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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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108
examples/ipv6/simple-udp-rpl/unicast-receiver.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 "net/uip-debug.h"
#include "simple-udp.h"
#include "servreg-hack.h"
#include "net/rpl/rpl.h"
#include <stdio.h>
#include <string.h>
#define UDP_PORT 1234
#define SERVICE_ID 190
#define SEND_INTERVAL (10 * CLOCK_SECOND)
#define SEND_TIME (random_rand() % (SEND_INTERVAL))
static struct simple_udp_connection unicast_connection;
/*---------------------------------------------------------------------------*/
PROCESS(unicast_receiver_process, "Unicast receiver example process");
AUTOSTART_PROCESSES(&unicast_receiver_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: '%s'\n",
receiver_port, sender_port, datalen, data);
}
/*---------------------------------------------------------------------------*/
static uip_ipaddr_t *
set_global_address(void)
{
static uip_ipaddr_t ipaddr;
int i;
uint8_t state;
uip_ip6addr(&ipaddr, 0xaaaa, 0, 0, 0, 0, 0, 0, 0);
uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
printf("IPv6 addresses: ");
for(i = 0; i < UIP_DS6_ADDR_NB; i++) {
state = uip_ds6_if.addr_list[i].state;
if(uip_ds6_if.addr_list[i].isused &&
(state == ADDR_TENTATIVE || state == ADDR_PREFERRED)) {
uip_debug_ipaddr_print(&uip_ds6_if.addr_list[i].ipaddr);
printf("\n");
}
}
return &ipaddr;
}
/*---------------------------------------------------------------------------*/
static void
create_rpl_dag(uip_ipaddr_t *ipaddr)
{
struct uip_ds6_addr *root_if;
root_if = uip_ds6_addr_lookup(ipaddr);
if(root_if != NULL) {
rpl_dag_t *dag;
uip_ipaddr_t prefix;
rpl_set_root(ipaddr);
dag = rpl_get_dag(RPL_ANY_INSTANCE);
uip_ip6addr(&prefix, 0xaaaa, 0, 0, 0, 0, 0, 0, 0);
rpl_set_prefix(dag, &prefix, 64);
PRINTF("created a new RPL dag\n");
} else {
PRINTF("failed to create a new RPL DAG\n");
}
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(unicast_receiver_process, ev, data)
{
uip_ipaddr_t *ipaddr;
PROCESS_BEGIN();
servreg_hack_init();
ipaddr = set_global_address();
create_rpl_dag(ipaddr);
servreg_hack_register(SERVICE_ID, ipaddr);
simple_udp_register(&unicast_connection, UDP_PORT,
NULL, UDP_PORT, receiver);
while(1) {
PROCESS_WAIT_EVENT();
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/