contiki/platform/esb/apps/pinger.c

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/*
* Copyright (c) 2005, 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.
*
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* @(#)$Id: pinger.c,v 1.2 2010/01/15 10:37:04 nifi Exp $
*/
#include "contiki-esb.h"
#include <stdio.h>
PROCESS(pinger, "Pinger");
static struct uip_udp_conn *conn;
struct data {
u8_t dummy_data[20];
u16_t id;
u16_t seqno;
u8_t pingpong;
#define PING 0
#define PONG 1
};
static unsigned char pingeron;
static struct etimer etimer;
static unsigned short sent_seqno, last_seqno;
#define PORT 9145
static int place_id = 0, packet_count = 0;
/*---------------------------------------------------------------------------*/
static void
quit(void)
{
process_exit(&pinger);
LOADER_UNLOAD();
}
/*---------------------------------------------------------------------------*/
static void
udp_appcall(void *arg)
{
struct data *d;
/* char buf[50];*/
d = (struct data *)uip_appdata;
if(uip_newdata()) {
leds_toggle(LEDS_YELLOW);
/* beep();*/
/* if(htons(d->seqno) != last_seqno + 1) {
leds_toggle(LEDS_RED);
beep_quick(2);
}*/
/* last_seqno = htons(d->seqno);*/
/* uip_udp_send(sizeof(struct data));*/
/* snprintf(buf, sizeof(buf), "Packet received id %d signal %u\n",
d->id, tr1001_sstrength());
rs232_print(buf);*/
/* if(d->pingpong == PING) {
d->pingpong = PONG;
} else {
d->pingpong = PING;
d->seqno = htons(htons(d->seqno) + 1);
}*/
/* uip_udp_send(sizeof(struct data));
timer_restart(&timer);*/
} else if(uip_poll()) {
if(pingeron && etimer_expired(&etimer) && packet_count > 0) {
--packet_count;
d->id = place_id;
d->pingpong = PING;
d->seqno = htons(sent_seqno);
++sent_seqno;
uip_udp_send(sizeof(struct data));
etimer_reset(&etimer);
leds_toggle(LEDS_GREEN);
}
if(packet_count == 0) {
pingeron = 0;
}
}
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(config_thread(struct pt *pt, process_event_t ev, process_data_t data))
{
static struct etimer pushtimer;
static int counter;
PT_BEGIN(pt);
while(1) {
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PT_WAIT_UNTIL(pt, ev == sensors_event && data == &button_sensor);
beep();
leds_on(LEDS_YELLOW);
etimer_set(&pushtimer, CLOCK_SECOND);
for(counter = 0; !etimer_expired(&pushtimer); ++counter) {
etimer_restart(&pushtimer);
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PT_YIELD_UNTIL(pt, (ev == sensors_event && data == &button_sensor) ||
etimer_expired(&pushtimer));
}
place_id = counter;
beep_quick(place_id);
pingeron = 1;
packet_count = 20;
etimer_set(&etimer, CLOCK_SECOND / 2);
leds_off(LEDS_YELLOW);
leds_on(LEDS_RED);
PT_WAIT_UNTIL(pt, packet_count == 0);
pingeron = 0;
leds_off(LEDS_RED);
}
PT_END(pt);
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(pinger, ev, data)
{
static struct pt config_pt;
PROCESS_BEGIN();
pingeron = 0;
conn = udp_broadcast_new(HTONS(PORT), NULL);
PT_INIT(&config_pt);
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button_sensor.configure(SENSORS_ACTIVE, 1);
while(1) {
config_thread(&config_pt, ev, data);
PROCESS_WAIT_EVENT();
printf("Event %d\n", ev);
beep();
if(ev == tcpip_event) {
udp_appcall(data);
}
if(ev == PROCESS_EVENT_TIMER && etimer_expired(&etimer)) {
tcpip_poll_udp(conn);
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/