DieterGraef 0:d26c1b55cfca 112 dhcp_start(&netif);
DieterGraef 0:d26c1b55cfca 113
DieterGraef 0:d26c1b55cfca 114 // Wait for an IP Address
DieterGraef 0:d26c1b55cfca 115 // -1: error, 0: timeout
DieterGraef 0:d26c1b55cfca 116 inited = netif_up.wait(timeout_ms);
DieterGraef 0:d26c1b55cfca 117 } else {
DieterGraef 0:d26c1b55cfca 118 netif_set_up(&netif);
DieterGraef 0:d26c1b55cfca 119
DieterGraef 0:d26c1b55cfca 120 // Wait for the link up
DieterGraef 0:d26c1b55cfca 121 inited = netif_linked.wait(timeout_ms);
DieterGraef 0:d26c1b55cfca 122 }
DieterGraef 0:d26c1b55cfca 123
DieterGraef 0:d26c1b55cfca 124 return (inited > 0) ? (0) : (-1);
DieterGraef 0:d26c1b55cfca 125 }
DieterGraef 0:d26c1b55cfca 126
DieterGraef 0:d26c1b55cfca 127 int EthernetInterface::disconnect() {
DieterGraef 0:d26c1b55cfca 128 if (use_dhcp) {
DieterGraef 0:d26c1b55cfca 129 dhcp_release(&netif);
DieterGraef 0:d26c1b55cfca 130 dhcp_stop(&netif);
DieterGraef 0:d26c1b55cfca 131 } else {
DieterGraef 0:d26c1b55cfca 132 netif_set_down(&netif);
DieterGraef 0:d26c1b55cfca 133 }
DieterGraef 0:d26c1b55cfca 134
DieterGraef 0:d26c1b55cfca 135 eth_arch_disable_interrupts();
DieterGraef 0:d26c1b55cfca 136
DieterGraef 0:d26c1b55cfca 137 return 0;
DieterGraef 0:d26c1b55cfca 138 }
DieterGraef 0:d26c1b55cfca 139
DieterGraef 0:d26c1b55cfca 140 char* EthernetInterface::getMACAddress() {
DieterGraef 0:d26c1b55cfca 141 return mac_addr;
DieterGraef 0:d26c1b55cfca 142 }
DieterGraef 0:d26c1b55cfca 143
DieterGraef 0:d26c1b55cfca 144 char* EthernetInterface::getIPAddress() {
DieterGraef 0:d26c1b55cfca 145 return ip_addr;
DieterGraef 0:d26c1b55cfca 146 }
DieterGraef 0:d26c1b55cfca 147
DieterGraef 0:d26c1b55cfca 148 char* EthernetInterface::getGateway() {
DieterGraef 0:d26c1b55cfca 149 return gateway;
DieterGraef 0:d26c1b55cfca 150 }
DieterGraef 0:d26c1b55cfca 151
DieterGraef 0:d26c1b55cfca 152 char* EthernetInterface::getNetworkMask() {
DieterGraef 0:d26c1b55cfca 153 return networkmask;
DieterGraef 0:d26c1b55cfca 154 }
DieterGraef 0:d26c1b55cfca 155
DieterGraef 0:d26c1b55cfca 156