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/* EthernetInterface.cpp */
/* Copyright (C) 2012 mbed.org, MIT License
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
* and associated documentation files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge, publish, distribute,
* sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or
* substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "EthernetInterface.h"
#include "lwip/inet.h"
#include "lwip/netif.h"
#include "netif/etharp.h"
#include "lwip/dhcp.h"
#include "eth_arch.h"
#include "lwip/tcpip.h"
#include "mbed.h"
/* TCP/IP and Network Interface Initialisation */
static struct netif netif;
static char mac_addr[19];
static char ip_addr[17] = "\0";
static char gateway[17] = "\0";
static char networkmask[17] = "\0";
static bool use_dhcp = false;
static Semaphore tcpip_inited(0);
static Semaphore netif_linked(0);
static Semaphore netif_up(0);
static void tcpip_init_done(void *arg) {
tcpip_inited.release();
}
static void netif_link_callback(struct netif *netif) {
if (netif_is_link_up(netif)) {
netif_linked.release();
}
}
static void netif_status_callback(struct netif *netif) {
if (netif_is_up(netif)) {
strcpy(ip_addr, inet_ntoa(netif->ip_addr));
strcpy(gateway, inet_ntoa(netif->gw));
strcpy(networkmask, inet_ntoa(netif->netmask));
netif_up.release();
}
}
static void init_netif(ip_addr_t *ipaddr, ip_addr_t *netmask, ip_addr_t *gw) {
tcpip_init(tcpip_init_done, NULL);
tcpip_inited.wait();
memset((void*) &netif, 0, sizeof(netif));
netif_add(&netif, ipaddr, netmask, gw, NULL, eth_arch_enetif_init, tcpip_input);
netif_set_default(&netif);
netif_set_link_callback (&netif, netif_link_callback);
netif_set_status_callback(&netif, netif_status_callback);
}
static void set_mac_address(void) {
#if (MBED_MAC_ADDRESS_SUM != MBED_MAC_ADDR_INTERFACE)
snprintf(mac_addr, 19, "%02x:%02x:%02x:%02x:%02x:%02x", MBED_MAC_ADDR_0, MBED_MAC_ADDR_1, MBED_MAC_ADDR_2,
MBED_MAC_ADDR_3, MBED_MAC_ADDR_4, MBED_MAC_ADDR_5);
#else
char mac[6];
mbed_mac_address(mac);
snprintf(mac_addr, 19, "%02x:%02x:%02x:%02x:%02x:%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
#endif
}
int EthernetInterface::init() {
use_dhcp = true;
set_mac_address();
init_netif(NULL, NULL, NULL);
return 0;
}
int EthernetInterface::init(const char* ip, const char* mask, const char* gateway) {
use_dhcp = false;
set_mac_address();
strcpy(ip_addr, ip);
ip_addr_t ip_n, mask_n, gateway_n;
inet_aton(ip, &ip_n);
inet_aton(mask, &mask_n);
inet_aton(gateway, &gateway_n);
init_netif(&ip_n, &mask_n, &gateway_n);
return 0;
}
int EthernetInterface::connect(unsigned int timeout_ms) {
eth_arch_enable_interrupts();
int inited;
if (use_dhcp) {
dhcp_start(&netif);
// Wait for an IP Address
// -1: error, 0: timeout
inited = netif_up.wait(timeout_ms);
} else {
netif_set_up(&netif);
// Wait for the link up
inited = netif_linked.wait(timeout_ms);
}
return (inited > 0) ? (0) : (-1);
}
int EthernetInterface::disconnect() {
if (use_dhcp) {
dhcp_release(&netif);
dhcp_stop(&netif);
} else {
netif_set_down(&netif);
}
eth_arch_disable_interrupts();
return 0;
}
char* EthernetInterface::getMACAddress() {
return mac_addr;
}
char* EthernetInterface::getIPAddress() {
return ip_addr;
}
char* EthernetInterface::getGateway() {
return gateway;
}
char* EthernetInterface::getNetworkMask() {
return networkmask;
}
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