osd-contiki/examples/jn516x/rpl/coap-dongle-node/dongle-node.c

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2015-09-21 11:00:32 +02:00
/*
* Copyright (c) 2015 NXP B.V.
* 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 NXP B.V. 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 NXP B.V. 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 NXP B.V. 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.
*
* Author: Theo van Daele <theo.van.daele@nxp.com>
*
*/
#include "contiki.h"
#include "net/ip/uip.h"
#include "tools/rpl-tools.h"
#include "rest-engine.h"
#include "sys/ctimer.h"
#include <stdio.h>
#include "dev/leds.h"
static void ct_callback(void *ptr);
static void put_post_led_toggle_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
static char content[REST_MAX_CHUNK_SIZE];
static int content_len = 0;
static struct ctimer ct;
#define CONTENT_PRINTF(...) { if(content_len < sizeof(content)) { content_len += snprintf(content + content_len, sizeof(content) - content_len, __VA_ARGS__); } }
/* On dongle, LEDs are connected anti-parallel to DIO pins. */
#define TOGGLE_TIME CLOCK_SECOND
/*---------------------------------------------------------------------------*/
PROCESS(start_app, "START_APP");
AUTOSTART_PROCESSES(&start_app);
/*---------------------------------------------------------------------------*/
/* Call back for led toggle timer to toggle leds */
static void
ct_callback(void *ptr)
{
static uint8 toggle_status = 0;
if(toggle_status) {
leds_set(LEDS_RED);
} else {
leds_set(LEDS_GREEN);
} ctimer_restart(&ct);
toggle_status ^= 0x01;
}
/*********** CoAP sensor/ resource ************************************************/
RESOURCE(resource_led_toggle,
"title=\"Led_toggle\"",
NULL,
put_post_led_toggle_handler,
put_post_led_toggle_handler,
NULL);
static void
put_post_led_toggle_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
static int led_state = 0;
const uint8_t *request_content;
int request_content_len;
unsigned int accept = -1;
/* Given the way the LEDs are connected to the DIO ports, the LEDs are controlled via direct DIO access. */
content_len = 0;
switch(led_state) {
case (0):
ctimer_stop(&ct);
leds_set(LEDS_GREEN); /* Only LEDS_GREEN on */
CONTENT_PRINTF("Message from resource: Green LED on");
led_state = 1;
break;
case (1):
leds_set(LEDS_RED); /* Only LEDS_RED on */
CONTENT_PRINTF("Message from resource: Red LED on");
led_state = 2;
break;
case (2):
leds_set(0); /* All LEDS off */
CONTENT_PRINTF("Message from resource: All LEDs off");
led_state = 3;
break;
case 3:
/* Both leds toggle */
CONTENT_PRINTF("Message from resource: LEDs toggle");
ctimer_restart(&ct);
led_state = 0;
default:
break;
}
/* Return message */
REST.get_header_accept(request, &accept);
if(accept == -1 || accept == REST.type.TEXT_PLAIN) {
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_response_payload(response, (uint8_t *)content, content_len);
}
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(start_app, ev, data)
{
PROCESS_BEGIN();
static int is_coordinator = 0;
/* Switch off dongle leds */
/* Initialise ct timer, but don't let it run yet */
ctimer_set(&ct, TOGGLE_TIME, ct_callback, NULL);
ctimer_stop(&ct);
/* Start net stack */
if(is_coordinator) {
uip_ipaddr_t prefix;
uip_ip6addr(&prefix, 0xaaaa, 0, 0, 0, 0, 0, 0, 0);
rpl_tools_init(&prefix);
} else {
rpl_tools_init(NULL);
} printf("Starting RPL node\n");
rest_init_engine();
rest_activate_resource(&resource_led_toggle, "Dongle/LED-toggle");
PROCESS_END();
}