contiki/examples/nrf52dk/coap-demo/resources/res-leds.c
2016-02-15 09:37:38 +01:00

107 lines
3.8 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>
* \author
* Wojciech Bober <wojciech.bober@nordicsemi.no>
*/
#include <string.h>
#include "contiki.h"
#include "rest-engine.h"
#include "dev/leds.h"
#define DEBUG DEBUG_NONE
#include "net/ip/uip-debug.h"
static void
res_post_put_handler(void *request, void *response, uint8_t *buffer,
uint16_t preferred_size, int32_t *offset);
static void
res_get_handler(void *request, void *response, uint8_t *buffer,
uint16_t preferred_size, int32_t *offset);
static void
res_event_handler();
/*A simple actuator example, depending on the color query parameter and post variable mode, corresponding led is activated or deactivated*/
EVENT_RESOURCE(res_led3,
"title=\"LED3\"; obs",
res_get_handler,
res_post_put_handler,
res_post_put_handler,
NULL,
res_event_handler
);
static void
res_post_put_handler(void *request, void *response, uint8_t *buffer,
uint16_t preferred_size, int32_t *offset)
{
const uint8_t *payload;
REST.get_request_payload(request, &payload);
if (*payload == '0' || *payload == '1') {
if (*payload == '1') {
leds_on(LEDS_3);
} else {
leds_off(LEDS_3);
}
REST.notify_subscribers(&res_led3);
REST.set_response_status(response, REST.status.CHANGED);
} else {
REST.set_response_status(response, REST.status.BAD_REQUEST);
}
}
static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_response_payload(response, buffer, snprintf((char *)buffer, preferred_size, "%d", (leds_get() & LEDS_3) ? 1 : 0));
}
/*
* Additionally, res_event_handler must be implemented for each EVENT_RESOURCE.
* It is called through <res_name>.trigger(), usually from the server process.
*/
static void
res_event_handler()
{
/* Notify the registered observers which will trigger the res_get_handler to create the response. */
REST.notify_subscribers(&res_led3);
}