Contiki 2.6

blink.c

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00001 /*
00002  * Copyright (c) 2007, Swedish Institute of Computer Science.
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the Institute nor the names of its contributors
00014  *    may be used to endorse or promote products derived from this software
00015  *    without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00027  * SUCH DAMAGE.
00028  *
00029  * This file is part of the Contiki operating system.
00030  *
00031  * $Id: blink.c,v 1.1 2010/08/24 16:26:38 joxe Exp $
00032  */
00033 
00034 /**
00035  * \file
00036  *         A quick program that blinks the LEDs
00037  * \author
00038  *         Adam Dunkels <adam@sics.se>
00039  */
00040 
00041 #include "contiki.h"
00042 #include "dev/leds.h"
00043 /*---------------------------------------------------------------------------*/
00044 PROCESS(blink_process, "Blink");
00045 AUTOSTART_PROCESSES(&blink_process);
00046 /*---------------------------------------------------------------------------*/
00047 PROCESS_THREAD(blink_process, ev, data)
00048 {
00049   PROCESS_EXITHANDLER(goto exit;)
00050   PROCESS_BEGIN();
00051 
00052   while(1) {
00053     static struct etimer et;
00054     etimer_set(&et, CLOCK_SECOND);
00055     PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
00056     leds_on(LEDS_ALL);
00057     etimer_set(&et, CLOCK_SECOND);
00058     PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
00059     leds_off(LEDS_ALL);
00060   }
00061 
00062  exit:
00063   leds_off(LEDS_ALL);
00064   PROCESS_END();
00065 }
00066 /*---------------------------------------------------------------------------*/