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mbed client lightswitch demo
Dependencies: mbed Socket lwip-eth lwip-sys lwip
Fork of mbed-client-classic-example-lwip by
Diff: EthernetInterface/EthernetInterface.cpp
- Revision:
- 11:cada08fc8a70
diff -r 1280c4c21987 -r cada08fc8a70 EthernetInterface/EthernetInterface.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/EthernetInterface/EthernetInterface.cpp Thu Jun 09 17:08:36 2016 +0000 @@ -0,0 +1,156 @@ +/* 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; +} + +