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 #define __DEBUG
00033 #include "dbg/dbg.h"
00034 
00035 #include "netCfg.h"
00036 #if NET_ETH
00037 
00038 EthernetNetIf::EthernetNetIf() : LwipNetIf(), m_ethArpTimer(), m_dhcpCoarseTimer(), m_dhcpFineTimer(), m_autoIpTimer(), m_pNetIf(NULL),
00039 m_netmask(255,255,255,255), m_gateway(), m_hostname(NULL)
00040 {
00041   m_hostname = NULL;
00042   m_pNetIf = new netif;
00043   m_useDhcp = true;
00044 }
00045 
00046 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
00047 {
00048   m_hostname = NULL;
00049   m_netmask = netmask;
00050   m_gateway = gateway;
00051   m_ip = ip;
00052   m_pNetIf = new netif;
00053   dns_setserver(0, &dns.getStruct());
00054   m_useDhcp = false;
00055 }
00056 
00057 EthernetNetIf::~EthernetNetIf()
00058 {
00059   if(m_pNetIf)
00060   {
00061     netif_set_down(m_pNetIf);
00062     netif_remove(m_pNetIf);
00063     delete m_pNetIf;
00064     eth_free();
00065   }
00066 }
00067   
00068 EthernetErr EthernetNetIf::setup(int timeout_ms /*= 15000*/)
00069 {
00070   LwipNetIf::init();
00071   //m_ethArpTicker.attach_us(&etharp_tmr,  ARP_TMR_INTERVAL  * 1000); // = 5s in etharp.h
00072   m_ethArpTimer.start();
00073   if(m_useDhcp)
00074   {
00075     //m_dhcpCoarseTicker.attach(&dhcp_coarse_tmr, DHCP_COARSE_TIMER_SECS); // = 60s in dhcp.h
00076     //m_dhcpFineTicker.attach_us(&dhcp_fine_tmr, DHCP_FINE_TIMER_MSECS * 1000); // = 500ms in dhcp.h
00077     m_dhcpCoarseTimer.start();
00078     m_dhcpFineTimer.start();
00079     m_autoIpTimer.start();
00080   }
00081   m_pNetIf->hwaddr_len = ETHARP_HWADDR_LEN; //6
00082   eth_address((char *)m_pNetIf->hwaddr);
00083   
00084   DBG("\r\nHW Addr is : %02x:%02x:%02x:%02x:%02x:%02x.\r\n", 
00085   m_pNetIf->hwaddr[0], m_pNetIf->hwaddr[1], m_pNetIf->hwaddr[2],
00086   m_pNetIf->hwaddr[3], m_pNetIf->hwaddr[4], m_pNetIf->hwaddr[5]);
00087 
00088   m_pNetIf = netif_add(m_pNetIf, &(m_ip.getStruct()), &(m_netmask.getStruct()), &(m_gateway.getStruct()), NULL, eth_init, ip_input);//ethernet_input);// ip_input);
00089   //m_pNetIf->hostname = "mbedDG";//(char *)m_hostname; //Not used for now
00090   netif_set_default(m_pNetIf);
00091   
00092   //DBG("\r\nStarting DHCP.\r\n");
00093   
00094   if(m_useDhcp)
00095   {
00096     dhcp_start(m_pNetIf);
00097     DBG("\r\nDHCP Started, waiting for IP...\r\n");
00098   }
00099   else
00100   {
00101     netif_set_up(m_pNetIf);
00102   }
00103   
00104   Timer timeout;
00105   timeout.start();
00106   while( !netif_is_up(m_pNetIf) ) //Wait until device is up
00107   {
00108     if(m_useDhcp)
00109     {
00110       if(m_dhcpFineTimer.read_ms()>=DHCP_FINE_TIMER_MSECS)
00111       {
00112         m_dhcpFineTimer.reset();
00113         dhcp_fine_tmr();
00114       }
00115       if(m_dhcpCoarseTimer.read()>=DHCP_COARSE_TIMER_SECS)
00116       {
00117         m_dhcpCoarseTimer.reset();
00118         dhcp_coarse_tmr();
00119       }
00120       if(m_autoIpTimer.read_ms()>=AUTOIP_TMR_INTERVAL)
00121       {
00122         m_autoIpTimer.reset();
00123         autoip_tmr();
00124       }
00125     }
00126     poll();
00127     if( timeout.read_ms() > timeout_ms )
00128     {
00129       //Abort
00130       if(m_useDhcp)
00131         dhcp_stop(m_pNetIf);
00132       else
00133         netif_set_down(m_pNetIf);
00134       DBG("\r\nTimeout.\r\n");
00135       return ETH_TIMEOUT;
00136     }
00137   }
00138   
00139   m_ip = IpAddr(&(m_pNetIf->ip_addr));
00140    
00141   DBG("\r\nConnected, IP : %d.%d.%d.%d\r\n", m_ip[0], m_ip[1], m_ip[2], m_ip[3]);
00142   
00143   return ETH_OK;
00144 }
00145 
00146 void EthernetNetIf::poll()
00147 {
00148   if(m_ethArpTimer.read_ms()>=ARP_TMR_INTERVAL)
00149   {
00150     m_ethArpTimer.reset();
00151     etharp_tmr();
00152   }
00153   LwipNetIf::poll();
00154   eth_poll();
00155 }
00156 
00157 #endif