2017-06-10 12:35:39 +00:00
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/*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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#include "contiki.h"
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#include "lib/random.h"
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#include "sys/ctimer.h"
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#include "net/ip/uip.h"
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#include "net/ipv6/uip-ds6.h"
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#include "net/ip/uip-udp-packet.h"
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#include "rpl.h"
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#include "rpl-dag-root.h"
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#include "node-id.h"
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#include "simple-udp.h"
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#include "sys/ctimer.h"
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#include <stdio.h>
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#include <string.h>
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#include "dev/serial-line.h"
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#include "net/ipv6/uip-ds6-route.h"
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2017-06-23 19:12:36 +00:00
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/* Log configuration */
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#include "sys/log.h"
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#define LOG_MODULE "App"
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#define LOG_LEVEL LOG_LEVEL_INFO
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2017-06-10 12:35:39 +00:00
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#define UDP_PORT 8765
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#define START_INTERVAL (15 * CLOCK_SECOND)
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#define SEND_INTERVAL (60 * CLOCK_SECOND)
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static struct simple_udp_connection udp_conn;
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static uip_ipaddr_t node_ipaddr;
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static uip_ipaddr_t root_ipaddr;
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static uip_ipaddr_t destination_ipaddr;
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/*---------------------------------------------------------------------------*/
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PROCESS(node_process, "RPL Simple Process");
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AUTOSTART_PROCESSES(&node_process);
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/*---------------------------------------------------------------------------*/
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static void
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receiver(struct simple_udp_connection *c,
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const uip_ipaddr_t *sender_addr,
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uint16_t sender_port,
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const uip_ipaddr_t *receiver_addr,
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uint16_t receiver_port,
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const uint8_t *data,
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uint16_t datalen)
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{
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2017-06-23 19:12:36 +00:00
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unsigned seq_id;
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2017-06-10 12:35:39 +00:00
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memcpy(&seq_id, data, sizeof(int));
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if(uip_ip6addr_cmp(&destination_ipaddr, &node_ipaddr)) {
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2017-06-23 19:12:36 +00:00
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LOG_INFO("received request %u from ", seq_id);
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LOG_INFO_6ADDR(sender_addr);
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LOG_INFO_("\n");
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LOG_INFO("sending reply %u to ", seq_id);
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LOG_INFO_6ADDR(sender_addr);
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LOG_INFO_("\n");
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2017-06-10 12:35:39 +00:00
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simple_udp_sendto(&udp_conn, &seq_id, sizeof(seq_id), sender_addr);
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} else {
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2017-06-23 19:12:36 +00:00
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static unsigned reply_count = 0;
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reply_count++;
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LOG_INFO("received reply %u (%u/%u) from ", seq_id, reply_count, seq_id);
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LOG_INFO_6ADDR(sender_addr);
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LOG_INFO_("\n");
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2017-06-10 12:35:39 +00:00
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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send_packet(void *ptr)
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{
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2017-06-23 19:12:36 +00:00
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if(rpl_is_reachable()) {
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static unsigned seq_id = 0;
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LOG_INFO("sending request %u to ", ++seq_id);
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LOG_INFO_6ADDR(&destination_ipaddr);
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LOG_INFO_("\n");
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2017-06-10 12:35:39 +00:00
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simple_udp_sendto(&udp_conn, &seq_id, sizeof(seq_id), &destination_ipaddr);
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} else {
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2017-06-23 19:12:36 +00:00
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LOG_INFO("not connected yet\n");
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2017-06-10 12:35:39 +00:00
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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get_global_address(void)
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{
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int i;
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uint8_t state;
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for(i = 0; i < UIP_DS6_ADDR_NB; i++) {
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state = uip_ds6_if.addr_list[i].state;
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if(uip_ds6_if.addr_list[i].isused &&
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state == ADDR_PREFERRED &&
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!uip_is_addr_linklocal(&uip_ds6_if.addr_list[i].ipaddr)) {
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uip_ip6addr_copy(&node_ipaddr, &uip_ds6_if.addr_list[i].ipaddr);
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(node_process, ev, data)
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{
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static struct etimer periodic;
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static struct ctimer backoff_timer;
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PROCESS_BEGIN();
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/* Hardcoded IPv6 addresses */
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uip_ip6addr(&root_ipaddr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0x0212, 0x7401, 0x0001, 0x0101);
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uip_ip6addr(&destination_ipaddr, UIP_DS6_DEFAULT_PREFIX, 0, 0, 0, 0x0212, 0x7401, 0x0001, 0x0101);
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rpl_dag_root_init(NULL, NULL);
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get_global_address();
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/* Configure root */
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if(uip_ip6addr_cmp(&root_ipaddr, &node_ipaddr)) {
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rpl_dag_root_init_dag_immediately();
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}
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/* New connection with remote host */
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simple_udp_register(&udp_conn, UDP_PORT, NULL, UDP_PORT, receiver);
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/* Wait for START_INTERVAL */
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etimer_set(&periodic, START_INTERVAL);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&periodic));
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if(!uip_ip6addr_cmp(&destination_ipaddr, &node_ipaddr)) {
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/* Send data periodically */
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etimer_set(&periodic, SEND_INTERVAL);
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while(1) {
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PROCESS_YIELD();
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if(etimer_expired(&periodic)) {
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etimer_reset(&periodic);
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ctimer_set(&backoff_timer, random_rand() % (SEND_INTERVAL), send_packet, NULL);
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}
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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