154 lines
5 KiB
C
154 lines
5 KiB
C
/*
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* Copyright (c) 2010, Loughborough University - Computer Science
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*/
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/**
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* \file
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* Example to demonstrate-test the sensors functionality on
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* sensinode/cc2430 devices.
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*
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* A UDP/IPv6 process waits for requests from a monitoring station
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* and responds with sensor values.
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*
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* The message exchange is based on a custom protocol.
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* Check sensors-driver.c for protocol details.
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*
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* \author
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* George Oikonomou - <oikonomou@users.sourceforge.net>
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*/
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#include "contiki.h"
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#include "contiki-lib.h"
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#include "contiki-net.h"
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#include <string.h>
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#define DEBUG DEBUG_NONE
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#include "net/uip-debug.h"
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#include "dev/watchdog.h"
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#include "dev/leds.h"
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#include "net/rpl/rpl.h"
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#include <stdio.h>
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#if CONTIKI_TARGET_SENSINODE
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#include "debug.h"
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#include "dev/sensinode-sensors.h"
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#else
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#define putstring(s)
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#endif
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#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
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#define UIP_UDP_BUF ((struct uip_udp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
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#define MAX_PAYLOAD_LEN 120
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static struct uip_udp_conn *server_conn;
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static char buf[MAX_PAYLOAD_LEN];
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static uint16_t len;
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#define SERVER_PORT 60000
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#define SENSOR_OK 0
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#define SENSOR_ADC_OFF 1
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#define SENSOR_UNKNOWN 2
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int8_t read_sensor(char * rs);
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/*---------------------------------------------------------------------------*/
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extern const struct sensors_sensor adc_sensor;
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/*---------------------------------------------------------------------------*/
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PROCESS(udp_server_process, "UDP server process");
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AUTOSTART_PROCESSES(&udp_server_process);
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/*---------------------------------------------------------------------------*/
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static void
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tcpip_handler(void)
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{
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memset(buf, 0, MAX_PAYLOAD_LEN);
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if(uip_newdata()) {
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len = uip_datalen();
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memcpy(buf, uip_appdata, len);
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PRINTF("%u bytes from [", len);
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PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
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PRINTF("]:%u\n", UIP_HTONS(UIP_UDP_BUF->srcport));
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len = read_sensor(buf);
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if( len ) {
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server_conn->rport = UIP_UDP_BUF->srcport;
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uip_ipaddr_copy(&server_conn->ripaddr, &UIP_IP_BUF->srcipaddr);
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uip_udp_packet_send(server_conn, buf, len);
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PRINTF("Sent %u bytes\n", len);
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}
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/* Restore server connection to allow data from any node */
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uip_create_unspecified(&server_conn->ripaddr);
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server_conn->rport = 0;
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}
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return;
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(udp_server_process, ev, data)
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{
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#if (CONTIKI_TARGET_SENSINODE && BUTTON_SENSOR_ON)
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static struct sensors_sensor *b1;
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static struct sensors_sensor *b2;
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#endif
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PROCESS_BEGIN();
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putstring("Starting UDP server\n");
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#if (CONTIKI_TARGET_SENSINODE && BUTTON_SENSOR_ON)
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putstring("Button X: Toggle LED X\n");
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#endif
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server_conn = udp_new(NULL, UIP_HTONS(0), NULL);
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udp_bind(server_conn, UIP_HTONS(SERVER_PORT));
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#if (CONTIKI_TARGET_SENSINODE && BUTTON_SENSOR_ON)
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b1 = sensors_find(BUTTON_1_SENSOR);
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b2 = sensors_find(BUTTON_2_SENSOR);
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#endif
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while(1) {
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PROCESS_YIELD();
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if(ev == tcpip_event) {
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tcpip_handler();
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#if (CONTIKI_TARGET_SENSINODE && BUTTON_SENSOR_ON)
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} else if(ev == sensors_event && data != NULL) {
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if(data == b1) {
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leds_toggle(LEDS_GREEN);
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} else if(data == b2) {
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leds_toggle(LEDS_RED);
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}
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#endif /* (CONTIKI_TARGET_SENSINODE && BUTTON_SENSOR_ON) */
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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