baaa2c5741
Now the old GENERIC_RESOURCE macros works again (but usage has changed). Common resources (battery, leds, radio) are now in resources-common.
81 lines
3.2 KiB
C
81 lines
3.2 KiB
C
/*
|
|
* Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
|
|
* 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 resource
|
|
* \author
|
|
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
|
|
*/
|
|
|
|
#include "contiki.h"
|
|
|
|
#if PLATFORM_HAS_BATTERY
|
|
|
|
#include <string.h>
|
|
#include "rest-engine.h"
|
|
#include "dev/battery-sensor.h"
|
|
|
|
static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
|
|
|
|
/* A simple getter example. Returns the reading from light sensor with a simple etag */
|
|
RESOURCE(res_battery,
|
|
"title=\"Battery status\";rt=\"Battery\"",
|
|
res_get_handler,
|
|
NULL,
|
|
NULL,
|
|
NULL);
|
|
|
|
static void
|
|
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
int battery = battery_sensor.value(0);
|
|
|
|
unsigned int accept = -1;
|
|
REST.get_header_accept(request, &accept);
|
|
|
|
if(accept == -1 || accept == REST.type.TEXT_PLAIN) {
|
|
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%d.%02d", battery/1000, battery % 1000);
|
|
|
|
REST.set_response_payload(response, buffer, strlen((char *)buffer));
|
|
} else if(accept == REST.type.APPLICATION_JSON) {
|
|
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'battery':%d.%02d}", battery/1000, battery % 1000);
|
|
|
|
REST.set_response_payload(response, buffer, strlen((char *)buffer));
|
|
} else {
|
|
REST.set_response_status(response, REST.status.NOT_ACCEPTABLE);
|
|
const char *msg = "Supporting content-types text/plain and application/json";
|
|
REST.set_response_payload(response, msg, strlen(msg));
|
|
}
|
|
}
|
|
#endif /* PLATFORM_HAS_BATTERY */
|