156 lines
4.7 KiB
C
156 lines
4.7 KiB
C
/*
|
|
* Copyright (c) 2006, 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.
|
|
*
|
|
* $Id: radio-test.c,v 1.3 2010/10/19 18:29:05 adamdunkels Exp $
|
|
*
|
|
* -----------------------------------------------------------------
|
|
*
|
|
* Author : Adam Dunkels, Joakim Eriksson, Niclas Finne
|
|
* Created : 2006-03-07
|
|
* Updated : $Date: 2010/10/19 18:29:05 $
|
|
* $Revision: 1.3 $
|
|
*
|
|
* Simple application to indicate connectivity between two nodes:
|
|
*
|
|
* - Red led indicates a packet sent via radio (one packet sent each second)
|
|
* - Yellow led indicates that this node can hear the other node but not
|
|
* necessary vice versa (unidirectional communication).
|
|
* - Green led indicates that both nodes can communicate with each
|
|
* other (bidirectional communication)
|
|
*/
|
|
|
|
#include "contiki-esb.h"
|
|
#include <string.h>
|
|
|
|
PROCESS(radio_test_process, "Radio test");
|
|
AUTOSTART_PROCESSES(&radio_test_process);
|
|
|
|
#define ON 1
|
|
#define OFF 0
|
|
|
|
#define HEADER "RTST"
|
|
#define PACKET_SIZE 20
|
|
#define PORT 2345
|
|
|
|
struct indicator {
|
|
int onoff;
|
|
int led;
|
|
clock_time_t interval;
|
|
struct etimer timer;
|
|
};
|
|
|
|
/*---------------------------------------------------------------------*/
|
|
static void
|
|
set(struct indicator *indicator, int onoff) {
|
|
if(indicator->onoff ^ onoff) {
|
|
indicator->onoff = onoff;
|
|
if(onoff) {
|
|
leds_on(indicator->led);
|
|
} else {
|
|
leds_off(indicator->led);
|
|
}
|
|
}
|
|
if(onoff) {
|
|
etimer_set(&indicator->timer, indicator->interval);
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------*/
|
|
PROCESS_THREAD(radio_test_process, ev, data)
|
|
{
|
|
static struct etimer send_timer;
|
|
static struct uip_udp_conn *conn;
|
|
static struct indicator recv, other, flash;
|
|
|
|
PROCESS_BEGIN();
|
|
|
|
/* Initialize the indicators */
|
|
recv.onoff = other.onoff = flash.onoff = OFF;
|
|
recv.interval = other.interval = CLOCK_SECOND;
|
|
flash.interval = 1;
|
|
recv.led = LEDS_YELLOW;
|
|
other.led = LEDS_GREEN;
|
|
flash.led = LEDS_RED;
|
|
|
|
conn = udp_broadcast_new(UIP_HTONS(PORT), NULL);
|
|
etimer_set(&send_timer, CLOCK_SECOND);
|
|
|
|
while(1) {
|
|
PROCESS_WAIT_EVENT();
|
|
|
|
if(ev == PROCESS_EVENT_TIMER) {
|
|
if(data == &send_timer) {
|
|
etimer_reset(&send_timer);
|
|
tcpip_poll_udp(conn);
|
|
|
|
} else if(data == &other.timer) {
|
|
set(&other, OFF);
|
|
|
|
} else if(data == &recv.timer) {
|
|
set(&recv, OFF);
|
|
|
|
} else if(data == &flash.timer) {
|
|
set(&flash, OFF);
|
|
}
|
|
|
|
} else if(ev == tcpip_event) {
|
|
|
|
if(uip_poll()) {
|
|
/* send packet */
|
|
memcpy(uip_appdata, HEADER, sizeof(HEADER));
|
|
((char *)uip_appdata)[sizeof(HEADER)] = recv.onoff;
|
|
/* send arbitrary data to fill the packet size */
|
|
uip_send(uip_appdata, PACKET_SIZE);
|
|
|
|
set(&flash, ON);
|
|
}
|
|
|
|
if(uip_newdata()) {
|
|
/* packet received */
|
|
if(uip_datalen() < PACKET_SIZE
|
|
|| strncmp((char *)uip_appdata, HEADER, sizeof(HEADER))) {
|
|
/* invalid message */
|
|
leds_blink();
|
|
|
|
} else {
|
|
set(&recv, ON);
|
|
set(&other, ((char *)uip_appdata)[sizeof(HEADER)] ? ON : OFF);
|
|
|
|
/* synchronize the sending to keep the nodes from sending
|
|
simultaneously */
|
|
etimer_set(&send_timer, CLOCK_SECOND);
|
|
etimer_adjust(&send_timer, - (int) (CLOCK_SECOND >> 1));
|
|
|
|
beep();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
PROCESS_END();
|
|
}
|
|
/*---------------------------------------------------------------------*/
|