contiki/examples/sensinode/udp-ipv6/ping6.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 <stdio.h>
#if CONTIKI_TARGET_SENSINODE
#include "dev/sensinode-sensors.h"
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#include "debug.h"
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#endif
#define DEBUG DEBUG_NONE
#include "net/uip-debug.h"
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#define PING6_NB 5
#define PING6_DATALEN 16
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define UIP_ICMP_BUF ((struct uip_icmp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
static struct etimer ping6_periodic_timer;
static uint8_t count = 0;
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static uip_ipaddr_t dest_addr;
PROCESS(ping6_process, "PING6 process");
/*---------------------------------------------------------------------------*/
static void
ping6handler()
{
if(count < PING6_NB) {
UIP_IP_BUF->vtc = 0x60;
UIP_IP_BUF->tcflow = 1;
UIP_IP_BUF->flow = 0;
UIP_IP_BUF->proto = UIP_PROTO_ICMP6;
UIP_IP_BUF->ttl = uip_ds6_if.cur_hop_limit;
uip_ipaddr_copy(&UIP_IP_BUF->destipaddr, &dest_addr);
uip_ds6_select_src(&UIP_IP_BUF->srcipaddr, &UIP_IP_BUF->destipaddr);
UIP_ICMP_BUF->type = ICMP6_ECHO_REQUEST;
UIP_ICMP_BUF->icode = 0;
/* set identifier and sequence number to 0 */
memset((uint8_t *)UIP_ICMP_BUF + UIP_ICMPH_LEN, 0, 4);
/* put one byte of data */
memset((uint8_t *)UIP_ICMP_BUF + UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN,
count, PING6_DATALEN);
uip_len = UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN + UIP_IPH_LEN + PING6_DATALEN;
UIP_IP_BUF->len[0] = (uint8_t)((uip_len - 40) >> 8);
UIP_IP_BUF->len[1] = (uint8_t)((uip_len - 40) & 0x00FF);
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UIP_ICMP_BUF->icmpchksum = 0;
UIP_ICMP_BUF->icmpchksum = ~uip_icmp6chksum();
PRINTF("Echo Request to ");
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PRINT6ADDR(&UIP_IP_BUF->destipaddr);
PRINTF(" from ");
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PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
PRINTF("\n");
UIP_STAT(++uip_stat.icmp.sent);
tcpip_ipv6_output();
count++;
etimer_set(&ping6_periodic_timer, 3 * CLOCK_SECOND);
} else {
count = 0;
}
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(ping6_process, ev, data)
{
#if (CONTIKI_TARGET_SENSINODE && BUTTON_SENSOR_ON)
static struct sensors_sensor * btn;
#endif
PROCESS_BEGIN();
PRINTF("ping6 running.\n");
PRINTF("Button 1: 5 pings 16 byte payload.\n");
uip_ip6addr(&dest_addr,0x2001,0x470,0x55,0,0x0215,0x2000,0x0002,0x0302);
count = 0;
/* Check if we have buttons */
#if (CONTIKI_TARGET_SENSINODE && BUTTON_SENSOR_ON)
btn = sensors_find(BUTTON_1_SENSOR);
#endif
while(1) {
PROCESS_YIELD();
#if (CONTIKI_TARGET_SENSINODE && BUTTON_SENSOR_ON)
if(ev == sensors_event) {
if(data == btn && count == 0) {
ping6handler();
}
}
#endif
if(etimer_expired(&ping6_periodic_timer)) {
ping6handler();
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/