Diff: EthernetInterface/EthernetInterface.cpp

Revision:

0:7766f6712673

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EthernetInterface/EthernetInterface.cpp	Wed Mar 12 04:19:54 2014 +0000
@@ -0,0 +1,158 @@
+/* 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 "arch/lpc17_emac.h"
+#include "lpc_phy.h"
+#include "lwip/tcpip.h"
+
+#include "mbed.h"
+
+/* TCP/IP and Network Interface Initialisation */
+static struct netif lpcNetif;
+
+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*) &lpcNetif, 0, sizeof(lpcNetif));
+    netif_add(&lpcNetif, ipaddr, netmask, gw, NULL, lpc_enetif_init, tcpip_input);
+    netif_set_default(&lpcNetif);
+    
+    netif_set_link_callback  (&lpcNetif, netif_link_callback);
+    netif_set_status_callback(&lpcNetif, 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) {
+    NVIC_SetPriority(ENET_IRQn, ((0x01 << 3) | 0x01));
+    NVIC_EnableIRQ(ENET_IRQn);
+    
+    int inited;
+    if (use_dhcp) {
+        dhcp_start(&lpcNetif);
+        
+        // Wait for an IP Address
+        // -1: error, 0: timeout
+        inited = netif_up.wait(timeout_ms);
+    } else {
+        netif_set_up(&lpcNetif);
+        
+        // Wait for the link up
+        inited = netif_linked.wait(timeout_ms);
+    }
+    
+    return (inited > 0) ? (0) : (-1);
+}
+
+int EthernetInterface::disconnect() {
+    if (use_dhcp) {
+        dhcp_release(&lpcNetif);
+        dhcp_stop(&lpcNetif);
+    } else {
+        netif_set_down(&lpcNetif);
+    }
+    
+    NVIC_DisableIRQ(ENET_IRQn);
+    
+    return 0;
+}
+
+char* EthernetInterface::getMACAddress() {
+    return mac_addr;
+}
+
+char* EthernetInterface::getIPAddress() {
+    return ip_addr;
+}
+
+char* EthernetInterface::getGateway() {
+    return gateway;
+}
+
+char* EthernetInterface::getNetworkMask() {
+    return networkmask;
+}
+
+