Diff: EthernetInterface/EthernetInterface.cpp

Revision:

0:0ed2a7c7190c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EthernetInterface/EthernetInterface.cpp	Fri May 31 04:09:54 2013 +0000
@@ -0,0 +1,105 @@
+/* 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 Semaphore tcpip_inited(0);
+static Semaphore netif_inited(0);
+
+static char ip_addr[16];
+static bool connected;
+static bool use_dhcp = false;
+
+static void tcpip_init_done(void *arg) {
+    tcpip_inited.release();
+}
+static void netif_status_callback(struct netif *netif) {
+    strcpy(ip_addr, inet_ntoa(netif->ip_addr));
+    connected = netif_is_up(netif) ? true : false;
+    netif_inited.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, ethernet_input);
+    netif_set_default(&lpcNetif);
+    netif_set_status_callback(&lpcNetif, netif_status_callback);
+}
+
+int EthernetInterface::init() {
+    use_dhcp = true;
+    init_netif(NULL, NULL, NULL);
+    return 0;
+}
+
+int EthernetInterface::init(const char* ip, const char* mask, const char* gateway) {
+    use_dhcp = false;
+    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() {
+    NVIC_SetPriority(ENET_IRQn, ((0x01 << 3) | 0x01));
+    NVIC_EnableIRQ(ENET_IRQn);
+    
+    if (use_dhcp) {
+        dhcp_start(&lpcNetif);
+    } else {
+        netif_set_up(&lpcNetif);
+    }
+    
+    netif_inited.wait();
+    
+    return 0;
+}
+
+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::getIPAddress() {
+    return (connected) ? (ip_addr) : (NULL);
+}