51b73127e9
* Simple HTTP webservice with support for both receiving and sending HTTP requests. * json-ws example that optionally push sensor data to COSM over IPv6.
131 lines
4.3 KiB
C
131 lines
4.3 KiB
C
/*
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* Copyright (c) 2011-2012, Swedish Institute of 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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* Websense for Sky mote
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* \author
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* Niclas Finne <nfi@sics.se>
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* Joakim Eriksson <joakime@sics.se>
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* Joel Hoglund <joel@sics.se>
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*/
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#include "contiki.h"
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#include "dev/leds.h"
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#include "dev/sht11-sensor.h"
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#include "jsontree.h"
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#include "json-ws.h"
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#include <stdio.h>
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#define DEBUG 0
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#if DEBUG
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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PROCESS(websense_process, "Websense (sky)");
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AUTOSTART_PROCESSES(&websense_process);
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/*---------------------------------------------------------------------------*/
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static CC_INLINE int
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get_temp(void)
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{
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return ((sht11_sensor.value(SHT11_SENSOR_TEMP) / 10) - 396) / 10;
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}
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/*---------------------------------------------------------------------------*/
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static int
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output_temp(struct jsontree_context *path)
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{
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char buf[5];
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snprintf(buf, sizeof(buf), "%3d", get_temp());
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jsontree_write_atom(path, buf);
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return 0;
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}
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static struct jsontree_callback temp_sensor_callback =
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JSONTREE_CALLBACK(output_temp, NULL);
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/*---------------------------------------------------------------------------*/
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static struct jsontree_string desc = JSONTREE_STRING("Tmote Sky");
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static struct jsontree_string temp_unit = JSONTREE_STRING("Celcius");
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JSONTREE_OBJECT(node_tree,
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JSONTREE_PAIR("node-type", &desc),
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JSONTREE_PAIR("time", &json_time_callback));
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JSONTREE_OBJECT(temp_sensor_tree,
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JSONTREE_PAIR("unit", &temp_unit),
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JSONTREE_PAIR("value", &temp_sensor_callback));
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JSONTREE_OBJECT(rsc_tree,
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JSONTREE_PAIR("temperature", &temp_sensor_tree),
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JSONTREE_PAIR("leds", &json_leds_callback));
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/* complete node tree */
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JSONTREE_OBJECT(tree,
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JSONTREE_PAIR("node", &node_tree),
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JSONTREE_PAIR("rsc", &rsc_tree),
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JSONTREE_PAIR("cfg", &json_subscribe_callback));
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/*---------------------------------------------------------------------------*/
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/* for cosm plugin */
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#if WITH_COSM
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/* set COSM value callback to be the temp sensor */
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struct jsontree_callback cosm_value_callback =
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JSONTREE_CALLBACK(output_temp, NULL);
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#endif
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PROCESS_THREAD(websense_process, ev, data)
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{
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static struct etimer timer;
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PROCESS_BEGIN();
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json_ws_init(&tree);
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SENSORS_ACTIVATE(sht11_sensor);
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json_ws_set_callback("rsc");
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while(1) {
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/* Alive indication with the LED */
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etimer_set(&timer, CLOCK_SECOND * 5);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&timer));
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leds_on(LEDS_RED);
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etimer_set(&timer, CLOCK_SECOND / 8);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&timer));
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leds_off(LEDS_RED);
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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