text: /*
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. Neither the name of the Institute nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   * This file is part of the Contiki operating system.
   *
   */
  /**
   * \file
   *         border-router
   * \author
   *         Niclas Finne <nfi@sics.se>
   *         Joakim Eriksson <joakime@sics.se>
   *         Nicolas Tsiftes <nvt@sics.se>
   */
  
  #include "contiki.h"
  #include "rpl.h"
  #include "dev/button-sensor.h"
  #include "dev/slip.h"
  #include "border-router-common.h"
  
  /*---------------------------------------------------------------------------*/
  /* Log configuration */
  #include "sys/log.h"
  #define LOG_MODULE "BR"
  #define LOG_LEVEL LOG_LEVEL_INFO
  
  void request_prefix(void);
  
  /*---------------------------------------------------------------------------*/
  PROCESS(border_router_process, "Border router process");
  /*---------------------------------------------------------------------------*/
  PROCESS_THREAD(border_router_process, ev, data)
  {
    static struct etimer et;
  
    PROCESS_BEGIN();
  
  /* While waiting for the prefix to be sent through the SLIP connection, the future
   * border router can join an existing DAG as a parent or child, or acquire a default
   * router that will later take precedence over the SLIP fallback interface.
   * Prevent that by turning the radio off until we are initialized as a DAG root.
   */
    prefix_set = 0;
    NETSTACK_MAC.off();
  
    PROCESS_PAUSE();
  
    SENSORS_ACTIVATE(button_sensor);
  
    LOG_INFO("RPL-Border router started\n");
  
    /* Request prefix until it has been received */
    while(!prefix_set) {
      etimer_set(&et, CLOCK_SECOND);
      request_prefix();
      PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
      LOG_INFO("Waiting for prefix\n");
    }
  
    NETSTACK_MAC.on();
  
    print_local_addresses();
  
    while(1) {
      PROCESS_YIELD();
      if(ev == sensors_event && data == &button_sensor) {
        LOG_INFO("Initiating global repair\n");
  #if UIP_CONF_IPV6_RPL_LITE
        rpl_global_repair();
  #else
        rpl_repair_root(RPL_DEFAULT_INSTANCE);
  #endif
      }
    }
  
    PROCESS_END();
  }
  /*---------------------------------------------------------------------------*/
  