mbed IP library over Ethernet

Dependencies:   Socket lwip-eth lwip-sys lwip

Dependents:   EthHTTPServer HTTP-RPCServerExample

Fork of EthernetInterface by mbed official

Revision:
3:f5776537f27f
Child:
4:9a52c802be61
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EthernetInterface.cpp	Tue Jun 26 14:30:34 2012 +0000
@@ -0,0 +1,145 @@
+/* Ethernetnetwork.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.
+ */
+
+#define __DEBUG__ 4
+#ifndef __MODULE__
+#define __MODULE__ "EthernetInterface.cpp"
+#endif
+
+#include "core/fwk.h"
+
+#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" /* For the PHY monitor support */
+#include "lwip/tcpip.h"
+
+#include "mbed.h"
+
+
+EthernetInterface::EthernetInterface() : LwIPInterface(), m_lpcNetif(), m_netifStatusSphre(1), m_useDHCP(false)
+{
+  s_lpcNetifOff = (int32_t)( ((char*)this) - ((char*)&m_lpcNetif) );
+  m_netifStatusSphre.wait(0);
+}
+
+int EthernetInterface::init() //With DHCP
+{
+  m_useDHCP = true;
+
+  DBG("Initializing LwIP");
+  LwIPInterface::init(); //Init LwIP, NOT including PPP
+
+  DBG("DHCP IP assignment");
+
+  memset((void*)&m_lpcNetif, 0, sizeof(m_lpcNetif));
+  netif_add(&m_lpcNetif, NULL, NULL, NULL, NULL, lpc_enetif_init, ethernet_input/*tcpip_input???*/);
+  netif_set_default(&m_lpcNetif);
+  
+  netif_set_status_callback(&m_lpcNetif, &EthernetInterface::netifStatusCb);
+
+  return OK;
+}
+
+int EthernetInterface::init(const char* ip, const char* mask, const char* gateway,
+    const char* dns1, const char* dns2) //No DHCP
+{
+  ip_addr_t ip_n, mask_n, gateway_n, dns1_n, dns2_n;
+
+  m_useDHCP = false;
+
+  DBG("Initializing LwIP");
+  LwIPInterface::init(); //Init LwIP
+
+  DBG("Static IP assignment");
+  inet_aton(ip, &ip_n);
+  inet_aton(mask, &mask_n);
+  inet_aton(gateway, &gateway_n);
+  inet_aton(dns1, &dns1_n);
+  inet_aton(dns2, &dns2_n);
+
+  memset((void*)&m_lpcNetif, 0, sizeof(m_lpcNetif));
+  netif_add(&m_lpcNetif, &ip_n, &mask_n, &gateway_n, NULL, lpc_enetif_init, ethernet_input/*tcpip_input???*/);
+  netif_set_default(&m_lpcNetif);
+  
+  netif_set_status_callback(&m_lpcNetif, &EthernetInterface::netifStatusCb);
+
+  return OK;
+}
+
+int EthernetInterface::connect()
+{
+  m_netifStatusSphre.wait(0);
+
+  DBG("Enable MAC interrupts");
+  NVIC_SetPriority(ENET_IRQn, ((0x01 << 3) | 0x01));
+  NVIC_EnableIRQ(ENET_IRQn);
+
+  if(m_useDHCP)
+  {
+    dhcp_start(&m_lpcNetif); //The DHCP client will set the interface up once the IP/Netmask/Getway/DNS Servers are recovered
+  }
+  else
+  {
+    netif_set_up(&m_lpcNetif); //Set interface up
+  }
+  
+  m_netifStatusSphre.wait();
+  
+  DBG("Connected with IP %s", getIPAddress());
+
+  return OK;
+}
+
+int EthernetInterface::disconnect()
+{
+  m_netifStatusSphre.wait(0);
+
+  if(m_useDHCP)
+  {
+    dhcp_release(&m_lpcNetif); //Release the lease & bring interface down
+    dhcp_stop(&m_lpcNetif);
+  }
+  else
+  {
+    netif_set_down(&m_lpcNetif);  
+  }
+
+  DBG("Disable MAC interrupts");
+  NVIC_DisableIRQ(ENET_IRQn);
+  
+  m_netifStatusSphre.wait();
+
+  return OK;
+}
+
+/*static*/ void EthernetInterface::netifStatusCb(struct netif *netif)
+{
+    EthernetInterface* pIf = (EthernetInterface*)( ((int32_t)netif) + ((int32_t)s_lpcNetifOff) ); //Bad kludge
+    pIf->setIPAddress(inet_ntoa(netif->ip_addr));
+    pIf->setConnected(netif_is_up(netif)?true:false);
+    pIf->m_netifStatusSphre.wait(0); //Clear if pending
+    pIf->m_netifStatusSphre.release();
+}
+
+/*static*/ int32_t EthernetInterface::s_lpcNetifOff = 0;
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