contiki/examples/jn516x/rpl/border-router/border-router.c

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/*
* 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.
*
*/
#include "contiki.h"
#include "dev/slip.h"
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#include "net/rpl/rpl.h"
#include "tools/rpl-tools.h"
#define DEBUG DEBUG_PRINT
#include "net/ip/uip-debug.h"
static uip_ipaddr_t prefix;
static uint8_t prefix_set;
PROCESS(border_router_process, "Border router process");
AUTOSTART_PROCESSES(&border_router_process);
/*---------------------------------------------------------------------------*/
void
request_prefix(void)
{
/* mess up uip_buf with a dirty request... */
uip_buf[0] = '?';
uip_buf[1] = 'P';
/* uip_buf[2] = '\n'; */
uip_len = 2;
slip_send();
uip_len = 0;
}
/*---------------------------------------------------------------------------*/
void
set_prefix_64(uip_ipaddr_t *prefix_64)
{
memcpy(&prefix, prefix_64, 16);
prefix_set = 1;
}
/*---------------------------------------------------------------------------*/
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;
PROCESS_PAUSE();
PRINTF("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));
PRINTF("Waiting for prefix\n");
}
PRINTF("Obtained prefix: ");
uip_debug_ipaddr_print(&prefix);
PRINTF("\n");
rpl_tools_init(&prefix);
/* Print out routing tables every minute */
etimer_set(&et, CLOCK_SECOND * 60);
while(1) {
print_network_status();
PROCESS_YIELD_UNTIL(etimer_expired(&et));
etimer_reset(&et);
}
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PROCESS_END();
}
/*---------------------------------------------------------------------------*/