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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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105
examples/ipv6/simple-udp-rpl/unicast-sender.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 "node-id.h"
#include "simple-udp.h"
#include "servreg-hack.h"
#include <stdio.h>
#include <string.h>
#define UDP_PORT 1234
#define SERVICE_ID 190
#define SEND_INTERVAL (60 * CLOCK_SECOND)
#define SEND_TIME (random_rand() % (SEND_INTERVAL))
static struct simple_udp_connection unicast_connection;
/*---------------------------------------------------------------------------*/
PROCESS(unicast_sender_process, "Unicast sender example process");
AUTOSTART_PROCESSES(&unicast_sender_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);
}
/*---------------------------------------------------------------------------*/
static void
set_global_address(void)
{
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");
}
}
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(unicast_sender_process, ev, data)
{
static struct etimer periodic_timer;
static struct etimer send_timer;
PROCESS_BEGIN();
servreg_hack_init();
set_global_address();
simple_udp_register(&unicast_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;
addr = servreg_hack_lookup(SERVICE_ID);
if(addr != NULL) {
char buf[20];
printf("Sending unicast to ");
uip_debug_ipaddr_print(addr);
printf("\n");
sprintf(buf, "From %d", node_id);
simple_udp_sendto(&unicast_connection, buf, strlen(buf) + 1, addr);
} else {
printf("Service %d not found\n", SERVICE_ID);
}
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/