Ethernet Interface Networking Library

Dependencies:   LwIPNetworking lwip-eth

Dependents:   CPPSocketsTest

Fork of EthernetNetworkLib by Donatien Garnier

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Show/hide line numbers EthernetInterface.cpp Source File

EthernetInterface.cpp

00001 /* Ethernetnetwork.cpp */
00002 /* Copyright (C) 2012 mbed.org, MIT License
00003  *
00004  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
00005  * and associated documentation files (the "Software"), to deal in the Software without restriction,
00006  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
00007  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
00008  * furnished to do so, subject to the following conditions:
00009  *
00010  * The above copyright notice and this permission notice shall be included in all copies or
00011  * substantial portions of the Software.
00012  *
00013  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
00014  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00015  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
00016  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00017  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00018  */
00019 
00020 #define __DEBUG__ 4
00021 #ifndef __MODULE__
00022 #define __MODULE__ "EthernetInterface.cpp"
00023 #endif
00024 
00025 #include "core/fwk.h"
00026 
00027 #include "EthernetInterface.h"
00028 
00029 #include "lwip/inet.h"
00030 #include "lwip/netif.h"
00031 #include "netif/etharp.h"
00032 #include "lwip/dhcp.h"
00033 #include "arch/lpc17_emac.h"
00034 #include "lpc_phy.h" /* For the PHY monitor support */
00035 #include "lwip/tcpip.h"
00036 
00037 #include "mbed.h"
00038 
00039 
00040 EthernetInterface::EthernetInterface() : LwIPInterface(), m_lpcNetif(), m_netifStatusSphre(1), m_useDHCP(false)
00041 {
00042   s_lpcNetifOff = (int32_t)( ((char*)this) - ((char*)&m_lpcNetif) );
00043   m_netifStatusSphre.wait(0);
00044 }
00045 
00046 int EthernetInterface::init() //With DHCP
00047 {
00048   m_useDHCP = true;
00049 
00050   DBG("Initializing LwIP");
00051   LwIPInterface::init(); //Init LwIP, NOT including PPP
00052 
00053   DBG("DHCP IP assignment");
00054 
00055   memset((void*)&m_lpcNetif, 0, sizeof(m_lpcNetif));
00056   netif_add(&m_lpcNetif, NULL, NULL, NULL, NULL, lpc_enetif_init, ethernet_input/*tcpip_input???*/);
00057   netif_set_default(&m_lpcNetif);
00058   
00059   netif_set_status_callback(&m_lpcNetif, &EthernetInterface::netifStatusCb);
00060 
00061   return OK;
00062 }
00063 
00064 int EthernetInterface::init(const char* ip, const char* mask, const char* gateway,
00065     const char* dns1, const char* dns2) //No DHCP
00066 {
00067   ip_addr_t ip_n, mask_n, gateway_n, dns1_n, dns2_n;
00068 
00069   m_useDHCP = false;
00070 
00071   DBG("Initializing LwIP");
00072   LwIPInterface::init(); //Init LwIP
00073 
00074   DBG("Static IP assignment");
00075   inet_aton(ip, &ip_n);
00076   inet_aton(mask, &mask_n);
00077   inet_aton(gateway, &gateway_n);
00078   inet_aton(dns1, &dns1_n);
00079   inet_aton(dns2, &dns2_n);
00080 
00081   memset((void*)&m_lpcNetif, 0, sizeof(m_lpcNetif));
00082   netif_add(&m_lpcNetif, &ip_n, &mask_n, &gateway_n, NULL, lpc_enetif_init, ethernet_input/*tcpip_input???*/);
00083   netif_set_default(&m_lpcNetif);
00084   
00085   netif_set_status_callback(&m_lpcNetif, &EthernetInterface::netifStatusCb);
00086 
00087   return OK;
00088 }
00089 
00090 int EthernetInterface::connect()
00091 {
00092   m_netifStatusSphre.wait(0);
00093 
00094   DBG("Enable MAC interrupts");
00095   NVIC_SetPriority(ENET_IRQn, ((0x01 << 3) | 0x01));
00096   NVIC_EnableIRQ(ENET_IRQn);
00097 
00098   if(m_useDHCP)
00099   {
00100     dhcp_start(&m_lpcNetif); //The DHCP client will set the interface up once the IP/Netmask/Getway/DNS Servers are recovered
00101   }
00102   else
00103   {
00104     netif_set_up(&m_lpcNetif); //Set interface up
00105   }
00106   
00107   m_netifStatusSphre.wait();
00108   
00109   DBG("Connected with IP %s", getIPAddress());
00110 
00111   return OK;
00112 }
00113 
00114 int EthernetInterface::disconnect()
00115 {
00116   m_netifStatusSphre.wait(0);
00117 
00118   if(m_useDHCP)
00119   {
00120     dhcp_release(&m_lpcNetif); //Release the lease & bring interface down
00121     dhcp_stop(&m_lpcNetif);
00122   }
00123   else
00124   {
00125     netif_set_down(&m_lpcNetif);  
00126   }
00127 
00128   DBG("Disable MAC interrupts");
00129   NVIC_DisableIRQ(ENET_IRQn);
00130   
00131   m_netifStatusSphre.wait();
00132 
00133   return OK;
00134 }
00135 
00136 /*static*/ void EthernetInterface::netifStatusCb(struct netif *netif)
00137 {
00138     EthernetInterface* pIf = (EthernetInterface*)( ((int32_t)netif) + ((int32_t)s_lpcNetifOff) ); //Bad kludge
00139     pIf->setIPAddress(inet_ntoa(netif->ip_addr));
00140     pIf->setConnected(netif_is_up(netif)?true:false);
00141     pIf->m_netifStatusSphre.wait(0); //Clear if pending
00142     pIf->m_netifStatusSphre.release();
00143 }
00144 
00145 /*static*/ int32_t EthernetInterface::s_lpcNetifOff = 0;