EthernetNetIf.cpp

00001 
00002 /*
00003 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
00004  
00005 Permission is hereby granted, free of charge, to any person obtaining a copy
00006 of this software and associated documentation files (the "Software"), to deal
00007 in the Software without restriction, including without limitation the rights
00008 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00009 copies of the Software, and to permit persons to whom the Software is
00010 furnished to do so, subject to the following conditions:
00011  
00012 The above copyright notice and this permission notice shall be included in
00013 all copies or substantial portions of the Software.
00014  
00015 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00018 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00019 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00020 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00021 THE SOFTWARE.
00022 */
00023 
00024 #include "EthernetNetIf.h"
00025 #include "netif/etharp.h"
00026 #include "lwip/dhcp.h "
00027 #include "lwip/dns.h"
00028 #include "ipv4/lwip/autoip.h"
00029 #include "drv/eth/eth_drv.h"
00030 #include "mbed.h"
00031 
00032 #include "dbg/dbg.h"
00033 
00034 #include "netCfg.h"
00035 #if NET_ETH
00036 
00037 EthernetNetIf::EthernetNetIf() : LwipNetIf(), m_ethArpTimer(), m_dhcpCoarseTimer(), m_dhcpFineTimer(), m_autoIpTimer(), m_pNetIf(NULL),
00038 m_netmask(255,255,255,255), m_gateway(), m_hostname(NULL)
00039 {
00040   m_hostname = NULL;
00041   m_pNetIf = new netif;
00042   m_useDhcp = true;
00043 }
00044 
00045 EthernetNetIf::EthernetNetIf(IpAddr ip, IpAddr netmask, IpAddr gateway, IpAddr dns) : LwipNetIf(), m_ethArpTimer(), m_dhcpCoarseTimer(), m_dhcpFineTimer(), m_autoIpTimer(), m_pNetIf(NULL), m_hostname(NULL) //W/o DHCP
00046 {
00047   m_hostname = NULL;
00048   m_netmask = netmask;
00049   m_gateway = gateway;
00050   m_ip = ip;
00051   m_pNetIf = new netif;
00052   dns_setserver(0, &dns.getStruct());
00053   m_useDhcp = false;
00054 }
00055 
00056 EthernetNetIf::~EthernetNetIf()
00057 {
00058   if(m_pNetIf)
00059   {
00060     netif_set_down(m_pNetIf);
00061     netif_remove(m_pNetIf);
00062     delete m_pNetIf;
00063     eth_free();
00064   }
00065 }
00066   
00067 EthernetErr EthernetNetIf::setup(int timeout_ms /*= 15000*/)
00068 {
00069   LwipNetIf::init();
00070   //m_ethArpTicker.attach_us(&etharp_tmr,  ARP_TMR_INTERVAL  * 1000); // = 5s in etharp.h
00071   m_ethArpTimer.start();
00072   if(m_useDhcp)
00073   {
00074     //m_dhcpCoarseTicker.attach(&dhcp_coarse_tmr, DHCP_COARSE_TIMER_SECS); // = 60s in dhcp.h
00075     //m_dhcpFineTicker.attach_us(&dhcp_fine_tmr, DHCP_FINE_TIMER_MSECS * 1000); // = 500ms in dhcp.h
00076     m_dhcpCoarseTimer.start();
00077     m_dhcpFineTimer.start();
00078     m_autoIpTimer.start();
00079   }
00080   m_pNetIf->hwaddr_len = ETHARP_HWADDR_LEN; //6
00081   eth_address((char *)m_pNetIf->hwaddr);
00082   
00083   DBG("\r\nHW Addr is : %02x:%02x:%02x:%02x:%02x:%02x.\r\n", 
00084   m_pNetIf->hwaddr[0], m_pNetIf->hwaddr[1], m_pNetIf->hwaddr[2],
00085   m_pNetIf->hwaddr[3], m_pNetIf->hwaddr[4], m_pNetIf->hwaddr[5]);
00086 
00087   m_pNetIf = netif_add(m_pNetIf, &(m_ip.getStruct()), &(m_netmask.getStruct()), &(m_gateway.getStruct()), NULL, eth_init, ip_input);//ethernet_input);// ip_input);
00088   //m_pNetIf->hostname = "mbedDG";//(char *)m_hostname; //Not used for now
00089   netif_set_default(m_pNetIf);
00090   
00091   //DBG("\r\nStarting DHCP.\r\n");
00092   
00093   if(m_useDhcp)
00094   {
00095     dhcp_start(m_pNetIf);
00096     DBG("\r\nDHCP Started, waiting for IP...\r\n");
00097   }
00098   else
00099   {
00100     netif_set_up(m_pNetIf);
00101   }
00102   
00103   Timer timeout;
00104   timeout.start();
00105   while( !netif_is_up(m_pNetIf) ) //Wait until device is up
00106   {
00107     if(m_useDhcp)
00108     {
00109       if(m_dhcpFineTimer.read_ms()>=DHCP_FINE_TIMER_MSECS)
00110       {
00111         m_dhcpFineTimer.reset();
00112         dhcp_fine_tmr();
00113       }
00114       if(m_dhcpCoarseTimer.read()>=DHCP_COARSE_TIMER_SECS)
00115       {
00116         m_dhcpCoarseTimer.reset();
00117         dhcp_coarse_tmr();
00118       }
00119       if(m_autoIpTimer.read_ms()>=AUTOIP_TMR_INTERVAL)
00120       {
00121         m_autoIpTimer.reset();
00122         autoip_tmr();
00123       }
00124     }
00125     poll();
00126     if( timeout.read_ms() > timeout_ms )
00127     {
00128       //Abort
00129       if(m_useDhcp)
00130         dhcp_stop(m_pNetIf);
00131       else
00132         netif_set_down(m_pNetIf);
00133       DBG("\r\nTimeout.\r\n");
00134       return ETH_TIMEOUT;
00135     }
00136   }
00137   
00138   m_ip = IpAddr(&(m_pNetIf->ip_addr));
00139    
00140   DBG("\r\nConnected, IP : %d.%d.%d.%d\r\n", m_ip[0], m_ip[1], m_ip[2], m_ip[3]);
00141   
00142   return ETH_OK;
00143 }
00144 
00145 void EthernetNetIf::poll()
00146 {
00147   if(m_ethArpTimer.read_ms()>=ARP_TMR_INTERVAL)
00148   {
00149     m_ethArpTimer.reset();
00150     etharp_tmr();
00151   }
00152   LwipNetIf::poll();
00153   eth_poll();
00154 }
00155 
00156 #endif