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Ethernet cable insertion detection

Tamir Michael

Hello,

I need to make sure that my LPC2478 will configure its DHCP only after the physical insertion of the Ethernet cable into the controller (it seems that TCPNet cannot handle a situation where a DHCP enabled controller is startup without a network connection, thus the need to configure TCPNet again or for the firs time once the cable is inserted. Note: of the controller already got an IP address, then had his cable disconnected, there is no problem). It seems that simple interrupt detection won't do the job. Any ideas?

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  • 0 in reply to Tamir Michael

    I use the word timeslot to describe a function that is called repeatedly from a supervisory loop.

    My TCPnet supervisory loop is similar to the following:

    static TASK void TaskTcpPoll(void)
{
  for (;;)
  {
      ETHERNET_Timeslot();     // Maintain the Ethernet link

      main_TcpNet();           // Maintains the TCP

      TCPCLIENT_Timeslot();    // Maintain the TCP client(s)

      TCPSERVER_Timeslot();    // Maintain the TCP server(s)

      UDPSERVER_Timeslot();    // Maintain the UDP server(s)
    }

    os_dly_wait(1);            // Wait a while
  }
}

Reply
  • 0 in reply to Tamir Michael

    I use the word timeslot to describe a function that is called repeatedly from a supervisory loop.

    My TCPnet supervisory loop is similar to the following:

    static TASK void TaskTcpPoll(void)
{
  for (;;)
  {
      ETHERNET_Timeslot();     // Maintain the Ethernet link

      main_TcpNet();           // Maintains the TCP

      TCPCLIENT_Timeslot();    // Maintain the TCP client(s)

      TCPSERVER_Timeslot();    // Maintain the TCP server(s)

      UDPSERVER_Timeslot();    // Maintain the UDP server(s)
    }

    os_dly_wait(1);            // Wait a while
  }
}

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