nes-proj/tests/07-simulation-base/code-ipv6/sender/unicast-sender.c

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#include "contiki.h"
#include "contiki-lib.h"
#include "contiki-net.h"
#include "rpl.h"
#include "rpl-dag-root.h"
#include <stdio.h>
#define UDP_PORT 61618
#define SEND_INTERVAL (4 * CLOCK_SECOND)
static struct simple_udp_connection broadcast_connection;
#ifndef SIZE
#define SIZE 100
#endif
/*---------------------------------------------------------------------------*/
PROCESS(udp_process, "UDP broadcast process");
AUTOSTART_PROCESSES(&udp_process);
/*---------------------------------------------------------------------------*/
static void
receiver(struct simple_udp_connection *c,
const uip_ipaddr_t *sender_addr,
uint16_t sender_port,
const uip_ipaddr_t *receiver_addr,
uint16_t receiver_port,
const uint8_t *data,
uint16_t datalen)
{
printf("Data received on port %d from port %d with length %d\n",
receiver_port, sender_port, datalen);
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(udp_process, ev, data)
{
static struct etimer periodic_timer;
static struct etimer send_timer;
uip_ipaddr_t addr;
PROCESS_BEGIN();
rpl_dag_root_init_dag_immediately();
simple_udp_register(&broadcast_connection, UDP_PORT,
NULL, UDP_PORT,
receiver);
etimer_set(&periodic_timer, 20 * CLOCK_SECOND);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&periodic_timer));
etimer_set(&periodic_timer, SEND_INTERVAL);
while(1) {
uint8_t buf[SIZE];
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&periodic_timer));
etimer_reset(&periodic_timer);
printf("Sending unicast\n");
uip_ip6addr(&addr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0, 0, 0, 2);
simple_udp_sendto(&broadcast_connection, buf, sizeof(buf), &addr);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/