nes-proj/apps/shell/shell-rime-ping.c

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/*
* Copyright (c) 2008, Swedish Institute of Computer Science.
* All rights reserved.
*
* 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.
*
* $Id: shell-rime-ping.c,v 1.2 2008/02/24 20:33:38 adamdunkels Exp $
*/
/**
* \file
* The Contiki shell Rime ping application
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "shell.h"
#include "net/rime.h"
#include <stdio.h>
#ifndef HAVE_SNPRINTF
int snprintf(char *str, size_t size, const char *format, ...);
#endif /* HAVE_SNPRINTF */
struct ping_msg {
rtimer_clock_t pingtime;
rtimer_clock_t pongtime;
};
static struct mesh_conn mesh;
static int waiting_for_pong = 0;
/*---------------------------------------------------------------------------*/
PROCESS(shell_ping_process, "ping");
SHELL_COMMAND(ping_command,
"ping",
"ping <node addr>: send a message to a specific node and get a reply",
&shell_ping_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_ping_process, ev, data)
{
static int i;
static struct etimer timeout, periodic;
static rimeaddr_t receiver;
struct ping_msg *ping;
const char *nextptr;
char buf[32];
PROCESS_BEGIN();
receiver.u8[0] = shell_strtolong(data, &nextptr);
if(nextptr == data || *nextptr != '.') {
shell_output_str(&ping_command,
"ping <receiver>: recevier must be specified", "");
PROCESS_EXIT();
}
++nextptr;
receiver.u8[1] = shell_strtolong(nextptr, &nextptr);
snprintf(buf, sizeof(buf), "%d.%d", receiver.u8[0], receiver.u8[1]);
shell_output_str(&ping_command, "Sending 4 pings to ", buf);
for(i = 0; i < 4; ++i) {
rimebuf_clear();
ping = rimebuf_dataptr();
rimebuf_set_datalen(sizeof(struct ping_msg));
#if TIMESYNCH_CONF_ENABLED
ping->pingtime = timesynch_time();
#else
ping->pingtime = rtimer_arch_now();
#endif
mesh_send(&mesh, &receiver);
etimer_set(&timeout, CLOCK_SECOND * 8);
etimer_set(&periodic, CLOCK_SECOND * 1);
waiting_for_pong = 1;
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&timeout) ||
waiting_for_pong == 0);
if(waiting_for_pong == 0) {
PROCESS_WAIT_UNTIL(etimer_expired(&periodic));
} else {
shell_output_str(&ping_command,
"Timed out", "");
}
waiting_for_pong = 0;
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
static void
timedout_mesh(struct mesh_conn *c)
{
/* printf("packet timedout\n");*/
}
static void
recv_mesh(struct mesh_conn *c, rimeaddr_t *from, u8_t hops)
{
struct ping_msg *ping;
char buf[64];
rtimer_clock_t pingrecvtime;
ping = rimebuf_dataptr();
if(waiting_for_pong == 0) {
#if TIMESYNCH_CONF_ENABLED
ping->pongtime = timesynch_time();
#else
ping->pongtime = ping->pingtime;
#endif
mesh_send(&mesh, from);
} else {
#if TIMESYNCH_CONF_ENABLED
pingrecvtime = timesynch_time();
#else
pingrecvtime = rtimer_arch_now();
#endif
snprintf(buf, sizeof(buf), "%lu ms (%lu + %lu), %d hops.",
(1000L * (pingrecvtime - ping->pingtime)) / RTIMER_ARCH_SECOND,
(1000L * (ping->pongtime - ping->pingtime)) / RTIMER_ARCH_SECOND,
(1000L * (pingrecvtime - ping->pongtime)) / RTIMER_ARCH_SECOND,
hops);
shell_output_str(&ping_command,
"Pong recived; rtt ", buf);
waiting_for_pong = 0;
process_post(&shell_ping_process, PROCESS_EVENT_CONTINUE, NULL);
}
}
const static struct mesh_callbacks mesh_callbacks = { recv_mesh,
NULL,
timedout_mesh };
/*---------------------------------------------------------------------------*/
void
shell_rime_ping_init(void)
{
mesh_open(&mesh, 19, &mesh_callbacks);
shell_register_command(&ping_command);
}
/*---------------------------------------------------------------------------*/