dhcp_disable

#include <rtl.h>

void dhcp_disable (void)

The dhcp_disable function permanently disables the Dynamic Host Configuration at runtime. To enable the DHCP client again, you must restart the system.

With RLARM v4.11 and newer, it is possible to restart a DHCP client. First, the client must be disabled with dhcp_disable function and then re-enabled with the function dhcp_init.

The function is in the RL-TCPnet library. The prototype is defined in rtl.h.

Note

• You can use the function only when the DHCP Client is already enabled in the net_config.c configuration file.
• The function dhcp_init replaces the function init_dhcp from older versions of RL-ARM.

None

dhcp_cbfunc

#include <rtl.h>

void main (void) {
  /* Main Thread of the TcpNet */

  init_TcpNet ();

  if (DHCP_mode == 0) {
    dhcp_disable ();
  }

  while (1) {
    timer_poll ();
    main_TcpNet ();
  }
}

Procedure to restart DHCP client:

void dhcp_restart (void) {

  dhcp_disable ();
  dhcp_init ();           // init_dhcp() in older versions
}