nes-proj/examples/cc2530dk/udp-ipv6/client.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 "contiki-lib.h"
#include "contiki-net.h"
#include <string.h>
#include "dev/leds.h"
#include "dev/button-sensor.h"
#include "debug.h"
#define DEBUG DEBUG_PRINT
#include "net/uip-debug.h"
#define SEND_INTERVAL 2 * CLOCK_SECOND
#define MAX_PAYLOAD_LEN 40
static char buf[MAX_PAYLOAD_LEN];
/* Our destinations and udp conns. One link-local and one global */
#define LOCAL_CONN_PORT 3001
static struct uip_udp_conn *l_conn;
#if UIP_CONF_ROUTER
#define GLOBAL_CONN_PORT 3002
static struct uip_udp_conn *g_conn;
#endif
/*---------------------------------------------------------------------------*/
PROCESS(udp_client_process, "UDP client process");
#if BUTTON_SENSOR_ON
PROCESS_NAME(ping6_process);
AUTOSTART_PROCESSES(&udp_client_process, &ping6_process);
#else
AUTOSTART_PROCESSES(&udp_client_process);
#endif
/*---------------------------------------------------------------------------*/
static void
tcpip_handler(void)
{
leds_on(LEDS_GREEN);
if(uip_newdata()) {
putstring("0x");
puthex(uip_datalen());
putstring(" bytes response=0x");
puthex((*(uint16_t *) uip_appdata) >> 8);
puthex((*(uint16_t *) uip_appdata) & 0xFF);
putchar('\n');
}
leds_off(LEDS_GREEN);
return;
}
/*---------------------------------------------------------------------------*/
static void
timeout_handler(void)
{
static int seq_id;
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struct uip_udp_conn *this_conn;
leds_on(LEDS_RED);
memset(buf, 0, MAX_PAYLOAD_LEN);
seq_id++;
/* evens / odds */
if(seq_id & 0x01) {
this_conn = l_conn;
} else {
this_conn = g_conn;
if(uip_ds6_get_global(ADDR_PREFERRED) == NULL) {
return;
}
}
PRINTF("Client to: ");
PRINT6ADDR(&this_conn->ripaddr);
memcpy(buf, &seq_id, sizeof(seq_id));
PRINTF(" Remote Port %u,", UIP_HTONS(this_conn->rport));
PRINTF(" (msg=0x%04x), %u bytes\n", *(uint16_t *) buf, sizeof(seq_id));
uip_udp_packet_send(this_conn, buf, sizeof(seq_id));
leds_off(LEDS_RED);
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(udp_client_process, ev, data)
{
static struct etimer et;
uip_ipaddr_t ipaddr;
PROCESS_BEGIN();
PRINTF("UDP client process started\n");
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uip_ip6addr(&ipaddr, 0xfe80, 0, 0, 0, 0x0215, 0x2000, 0x0002, 0x2145);
/* new connection with remote host */
l_conn = udp_new(&ipaddr, UIP_HTONS(3000), NULL);
if(!l_conn) {
PRINTF("udp_new l_conn error.\n");
}
udp_bind(l_conn, UIP_HTONS(LOCAL_CONN_PORT));
PRINTF("Link-Local connection with ");
PRINT6ADDR(&l_conn->ripaddr);
PRINTF(" local/remote port %u/%u\n",
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UIP_HTONS(l_conn->lport), UIP_HTONS(l_conn->rport));
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uip_ip6addr(&ipaddr, 0xaaaa, 0, 0, 0, 0x0215, 0x2000, 0x0002, 0x2145);
g_conn = udp_new(&ipaddr, UIP_HTONS(3000), NULL);
if(!g_conn) {
PRINTF("udp_new g_conn error.\n");
}
udp_bind(g_conn, UIP_HTONS(GLOBAL_CONN_PORT));
PRINTF("Global connection with ");
PRINT6ADDR(&g_conn->ripaddr);
PRINTF(" local/remote port %u/%u\n",
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UIP_HTONS(g_conn->lport), UIP_HTONS(g_conn->rport));
etimer_set(&et, SEND_INTERVAL);
while(1) {
PROCESS_YIELD();
if(etimer_expired(&et)) {
timeout_handler();
etimer_restart(&et);
} else if(ev == tcpip_event) {
tcpip_handler();
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/