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Example code for the simple UDP API

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This commit is contained in:
Adam Dunkels 2011-08-29 21:33:23 +02:00
parent 8faaaa2c83
commit b3f3163661
4 changed files with 289 additions and 0 deletions
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67
examples/ipv6/simple-udp-rpl/broadcast-example.c Normal file
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#include "contiki.h"
#include "lib/random.h"
#include "sys/ctimer.h"
#include "sys/etimer.h"
#include "net/uip.h"
#include "net/uip-ds6.h"
#include "simple-udp.h"
#include <stdio.h>
#include <string.h>
#define UDP_PORT 1234
#define SEND_INTERVAL (10 * CLOCK_SECOND)
#define SEND_TIME (random_rand() % (SEND_INTERVAL))
static struct simple_udp_connection broadcast_connection;
/*---------------------------------------------------------------------------*/
PROCESS(broadcast_example_process, "UDP broadcast example process");
AUTOSTART_PROCESSES(&broadcast_example_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(broadcast_example_process, ev, data)
{
static struct etimer periodic_timer;
static struct etimer send_timer;
PROCESS_BEGIN();
simple_udp_register(&broadcast_connection, UDP_PORT,
NULL, UDP_PORT,
receiver);
etimer_set(&periodic_timer, SEND_INTERVAL);
while(1) {
PROCESS_YIELD_UNTIL(ev == PROCESS_EVENT_TIMER);
if(data == &periodic_timer) {
etimer_reset(&periodic_timer);
etimer_set(&send_timer, SEND_TIME);
}
if(data == &send_timer) {
uip_ipaddr_t addr;
printf("Sending broadcast\n");
uip_create_linklocal_allnodes_mcast(&addr);
simple_udp_sendto(&broadcast_connection, "hej\n", 4, &addr);
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/