contiki/examples/sensinode/sensors-ipv6/sensors-ipv6.c

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/*
* Copyright (c) 2010, Loughborough University - 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.
*/
/**
* \file
* Example to demonstrate-test the sensors functionality on
* sensinode/cc2430 devices.
*
* A UDP/IPv6 process waits for requests from a monitoring station
* and responds with sensor values.
*
* The message exchange is based on a custom protocol.
* Check sensors-driver.c for protocol details.
*
* \author
* George Oikonomou - <oikonomou@users.sourceforge.net>
*/
#include "contiki.h"
#include "contiki-lib.h"
#include "contiki-net.h"
#include <string.h>
#define DEBUG DEBUG_NONE
#include "net/ip/uip-debug.h"
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#include "dev/watchdog.h"
#include "dev/leds.h"
#include "net/rpl/rpl.h"
#include <stdio.h>
#if CONTIKI_TARGET_SENSINODE
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#include "debug.h"
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#include "dev/sensinode-sensors.h"
#else
#define putstring(s)
#endif
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define UIP_UDP_BUF ((struct uip_udp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
#define MAX_PAYLOAD_LEN 120
static struct uip_udp_conn *server_conn;
static char buf[MAX_PAYLOAD_LEN];
static uint16_t len;
#define SERVER_PORT 60000
#define SENSOR_OK 0
#define SENSOR_ADC_OFF 1
#define SENSOR_UNKNOWN 2
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int8_t read_sensor(char *rs);
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/*---------------------------------------------------------------------------*/
extern const struct sensors_sensor adc_sensor;
/*---------------------------------------------------------------------------*/
PROCESS(udp_server_process, "UDP server process");
AUTOSTART_PROCESSES(&udp_server_process);
/*---------------------------------------------------------------------------*/
static void
tcpip_handler(void)
{
memset(buf, 0, MAX_PAYLOAD_LEN);
if(uip_newdata()) {
len = uip_datalen();
memcpy(buf, uip_appdata, len);
PRINTF("%u bytes from [", len);
PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
PRINTF("]:%u\n", UIP_HTONS(UIP_UDP_BUF->srcport));
len = read_sensor(buf);
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if(len) {
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server_conn->rport = UIP_UDP_BUF->srcport;
uip_ipaddr_copy(&server_conn->ripaddr, &UIP_IP_BUF->srcipaddr);
uip_udp_packet_send(server_conn, buf, len);
PRINTF("Sent %u bytes\n", len);
}
/* Restore server connection to allow data from any node */
uip_create_unspecified(&server_conn->ripaddr);
server_conn->rport = 0;
}
return;
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(udp_server_process, ev, data)
{
#if (CONTIKI_TARGET_SENSINODE && BUTTON_SENSOR_ON)
static struct sensors_sensor *b1;
static struct sensors_sensor *b2;
#endif
PROCESS_BEGIN();
putstring("Starting UDP server\n");
#if (CONTIKI_TARGET_SENSINODE && BUTTON_SENSOR_ON)
putstring("Button X: Toggle LED X\n");
#endif
server_conn = udp_new(NULL, UIP_HTONS(0), NULL);
udp_bind(server_conn, UIP_HTONS(SERVER_PORT));
#if (CONTIKI_TARGET_SENSINODE && BUTTON_SENSOR_ON)
b1 = sensors_find(BUTTON_1_SENSOR);
b2 = sensors_find(BUTTON_2_SENSOR);
#endif
while(1) {
PROCESS_YIELD();
if(ev == tcpip_event) {
tcpip_handler();
#if (CONTIKI_TARGET_SENSINODE && BUTTON_SENSOR_ON)
} else if(ev == sensors_event && data != NULL) {
if(data == b1) {
leds_toggle(LEDS_GREEN);
} else if(data == b2) {
leds_toggle(LEDS_RED);
}
#endif /* (CONTIKI_TARGET_SENSINODE && BUTTON_SENSOR_ON) */
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/