/* * 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. * * @(#)$Id: pinger.c,v 1.3 2010/10/19 18:29:05 adamdunkels Exp $ */ #include "contiki-esb.h" #include 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(uip_htons(d->seqno) != last_seqno + 1) { leds_toggle(LEDS_RED); beep_quick(2); }*/ /* last_seqno = uip_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 = uip_htons(uip_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 = uip_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) { 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); 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(UIP_HTONS(PORT), NULL); PT_INIT(&config_pt); 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(); } /*---------------------------------------------------------------------------*/