Contiki 2.5
blink.c
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1 /*
2  * Copyright (c) 2007, Swedish Institute of Computer Science.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the Institute nor the names of its contributors
14  * may be used to endorse or promote products derived from this software
15  * without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * This file is part of the Contiki operating system.
30  *
31  * $Id: blink.c,v 1.1 2008/01/23 20:34:37 adamdunkels Exp $
32  */
33 
34 /**
35  * \file
36  * A quick program that blinks the LEDs
37  * \author
38  * Adam Dunkels <adam@sics.se>
39  */
40 
41 #include "contiki.h"
42 #include "dev/leds.h"
43 /*---------------------------------------------------------------------------*/
44 PROCESS(blink_process, "Blink");
45 AUTOSTART_PROCESSES(&blink_process);
46 /*---------------------------------------------------------------------------*/
47 PROCESS_THREAD(blink_process, ev, data)
48 {
49  PROCESS_EXITHANDLER(goto exit;)
50  PROCESS_BEGIN();
51 
52  while(1) {
53  static struct etimer et;
54  etimer_set(&et, CLOCK_SECOND);
55  PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
56  leds_on(LEDS_ALL);
57  etimer_set(&et, CLOCK_SECOND);
58  PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
59  leds_off(LEDS_ALL);
60  }
61 
62  exit:
63  leds_off(LEDS_ALL);
64  PROCESS_END();
65 }
66 /*---------------------------------------------------------------------------*/
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